[PATCH v3] afs: Fix memory leak in afs_put_sysnames()

[Zhihao Cheng]

Fix afs_put_sysnames() to actually free the specified afs_sysnames
object after its reference count has been decreased to zero and
its contents have been released.

Signed-off-by: Zhihao Cheng <chengzhihao1@xxxxxxxxxx>
Cc: <Stable@xxxxxxxxxxxxxxx> # v4.17+
Fixes: 6f8880d8e681557 ("afs: Implement @sys substitution handling")
---
 fs/afs/proc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/afs/proc.c b/fs/afs/proc.c
index 468e1713bce1..6f34c84a0fd0 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -563,6 +563,7 @@ void afs_put_sysnames(struct afs_sysnames *sysnames)
 			if (sysnames->subs[i] != afs_init_sysname &&
 			    sysnames->subs[i] != sysnames->blank)
 				kfree(sysnames->subs[i]);
+		kfree(sysnames);
 	}
 }
 
-- 
2.25.4