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| author | Denis V. Lunev <den@openvz.org> | 2008-05-23 13:04:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-24 09:56:11 -0700 |
| commit | c4185a0e019387f5ad6e99009804965531fa1fab (patch) | |
| tree | c7d4e534808d4052373f5f7d4b78adaf57d051b9 | |
| parent | 53978d0a7a27eb036b9bf33c4caa06257a9dbed7 (diff) | |
| download | linux-3.10-c4185a0e019387f5ad6e99009804965531fa1fab.tar.gz linux-3.10-c4185a0e019387f5ad6e99009804965531fa1fab.tar.bz2 linux-3.10-c4185a0e019387f5ad6e99009804965531fa1fab.zip | |
proc: proc_get_inode() should get module only once
Any file under /proc/net opened more than once leaked the refcounter
on the module it belongs to.
The problem is that module_get is called for each file opening while
module_put is called only when /proc inode is destroyed. So, lets put
module counter if we are dealing with already initialised inode.
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=10737
Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: David Miller <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Robert Olsson <robert.olsson@its.uu.se>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Reported-by: Roland Kletzing <devzero@web.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/proc/inode.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 6f4e8dc97da..b08d1001791 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -425,7 +425,8 @@ struct inode *proc_get_inode(struct super_block *sb, unsigned int ino, } } unlock_new_inode(inode); - } + } else + module_put(de->owner); return inode; out_ino: |