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bdcf0a423ea1c40bbb40e7ee483b50fc8aa3d758
android_kernel_xiaomi_sm8450/arch/s390/kernel
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Thiago Rafael Becker bdcf0a423e kernel: make groups_sort calling a responsibility group_info allocators 
In testing, we found that nfsd threads may call set_groups in parallel
for the same entry cached in auth.unix.gid, racing in the call of
groups_sort, corrupting the groups for that entry and leading to
permission denials for the client.

This patch:
 - Make groups_sort globally visible.
 - Move the call to groups_sort to the modifiers of group_info
 - Remove the call to groups_sort from set_groups

Link: http://lkml.kernel.org/r/20171211151420.18655-1-thiago.becker@gmail.com
Signed-off-by: Thiago Rafael Becker <thiago.becker@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: NeilBrown <neilb@suse.com>
Acked-by: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-12-14 16:00:49 -08:00
..
vdso32
s390: kernel: Remove redundant license text
2017-11-24 15:37:20 +01:00
vdso64
s390: add a few more SPDX identifiers
2017-12-05 07:51:09 +01:00
.gitignore
s390: add various .gitignore files.
2012-05-16 14:42:41 +02:00
als.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
alternative.c
s390: add a few more SPDX identifiers
2017-12-05 07:51:09 +01:00
asm-offsets.c
s390: remove all code using the access register mode
2017-11-14 11:01:47 +01:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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
kernel: make groups_sort calling a responsibility group_info allocators
2017-12-14 16:00:49 -08:00
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
Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-11-17 11:54:55 -08:00
compat_wrapper.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
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.c
s390/debug: use pK for kernel pointers
2017-11-24 14:28:34 +01:00
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_printk.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
early.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
ebcdic.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
entry.h
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
entry.S
s390: rework __switch_to() to allow larger task_struct offsets
2017-11-20 08:51:01 +01:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: remove all code using the access register mode
2017-11-14 11:01:47 +01:00
head_kdump.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
head.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00
irq.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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
kprobes.c
s390: kernel: Remove redundant license text
2017-11-24 15:37:20 +01:00
lgr.c
s390: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00
machine_kexec.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
Makefile
s390/perf: add perf_regs support and user stack dump
2017-11-16 15:06:11 +01:00
mcount.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module.c
s390: kernel: Remove redundant license text
2017-11-24 15:37:20 +01:00
nmi.c
s390: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00
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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
perf_cpum_cf.c
s390: kernel: Remove redundant license text
2017-11-24 15:37:20 +01:00
perf_cpum_sf.c
s390: kernel: Remove redundant license text
2017-11-24 15:37:20 +01:00
perf_event.c
s390: kernel: Remove redundant license text
2017-11-24 15:37:20 +01:00
perf_regs.c
s390: add a few more SPDX identifiers
2017-12-05 07:51:09 +01:00
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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
processor.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
relocate_kernel.S
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
runtime_instr.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
setup.c
s390: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00
signal.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
s390/topology: fix compile error in file arch/s390/kernel/smp.c
2017-11-20 08:51:01 +01:00
stacktrace.c
s390: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00
sthyi.c
s390: kernel: Remove redundant license text
2017-11-24 15:37:20 +01:00
suspend.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
swsusp.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sys_s390.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
syscalls.S
s390: fix compat system call table
2017-12-07 07:49:46 +01:00
sysinfo.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
time.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-30 08:13:36 -08:00
topology.c
s390: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
uprobes.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vdso.c
s390: kernel: Remove redundant license text
2017-11-24 15:37:20 +01:00
vmlinux.lds.S
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
vtime.c
s390: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00