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

..

alpha

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

arc

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

arm

Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2017-12-10 08:26:59 -08:00

arm64

Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2017-12-10 08:26:59 -08:00

blackfin

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

c6x

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

cris

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

frv

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

h8300

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

hexagon

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

ia64

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

m32r

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

m68k

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-12-08 13:32:44 -08:00

metag

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

microblaze

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

mips

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-12-08 13:32:44 -08:00

mn10300

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

nios2

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

openrisc

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

parisc

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

powerpc

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-12-08 13:32:44 -08:00

riscv

RISC-V: Remove unused CONFIG_HVC_RISCV_SBI code

2017-12-11 07:51:09 -08:00

s390

kernel: make groups_sort calling a responsibility group_info allocators

2017-12-14 16:00:49 -08:00

score

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

sh

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

sparc

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

tile

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

um

Merge tag 'for-linus-20171120' of git://git.infradead.org/linux-mtd

2017-11-22 20:46:06 -10:00

unicore32

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

x86

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2017-12-11 16:32:45 -08:00

xtensa

bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type

2017-12-05 15:02:40 +01:00

.gitignore

…

Kconfig

bpf: Revert bpf_overrid_function() helper changes.

2017-11-11 18:24:55 +09:00