Commit Graph

405 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
c6ac900e26 Merge 5.10.185 into android12-5.10-lts
Changes in 5.10.185
	lib: cleanup kstrto*() usage
	kernel.h: split out kstrtox() and simple_strtox() to a separate header
	test_firmware: Use kstrtobool() instead of strtobool()
	test_firmware: prevent race conditions by a correct implementation of locking
	test_firmware: fix a memory leak with reqs buffer
	power: supply: ab8500: Fix external_power_changed race
	power: supply: sc27xx: Fix external_power_changed race
	power: supply: bq27xxx: Use mod_delayed_work() instead of cancel() + schedule()
	ARM: dts: vexpress: add missing cache properties
	tools: gpio: fix debounce_period_us output of lsgpio
	power: supply: Ratelimit no data debug output
	platform/x86: asus-wmi: Ignore WMI events with codes 0x7B, 0xC0
	regulator: Fix error checking for debugfs_create_dir
	irqchip/gic-v3: Disable pseudo NMIs on Mediatek devices w/ firmware issues
	power: supply: Fix logic checking if system is running from battery
	btrfs: scrub: try harder to mark RAID56 block groups read-only
	btrfs: handle memory allocation failure in btrfs_csum_one_bio
	ASoC: soc-pcm: test if a BE can be prepared
	parisc: Improve cache flushing for PCXL in arch_sync_dma_for_cpu()
	parisc: Flush gatt writes and adjust gatt mask in parisc_agp_mask_memory()
	MIPS: Alchemy: fix dbdma2
	mips: Move initrd_start check after initrd address sanitisation.
	ASoC: dwc: move DMA init to snd_soc_dai_driver probe()
	xen/blkfront: Only check REQ_FUA for writes
	drm:amd:amdgpu: Fix missing buffer object unlock in failure path
	irqchip/gic: Correctly validate OF quirk descriptors
	io_uring: hold uring mutex around poll removal
	epoll: ep_autoremove_wake_function should use list_del_init_careful
	ocfs2: fix use-after-free when unmounting read-only filesystem
	ocfs2: check new file size on fallocate call
	nios2: dts: Fix tse_mac "max-frame-size" property
	nilfs2: fix incomplete buffer cleanup in nilfs_btnode_abort_change_key()
	nilfs2: fix possible out-of-bounds segment allocation in resize ioctl
	kexec: support purgatories with .text.hot sections
	x86/purgatory: remove PGO flags
	powerpc/purgatory: remove PGO flags
	nouveau: fix client work fence deletion race
	RDMA/uverbs: Restrict usage of privileged QKEYs
	net: usb: qmi_wwan: add support for Compal RXM-G1
	ALSA: hda/realtek: Add a quirk for Compaq N14JP6
	Remove DECnet support from kernel
	USB: serial: option: add Quectel EM061KGL series
	serial: lantiq: add missing interrupt ack
	usb: dwc3: gadget: Reset num TRBs before giving back the request
	RDMA/rtrs: Fix the last iu->buf leak in err path
	spi: fsl-dspi: avoid SCK glitches with continuous transfers
	netfilter: nfnetlink: skip error delivery on batch in case of ENOMEM
	net: enetc: correct the indexes of highest and 2nd highest TCs
	ping6: Fix send to link-local addresses with VRF.
	net/sched: cls_u32: Fix reference counter leak leading to overflow
	RDMA/rxe: Remove the unused variable obj
	RDMA/rxe: Removed unused name from rxe_task struct
	RDMA/rxe: Fix the use-before-initialization error of resp_pkts
	iavf: remove mask from iavf_irq_enable_queues()
	octeontx2-af: fixed resource availability check
	RDMA/mlx5: Initiate dropless RQ for RAW Ethernet functions
	RDMA/cma: Always set static rate to 0 for RoCE
	IB/uverbs: Fix to consider event queue closing also upon non-blocking mode
	IB/isert: Fix dead lock in ib_isert
	IB/isert: Fix possible list corruption in CMA handler
	IB/isert: Fix incorrect release of isert connection
	ipvlan: fix bound dev checking for IPv6 l3s mode
	sctp: fix an error code in sctp_sf_eat_auth()
	igb: fix nvm.ops.read() error handling
	drm/nouveau: don't detect DSM for non-NVIDIA device
	drm/nouveau/dp: check for NULL nv_connector->native_mode
	drm/nouveau: add nv_encoder pointer check for NULL
	ext4: drop the call to ext4_error() from ext4_get_group_info()
	net/sched: cls_api: Fix lockup on flushing explicitly created chain
	net: lapbether: only support ethernet devices
	net: tipc: resize nlattr array to correct size
	selftests/ptp: Fix timestamp printf format for PTP_SYS_OFFSET
	afs: Fix vlserver probe RTT handling
	cgroup: always put cset in cgroup_css_set_put_fork
	rcu/kvfree: Avoid freeing new kfree_rcu() memory after old grace period
	neighbour: Remove unused inline function neigh_key_eq16()
	net: Remove unused inline function dst_hold_and_use()
	net: Remove DECnet leftovers from flow.h.
	neighbour: delete neigh_lookup_nodev as not used
	batman-adv: Switch to kstrtox.h for kstrtou64
	mmc: block: ensure error propagation for non-blk
	mm/memory_hotplug: extend offline_and_remove_memory() to handle more than one memory block
	nilfs2: reject devices with insufficient block count
	media: dvbdev: Fix memleak in dvb_register_device
	media: dvbdev: fix error logic at dvb_register_device()
	media: dvb-core: Fix use-after-free due to race at dvb_register_device()
	drm/i915/dg1: Wait for pcode/uncore handshake at startup
	drm/i915/gen11+: Only load DRAM information from pcode
	um: Fix build w/o CONFIG_PM_SLEEP
	Linux 5.10.185

Change-Id: I05ba9c2e38c013c553c9f89e2a6b71ec9bdb0bd3
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-06-28 10:31:14 +00:00
Andy Shevchenko
6e2e551e39 kernel.h: split out kstrtox() and simple_strtox() to a separate header
[ Upstream commit 4c52729377eab025b238caeed48994a39c3b73f2 ]

kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out kstrtox() and
simple_strtox() helpers.

At the same time convert users in header and lib folders to use new
header.  Though for time being include new header back to kernel.h to
avoid twisted indirected includes for existing users.

[andy.shevchenko@gmail.com: fix documentation references]
  Link: https://lkml.kernel.org/r/20210615220003.377901-1-andy.shevchenko@gmail.com

Link: https://lkml.kernel.org/r/20210611185815.44103-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Francis Laniel <laniel_francis@privacyrequired.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Kars Mulder <kerneldev@karsmulder.nl>
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stable-dep-of: 4acfe3dfde68 ("test_firmware: prevent race conditions by a correct implementation of locking")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-06-21 15:45:35 +02:00
Greg Kroah-Hartman
0847230e9b Merge 5.10.173 into android12-5.10-lts
Changes in 5.10.173
	HID: asus: Remove check for same LED brightness on set
	HID: asus: use spinlock to protect concurrent accesses
	HID: asus: use spinlock to safely schedule workers
	powerpc/mm: Rearrange if-else block to avoid clang warning
	ARM: OMAP2+: Fix memory leak in realtime_counter_init()
	arm64: dts: qcom: qcs404: use symbol names for PCIe resets
	ARM: zynq: Fix refcount leak in zynq_early_slcr_init
	arm64: dts: mediatek: mt8183: Fix systimer 13 MHz clock description
	arm64: dts: qcom: sdm845-db845c: fix audio codec interrupt pin name
	arm64: dts: qcom: sc7180: correct SPMI bus address cells
	arm64: dts: meson-gx: Fix Ethernet MAC address unit name
	arm64: dts: meson-g12a: Fix internal Ethernet PHY unit name
	arm64: dts: meson-gx: Fix the SCPI DVFS node name and unit address
	arm64: dts: qcom: ipq8074: correct USB3 QMP PHY-s clock output names
	arm64: dts: qcom: Fix IPQ8074 PCIe PHY nodes
	arm64: dts: qcom: ipq8074: fix PCIe PHY serdes size
	arm64: dts: qcom: ipq8074: fix Gen3 PCIe QMP PHY
	arm64: dts: qcom: ipq8074: correct Gen2 PCIe ranges
	arm64: dts: qcom: ipq8074: fix Gen3 PCIe node
	arm64: dts: qcom: ipq8074: correct PCIe QMP PHY output clock names
	arm64: dts: meson: remove CPU opps below 1GHz for G12A boards
	ARM: OMAP1: call platform_device_put() in error case in omap1_dm_timer_init()
	ARM: s3c: fix s3c64xx_set_timer_source prototype
	arm64: dts: ti: k3-j7200: Fix wakeup pinmux range
	ARM: dts: exynos: correct wr-active property in Exynos3250 Rinato
	ARM: imx: Call ida_simple_remove() for ida_simple_get
	arm64: dts: amlogic: meson-gx: fix SCPI clock dvfs node name
	arm64: dts: amlogic: meson-axg: fix SCPI clock dvfs node name
	arm64: dts: amlogic: meson-gx: add missing SCPI sensors compatible
	arm64: dts: amlogic: meson-gxl-s905d-sml5442tw: drop invalid clock-names property
	arm64: dts: amlogic: meson-gx: add missing unit address to rng node name
	arm64: dts: amlogic: meson-gxl: add missing unit address to eth-phy-mux node name
	arm64: dts: amlogic: meson-gx-libretech-pc: fix update button name
	arm64: dts: amlogic: meson-gxl-s905d-phicomm-n1: fix led node name
	arm64: dts: amlogic: meson-gxbb-kii-pro: fix led node name
	arm64: dts: renesas: beacon-renesom: Fix gpio expander reference
	ARM: dts: sun8i: nanopi-duo2: Fix regulator GPIO reference
	ARM: dts: imx7s: correct iomuxc gpr mux controller cells
	arm64: dts: mediatek: mt7622: Add missing pwm-cells to pwm node
	blk-mq: avoid sleep in blk_mq_alloc_request_hctx
	blk-mq: remove stale comment for blk_mq_sched_mark_restart_hctx
	blk-mq: correct stale comment of .get_budget
	s390/dasd: Prepare for additional path event handling
	s390/dasd: Fix potential memleak in dasd_eckd_init()
	sched/deadline,rt: Remove unused parameter from pick_next_[rt|dl]_entity()
	sched/rt: pick_next_rt_entity(): check list_entry
	x86/perf/zhaoxin: Add stepping check for ZXC
	block: bio-integrity: Copy flags when bio_integrity_payload is cloned
	wifi: rsi: Fix memory leak in rsi_coex_attach()
	wifi: rtlwifi: rtl8821ae: don't call kfree_skb() under spin_lock_irqsave()
	wifi: rtlwifi: rtl8188ee: don't call kfree_skb() under spin_lock_irqsave()
	wifi: rtlwifi: rtl8723be: don't call kfree_skb() under spin_lock_irqsave()
	wifi: iwlegacy: common: don't call dev_kfree_skb() under spin_lock_irqsave()
	wifi: libertas: fix memory leak in lbs_init_adapter()
	wifi: rtl8xxxu: don't call dev_kfree_skb() under spin_lock_irqsave()
	rtlwifi: fix -Wpointer-sign warning
	wifi: rtlwifi: Fix global-out-of-bounds bug in _rtl8812ae_phy_set_txpower_limit()
	libbpf: Fix btf__align_of() by taking into account field offsets
	wifi: ipw2x00: don't call dev_kfree_skb() under spin_lock_irqsave()
	wifi: ipw2200: fix memory leak in ipw_wdev_init()
	wifi: wilc1000: fix potential memory leak in wilc_mac_xmit()
	wifi: brcmfmac: fix potential memory leak in brcmf_netdev_start_xmit()
	wifi: brcmfmac: unmap dma buffer in brcmf_msgbuf_alloc_pktid()
	wifi: libertas_tf: don't call kfree_skb() under spin_lock_irqsave()
	wifi: libertas: if_usb: don't call kfree_skb() under spin_lock_irqsave()
	wifi: libertas: main: don't call kfree_skb() under spin_lock_irqsave()
	wifi: libertas: cmdresp: don't call kfree_skb() under spin_lock_irqsave()
	wifi: wl3501_cs: don't call kfree_skb() under spin_lock_irqsave()
	crypto: x86/ghash - fix unaligned access in ghash_setkey()
	ACPICA: Drop port I/O validation for some regions
	genirq: Fix the return type of kstat_cpu_irqs_sum()
	rcu-tasks: Improve comments explaining tasks_rcu_exit_srcu purpose
	rcu-tasks: Remove preemption disablement around srcu_read_[un]lock() calls
	rcu-tasks: Fix synchronize_rcu_tasks() VS zap_pid_ns_processes()
	lib/mpi: Fix buffer overrun when SG is too long
	crypto: ccp: Use the stack for small SEV command buffers
	crypto: ccp: Use the stack and common buffer for status commands
	crypto: ccp - Use kzalloc for sev ioctl interfaces to prevent kernel memory leak
	crypto: ccp - Avoid page allocation failure warning for SEV_GET_ID2
	ACPICA: nsrepair: handle cases without a return value correctly
	thermal/drivers/tsens: Drop msm8976-specific defines
	thermal/drivers/qcom/tsens_v1: Enable sensor 3 on MSM8976
	thermal/drivers/tsens: Add compat string for the qcom,msm8960
	thermal/drivers/tsens: Sort out msm8976 vs msm8956 data
	wifi: rtl8xxxu: Fix memory leaks with RTL8723BU, RTL8192EU
	wifi: orinoco: check return value of hermes_write_wordrec()
	wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function
	ath9k: hif_usb: simplify if-if to if-else
	ath9k: htc: clean up statistics macros
	wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails
	wifi: ath9k: Fix potential stack-out-of-bounds write in ath9k_wmi_rsp_callback()
	wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup
	wifi: cfg80211: Fix extended KCK key length check in nl80211_set_rekey_data()
	ACPI: battery: Fix missing NUL-termination with large strings
	crypto: ccp - Failure on re-initialization due to duplicate sysfs filename
	crypto: essiv - Handle EBUSY correctly
	crypto: seqiv - Handle EBUSY correctly
	powercap: fix possible name leak in powercap_register_zone()
	x86/cpu: Init AP exception handling from cpu_init_secondary()
	x86/microcode: Replace deprecated CPU-hotplug functions.
	x86: Mark stop_this_cpu() __noreturn
	x86/microcode: Rip out the OLD_INTERFACE
	x86/microcode: Default-disable late loading
	x86/microcode: Print previous version of microcode after reload
	x86/microcode: Add a parameter to microcode_check() to store CPU capabilities
	x86/microcode: Check CPU capabilities after late microcode update correctly
	x86/microcode: Adjust late loading result reporting message
	net: ethernet: ti: am65-cpsw: fix tx csum offload for multi mac mode
	net: ethernet: ti: am65-cpsw: handle deferred probe with dev_err_probe()
	net: ethernet: ti: add missing of_node_put before return
	crypto: xts - Handle EBUSY correctly
	leds: led-class: Add missing put_device() to led_put()
	crypto: ccp - Refactor out sev_fw_alloc()
	crypto: ccp - Flush the SEV-ES TMR memory before giving it to firmware
	bpftool: profile online CPUs instead of possible
	net/mlx5: Enhance debug print in page allocation failure
	irqchip: Fix refcount leak in platform_irqchip_probe
	irqchip/alpine-msi: Fix refcount leak in alpine_msix_init_domains
	irqchip/irq-mvebu-gicp: Fix refcount leak in mvebu_gicp_probe
	irqchip/ti-sci: Fix refcount leak in ti_sci_intr_irq_domain_probe
	s390/vmem: fix empty page tables cleanup under KASAN
	net: add sock_init_data_uid()
	tun: tun_chr_open(): correctly initialize socket uid
	tap: tap_open(): correctly initialize socket uid
	OPP: fix error checking in opp_migrate_dentry()
	Bluetooth: L2CAP: Fix potential user-after-free
	libbpf: Fix alen calculation in libbpf_nla_dump_errormsg()
	rds: rds_rm_zerocopy_callback() correct order for list_add_tail()
	crypto: rsa-pkcs1pad - Use akcipher_request_complete
	m68k: /proc/hardware should depend on PROC_FS
	RISC-V: time: initialize hrtimer based broadcast clock event device
	wifi: iwl3945: Add missing check for create_singlethread_workqueue
	wifi: iwl4965: Add missing check for create_singlethread_workqueue()
	wifi: mwifiex: fix loop iterator in mwifiex_update_ampdu_txwinsize()
	selftests/bpf: Fix out-of-srctree build
	crypto: crypto4xx - Call dma_unmap_page when done
	wifi: mac80211: make rate u32 in sta_set_rate_info_rx()
	thermal/drivers/hisi: Drop second sensor hi3660
	can: esd_usb: Move mislocated storage of SJA1000_ECC_SEG bits in case of a bus error
	bpf: Fix global subprog context argument resolution logic
	irqchip/irq-brcmstb-l2: Set IRQ_LEVEL for level triggered interrupts
	irqchip/irq-bcm7120-l2: Set IRQ_LEVEL for level triggered interrupts
	selftests/net: Interpret UDP_GRO cmsg data as an int value
	l2tp: Avoid possible recursive deadlock in l2tp_tunnel_register()
	net: bcmgenet: fix MoCA LED control
	selftest: fib_tests: Always cleanup before exit
	sefltests: netdevsim: wait for devlink instance after netns removal
	drm: Fix potential null-ptr-deref due to drmm_mode_config_init()
	drm/fourcc: Add missing big-endian XRGB1555 and RGB565 formats
	drm: mxsfb: DRM_MXSFB should depend on ARCH_MXS || ARCH_MXC
	drm/bridge: megachips: Fix error handling in i2c_register_driver()
	drm/vkms: Fix null-ptr-deref in vkms_release()
	drm/vc4: dpi: Add option for inverting pixel clock and output enable
	drm/vc4: dpi: Fix format mapping for RGB565
	drm: tidss: Fix pixel format definition
	gpu: ipu-v3: common: Add of_node_put() for reference returned by of_graph_get_port_by_id()
	drm/msm/hdmi: Add missing check for alloc_ordered_workqueue
	pinctrl: qcom: pinctrl-msm8976: Correct function names for wcss pins
	pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain
	pinctrl: rockchip: add support for rk3568
	pinctrl: rockchip: do coding style for mux route struct
	pinctrl: rockchip: Fix refcount leak in rockchip_pinctrl_parse_groups
	drm/vc4: hvs: Set AXI panic modes
	drm/vc4: hvs: Fix colour order for xRGB1555 on HVS5
	drm/vc4: hdmi: Correct interlaced timings again
	ASoC: fsl_sai: initialize is_dsp_mode flag
	drm/msm/adreno: Fix null ptr access in adreno_gpu_cleanup()
	ALSA: hda/ca0132: minor fix for allocation size
	drm/msm/dpu: Disallow unallocated resources to be returned
	drm/bridge: lt9611: fix sleep mode setup
	drm/bridge: lt9611: fix HPD reenablement
	drm/bridge: lt9611: fix polarity programming
	drm/bridge: lt9611: fix programming of video modes
	drm/bridge: lt9611: fix clock calculation
	drm/bridge: lt9611: pass a pointer to the of node
	drm/mipi-dsi: Fix byte order of 16-bit DCS set/get brightness
	drm/msm: use strscpy instead of strncpy
	drm/msm/dpu: Add check for cstate
	drm/msm/dpu: Add check for pstates
	drm/msm/mdp5: Add check for kzalloc
	pinctrl: bcm2835: Remove of_node_put() in bcm2835_of_gpio_ranges_fallback()
	pinctrl: mediatek: Initialize variable pullen and pullup to zero
	pinctrl: mediatek: Initialize variable *buf to zero
	gpu: host1x: Don't skip assigning syncpoints to channels
	drm/mediatek: dsi: Reduce the time of dsi from LP11 to sending cmd
	drm/mediatek: Use NULL instead of 0 for NULL pointer
	drm/mediatek: Drop unbalanced obj unref
	drm/mediatek: mtk_drm_crtc: Add checks for devm_kcalloc
	drm/mediatek: Clean dangling pointer on bind error path
	ASoC: soc-compress.c: fixup private_data on snd_soc_new_compress()
	gpio: vf610: connect GPIO label to dev name
	spi: dw_bt1: fix MUX_MMIO dependencies
	ASoC: mchp-spdifrx: fix controls which rely on rsr register
	ASoC: atmel: fix spelling mistakes
	ASoC: mchp-spdifrx: fix return value in case completion times out
	ASoC: mchp-spdifrx: fix controls that works with completion mechanism
	ASoC: mchp-spdifrx: disable all interrupts in mchp_spdifrx_dai_remove()
	ASoC: mchp-spdifrx: Fix uninitialized use of mr in mchp_spdifrx_hw_params()
	ASoC: dt-bindings: meson: fix gx-card codec node regex
	hwmon: (ltc2945) Handle error case in ltc2945_value_store
	drm/amdgpu: fix enum odm_combine_mode mismatch
	scsi: mpt3sas: Fix a memory leak
	scsi: aic94xx: Add missing check for dma_map_single()
	spi: bcm63xx-hsspi: fix pm_runtime
	spi: bcm63xx-hsspi: Fix multi-bit mode setting
	hwmon: (mlxreg-fan) Return zero speed for broken fan
	ASoC: tlv320adcx140: fix 'ti,gpio-config' DT property init
	dm: remove flush_scheduled_work() during local_exit()
	NFS: Fix up handling of outstanding layoutcommit in nfs_update_inode()
	NFSv4: keep state manager thread active if swap is enabled
	nfs4trace: fix state manager flag printing
	NFS: fix disabling of swap
	spi: synquacer: Fix timeout handling in synquacer_spi_transfer_one()
	ASoC: soc-dapm.h: fixup warning struct snd_pcm_substream not declared
	HID: bigben: use spinlock to protect concurrent accesses
	HID: bigben_worker() remove unneeded check on report_field
	HID: bigben: use spinlock to safely schedule workers
	hid: bigben_probe(): validate report count
	nfsd: fix race to check ls_layouts
	cifs: Fix lost destroy smbd connection when MR allocate failed
	cifs: Fix warning and UAF when destroy the MR list
	gfs2: jdata writepage fix
	perf llvm: Fix inadvertent file creation
	leds: led-core: Fix refcount leak in of_led_get()
	perf tools: Fix auto-complete on aarch64
	sparc: allow PM configs for sparc32 COMPILE_TEST
	selftests/ftrace: Fix bash specific "==" operator
	printf: fix errname.c list
	objtool: add UACCESS exceptions for __tsan_volatile_read/write
	mfd: pcf50633-adc: Fix potential memleak in pcf50633_adc_async_read()
	clk: qcom: gcc-qcs404: disable gpll[04]_out_aux parents
	clk: qcom: gcc-qcs404: fix names of the DSI clocks used as parents
	RISC-V: fix funct4 definition for c.jalr in parse_asm.h
	mtd: rawnand: sunxi: Fix the size of the last OOB region
	Input: iqs269a - drop unused device node references
	Input: iqs269a - increase interrupt handler return delay
	Input: iqs269a - configure device with a single block write
	linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h>
	clk: renesas: cpg-mssr: Fix use after free if cpg_mssr_common_init() failed
	clk: renesas: cpg-mssr: Remove superfluous check in resume code
	clk: imx: avoid memory leak
	Input: ads7846 - don't report pressure for ads7845
	Input: ads7846 - convert to full duplex
	Input: ads7846 - convert to one message
	Input: ads7846 - always set last command to PWRDOWN
	Input: ads7846 - don't check penirq immediately for 7845
	clk: qcom: gpucc-sc7180: fix clk_dis_wait being programmed for CX GDSC
	clk: qcom: gpucc-sdm845: fix clk_dis_wait being programmed for CX GDSC
	powerpc/powernv/ioda: Skip unallocated resources when mapping to PE
	clk: Honor CLK_OPS_PARENT_ENABLE in clk_core_is_enabled()
	powerpc/perf/hv-24x7: add missing RTAS retry status handling
	powerpc/pseries/lpar: add missing RTAS retry status handling
	powerpc/pseries/lparcfg: add missing RTAS retry status handling
	powerpc/rtas: make all exports GPL
	powerpc/rtas: ensure 4KB alignment for rtas_data_buf
	powerpc/eeh: Small refactor of eeh_handle_normal_event()
	powerpc/eeh: Set channel state after notifying the drivers
	MIPS: SMP-CPS: fix build error when HOTPLUG_CPU not set
	MIPS: vpe-mt: drop physical_memsize
	vdpa/mlx5: Don't clear mr struct on destroy MR
	alpha/boot/tools/objstrip: fix the check for ELF header
	Input: iqs269a - do not poll during suspend or resume
	Input: iqs269a - do not poll during ATI
	remoteproc: qcom_q6v5_mss: Use a carveout to authenticate modem headers
	media: ti: cal: fix possible memory leak in cal_ctx_create()
	media: platform: ti: Add missing check for devm_regulator_get
	powerpc: Remove linker flag from KBUILD_AFLAGS
	builddeb: clean generated package content
	media: max9286: Fix memleak in max9286_v4l2_register()
	media: ov2740: Fix memleak in ov2740_init_controls()
	media: ov5675: Fix memleak in ov5675_init_controls()
	media: i2c: ov772x: Fix memleak in ov772x_probe()
	media: i2c: imx219: remove redundant writes
	media: i2c: imx219: Split common registers from mode tables
	media: i2c: imx219: Fix binning for RAW8 capture
	media: rc: Fix use-after-free bugs caused by ene_tx_irqsim()
	media: i2c: ov7670: 0 instead of -EINVAL was returned
	media: usb: siano: Fix use after free bugs caused by do_submit_urb
	media: saa7134: Use video_unregister_device for radio_dev
	rpmsg: glink: Avoid infinite loop on intent for missing channel
	udf: Define EFSCORRUPTED error code
	ARM: dts: exynos: Use Exynos5420 compatible for the MIPI video phy
	blk-iocost: fix divide by 0 error in calc_lcoefs()
	wifi: ath9k: Fix use-after-free in ath9k_hif_usb_disconnect()
	wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds()
	rcu: Make RCU_LOCKDEP_WARN() avoid early lockdep checks
	rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait()
	rcu-tasks: Make rude RCU-Tasks work well with CPU hotplug
	wifi: ath11k: debugfs: fix to work with multiple PCI devices
	thermal: intel: Fix unsigned comparison with less than zero
	timers: Prevent union confusion from unexpected restart_syscall()
	x86/bugs: Reset speculation control settings on init
	wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds
	wifi: mt7601u: fix an integer underflow
	inet: fix fast path in __inet_hash_connect()
	ice: add missing checks for PF vsi type
	ACPI: Don't build ACPICA with '-Os'
	clocksource: Suspend the watchdog temporarily when high read latency detected
	crypto: hisilicon: Wipe entire pool on error
	net: bcmgenet: Add a check for oversized packets
	m68k: Check syscall_trace_enter() return code
	wifi: mt76: dma: free rx_head in mt76_dma_rx_cleanup
	ACPI: video: Fix Lenovo Ideapad Z570 DMI match
	net/mlx5: fw_tracer: Fix debug print
	coda: Avoid partial allocation of sig_inputArgs
	uaccess: Add minimum bounds check on kernel buffer size
	PM: EM: fix memory leak with using debugfs_lookup()
	Bluetooth: btusb: Add VID:PID 13d3:3529 for Realtek RTL8821CE
	drm/amd/display: Fix potential null-deref in dm_resume
	drm/omap: dsi: Fix excessive stack usage
	HID: Add Mapping for System Microphone Mute
	drm/tiny: ili9486: Do not assume 8-bit only SPI controllers
	drm/radeon: free iio for atombios when driver shutdown
	drm: amd: display: Fix memory leakage
	drm/msm/dsi: Add missing check for alloc_ordered_workqueue
	docs/scripts/gdb: add necessary make scripts_gdb step
	ASoC: kirkwood: Iterate over array indexes instead of using pointer math
	regulator: max77802: Bounds check regulator id against opmode
	regulator: s5m8767: Bounds check id indexing into arrays
	gfs2: Improve gfs2_make_fs_rw error handling
	hwmon: (coretemp) Simplify platform device handling
	pinctrl: at91: use devm_kasprintf() to avoid potential leaks
	HID: logitech-hidpp: Don't restart communication if not necessary
	drm: panel-orientation-quirks: Add quirk for Lenovo IdeaPad Duet 3 10IGL5
	dm thin: add cond_resched() to various workqueue loops
	dm cache: add cond_resched() to various workqueue loops
	nfsd: zero out pointers after putting nfsd_files on COPY setup error
	wifi: rtl8xxxu: fixing transmisison failure for rtl8192eu
	firmware: coreboot: framebuffer: Ignore reserved pixel color bits
	rtc: pm8xxx: fix set-alarm race
	ipmi_ssif: Rename idle state and check
	s390/extmem: return correct segment type in __segment_load()
	s390: discard .interp section
	s390/kprobes: fix irq mask clobbering on kprobe reenter from post_handler
	s390/kprobes: fix current_kprobe never cleared after kprobes reenter
	cifs: Fix uninitialized memory read in smb3_qfs_tcon()
	ARM: dts: exynos: correct HDMI phy compatible in Exynos4
	hfs: fix missing hfs_bnode_get() in __hfs_bnode_create
	fs: hfsplus: fix UAF issue in hfsplus_put_super
	exfat: fix reporting fs error when reading dir beyond EOF
	exfat: fix unexpected EOF while reading dir
	exfat: redefine DIR_DELETED as the bad cluster number
	exfat: fix inode->i_blocks for non-512 byte sector size device
	f2fs: fix information leak in f2fs_move_inline_dirents()
	f2fs: fix cgroup writeback accounting with fs-layer encryption
	ocfs2: fix defrag path triggering jbd2 ASSERT
	ocfs2: fix non-auto defrag path not working issue
	udf: Truncate added extents on failed expansion
	udf: Do not bother merging very long extents
	udf: Do not update file length for failed writes to inline files
	udf: Preserve link count of system files
	udf: Detect system inodes linked into directory hierarchy
	udf: Fix file corruption when appending just after end of preallocated extent
	KVM: Destroy target device if coalesced MMIO unregistration fails
	KVM: x86: Inject #GP if WRMSR sets reserved bits in APIC Self-IPI
	KVM: s390: disable migration mode when dirty tracking is disabled
	x86/virt: Force GIF=1 prior to disabling SVM (for reboot flows)
	x86/crash: Disable virt in core NMI crash handler to avoid double shootdown
	x86/reboot: Disable virtualization in an emergency if SVM is supported
	x86/reboot: Disable SVM, not just VMX, when stopping CPUs
	x86/kprobes: Fix __recover_optprobed_insn check optimizing logic
	x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range
	x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter
	x86/microcode/AMD: Add a @cpu parameter to the reloading functions
	x86/microcode/AMD: Fix mixed steppings support
	x86/speculation: Allow enabling STIBP with legacy IBRS
	Documentation/hw-vuln: Document the interaction between IBRS and STIBP
	brd: return 0/-error from brd_insert_page()
	ima: Align ima_file_mmap() parameters with mmap_file LSM hook
	irqdomain: Fix association race
	irqdomain: Fix disassociation race
	irqdomain: Drop bogus fwspec-mapping error handling
	io_uring: handle TIF_NOTIFY_RESUME when checking for task_work
	io_uring: mark task TASK_RUNNING before handling resume/task work
	io_uring: add a conditional reschedule to the IOPOLL cancelation loop
	io_uring/rsrc: disallow multi-source reg buffers
	io_uring: remove MSG_NOSIGNAL from recvmsg
	io_uring/poll: allow some retries for poll triggering spuriously
	ALSA: ice1712: Do not left ice->gpio_mutex locked in aureon_add_controls()
	ALSA: hda/realtek: Add quirk for HP EliteDesk 800 G6 Tower PC
	jbd2: fix data missing when reusing bh which is ready to be checkpointed
	ext4: optimize ea_inode block expansion
	ext4: refuse to create ea block when umounted
	mtd: spi-nor: Fix shift-out-of-bounds in spi_nor_set_erase_type
	dm: add cond_resched() to dm_wq_work()
	wifi: rtl8xxxu: Use a longer retry limit of 48
	wifi: cfg80211: Fix use after free for wext
	thermal: intel: powerclamp: Fix cur_state for multi package system
	dm flakey: fix logic when corrupting a bio
	dm flakey: don't corrupt the zero page
	ARM: dts: exynos: correct TMU phandle in Exynos4210
	ARM: dts: exynos: correct TMU phandle in Exynos4
	ARM: dts: exynos: correct TMU phandle in Odroid XU3 family
	ARM: dts: exynos: correct TMU phandle in Exynos5250
	ARM: dts: exynos: correct TMU phandle in Odroid XU
	ARM: dts: exynos: correct TMU phandle in Odroid HC1
	rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails
	alpha: fix FEN fault handling
	dax/kmem: Fix leak of memory-hotplug resources
	mips: fix syscall_get_nr
	media: ipu3-cio2: Fix PM runtime usage_count in driver unbind
	remoteproc/mtk_scp: Move clk ops outside send_lock
	docs: gdbmacros: print newest record
	mm: memcontrol: deprecate charge moving
	mm/thp: check and bail out if page in deferred queue already
	ktest.pl: Give back console on Ctrt^C on monitor
	ktest.pl: Fix missing "end_monitor" when machine check fails
	ktest.pl: Add RUN_TIMEOUT option with default unlimited
	ring-buffer: Handle race between rb_move_tail and rb_check_pages
	scsi: qla2xxx: Fix link failure in NPIV environment
	scsi: qla2xxx: Fix DMA-API call trace on NVMe LS requests
	scsi: qla2xxx: Fix erroneous link down
	scsi: ses: Don't attach if enclosure has no components
	scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
	scsi: ses: Fix possible addl_desc_ptr out-of-bounds accesses
	scsi: ses: Fix possible desc_ptr out-of-bounds accesses
	scsi: ses: Fix slab-out-of-bounds in ses_intf_remove()
	riscv: jump_label: Fixup unaligned arch_static_branch function
	PCI/PM: Observe reset delay irrespective of bridge_d3
	PCI: hotplug: Allow marking devices as disconnected during bind/unbind
	PCI: Avoid FLR for AMD FCH AHCI adapters
	vfio/type1: prevent underflow of locked_vm via exec()
	drm/i915/quirks: Add inverted backlight quirk for HP 14-r206nv
	drm/radeon: Fix eDP for single-display iMac11,2
	drm/edid: fix AVI infoframe aspect ratio handling
	arm64: dts: qcom: ipq8074: fix Gen2 PCIe QMP PHY
	wifi: ath9k: use proper statements in conditionals
	pinctrl: rockchip: fix mux route data for rk3568
	pinctrl: rockchip: fix reading pull type on rk3568
	kbuild: Port silent mode detection to future gnu make.
	net/sched: Retire tcindex classifier
	fs/jfs: fix shift exponent db_agl2size negative
	objtool: Fix memory leak in create_static_call_sections()
	pwm: sifive: Reduce time the controller lock is held
	pwm: sifive: Always let the first pwm_apply_state succeed
	pwm: stm32-lp: fix the check on arr and cmp registers update
	f2fs: use memcpy_{to,from}_page() where possible
	fs: f2fs: initialize fsdata in pagecache_write()
	um: vector: Fix memory leak in vector_config
	ubi: ensure that VID header offset + VID header size <= alloc, size
	ubifs: Fix build errors as symbol undefined
	ubifs: Rectify space budget for ubifs_symlink() if symlink is encrypted
	ubifs: Rectify space budget for ubifs_xrename()
	ubifs: Fix wrong dirty space budget for dirty inode
	ubifs: do_rename: Fix wrong space budget when target inode's nlink > 1
	ubifs: Reserve one leb for each journal head while doing budget
	ubi: Fix use-after-free when volume resizing failed
	ubi: Fix unreferenced object reported by kmemleak in ubi_resize_volume()
	ubifs: Fix memory leak in alloc_wbufs()
	ubi: Fix possible null-ptr-deref in ubi_free_volume()
	ubifs: Re-statistic cleaned znode count if commit failed
	ubifs: dirty_cow_znode: Fix memleak in error handling path
	ubifs: ubifs_writepage: Mark page dirty after writing inode failed
	ubi: fastmap: Fix missed fm_anchor PEB in wear-leveling after disabling fastmap
	ubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show()
	ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed
	x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list
	watchdog: at91sam9_wdt: use devm_request_irq to avoid missing free_irq() in error path
	watchdog: Fix kmemleak in watchdog_cdev_register
	watchdog: pcwd_usb: Fix attempting to access uninitialized memory
	netfilter: ctnetlink: fix possible refcount leak in ctnetlink_create_conntrack()
	netfilter: ebtables: fix table blob use-after-free
	ipv6: Add lwtunnel encap size of all siblings in nexthop calculation
	sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop
	net: fix __dev_kfree_skb_any() vs drop monitor
	9p/xen: fix version parsing
	9p/xen: fix connection sequence
	9p/rdma: unmap receive dma buffer in rdma_request()/post_recv()
	net/mlx5: Geneve, Fix handling of Geneve object id as error code
	nfc: fix memory leak of se_io context in nfc_genl_se_io
	net/sched: act_sample: fix action bind logic
	ARM: dts: spear320-hmi: correct STMPE GPIO compatible
	tcp: tcp_check_req() can be called from process context
	vc_screen: modify vcs_size() handling in vcs_read()
	rtc: sun6i: Always export the internal oscillator
	scsi: ipr: Work around fortify-string warning
	loop: loop_set_status_from_info() check before assignment
	ASoC: adau7118: don't disable regulators on device unbind
	ASoC: zl38060: Remove spurious gpiolib select
	ASoC: zl38060 add gpiolib dependency
	thermal: intel: quark_dts: fix error pointer dereference
	thermal: intel: BXT_PMIC: select REGMAP instead of depending on it
	tracing: Add NULL checks for buffer in ring_buffer_free_read_page()
	firmware/efi sysfb_efi: Add quirk for Lenovo IdeaPad Duet 3
	bootconfig: Increase max nodes of bootconfig from 1024 to 8192 for DCC support
	mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak
	IB/hfi1: Update RMT size calculation
	media: uvcvideo: Handle cameras with invalid descriptors
	media: uvcvideo: Handle errors from calls to usb_string
	media: uvcvideo: Quirk for autosuspend in Logitech B910 and C910
	media: uvcvideo: Silence memcpy() run-time false positive warnings
	staging: emxx_udc: Add checks for dma_alloc_coherent()
	tty: fix out-of-bounds access in tty_driver_lookup_tty()
	tty: serial: fsl_lpuart: disable the CTS when send break signal
	serial: sc16is7xx: setup GPIO controller later in probe
	mei: bus-fixup:upon error print return values of send and receive
	tools/iio/iio_utils:fix memory leak
	iio: accel: mma9551_core: Prevent uninitialized variable in mma9551_read_status_word()
	iio: accel: mma9551_core: Prevent uninitialized variable in mma9551_read_config_word()
	PCI: loongson: Prevent LS7A MRRS increases
	usb: host: xhci: mvebu: Iterate over array indexes instead of using pointer math
	USB: ene_usb6250: Allocate enough memory for full object
	usb: uvc: Enumerate valid values for color matching
	usb: gadget: uvc: Make bSourceID read/write
	PCI: Align extra resources for hotplug bridges properly
	PCI: Take other bus devices into account when distributing resources
	kernel/fail_function: fix memory leak with using debugfs_lookup()
	PCI: loongson: Add more devices that need MRRS quirk
	PCI: Add ACS quirk for Wangxun NICs
	phy: rockchip-typec: Fix unsigned comparison with less than zero
	soundwire: cadence: Remove wasted space in response_buf
	soundwire: cadence: Drain the RX FIFO after an IO timeout
	net: tls: avoid hanging tasks on the tx_lock
	x86/resctrl: Apply READ_ONCE/WRITE_ONCE to task_struct.{rmid,closid}
	x86/resctl: fix scheduler confusion with 'current'
	drm/display/dp_mst: Fix down/up message handling after sink disconnect
	drm/display/dp_mst: Fix down message handling after a packet reception error
	Bluetooth: hci_sock: purge socket queues in the destruct() callback
	tcp: Fix listen() regression in 5.10.163
	drm/virtio: Fix error code in virtio_gpu_object_shmem_init()
	media: uvcvideo: Provide sync and async uvc_ctrl_status_event
	media: uvcvideo: Fix race condition with usb_kill_urb
	Revert "scsi: mpt3sas: Fix return value check of dma_get_required_mask()"
	scsi: mpt3sas: Don't change DMA mask while reallocating pools
	scsi: mpt3sas: re-do lost mpt3sas DMA mask fix
	scsi: mpt3sas: Remove usage of dma_get_required_mask() API
	malidp: Fix NULL vs IS_ERR() checking
	usb: gadget: uvc: fix missing mutex_unlock() if kstrtou8() fails
	Linux 5.10.173

Change-Id: Iedcbc093feb171d48c70976d0aa99e972fac3ad1
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-03-22 11:21:35 +00:00
Masahiro Yamada
44a2a912c7 linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h>
[ Upstream commit 0ab1438bad43d95877f848b7df551bd431680270 ]

<linux/kconfig.h> is included from all the kernel-space source files,
including C, assembly, linker scripts. It is intended to contain a
minimal set of macros to evaluate CONFIG options.

IF_ENABLED() is an intruder here because (x ? y : z) is C code, which
should not be included from assembly files or linker scripts.

Also, <linux/kconfig.h> is no longer self-contained because NULL is
defined in <linux/stddef.h>.

Move IF_ENABLED() out to <linux/kernel.h> as PTR_IF(). PTF_IF()
takes the general boolean expression instead of a CONFIG option
so that it fits better in <linux/kernel.h>.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Stable-dep-of: 18ab69c8ca56 ("Input: iqs269a - do not poll during suspend or resume")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-11 16:39:42 +01:00
Greg Kroah-Hartman
0ddb73d446 Merge 5.10.166 into android12-5.10-lts
Changes in 5.10.166
	clk: generalize devm_clk_get() a bit
	clk: Provide new devm_clk helpers for prepared and enabled clocks
	memory: atmel-sdramc: Fix missing clk_disable_unprepare in atmel_ramc_probe()
	memory: mvebu-devbus: Fix missing clk_disable_unprepare in mvebu_devbus_probe()
	ARM: dts: imx6ul-pico-dwarf: Use 'clock-frequency'
	ARM: dts: imx7d-pico: Use 'clock-frequency'
	ARM: dts: imx6qdl-gw560x: Remove incorrect 'uart-has-rtscts'
	arm64: dts: imx8mm-beacon: Fix ecspi2 pinmux
	ARM: imx: add missing of_node_put()
	HID: intel_ish-hid: Add check for ishtp_dma_tx_map
	EDAC/highbank: Fix memory leak in highbank_mc_probe()
	firmware: arm_scmi: Harden shared memory access in fetch_response
	firmware: arm_scmi: Harden shared memory access in fetch_notification
	tomoyo: fix broken dependency on *.conf.default
	RDMA/core: Fix ib block iterator counter overflow
	IB/hfi1: Reject a zero-length user expected buffer
	IB/hfi1: Reserve user expected TIDs
	IB/hfi1: Fix expected receive setup error exit issues
	IB/hfi1: Immediately remove invalid memory from hardware
	IB/hfi1: Remove user expected buffer invalidate race
	affs: initialize fsdata in affs_truncate()
	PM: AVS: qcom-cpr: Fix an error handling path in cpr_probe()
	phy: ti: fix Kconfig warning and operator precedence
	ARM: dts: at91: sam9x60: fix the ddr clock for sam9x60
	amd-xgbe: TX Flow Ctrl Registers are h/w ver dependent
	amd-xgbe: Delay AN timeout during KR training
	bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation
	phy: rockchip-inno-usb2: Fix missing clk_disable_unprepare() in rockchip_usb2phy_power_on()
	net: nfc: Fix use-after-free in local_cleanup()
	net: wan: Add checks for NULL for utdm in undo_uhdlc_init and unmap_si_regs
	gpio: mxc: Always set GPIOs used as interrupt source to INPUT mode
	wifi: rndis_wlan: Prevent buffer overflow in rndis_query_oid
	net/sched: sch_taprio: fix possible use-after-free
	l2tp: Serialize access to sk_user_data with sk_callback_lock
	l2tp: Don't sleep and disable BH under writer-side sk_callback_lock
	l2tp: convert l2tp_tunnel_list to idr
	l2tp: close all race conditions in l2tp_tunnel_register()
	net: usb: sr9700: Handle negative len
	net: mdio: validate parameter addr in mdiobus_get_phy()
	HID: check empty report_list in hid_validate_values()
	HID: check empty report_list in bigben_probe()
	net: stmmac: fix invalid call to mdiobus_get_phy()
	HID: revert CHERRY_MOUSE_000C quirk
	usb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait
	usb: gadget: f_fs: Ensure ep0req is dequeued before free_request
	net: mlx5: eliminate anonymous module_init & module_exit
	drm/panfrost: fix GENERIC_ATOMIC64 dependency
	dmaengine: Fix double increment of client_count in dma_chan_get()
	net: macb: fix PTP TX timestamp failure due to packet padding
	l2tp: prevent lockdep issue in l2tp_tunnel_register()
	HID: betop: check shape of output reports
	dmaengine: xilinx_dma: call of_node_put() when breaking out of for_each_child_of_node()
	nvme-pci: fix timeout request state check
	tcp: avoid the lookup process failing to get sk in ehash table
	w1: fix deadloop in __w1_remove_master_device()
	w1: fix WARNING after calling w1_process()
	driver core: Fix test_async_probe_init saves device in wrong array
	net: dsa: microchip: ksz9477: port map correction in ALU table entry register
	tcp: fix rate_app_limited to default to 1
	scsi: iscsi: Fix multiple iSCSI session unbind events sent to userspace
	cpufreq: Add Tegra234 to cpufreq-dt-platdev blocklist
	kcsan: test: don't put the expect array on the stack
	ASoC: fsl_micfil: Correct the number of steps on SX controls
	drm: Add orientation quirk for Lenovo ideapad D330-10IGL
	s390/debug: add _ASM_S390_ prefix to header guard
	cpufreq: armada-37xx: stop using 0 as NULL pointer
	ASoC: fsl_ssi: Rename AC'97 streams to avoid collisions with AC'97 CODEC
	ASoC: fsl-asoc-card: Fix naming of AC'97 CODEC widgets
	spi: spidev: remove debug messages that access spidev->spi without locking
	KVM: s390: interrupt: use READ_ONCE() before cmpxchg()
	scsi: hisi_sas: Set a port invalid only if there are no devices attached when refreshing port id
	platform/x86: touchscreen_dmi: Add info for the CSL Panther Tab HD
	platform/x86: asus-nb-wmi: Add alternate mapping for KEY_SCREENLOCK
	lockref: stop doing cpu_relax in the cmpxchg loop
	Revert "selftests/bpf: check null propagation only neither reg is PTR_TO_BTF_ID"
	netfilter: conntrack: do not renew entry stuck in tcp SYN_SENT state
	x86: ACPI: cstate: Optimize C3 entry on AMD CPUs
	fs: reiserfs: remove useless new_opts in reiserfs_remount
	sysctl: add a new register_sysctl_init() interface
	kernel/panic: move panic sysctls to its own file
	panic: unset panic_on_warn inside panic()
	ubsan: no need to unset panic_on_warn in ubsan_epilogue()
	kasan: no need to unset panic_on_warn in end_report()
	exit: Add and use make_task_dead.
	objtool: Add a missing comma to avoid string concatenation
	hexagon: Fix function name in die()
	h8300: Fix build errors from do_exit() to make_task_dead() transition
	csky: Fix function name in csky_alignment() and die()
	ia64: make IA64_MCA_RECOVERY bool instead of tristate
	panic: Separate sysctl logic from CONFIG_SMP
	exit: Put an upper limit on how often we can oops
	exit: Expose "oops_count" to sysfs
	exit: Allow oops_limit to be disabled
	panic: Consolidate open-coded panic_on_warn checks
	panic: Introduce warn_limit
	panic: Expose "warn_count" to sysfs
	docs: Fix path paste-o for /sys/kernel/warn_count
	exit: Use READ_ONCE() for all oops/warn limit reads
	Bluetooth: hci_sync: cancel cmd_timer if hci_open failed
	xhci: Set HCD flag to defer primary roothub registration
	scsi: hpsa: Fix allocation size for scsi_host_alloc()
	module: Don't wait for GOING modules
	tracing: Make sure trace_printk() can output as soon as it can be used
	trace_events_hist: add check for return value of 'create_hist_field'
	ftrace/scripts: Update the instructions for ftrace-bisect.sh
	cifs: Fix oops due to uncleared server->smbd_conn in reconnect
	KVM: x86/vmx: Do not skip segment attributes if unusable bit is set
	thermal: intel: int340x: Protect trip temperature from concurrent updates
	ARM: 9280/1: mm: fix warning on phys_addr_t to void pointer assignment
	EDAC/device: Respect any driver-supplied workqueue polling value
	EDAC/qcom: Do not pass llcc_driv_data as edac_device_ctl_info's pvt_info
	units: Add Watt units
	units: Add SI metric prefix definitions
	i2c: designware: Use DIV_ROUND_CLOSEST() macro
	i2c: designware: use casting of u64 in clock multiplication to avoid overflow
	netlink: prevent potential spectre v1 gadgets
	net: fix UaF in netns ops registration error path
	netfilter: nft_set_rbtree: Switch to node list walk for overlap detection
	netfilter: nft_set_rbtree: skip elements in transaction from garbage collection
	netlink: annotate data races around nlk->portid
	netlink: annotate data races around dst_portid and dst_group
	netlink: annotate data races around sk_state
	ipv4: prevent potential spectre v1 gadget in ip_metrics_convert()
	ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
	netfilter: conntrack: fix vtag checks for ABORT/SHUTDOWN_COMPLETE
	netrom: Fix use-after-free of a listening socket.
	net/sched: sch_taprio: do not schedule in taprio_reset()
	sctp: fail if no bound addresses can be used for a given scope
	net: ravb: Fix possible hang if RIS2_QFF1 happen
	thermal: intel: int340x: Add locking to int340x_thermal_get_trip_type()
	net/tg3: resolve deadlock in tg3_reset_task() during EEH
	net: mdio-mux-meson-g12a: force internal PHY off on mux switch
	tools: gpio: fix -c option of gpio-event-mon
	Revert "Input: synaptics - switch touchpad on HP Laptop 15-da3001TU to RMI mode"
	nouveau: explicitly wait on the fence in nouveau_bo_move_m2mf
	nfsd: Ensure knfsd shuts down when the "nfsd" pseudofs is unmounted
	Revert "selftests/ftrace: Update synthetic event syntax errors"
	block: fix and cleanup bio_check_ro
	x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
	netfilter: conntrack: unify established states for SCTP paths
	perf/x86/amd: fix potential integer overflow on shift of a int
	clk: Fix pointer casting to prevent oops in devm_clk_release()
	Linux 5.10.166

Change-Id: Ibf582f7504221c6ee1648da95c49b45e3678708c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-02-17 12:18:56 +00:00
Kees Cook
55eba18262 panic: Consolidate open-coded panic_on_warn checks
commit 79cc1ba7badf9e7a12af99695a557e9ce27ee967 upstream.

Several run-time checkers (KASAN, UBSAN, KFENCE, KCSAN, sched) roll
their own warnings, and each check "panic_on_warn". Consolidate this
into a single function so that future instrumentation can be added in
a single location.

Cc: Marco Elver <elver@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ben Segall <bsegall@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Gow <davidgow@google.com>
Cc: tangmeng <tangmeng@uniontech.com>
Cc: Jann Horn <jannh@google.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: kasan-dev@googlegroups.com
Cc: linux-mm@kvack.org
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Link: https://lore.kernel.org/r/20221117234328.594699-4-keescook@chromium.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-01 08:23:20 +01:00
tangmeng
e97ec099d7 kernel/panic: move panic sysctls to its own file
commit 9df918698408fd914493aba0b7858fef50eba63a upstream.

kernel/sysctl.c is a kitchen sink where everyone leaves their dirty
dishes, this makes it very difficult to maintain.

To help with this maintenance let's start by moving sysctls to places
where they actually belong.  The proc sysctl maintainers do not want to
know what sysctl knobs you wish to add for your own piece of code, we
just care about the core logic.

All filesystem syctls now get reviewed by fs folks. This commit
follows the commit of fs, move the oops_all_cpu_backtrace sysctl to
its own file, kernel/panic.c.

Signed-off-by: tangmeng <tangmeng@uniontech.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-01 08:23:18 +01:00
Greg Kroah-Hartman
2ed28105c6 ANDROID: GKI: update the abi .xml file due to hex_to_bin() changes
Commit 616d354fb9 ("hex2bin: make the function hex_to_bin
constant-time") in 5.10.114 changed the signature of the hex_to_bin()
function to fix a key leak attack vector.  This is not an abi break as
older modules that use the function will still work properly, and the
CRC is preserved, but this resolves any issues going forward as well.

Leaf changes summary: 1 artifact changed
Changed leaf types summary: 0 leaf type changed
Removed/Changed/Added functions summary: 0 Removed, 1 Changed, 0 Added function
Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable

1 function with some sub-type change:

  [C] 'function int hex_to_bin(char)' at hexdump.c:53:1 has some sub-type changes:
    parameter 1 of type 'char' changed:
      type name changed from 'char' to 'unsigned char'
      type size hasn't changed

Fixes: 616d354fb9 ("hex2bin: make the function hex_to_bin constant-time")
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I26b2283300369049abc831072df9a5ace3e770d1
2022-05-13 13:47:02 +02:00
Mikulas Patocka
616d354fb9 hex2bin: make the function hex_to_bin constant-time
commit e5be15767e7e284351853cbaba80cde8620341fb upstream.

The function hex2bin is used to load cryptographic keys into device
mapper targets dm-crypt and dm-integrity.  It should take constant time
independent on the processed data, so that concurrently running
unprivileged code can't infer any information about the keys via
microarchitectural convert channels.

This patch changes the function hex_to_bin so that it contains no
branches and no memory accesses.

Note that this shouldn't cause performance degradation because the size
of the new function is the same as the size of the old function (on
x86-64) - and the new function causes no branch misprediction penalties.

I compile-tested this function with gcc on aarch64 alpha arm hppa hppa64
i386 ia64 m68k mips32 mips64 powerpc powerpc64 riscv sh4 s390x sparc32
sparc64 x86_64 and with clang on aarch64 arm hexagon i386 mips32 mips64
powerpc powerpc64 s390x sparc32 sparc64 x86_64 to verify that there are
no branches in the generated code.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-09 09:04:59 +02:00
Joe Perches
33def8498f treewide: Convert macro and uses of __section(foo) to __section("foo")
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.

Remove the quote operator # from compiler_attributes.h __section macro.

Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.

Conversion done using the script at:

    https://lore.kernel.org/lkml/75393e5ddc272dc7403de74d645e6c6e0f4e70eb.camel@perches.com/2-convert_section.pl

Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@gooogle.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-25 14:51:49 -07:00
Andy Shevchenko
b296a6d533 kernel.h: split out min()/max() et al. helpers
kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out min()/max()
et al.  helpers.

At the same time convert users in header and lib folder to use new header.
Though for time being include new header back to kernel.h to avoid
twisted indirected includes for other existing users.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Joe Perches <joe@perches.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200910164152.GA1891694@smile.fi.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-16 11:11:19 -07:00
Linus Torvalds
d594d8f411 Merge tag 'printk-for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
 "The big new thing is the fully lockless ringbuffer implementation,
  including the support for continuous lines. It will allow to store and
  read messages in any situation wihtout the risk of deadlocks and
  without the need of temporary per-CPU buffers.

  The access is still serialized by logbuf_lock. It synchronizes few
  more operations, for example, temporary buffer for formatting the
  message, syslog and kmsg_dump operations. The lock removal is being
  discussed and should be ready for the next release.

  The continuous lines are handled exactly the same way as before to
  avoid regressions in user space. It means that they are appended to
  the last message when the caller is the same. Only the last message
  can be extended.

  The data ring includes plain text of the messages. Except for an
  integer at the beginning of each message that points back to the
  descriptor ring with other metadata.

  The dictionary has to stay. journalctl uses it to filter the log. It
  allows to show messages related to a given device. The dictionary
  values are stored in the descriptor ring with the other metadata.

  This is the first part of the printk rework as discussed at Plumbers
  2019, see https://lore.kernel.org/r/87k1acz5rx.fsf@linutronix.de. The
  next big step will be handling consoles by kthreads during the normal
  system operation. It will require special handling of situations when
  the kthreads could not get scheduled, for example, early boot,
  suspend, panic.

  Other changes:

   - Add John Ogness as a reviewer for printk subsystem. He is author of
     the rework and is familiar with the code and history.

   - Fix locking in serial8250_do_startup() to prevent lockdep report.

   - Few code cleanups"

* tag 'printk-for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: (27 commits)
  printk: Use fallthrough pseudo-keyword
  printk: reduce setup_text_buf size to LOG_LINE_MAX
  printk: avoid and/or handle record truncation
  printk: remove dict ring
  printk: move dictionary keys to dev_printk_info
  printk: move printk_info into separate array
  printk: reimplement log_cont using record extension
  printk: ringbuffer: add finalization/extension support
  printk: ringbuffer: change representation of states
  printk: ringbuffer: clear initial reserved fields
  printk: ringbuffer: add BLK_DATALESS() macro
  printk: ringbuffer: relocate get_data()
  printk: ringbuffer: avoid memcpy() on state_var
  printk: ringbuffer: fix setting state in desc_read()
  kernel.h: Move oops_in_progress to printk.h
  scripts/gdb: update for lockless printk ringbuffer
  scripts/gdb: add utils.read_ulong()
  docs: vmcoreinfo: add lockless printk ringbuffer vmcoreinfo
  printk: reduce LOG_BUF_SHIFT range for H8300
  printk: ringbuffer: support dataless records
  ...
2020-10-13 15:58:10 -07:00
Andy Shevchenko
36d818f610 kernel.h: Move oops_in_progress to printk.h
The oops_in_progress is defined in printk.c, so it's logical
to move oops_in_progress to printk.h.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20200911170202.8565-1-andriy.shevchenko@linux.intel.com
2020-09-15 13:51:08 +02:00
Herbert Xu
ef91bb196b kernel.h: Silence sparse warning in lower_32_bits
I keep getting sparse warnings in crypto such as:

  CHECK   drivers/crypto/ccree/cc_hash.c
   drivers/crypto/ccree/cc_hash.c:49:9: warning: cast truncates bits from constant value (47b5481dbefa4fa4 becomes befa4fa4)
   drivers/crypto/ccree/cc_hash.c:49:26: warning: cast truncates bits from constant value (db0c2e0d64f98fa7 becomes 64f98fa7)
   [.. many more ..]

This patch removes the warning by adding a mask to keep sparse
happy.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-28 11:21:20 -07:00
Yue Hu
63037f7472 panic: make print_oops_end_marker() static
Since print_oops_end_marker() is not used externally, also remove it in
kernel.h at the same time.

Signed-off-by: Yue Hu <huyue2@yulong.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/20200724011516.12756-1-zbestahu@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12 10:58:02 -07:00
Tiezhu Yang
79076e1241 kernel/panic.c: make oops_may_print() return bool
The return value of oops_may_print() is true or false, so change its type
to reflect that.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Xuefeng Li <lixuefeng@loongson.cn>
Link: http://lkml.kernel.org/r/1591103358-32087-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12 10:58:01 -07:00
Kars Mulder
ef0f268533 kstrto*: do not describe simple_strto*() as obsolete/replaced
The documentation of the kstrto*() functions describes kstrto*() as
"replacements" of the "obsolete" simple_strto*() functions.  Both of these
terms are inaccurate: they're not replacements because they have different
behaviour, and the simple_strto*() are not obsolete because there are
cases where they have benefits over kstrto*().

Remove usage of the terms "replacement" and "obsolete" in reference to
simple_strto*(), and instead use the term "preferred over".

Fixes: 4c925d6031 ("kstrto*: add documentation")
Fixes: 885e68e8b7 ("kernel.h: update comment about simple_strto<foo>() functions")
Signed-off-by: Kars Mulder <kerneldev@karsmulder.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Eldad Zack <eldad@fogrefinery.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Mans Rullgard <mans@mansr.com>
Cc: Petr Mladek <pmladek@suse.com>
Link: http://lkml.kernel.org/r/29b9-5f234c80-13-4e3aa200@244003027
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12 10:58:00 -07:00
Kars Mulder
b642e44e8a kstrto*: correct documentation references to simple_strto*()
The documentation of the kstrto*() functions reference the simple_strtoull
function by "used as a replacement for [the obsolete] simple_strtoull".
All these functions describes themselves as replacements for the function
simple_strtoull, even though a function like kstrtol() would be more aptly
described as a replacement of simple_strtol().

Fix these references by making the documentation of kstrto*() reference
the closest simple_strto*() equivalent available.  The functions
kstrto[u]int() do not have direct simple_strto[u]int() equivalences, so
these are made to refer to simple_strto[u]l() instead.

Furthermore, add parentheses after function names, as is standard in
kernel documentation.

Fixes: 4c925d6031 ("kstrto*: add documentation")
Signed-off-by: Kars Mulder <kerneldev@karsmulder.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Eldad Zack <eldad@fogrefinery.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Mans Rullgard <mans@mansr.com>
Cc: Petr Mladek <pmladek@suse.com>
Link: http://lkml.kernel.org/r/1ee1-5f234c00-f3-165a6440@234394593
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12 10:58:00 -07:00
Arvind Sankar
376653435d kernel.h: remove duplicate include of asm/div64.h
This seems to have been added inadvertently in commit
  72deb455b5 ("block: remove CONFIG_LBDAF")

Fixes: 72deb455b5 ("block: remove CONFIG_LBDAF")
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20200727034852.2813453-1-nivedita@alum.mit.edu
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-12 10:57:59 -07:00
Kishon Vijay Abraham I
229f5879fa linux/kernel.h: Add PTR_ALIGN_DOWN macro
Add a macro for aligning down a pointer. This is useful to get an
aligned register address when a device allows only word access and
doesn't allow half word or byte access.

Link: https://lore.kernel.org/r/20200722110317.4744-4-kishon@ti.com
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
2020-07-27 15:46:16 +01:00
Guilherme G. Piccoli
60c958d8df panic: add sysctl to dump all CPUs backtraces on oops event
Usually when the kernel reaches an oops condition, it's a point of no
return; in case not enough debug information is available in the kernel
splat, one of the last resorts would be to collect a kernel crash dump
and analyze it.  The problem with this approach is that in order to
collect the dump, a panic is required (to kexec-load the crash kernel).
When in an environment of multiple virtual machines, users may prefer to
try living with the oops, at least until being able to properly shutdown
their VMs / finish their important tasks.

This patch implements a way to collect a bit more debug details when an
oops event is reached, by printing all the CPUs backtraces through the
usage of NMIs (on architectures that support that).  The sysctl added
(and documented) here was called "oops_all_cpu_backtrace", and when set
will (as the name suggests) dump all CPUs backtraces.

Far from ideal, this may be the last option though for users that for
some reason cannot panic on oops.  Most of times oopses are clear enough
to indicate the kernel portion that must be investigated, but in virtual
environments it's possible to observe hypervisor/KVM issues that could
lead to oopses shown in other guests CPUs (like virtual APIC crashes).
This patch hence aims to help debug such complex issues without
resorting to kdump.

Signed-off-by: Guilherme G. Piccoli <gpiccoli@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Matthew Wilcox <willy@infradead.org>
Link: http://lkml.kernel.org/r/20200327224116.21030-1-gpiccoli@canonical.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08 11:05:56 -07:00
Rafael Aquini
db38d5c106 kernel: add panic_on_taint
Analogously to the introduction of panic_on_warn, this patch introduces
a kernel option named panic_on_taint in order to provide a simple and
generic way to stop execution and catch a coredump when the kernel gets
tainted by any given flag.

This is useful for debugging sessions as it avoids having to rebuild the
kernel to explicitly add calls to panic() into the code sites that
introduce the taint flags of interest.

For instance, if one is interested in proceeding with a post-mortem
analysis at the point a given code path is hitting a bad page (i.e.
unaccount_page_cache_page(), or slab_bug()), a coredump can be collected
by rebooting the kernel with 'panic_on_taint=0x20' amended to the
command line.

Another, perhaps less frequent, use for this option would be as a means
for assuring a security policy case where only a subset of taints, or no
single taint (in paranoid mode), is allowed for the running system.  The
optional switch 'nousertaint' is handy in this particular scenario, as
it will avoid userspace induced crashes by writes to sysctl interface
/proc/sys/kernel/tainted causing false positive hits for such policies.

[akpm@linux-foundation.org: tweak kernel-parameters.txt wording]

Suggested-by: Qian Cai <cai@lca.pw>
Signed-off-by: Rafael Aquini <aquini@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Adrian Bunk <bunk@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Takashi Iwai <tiwai@suse.de>
Link: http://lkml.kernel.org/r/20200515175502.146720-1-aquini@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08 11:05:56 -07:00
Thomas Gleixner
4e139c7711 sched: Provide cant_migrate()
Some code pathes rely on preempt_disable() to prevent migration on a non RT
enabled kernel. These preempt_disable/enable() pairs are substituted by
migrate_disable/enable() pairs or other forms of RT specific protection. On
RT these protections prevent migration but not preemption. Obviously a
cant_sleep() check in such a section will trigger on RT because preemption
is not disabled.

Provide a cant_migrate() macro which maps to cant_sleep() on a non RT
kernel and an empty placeholder for RT for now. The placeholder will be
changed to a proper debug check along with the RT specific migration
protection mechanism.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200214161503.070487511@linutronix.de
2020-02-20 21:17:24 +01:00
Kees Cook
1f07dcc459 kernel.h: Remove unused FIELD_SIZEOF()
Now that all callers of FIELD_SIZEOF() have been converted to
sizeof_field(), remove the unused prior macro.

Signed-off-by: Kees Cook <keescook@chromium.org>
2019-12-30 12:01:56 -08:00
Andy Shevchenko
885e68e8b7 kernel.h: update comment about simple_strto<foo>() functions
There were discussions in the past about use cases for
simple_strto<foo>() functions and, in some rare cases, they have a
benefit over kstrto<foo>() ones.

Update a comment to reduce confusion about special use cases.

Link: http://lkml.kernel.org/r/20190801192904.41087-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Suggested-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Mans Rullgard <mans@mansr.com>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-12-04 19:44:12 -08:00
Will Deacon
2f30b36943 locking/refcount: Remove unused 'refcount_error_report()' function
'refcount_error_report()' has no callers. Remove it.

Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Kees Cook <keescook@chromium.org>
Tested-by: Hanjun Guo <guohanjun@huawei.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20191121115902.2551-10-will@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-25 09:15:42 +01:00
Daniel Vetter
312364f353 kernel.h: Add non_block_start/end()
In some special cases we must not block, but there's not a spinlock,
preempt-off, irqs-off or similar critical section already that arms the
might_sleep() debug checks. Add a non_block_start/end() pair to annotate
these.

This will be used in the oom paths of mmu-notifiers, where blocking is not
allowed to make sure there's forward progress. Quoting Michal:

"The notifier is called from quite a restricted context - oom_reaper -
which shouldn't depend on any locks or sleepable conditionals. The code
should be swift as well but we mostly do care about it to make a forward
progress. Checking for sleepable context is the best thing we could come
up with that would describe these demands at least partially."

Peter also asked whether we want to catch spinlocks on top, but Michal
said those are less of a problem because spinlocks can't have an indirect
dependency upon the page allocator and hence close the loop with the oom
reaper.

Suggested by Michal Hocko.

Link: https://lore.kernel.org/r/20190826201425.17547-4-daniel.vetter@ffwll.ch
Acked-by: Christian König <christian.koenig@amd.com> (v1)
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-09-07 04:28:05 -03:00
Alexey Dobriyan
ce251e0e3c include/linux/kernel.h: add typeof_member() macro
Add typeof_member() macro so that types can be extracted without
introducing dummy variables.

Link: http://lkml.kernel.org/r/20190529190720.GA5703@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-07-16 19:23:21 -07:00
Vinod Koul
8f9fab480c linux/kernel.h: fix overflow for DIV_ROUND_UP_ULL
DIV_ROUND_UP_ULL adds the two arguments and then invokes
DIV_ROUND_DOWN_ULL.  But on a 32bit system the addition of two 32 bit
values can overflow.  DIV_ROUND_DOWN_ULL does it correctly and stashes
the addition into a unsigned long long so cast the result to unsigned
long long here to avoid the overflow condition.

[akpm@linux-foundation.org: DIV_ROUND_UP_ULL must be an rval]
Link: http://lkml.kernel.org/r/20190625100518.30753-1-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-06-29 16:43:45 +08:00
Andy Shevchenko
9f61589469 lib/math: move int_pow() from pwm_bl.c for wider use
The integer exponentiation is used in few places and might be used in
the future by other call sites.  Move it to wider use.

Link: http://lkml.kernel.org/r/20190323172531.80025-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14 19:52:49 -07:00
Jens Axboe
5c61ee2cd5 Merge tag 'v5.1-rc6' into for-5.2/block
Pull in v5.1-rc6 to resolve two conflicts. One is in BFQ, in just a
comment, and is trivial. The other one is a conflict due to a later fix
in the bio multi-page work, and needs a bit more care.

* tag 'v5.1-rc6': (770 commits)
  Linux 5.1-rc6
  block: make sure that bvec length can't be overflow
  block: kill all_q_node in request_queue
  x86/cpu/intel: Lower the "ENERGY_PERF_BIAS: Set to normal" message's log priority
  coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
  mm/kmemleak.c: fix unused-function warning
  init: initialize jump labels before command line option parsing
  kernel/watchdog_hld.c: hard lockup message should end with a newline
  kcov: improve CONFIG_ARCH_HAS_KCOV help text
  mm: fix inactive list balancing between NUMA nodes and cgroups
  mm/hotplug: treat CMA pages as unmovable
  proc: fixup proc-pid-vm test
  proc: fix map_files test on F29
  mm/vmstat.c: fix /proc/vmstat format for CONFIG_DEBUG_TLBFLUSH=y CONFIG_SMP=n
  mm/memory_hotplug: do not unlock after failing to take the device_hotplug_lock
  mm: swapoff: shmem_unuse() stop eviction without igrab()
  mm: swapoff: take notice of completion sooner
  mm: swapoff: remove too limiting SWAP_UNUSE_MAX_TRIES
  mm: swapoff: shmem_find_swap_entries() filter out other types
  slab: store tagged freelist for off-slab slabmgmt
  ...

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-04-22 09:47:36 -06:00
Christoph Hellwig
72deb455b5 block: remove CONFIG_LBDAF
Currently support for 64-bit sector_t and blkcnt_t is optional on 32-bit
architectures.  These types are required to support block device and/or
file sizes larger than 2 TiB, and have generally defaulted to on for
a long time.  Enabling the option only increases the i386 tinyconfig
size by 145 bytes, and many data structures already always use
64-bit values for their in-core and on-disk data structures anyway,
so there should not be a large change in dynamic memory usage either.

Dropping this option removes a somewhat weird non-default config that
has cause various bugs or compiler warnings when actually used.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-04-06 10:48:35 -06:00
Jann Horn
a0fe2c6479 linux/kernel.h: Use parentheses around argument in u64_to_user_ptr()
Use parentheses around uses of the argument in u64_to_user_ptr() to
ensure that the cast doesn't apply to part of the argument.

There are existing uses of the macro of the form

  u64_to_user_ptr(A + B)

which expands to

  (void __user *)(uintptr_t)A + B

(the cast applies to the first operand of the addition, the addition
is a pointer addition). This happens to still work as intended, the
semantic difference doesn't cause a difference in behavior.

But I want to use u64_to_user_ptr() with a ternary operator in the
argument, like so:

  u64_to_user_ptr(A ? B : C)

This currently doesn't work as intended.

Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Cc: Andrei Vagin <avagin@openvz.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: NeilBrown <neilb@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Qiaowei Ren <qiaowei.ren@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190329214652.258477-1-jannh@google.com
2019-04-03 11:43:49 +02:00
Masahiro Yamada
54d50897d5 linux/kernel.h: split *_MAX and *_MIN macros into <linux/limits.h>
<linux/kernel.h> tends to be cluttered because we often put various sort
of unrelated stuff in it.  So, we have split out a sensible chunk of
code into a separate header from time to time.

This commit splits out the *_MAX and *_MIN defines.

The standard header <limits.h> contains various MAX, MIN constants
including numerial limits.  [1]

I think it makes sense to move in-kernel MAX, MIN constants into
include/linux/limits.h.

We already have include/uapi/linux/limits.h to contain some user-space
constants.  I changed its include guard to _UAPI_LINUX_LIMITS_H.  This
change has no impact to the user-space because
scripts/headers_install.sh rips off the '_UAPI' prefix from the include
guards of exported headers.

[1] http://pubs.opengroup.org/onlinepubs/009604499/basedefs/limits.h.html

Link: http://lkml.kernel.org/r/1549156242-20806-2-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Alex Elder <elder@linaro.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07 18:31:59 -08:00
Masahiro Yamada
2dc0e68d5a linux/kernel.h: use 'short' to define USHRT_MAX, SHRT_MAX, SHRT_MIN
The commit log of 44f564a4bf ("ipc: add definitions of USHORT_MAX and
others") did not explain why it used (s16) and (u16) instead of (short)
and (unsigned short).

Let's use (short) and (unsigned short), which is more sensible, and more
consistent with the other MAX/MIN defines.

As you see in include/uapi/asm-generic/int-ll64.h, s16/u16 are
typedef'ed as signed/unsigned short.  So, this commit does not have a
functional change.

Remove the unneeded parentheses around ~0U while we are here.

Link: http://lkml.kernel.org/r/1549156242-20806-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Zhang Yanmin <yanmin.zhang@intel.com>
Cc: Alex Elder <elder@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07 18:31:59 -08:00
Randy Dunlap
b95c4d18d5 <linux/kernel.h>: drop the gcc-3.3 'const' hack in roundup()
The single quotation marks around "const" were causing a documentation
markup warning with reST.  Instead of fixing that warning, just delete
that comment line and the gcc-3.3 hack of using "const" in the roundup()
macro since gcc-3.3 is no longer supported for kernel builds.

I did around 20 different $arch builds with no problems, but we'll just
have to see if this causes problems for anyone else out there.

Link: http://lkml.kernel.org/r/ec5dcf72-7c3e-3513-af0c-4003ed598854@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07 18:31:59 -08:00
Jani Nikula
c461aed3a4 kernel.h: unconditionally include asm/div64.h for do_div()
Include asm/div64.h for do_div() usage in DIV_ROUND_DOWN_ULL() and
DIV_ROUND_CLOSEST_ULL().  Remove the old CONFIG_LBDAF=y conditional
include.

Link: http://lkml.kernel.org/r/20181228153430.23763-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07 18:31:59 -08:00
Peter Zijlstra
568f196756 bpf: check that BPF programs run with preemption disabled
Introduce cant_sleep() macro for annotation of functions that
cannot sleep.

Use it in BPF_PROG_RUN to catch execution of BPF programs in
preemptable context.

Suggested-by: Jann Horn <jannh@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-19 21:53:07 +01:00
Feng Tang
81c9d43f94 kernel/sysctl: add panic_print into sysctl
So that we can also runtime chose to print out the needed system info
for panic, other than setting the kernel cmdline.

Link: http://lkml.kernel.org/r/1543398842-19295-3-git-send-email-feng.tang@intel.com
Signed-off-by: Feng Tang <feng.tang@intel.com>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-04 13:13:47 -08:00
Kees Cook
cedc5b6aab kernel.h: documentation for roundup() vs round_up()
Things like 3619dec510 ("dh key: fix rounding up KDF output length")
expose the lack of explicit documentation for roundup() vs round_up().  At
least we can try to document it better if anyone goes looking.

Link: http://lkml.kernel.org/r/20180703041950.GA43464@beast
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-22 10:52:46 -07:00
Wei Wang
8730662d7b kernel.h: Fix a typo in comment
Signed-off-by: Wei Wang <wvw@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Crt Mori <cmo@melexis.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: gregkh@linuxfoundation.org
Cc: wei.vince.wang@gmail.com
Link: https://lkml.kernel.org/lkml/20180424212241.16013-1-wvw@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-06-21 17:39:18 +02:00
Linus Torvalds
eafdca4d70 Merge tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO updates from Greg KH:
 "Here is the big staging and IIO driver update for 4.18-rc1.

  It was delayed as I wanted to make sure the final driver deletions did
  not cause any major merge issues, and all now looks good.

  There are a lot of patches here, just over 1000. The diffstat summary
  shows the major changes here:

	1007 files changed, 16828 insertions(+), 227770 deletions(-)

  Because of this, we might be close to shrinking the overall kernel
  source code size for two releases in a row.

  There was loads of work in this release cycle, primarily:

   - tons of ks7010 driver cleanups

   - lots of mt7621 driver fixes and cleanups

   - most driver cleanups

   - wilc1000 fixes and cleanups

   - lots and lots of IIO driver cleanups and new additions

   - debugfs cleanups for all staging drivers

   - lots of other staging driver cleanups and fixes, the shortlog has
     the full details.

  but the big user-visable things here are the removal of 3 chunks of
  code:

   - ncpfs and ipx were removed on schedule, no one has cared about this
     code since it moved to staging last year, and if it needs to come
     back, it can be reverted.

   - lustre file system is removed.

     I've ranted at the lustre developers about once a year for the past
     5 years, with no real forward progress at all to clean things up
     and get the code into the "real" part of the kernel.

     Given that the lustre developers continue to work on an external
     tree and try to port those changes to the in-kernel tree every once
     in a while, this whole thing really really is not working out at
     all. So I'm deleting it so that the developers can spend the time
     working in their out-of-tree location and get things cleaned up
     properly to get merged into the tree correctly at a later date.

  Because of these file removals, you will have merge issues on some of
  these files (2 in the ipx code, 1 in the ncpfs code, and 1 in the
  atomisp driver). Just delete those files, it's a simple merge :)

  All of this has been in linux-next for a while with no reported
  problems"

* tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1011 commits)
  staging: ipx: delete it from the tree
  ncpfs: remove uapi .h files
  ncpfs: remove Documentation
  ncpfs: remove compat functionality
  staging: ncpfs: delete it
  staging: lustre: delete the filesystem from the tree.
  staging: vc04_services: no need to save the log debufs dentries
  staging: vc04_services: vchiq_debugfs_log_entry can be a void *
  staging: vc04_services: remove struct vchiq_debugfs_info
  staging: vc04_services: move client dbg directory into static variable
  staging: vc04_services: remove odd vchiq_debugfs_top() wrapper
  staging: vc04_services: no need to check debugfs return values
  staging: mt7621-gpio: reorder includes alphabetically
  staging: mt7621-gpio: change gc_map to don't use pointers
  staging: mt7621-gpio: use GPIOF_DIR_OUT and GPIOF_DIR_IN macros instead of custom values
  staging: mt7621-gpio: change 'to_mediatek_gpio' to make just a one line return
  staging: mt7621-gpio: dt-bindings: update documentation for #interrupt-cells property
  staging: mt7621-gpio: update #interrupt-cells for the gpio node
  staging: mt7621-gpio: dt-bindings: complete documentation for the gpio
  staging: mt7621-dts: add missing properties to gpio node
  ...
2018-06-09 10:32:39 -07:00
Stefan Agner
1c4bc43ddf mm/memblock: introduce PHYS_ADDR_MAX
So far code was using ULLONG_MAX and type casting to obtain a
phys_addr_t with all bits set.  The typecast is necessary to silence
compiler warnings on 32-bit platforms.

Use the simpler but still type safe approach "~(phys_addr_t)0" to create a
preprocessor define for all bits set.

Link: http://lkml.kernel.org/r/20180406213809.566-1-stefan@agner.ch
Signed-off-by: Stefan Agner <stefan@agner.ch>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07 17:34:35 -07:00
Thomas Gleixner
c1a957d170 PM / suspend: Prevent might sleep splats
timekeeping suspend/resume calls read_persistent_clock() which takes
rtc_lock. That results in might sleep warnings because at that point
we run with interrupts disabled.

We cannot convert rtc_lock to a raw spinlock as that would trigger
other might sleep warnings.

As a workaround we disable the might sleep warnings by setting
system_state to SYSTEM_SUSPEND before calling sysdev_suspend() and
restoring it to SYSTEM_RUNNING afer sysdev_resume(). There is no lock
contention because hibernate / suspend to RAM is single-CPU at this
point.

In s2idle's case the system_state is set to SYSTEM_SUSPEND before
timekeeping_suspend() which is invoked by the last CPU. In the resume
case it set back to SYSTEM_RUNNING after timekeeping_resume() which is
invoked by the first CPU in the resume case. The other CPUs will block
on tick_freeze_lock.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[bigeasy: cover s2idle in tick_freeze() / tick_unfreeze()]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-27 11:55:02 +02:00
Dan Carpenter
227abcc6da staging: kernel.h: Prevent macro expantion bug in container_of_safe()
There aren't many users of this so it doesn't cause a problem, but we
obviously want to use "__mptr" here instead of "ptr" to prevent the
parameter from being executed twice.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-26 09:17:34 +02:00
NeilBrown
05e6557b8e staging: lustre: add container_of_safe()
Luster has a container_of0() function which is similar to
container_of() but passes an IS_ERR_OR_NULL() pointer through
unchanged.
This could be generally useful: bcache at last has a similar function.

Naming is hard, but the precedent set by hlist_entry_safe() suggests
a _safe suffix might be most consistent.

So add container_of_safe() to kernel.h, and replace all occurrences of
container_of0() with one of
  - list_first_entry, list_next_entry, when that is a better fit,
  - container_of(), when the pointer is used as a validpointer in
    surrounding code,
  - container_of_safe() when there is no obviously better alternative.

Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-23 15:16:58 +02:00
Kees Cook
bc4f2f5469 taint: add taint for randstruct
Since the randstruct plugin can intentionally produce extremely unusual
kernel structure layouts (even performance pathological ones), some
maintainers want to be able to trivially determine if an Oops is coming
from a randstruct-built kernel, so as to keep their sanity when
debugging.  This adds the new flag and initializes taint_mask
immediately when built with randstruct.

Link: http://lkml.kernel.org/r/1519084390-43867-4-git-send-email-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11 10:28:35 -07:00
Kees Cook
47d4b263a2 taint: convert to indexed initialization
This converts to using indexed initializers instead of comments, adds a
comment on why the taint flags can't be an enum, and make sure that no
one forgets to update the taint_flags when adding new bits.

Link: http://lkml.kernel.org/r/1519084390-43867-2-git-send-email-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11 10:28:34 -07:00
Andrei Vagin
d1be35cb6f proc: add seq_put_decimal_ull_width to speed up /proc/pid/smaps
seq_put_decimal_ull_w(m, str, val, width) prints a decimal number with a
specified minimal field width.

It is equivalent of seq_printf(m, "%s%*d", str, width, val), but it
works much faster.

== test_smaps.py
  num = 0
  with open("/proc/1/smaps") as f:
          for x in xrange(10000):
                  data = f.read()
                  f.seek(0, 0)
==

== Before patch ==
  $ time python test_smaps.py
  real    0m4.593s
  user    0m0.398s
  sys     0m4.158s

== After patch ==
  $ time python test_smaps.py
  real    0m3.828s
  user    0m0.413s
  sys     0m3.408s

$ perf -g record python test_smaps.py
== Before patch ==
-   79.01%     3.36%  python   [kernel.kallsyms]    [k] show_smap.isra.33
   - 75.65% show_smap.isra.33
      + 48.85% seq_printf
      + 15.75% __walk_page_range
      + 9.70% show_map_vma.isra.23
        0.61% seq_puts

== After patch ==
-   75.51%     4.62%  python   [kernel.kallsyms]    [k] show_smap.isra.33
   - 70.88% show_smap.isra.33
      + 24.82% seq_put_decimal_ull_w
      + 19.78% __walk_page_range
      + 12.74% seq_printf
      + 11.08% show_map_vma.isra.23
      + 1.68% seq_puts

[akpm@linux-foundation.org: fix drivers/of/unittest.c build]
Link: http://lkml.kernel.org/r/20180212074931.7227-1-avagin@openvz.org
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11 10:28:33 -07:00
Linus Torvalds
e9092d0d97 Fix subtle macro variable shadowing in min_not_zero()
Commit 3c8ba0d61d ("kernel.h: Retain constant expression output for
max()/min()") rewrote our min/max macros to be very clever, but in the
meantime resurrected a variable name shadow issue that we had had
previously fixed in commit 589a9785ee ("min/max: remove sparse
warnings when they're nested").

That commit talks about the sparse warnings that this shadowing causes,
which we ignored as just a minor annoyance.  But it turns out that the
sparse warning is the least of our problems.  We actually have a real
bug due to the shadowing through the interaction with "min_not_zero()",
which ends up doing

   min(__x, __y)

internally, and then the new declaration of "__x" and "__y" as new
variables in __cmp_once() results in a complete mess of an expression,
and "min_not_zero()" doesn't work at all.

For some odd reason, this only ever caused (reported) problems on s390,
even though it is a generic issue and most of the (obviously successful)
testing of the problematic commit had happened on other architectures.

Quoting Sebastian Ott:
 "What happened is that the bio build by the partition detection code
  was attempted to be split by the block layer because the block queue
  had a max_sector setting of 0. blk_queue_max_hw_sectors uses
  min_not_zero."

So re-introduce the use of __UNIQUE_ID() to make sure that the min/max
macros do not have these kinds of clashes.

[ That said, __UNIQUE_ID() itself has several issues that make it less
  than wonderful.

  In particular, the "uniqueness" has a fallback on the line number,
  which means that it's not actually unique in more complex cases if you
  don't build with gcc or clang (which have working unique counters that
  aren't tied to line numbers).

  That historical broken fallback also means that we have that pointless
  "prefix" argument that doesn't actually make much sense _except_ for
  the known-broken case. Oh well. ]

Fixes: 3c8ba0d61d ("kernel.h: Retain constant expression output for max()/min()")
Reported-and-tested-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-09 10:34:07 -07:00