4.9-stable review patch. If anyone has any objections, please let me know.
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From: Al Viro viro@zeniv.linux.org.uk
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
--- fs/orangefs/super.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/fs/orangefs/super.c +++ b/fs/orangefs/super.c @@ -559,6 +559,11 @@ void orangefs_kill_sb(struct super_block /* 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