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v0.5.1
https://github.com/torvalds/linux
02 December 2023, 22:23:51 UTC
Revision 7a238fcba0629b6f2edbcd37458bae56fcf36be5 authored by Serge E. Hallyn on 29 January 2007, 21:19:40 UTC, committed by Linus Torvalds on 30 January 2007, 16:26:44 UTC 
[PATCH] namespaces: fix exit race by splitting exit
 
Fix exit race by splitting the nsproxy putting into two pieces.  First
piece reduces the nsproxy refcount.  If we dropped the last reference, then
it puts the mnt_ns, and returns the nsproxy as a hint to the caller.  Else
it returns NULL.  The second piece of exiting task namespaces sets
tsk->nsproxy to NULL, and drops the references to other namespaces and
frees the nsproxy only if an nsproxy was passed in.

A little awkward and should probably be reworked, but hopefully it fixes
the NFS oops.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Daniel Hokka Zakrisson <daniel@hozac.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent c0d4d57
History
Tip revision: 7a238fcba0629b6f2edbcd37458bae56fcf36be5 authored by Serge E. Hallyn on 29 January 2007, 21:19:40 UTC
[PATCH] namespaces: fix exit race by splitting exit
Tip revision: 7a238fc
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