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orangefs_kill_sb(): deal with allocation failures

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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>
This commit is contained in:
Al Viro 2018-04-03 00:13:17 -04:00
parent c66b23c284
commit 659038428c
1 changed files with 5 additions and 0 deletions
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5
fs/orangefs/super.c
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@ -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