Vasily Gorbik d1befa6582 s390/vdso: avoid 64-bit vdso mapping for compat tasks ...

vdso_fault used is_compat_task function (on s390 it tests "current"
thread_info flags) to distinguish compat tasks and map 31-bit vdso
pages. But "current" task might not correspond to mm context.

When 31-bit compat inferior is executed under gdb, gdb does
PTRACE_PEEKTEXT on vdso page, causing vdso_fault with "current" being
64-bit gdb process. So, 31-bit inferior ends up with 64-bit vdso mapped.

To avoid this problem a new compat_mm flag has been introduced into
mm context. This flag is used in vdso_fault and vdso_mremap instead
of is_compat_task.

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2018-09-20 13:20:29 +02:00

..

syscalls

kbuild: do not redirect the first prerequisite for filechk

2018-07-28 10:34:10 +09:00

vdso32

s390/vdso: revise CFI annotations of vDSO functions

2017-12-13 10:51:36 +01:00

vdso64

s390/vdso: revise CFI annotations of vDSO functions

2017-12-13 10:51:36 +01:00

.gitignore

s390: add various .gitignore files.

2012-05-16 14:42:41 +02:00

alternative.c

s390: add automatic detection of the spectre defense

2018-03-28 08:38:24 +02:00

asm-offsets.c

s390: remove gcc version check (4.3 or newer)

2018-08-21 15:57:58 +02:00

audit.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

audit.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

base.S

s390/kernel: use expoline for indirect branches

2018-05-07 21:12:39 +02:00

cache.c

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

compat_linux.c

mm: add ksys_readahead() helper; remove in-kernel calls to sys_readahead()

2018-04-02 20:16:12 +02:00

compat_linux.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

compat_ptrace.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

compat_signal.c

s390/compat: fix setup_frame32

2018-04-10 07:38:54 +02:00

compat_wrapper.c

s390: wire up rseq system call

2018-07-04 08:35:18 +02:00

cpcmd.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

crash_dump.c

s390/kdump: Remove kzalloc_panic

2018-08-16 14:49:15 +02:00

debug.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

diag.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

dis.c

s390: kernel: add SPDX identifiers to the remaining files

2017-11-24 15:37:12 +01:00

dumpstack.c

s390: kernel: add SPDX identifiers to the remaining files

2017-11-24 15:37:12 +01:00

early_nobss.c

s390/early: move functions which may not access bss section to extra file

2018-05-09 10:55:01 +02:00

early_printk.c

s390/hibernate: fix error handling when suspend cpu != resume cpu

2018-09-20 13:20:23 +02:00

early.c

s390/boot: block uncompressed vmlinux booting attempts

2018-07-02 11:25:05 +02:00

ebcdic.c

s390: ebcdic: convert comments to UTF-8

2018-08-23 18:48:43 -07:00

entry.h

s390/boot: make head.S and als.c be part of the decompressor only

2018-06-25 10:14:38 +02:00

entry.S

s390: wire up rseq system call

2018-07-04 08:35:18 +02:00

fpu.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ftrace.c

s390/ftrace: Add -mfentry and -mnop-mcount support

2018-08-15 22:39:53 -04:00

guarded_storage.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2017-11-13 11:47:01 -08:00

head64.S

s390: correct _stext offset

2018-07-02 11:24:59 +02:00

idle.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ipl.c

s390/ipl: remove reipl_method and dump_method

2018-04-10 07:39:00 +02:00

irq.c

s390: remove indirect branch from do_softirq_own_stack

2018-05-07 21:12:42 +02:00

jump_label.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kdebugfs.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kexec_elf.c

s390/kexec_file: Add ELF loader

2018-04-16 09:10:23 +02:00

kexec_image.c

s390/kexec_file: Add crash support to image loader

2018-04-16 09:10:22 +02:00

kprobes.c

bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe

2018-06-21 12:33:19 +02:00

lgr.c

s390: kernel: add SPDX identifiers to the remaining files

2017-11-24 15:37:12 +01:00

machine_kexec_file.c

s390/kexec_file: Add ELF loader

2018-04-16 09:10:23 +02:00

machine_kexec.c

s390/ipl: correct kdump reipl block checksum calculation

2018-04-10 07:39:00 +02:00

Makefile

s390/boot: make head.S and als.c be part of the decompressor only

2018-06-25 10:14:38 +02:00

mcount.S

s390/ftrace: Add -mfentry and -mnop-mcount support

2018-08-15 22:39:53 -04:00

module.c

treewide: Use array_size() in vmalloc()

2018-06-12 16:19:22 -07:00

nmi.c

headers: untangle kmemleak.h from mm.h

2018-04-05 21:36:27 -07:00

nospec-branch.c

s390: detect etoken facility

2018-07-18 08:32:17 +02:00

nospec-sysfs.c

s390: detect etoken facility

2018-07-18 08:32:17 +02:00

os_info.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

perf_cpum_cf_events.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

perf_cpum_cf.c

s390: kernel: Remove redundant license text

2017-11-24 15:37:20 +01:00

perf_cpum_sf.c

Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2018-08-21 13:47:29 -07:00

perf_event.c

s390: kernel: Remove redundant license text

2017-11-24 15:37:20 +01:00

perf_regs.c

s390/perf: fix gcc 8 array-bounds warning

2018-07-02 11:24:54 +02:00

pgm_check.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

process.c

s390: update sampling tag after task pid change

2018-04-23 07:57:17 +02:00

processor.c

s390: run user space and KVM guests with modified branch prediction

2018-02-05 14:48:50 +01:00

ptrace.c

s390/gs: add compat regset for the guarded storage broadcast control block

2017-11-28 17:33:15 +01:00

reipl.S

s390/kernel: use expoline for indirect branches

2018-05-07 21:12:39 +02:00

relocate_kernel.S

s390: assume diag308 set always works

2018-04-10 07:38:59 +02:00

runtime_instr.c

s390/runtime_instrumentation: re-add signum system call parameter

2018-02-05 07:34:50 +01:00

setup.c

s390/setup: do not reserve the decompressor code

2018-06-25 10:14:41 +02:00

signal.c

s390: wire up rseq system call

2018-07-04 08:35:18 +02:00

smp.c

headers: untangle kmemleak.h from mm.h

2018-04-05 21:36:27 -07:00

stacktrace.c

s390: kernel: add SPDX identifiers to the remaining files

2017-11-24 15:37:12 +01:00

sthyi.c

treewide: Use array_size() in vmalloc()

2018-06-12 16:19:22 -07:00

suspend.c

s390: unify linker symbols usage

2018-02-27 08:05:23 +01:00

swsusp.S

s390/hibernate: fix error handling when suspend cpu != resume cpu

2018-09-20 13:20:23 +02:00

sys_s390.c

mm: add ksys_mmap_pgoff() helper; remove in-kernel calls to sys_mmap_pgoff()

2018-04-02 20:16:11 +02:00

sysinfo.c

s390/sysinfo: add missing #ifdef CONFIG_PROC_FS

2018-07-02 12:32:20 +02:00

time.c

s390/time: Remove read_boot_clock64()

2018-07-20 00:02:41 +02:00

topology.c

s390/topology: correct topology mode proc handler

2018-07-06 08:47:53 +02:00

trace.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

traps.c

signal/s390: Use force_sig_fault where appropriate

2018-04-25 10:44:08 -05:00

uprobes.c

s390/uprobes: implement arch_uretprobe_is_alive()

2018-04-23 07:57:16 +02:00

vdso.c

s390/vdso: avoid 64-bit vdso mapping for compat tasks

2018-09-20 13:20:29 +02:00

vmlinux.lds.S

s390: move _text to an actual .text start

2018-07-02 11:25:00 +02:00

vtime.c

s390: kernel: add SPDX identifiers to the remaining files

2017-11-24 15:37:12 +01:00