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78e7b15e17ac175e7eed9e21c6f92d03d3b0a6fa
android_kernel_xiaomi_sm8450/arch/powerpc/kernel
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Radu Rendec 78e7b15e17 powerpc/msi: Fix NULL pointer access in teardown code 
The arch_teardown_msi_irqs() function assumes that controller ops
pointers were already checked in arch_setup_msi_irqs(), but this
assumption is wrong: arch_teardown_msi_irqs() can be called even when
arch_setup_msi_irqs() returns an error (-ENOSYS).

This can happen in the following scenario:
  - msi_capability_init() calls pci_msi_setup_msi_irqs()
  - pci_msi_setup_msi_irqs() returns -ENOSYS
  - msi_capability_init() notices the error and calls free_msi_irqs()
  - free_msi_irqs() calls pci_msi_teardown_msi_irqs()

This is easier to see when CONFIG_PCI_MSI_IRQ_DOMAIN is not set and
pci_msi_setup_msi_irqs() and pci_msi_teardown_msi_irqs() are just
aliases to arch_setup_msi_irqs() and arch_teardown_msi_irqs().

The call to free_msi_irqs() upon pci_msi_setup_msi_irqs() failure
seems legit, as it does additional cleanup; e.g.
list_del(&entry->list) and kfree(entry) inside free_msi_irqs() do
happen (MSI descriptors are allocated before pci_msi_setup_msi_irqs()
is called and need to be cleaned up if that fails).

Fixes: 6b2fd7efeb ("PCI/MSI/PPC: Remove arch_msi_check_device()")
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Radu Rendec <radu.rendec@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-11-29 23:49:11 +11:00
..
trace
powerpc/ftrace: Handle large kernel configs
2018-10-20 13:26:47 +11:00
vdso32
powerpc/vdso: Correct call frame information
2018-09-14 13:47:31 +10:00
vdso64
powerpc/vdso: Correct call frame information
2018-09-14 13:47:31 +10:00
.gitignore
…
align.c
powerpc/sstep: Introduce GETTYPE macro
2018-06-03 21:19:40 +10:00
asm-offsets.c
Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-10-26 14:36:21 -07:00
audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
btext.c
powerpc: don't use ioremap_prot() nor __ioremap() unless really needed.
2018-10-14 18:04:09 +11:00
cacheinfo.c
powerpc/cacheinfo: Report the correct shared_cpu_map on big-cores
2018-10-13 22:21:25 +11:00
cacheinfo.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cpu_setup_6xx.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
cpu_setup_44x.S
…
cpu_setup_fsl_booke.S
powerpc: Free up CPU feature bits on 64-bit machines
2018-03-24 00:38:51 +11:00
cpu_setup_pa6t.S
…
cpu_setup_power.S
powerpc: Turn off CPU_FTR_P9_TM_HV_ASSIST in non-hypervisor mode
2018-10-09 16:04:27 +11:00
cpu_setup_ppc970.S
…
cputable.c
Merge branch 'topic/ppc-kvm' into next
2018-07-19 14:37:57 +10:00
crash_dump.c
powerpc: don't use ioremap_prot() nor __ioremap() unless really needed.
2018-10-14 18:04:09 +11:00
crash.c
powerpc: remove kdump.h from page.h
2018-07-30 22:47:53 +10:00
dbell.c
powerpc: Introduce msgsnd/doorbell barrier primitives
2017-04-13 23:34:33 +10:00
dma-iommu.c
powerpc: rename dma_direct_ to dma_nommu_
2018-01-10 16:41:14 +01:00
dma-swiotlb.c
swiotlb: remove the overflow buffer
2018-10-19 08:43:46 +02:00
dma.c
PCI: Call dma_debug_add_bus() for pci_bus_type from PCI core
2018-07-30 15:58:01 -05:00
dt_cpu_ftrs.c
memblock: rename memblock_alloc{_nid,_try_nid} to memblock_phys_alloc*
2018-10-31 08:54:15 -07:00
eeh_cache.c
powerpc/eeh: Fix misleading comment in __eeh_addr_cache_get_device()
2018-03-27 23:44:58 +11:00
eeh_dev.c
powerpc/eeh: Cleanup list_head field names
2018-10-13 22:21:25 +11:00
eeh_driver.c
powerpc/eeh: Cleanup control flow in eeh_handle_normal_event()
2018-10-13 22:21:25 +11:00
eeh_event.c
powerpc/eeh: Manage EEH_PE_RECOVERING inside eeh_handle_normal_event()
2018-03-27 23:44:58 +11:00
eeh_pe.c
powerpc/eeh: Cleanup eeh_ops.wait_state()
2018-10-13 22:21:25 +11:00
eeh_sysfs.c
powerpc/eeh: Add EEH notify resume sysfs
2018-01-27 20:02:52 +11:00
eeh.c
powerpc/eeh: Cleanup eeh_ops.wait_state()
2018-10-13 22:21:25 +11:00
entry_32.S
powerpc/traps: merge unrecoverable_exception() and nonrecoverable_exception()
2018-10-03 15:40:01 +10:00
entry_64.S
powerpc/64: Interrupts save PPR on stack rather than thread_struct
2018-10-14 18:04:09 +11:00
epapr_hcalls.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
epapr_paravirt.c
…
exceptions-64e.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
exceptions-64s.S
powerpc/64s/hash: Convert SLB miss handlers to C
2018-10-14 18:04:09 +11:00
fadump.c
powerpc/fadump: re-register firmware-assisted dump if already registered
2018-09-19 22:08:12 +10:00
firmware.c
…
fpu.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
fsl_booke_entry_mapping.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
head_8xx.S
powerpc/8xx: Use patch_site for perf counters setup
2018-10-26 21:58:58 +11:00
head_32.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
head_40x.S
powerpc/405: move PPC405_ERR77 in asm-405.h
2018-07-30 22:48:13 +10:00
head_44x.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
head_64.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
head_booke.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
head_fsl_booke.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
hw_breakpoint.c
perf/arch/powerpc: Implement hw_breakpoint_arch_parse()
2018-06-26 09:07:55 +02:00
idle_6xx.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
idle_book3e.S
powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely
2018-07-24 22:03:14 +10:00
idle_book3s.S
Merge branch 'fixes' into next
2018-08-13 15:59:06 +10:00
idle_e500.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
idle_power4.S
powerpc/64s: Fix PACA_IRQ_HARD_DIS accounting in idle_power4()
2018-08-14 15:36:02 +10:00
idle.c
…
ima_kexec.c
powerpc: ima: send the kexec buffer to the next kernel
2016-12-20 09:48:44 -08:00
io-workarounds.c
powerpc: handover page flags with a pgprot_t parameter
2018-10-14 18:04:09 +11:00
io.c
…
iomap.c
powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo}
2018-04-05 14:59:26 +10:00
iommu.c
Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-10-26 14:36:21 -07:00
irq.c
powerpc/64: Disable irq restore warning for now
2018-08-07 21:49:24 +10:00
isa-bridge.c
powerpc: handover page flags with a pgprot_t parameter
2018-10-14 18:04:09 +11:00
jump_label.c
…
kexec_elf_64.c
kernel/kexec_file.c: allow archs to set purgatory load address
2018-04-13 17:10:28 -07:00
kgdb.c
powerpc/kgdb: add kgdb_arch_set/remove_breakpoint()
2018-10-20 13:26:47 +11:00
kprobes-ftrace.c
bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe
2018-06-21 12:33:19 +02:00
kprobes.c
bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe
2018-06-21 12:33:19 +02:00
kvm_emul.S
powerpc: move ASM_CONST and stringify_in_c() into asm-const.h
2018-07-30 22:48:16 +10:00
kvm.c
powerpc/kvm: Prefer fault_in_pages_readable function
2018-05-17 14:12:40 +10:00
l2cr_6xx.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
legacy_serial.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
machine_kexec_32.c
…
machine_kexec_64.c
powerpc/64/kexec: fix race in kexec when XIVE is shutdown
2018-05-10 23:25:08 +10:00
machine_kexec_file_64.c
powerpc/kexec: Use common error handling code in setup_new_fdt()
2018-08-10 22:12:36 +10:00
machine_kexec.c
powerpc: remove kdump.h from page.h
2018-07-30 22:47:53 +10:00
Makefile
powerpc: Add -Werror at arch/powerpc level
2018-10-19 00:56:17 +11:00
mce_power.c
powerpc/64s/hash: Do not use PPC_INVALIDATE_ERAT on CPUs before POWER9
2018-10-04 23:16:53 +10:00
mce.c
powerpc/pseries: Flush SLB contents on SLB MCE errors.
2018-09-19 21:59:22 +10:00
misc_32.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
misc_64.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
misc.S
powerpc/misc: merge reloc_offset() and add_reloc_offset()
2018-06-04 00:39:17 +10:00
module_32.c
powerpc/sparse: Fix plain integer as NULL pointer warning
2018-05-25 12:04:38 +10:00
module_64.c
powerpc/64/module: REL32 relocation range check
2018-10-20 13:26:47 +11:00
module.c
powerpc64/module elfv1: Set opd addresses after module relocation
2018-10-20 13:26:47 +11:00
module.lds
powerpc/modules: Fix alignment of .toc section in kernel modules
2017-12-11 13:03:35 +11:00
msi.c
powerpc/msi: Fix NULL pointer access in teardown code
2018-11-29 23:49:11 +11:00
nvram_64.c
powerpc/64: Fix strncpy() related build failures with GCC 8.1
2018-06-03 20:40:24 +10:00
of_platform.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
optprobes_head.S
powerpc/64: Rename soft_enabled to irq_soft_mask
2018-01-19 22:37:01 +11:00
optprobes.c
powerpc/kprobes: Do not disable interrupts for optprobes and kprobes_on_ftrace
2017-11-12 23:51:41 +11:00
paca.c
memblock: stop using implicit alignment to SMP_CACHE_BYTES
2018-10-31 08:54:16 -07:00
pci_32.c
memblock: stop using implicit alignment to SMP_CACHE_BYTES
2018-10-31 08:54:16 -07:00
pci_64.c
powerpc: handover page flags with a pgprot_t parameter
2018-10-14 18:04:09 +11:00
pci_dn.c
powerpc/pci: Separate SR-IOV Calls
2017-12-11 13:03:35 +11:00
pci_of_scan.c
Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
2018-02-06 09:59:40 -08:00
pci-common.c
Merge tag 'powerpc-4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-08-17 11:32:50 -07:00
pci-hotplug.c
powerpc/pci: Unroll two pass loop when scanning bridges
2017-12-18 23:05:52 -06:00
pmc.c
…
ppc32.h
…
ppc_save_regs.S
powerpc: move ASM_CONST and stringify_in_c() into asm-const.h
2018-07-30 22:48:16 +10:00
proc_powerpc.c
powerpc: Use octal numbers for file permissions
2018-01-22 05:48:33 +11:00
process.c
Merge tag 'powerpc-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-11-02 09:19:35 -07:00
prom_init_check.sh
powerpc: Check prom_init for disallowed sections
2018-10-19 00:56:17 +11:00
prom_init.c
powerpc/prom_init: Generate "phandle" instead of "linux, phandle"
2018-10-19 00:56:17 +11:00
prom_parse.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
prom.c
memblock: rename memblock_alloc{_nid,_try_nid} to memblock_phys_alloc*
2018-10-31 08:54:15 -07:00
ptrace32.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
ptrace.c
powerpc/64: Interrupts save PPR on stack rather than thread_struct
2018-10-14 18:04:09 +11:00
reloc_32.S
…
reloc_64.S
powerpc/asm: Convert .llong directives to .8byte
2017-08-31 14:26:47 +10:00
rtas_flash.c
powerpc: Use octal numbers for file permissions
2018-01-22 05:48:33 +11:00
rtas_pci.c
powerpc/kernel: Change retrieval of pci_dn
2017-08-31 14:26:40 +10:00
rtas-proc.c
Merge tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-06-07 10:23:33 -07:00
rtas-rtc.c
powerpc: use time64_t in read_persistent_clock
2018-06-03 20:43:33 +10:00
rtas.c
powerpc/rtas: Fix a potential race between CPU-Offline & Migration
2018-10-13 22:21:25 +11:00
rtasd.c
powerpc/pseries: PAPR persistent memory support
2018-10-19 00:56:17 +11:00
security.c
powerpc/64s: Add support for software count cache flush
2018-08-08 00:32:26 +10:00
setup_32.c
memblock: rename memblock_alloc{_nid,_try_nid} to memblock_phys_alloc*
2018-10-31 08:54:15 -07:00
setup_64.c
powerpc/64: Fix kernel stack 16-byte alignment
2018-11-15 14:48:43 +11:00
setup-common.c
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
setup.h
powerpc/tau: Synchronize function prototypes and body
2018-05-25 12:04:43 +10:00
signal_32.c
powerpc: Remove -Wattribute-alias pragmas
2018-06-25 23:21:13 +09:00
signal_64.c
powerpc: Remove -Wattribute-alias pragmas
2018-06-25 23:21:13 +09:00
signal.c
rseq: Avoid infinite recursion when delivering SIGSEGV
2018-06-22 19:04:22 +02:00
signal.h
powerpc/syscalls: signal_{32, 64} - switch to SYSCALL_DEFINE
2018-05-10 23:25:13 +10:00
smp-tbsync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
smp.c
powerpc: Fix stack protector crashes on CPU hotplug
2018-10-21 19:32:00 +11:00
stacktrace.c
powerpc/64s: Fix build failures with CONFIG_NMI_IPI=n
2018-06-19 23:03:50 +10:00
suspend.c
…
swsusp_32.S
powerpc: clean inclusions of asm/feature-fixups.h
2018-07-30 22:48:17 +10:00
swsusp_64.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/nmi.h>
2017-03-02 08:42:30 +01:00
swsusp_asm64.S
powerpc/64s/hash: Simplify slb_flush_and_rebolt()
2018-10-14 18:04:09 +11:00
swsusp_booke.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swsusp.c
powerpc/swsusp: Include suspend.h to silence sparse warnings
2017-03-20 19:02:49 +11:00
sys_ppc32.c
powerpc/syscalls: kill ppc32_select()
2018-05-10 23:25:15 +10:00
syscalls.c
powerpc: Remove -Wattribute-alias pragmas
2018-06-25 23:21:13 +09:00
sysfs.c
Merge branch 'topic/paca' into next
2018-03-31 09:09:36 +11:00
systbl_chk.c
powerpc/syscalls: Add COMPAT_SPU_NEW() macro
2018-05-10 23:25:14 +10:00
systbl_chk.sh
powerpc: Make it clearer that systbl check errors are errors
2018-05-10 23:25:16 +10:00
systbl.S
powerpc/syscalls: Add COMPAT_SPU_NEW() macro
2018-05-10 23:25:14 +10:00
tau_6xx.c
powerpc/tau: Make some function static
2018-05-25 12:04:44 +10:00
time.c
powerpc/time: no steal_time when CONFIG_PPC_SPLPAR is not selected
2018-10-20 13:26:47 +11:00
tm.S
Merge branch 'fixes' into next
2018-10-09 16:51:05 +11:00
traps.c
Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-10-26 14:36:21 -07:00
udbg_16550.c
…
udbg.c
…
uprobes.c
powerpc/uprobes: Implement arch_uretprobe_is_alive()
2017-08-24 16:19:21 +10:00
vdso.c
powerpc: remove unneeded inclusions of cpu_has_feature.h
2018-07-30 22:47:54 +10:00
vecemu.c
powerpc: Add a missing include header
2018-05-25 12:04:46 +10:00
vector.S
powerpc: move ASM_CONST and stringify_in_c() into asm-const.h
2018-07-30 22:48:16 +10:00
vmlinux.lds.S
Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-10-26 14:36:21 -07:00
watchdog.c
powerpc: NMI IPI make NMI IPIs fully sychronous
2018-07-24 22:03:14 +10:00