devpts: Make devpts_kill_sb safe if fsi is NULL

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

devpts: Make devpts_kill_sb safe if fsi is NULL
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
0d126a7f · Eric W. Biederman · ec0a9ba6 · 0d126a7f
Commit 0d126a7f authored Dec 22, 2015 by Eric W. Biederman
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fs/devpts/inode.c fs/devpts/inode.c +2 -1

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--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -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);
 }