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authorMiklos Szeredi <miklos@szeredi.hu>2005-07-07 20:57:22 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-07 21:23:51 -0400
commit202322e6f7cd12e82b5ff0fa92bbdf517fcf0947 (patch)
tree82c1f7b4b97d5b31654157a8f427a5c8d546504f /include/linux/namespace.h
parent6f50142e4b092a469920a0008fc23121c3d99f2f (diff)
[PATCH] namespace.c: fix mnt_namespace clearing
This patch clears mnt_namespace on unmount. Not clearing mnt_namespace has two effects: 1) It is possible to attach a new mount to a detached mount, because check_mnt() returns true. This means, that when no other references to the detached mount remain, it still can't be freed. This causes a resource leak, and possibly un-removable modules. 2) If mnt_namespace is dereferenced (only in mark_mounts_for_expiry()) after the namspace has been freed, it can cause an Oops, memory corruption, etc. 1) has been tested before and after the patch, 2) is only speculation. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/namespace.h')
0 files changed, 0 insertions, 0 deletions