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SUNRPC/cache: add module_put() on error path in cache_open()

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If kmalloc() fails in cache_open(), module cd->owner left locked.
The patch adds module_put(cd->owner) on this path.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <[email protected]>
Signed-off-by: J. Bruce Fields <[email protected]>
This commit is contained in:
Alexey Khoroshilov 2013-03-23 00:36:44 +04:00 • committed by J. Bruce Fields
commit a7823c797b
1 changed files with 3 additions and 1 deletions
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4
net/sunrpc/cache.c
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@ -986,8 +986,10 @@ static int cache_open(struct inode *inode, struct file *filp,
nonseekable_open(inode, filp);
if (filp->f_mode & FMODE_READ) {
rp = kmalloc(sizeof(*rp), GFP_KERNEL);
if (!rp)
if (!rp) {
module_put(cd->owner);
return -ENOMEM;
}
rp->offset = 0;
rp->q.reader = 1;
atomic_inc(&cd->readers);