ext4: fix NULL pointer dereference in print_daily_error_info()

Fix NULL pointer dereference in print_daily_error_info, when called on unmounted fs (EXT4_SB(sb) returns NULL), by removing error reporting timer in ext4_put_super. Google-Bug-Id: 3017663 Signed-off-by: Sergey Senozhatsky <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]>
josf · Oct 28, 2010 · a1c6c56 · a1c6c56
1 parent 53fdcf9
commit a1c6c56
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
@@ -719,6 +719,7 @@ static void ext4_put_super(struct super_block *sb)
 			ext4_abort(sb, "Couldn't clean up the journal");
 	}
 
+	del_timer(&sbi->s_err_report);
 	ext4_release_system_zone(sb);
 	ext4_mb_release(sb);
 	ext4_ext_release(sb);