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authorSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>2008-10-29 14:01:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-30 11:38:46 -0700
commitd25141a818383b3c3b09f065698c544a7a0ec6e7 (patch)
treefb2f868b42ccdde710ddf426e1c90f8ffcc83368 /kernel/extable.c
parente74481e23283fb080d4591c258de20785cc3b6c3 (diff)
'kill sig -1' must only apply to caller's namespace
Currently "kill <sig> -1" kills processes in all namespaces and breaks the isolation of namespaces. Earlier attempt to fix this was discussed at: http://lkml.org/lkml/2008/7/23/148 As suggested by Oleg Nesterov in that thread, use "task_pid_vnr() > 1" check since task_pid_vnr() returns 0 if process is outside the caller's namespace. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Tested-by: Daniel Hokka Zakrisson <daniel@hozac.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/extable.c')
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