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authorAl Viro <viro@zeniv.linux.org.uk>2018-04-03 00:13:17 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2018-04-15 23:49:12 -0400
commit659038428cb43a66e3eff71e2c845c9de3611a98 (patch)
tree6aa80ece2be05799ad7033085f5cc7936c53a43b
parentc66b23c2840446a82c389e4cb1a12eb2a71fa2e4 (diff)
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orangefs_kill_sb(): deal with allocation failures
orangefs_fill_sb() might've failed to allocate ORANGEFS_SB(s); don't oops in that case. Cc: stable@kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/orangefs/super.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c
index 3ae5fdba0225..10796d3fe27d 100644
--- a/fs/orangefs/super.c
+++ b/fs/orangefs/super.c
@@ -579,6 +579,11 @@ void orangefs_kill_sb(struct super_block *sb)
/* provided sb cleanup */
kill_anon_super(sb);
+ if (!ORANGEFS_SB(sb)) {
+ mutex_lock(&orangefs_request_mutex);
+ mutex_unlock(&orangefs_request_mutex);
+ return;
+ }
/*
* issue the unmount to userspace to tell it to remove the
* dynamic mount info it has for this superblock