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devpts: Make devpts_kill_sb safe if fsi is NULL 

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2015-12-22 17:39:18 -06:00
parent ec0a9ba6f2
commit 0d126a7ff7
1 changed files with 2 additions and 1 deletions
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3
fs/devpts/inode.c
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@ -458,7 +458,8 @@ static void devpts_kill_sb(struct super_block *sb)
{
struct pts_fs_info *fsi = DEVPTS_SB(sb);
ida_destroy(&fsi->allocated_ptys);
if (fsi)
ida_destroy(&fsi->allocated_ptys);
kfree(fsi);
kill_litter_super(sb);
}