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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2013-03-23 00:36:44 +0400
committerJ. Bruce Fields <bfields@redhat.com>2013-04-03 15:32:32 -0400
commita7823c797b4d29727499f0a75ddf3ed07af8ad0a (patch)
treed5a4d2cb12ef87e91296fac1f4765394ff9a147f
parentff7c4b3693cbc7e938f49ed89e2f649a33f03ed1 (diff)
SUNRPC/cache: add module_put() on error path in cache_open()
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 <khoroshilov@ispras.ru> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
-rw-r--r--net/sunrpc/cache.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 25d58e76..1d3c514 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -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);