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Date:	Wed, 15 Sep 2010 09:35:18 +0300
From:	Sergey Senozhatsky <>
To:	Ted Ts'o <>,
	Sergey Senozhatsky <>,
	Andreas Dilger <>,
	Jan Kara <>, Eric Sandeen <>,
	Christoph Hellwig <>,,
Subject: [PATCH] ext4: fix NULL pointer dereference in

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.

Signed-off-by: Sergey Senozhatsky <>


diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 2614774..751997d 100644
--- 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);

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