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[v2] NFSv4: Fix a memory leak bug

Message ID 1566357681-4586-1-git-send-email-wenwen@cs.uga.edu (mailing list archive)
State New, archived
Headers show
Series [v2] NFSv4: Fix a memory leak bug | expand

Commit Message

Wenwen Wang Aug. 21, 2019, 3:21 a.m. UTC
In nfs4_try_migration(), if nfs4_begin_drain_session() fails, the
previously allocated 'page' and 'locations' are not deallocated, leading to
memory leaks. To fix this issue, go to the 'out' label to free 'page' and
'locations' before returning the error.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
---
 fs/nfs/nfs4state.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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Patch

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index cad4e06..e916aba 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -2095,8 +2095,10 @@  static int nfs4_try_migration(struct nfs_server *server, const struct cred *cred
 	}
 
 	status = nfs4_begin_drain_session(clp);
-	if (status != 0)
-		return status;
+	if (status != 0) {
+		result = status;
+		goto out;
+	}
 
 	status = nfs4_replace_transport(server, locations);
 	if (status != 0) {