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authorAl Viro <viro@zeniv.linux.org.uk>2018-04-03 00:13:17 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-24 09:34:17 +0200
commite2210c5414a8e05e14c5864180ec215dec343828 (patch)
treedc415f4c1a0e1c4a38d24a751272eae26a122375
parentf3ba3eaaee8bc8c07d58d2a6050f9892ba01c306 (diff)
orangefs_kill_sb(): deal with allocation failures
commit 659038428cb43a66e3eff71e2c845c9de3611a98 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-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 629d8c917fa6..6e35ef6521b4 100644
--- a/fs/orangefs/super.c
+++ b/fs/orangefs/super.c
@@ -559,6 +559,11 @@ 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