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Vasily Averin cb5d960403 ipc/util.c: sysvipc_find_ipc() should increase position index 
[ Upstream commit 89163f93c6 ]

If seq_file .next function does not change position index, read after
some lseek can generate unexpected output.

https://bugzilla.kernel.org/show_bug.cgi?id=206283
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Waiman Long <longman@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: NeilBrown <neilb@suse.com>
Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/b7a20945-e315-8bb0-21e6-3875c14a8494@virtuozzo.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2020-04-29 16:33:00 +02:00
..
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ipc_sysctl.c proc/sysctl: add shared variables for range check 2019-07-18 17:08:07 -07:00
mq_sysctl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
mqueue.c ipc/mqueue: improve exception handling in do_mq_notify() 2019-09-25 17:51:41 -07:00
msg.c ipc/msg.c: consolidate all xxxctl_down() functions 2020-02-11 04:35:07 -08:00
msgutil.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 52 2019-05-24 17:36:42 +02:00
namespace.c ipc: Convert mqueue fs to fs_context 2019-02-28 03:29:29 -05:00
sem.c Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()" 2020-02-28 17:22:20 +01:00
shm.c ipc: rename old-style shmctl/semctl/msgctl syscalls 2019-01-25 17:22:50 +01:00
syscall.c ipc: rename old-style shmctl/semctl/msgctl syscalls 2019-01-25 17:22:50 +01:00
util.c ipc/util.c: sysvipc_find_ipc() should increase position index 2020-04-29 16:33:00 +02:00
util.h ipc: fix sparc64 ipc() wrapper 2019-09-07 21:42:25 +02:00