Re: [PATCH] ext4: Fix a double free of sbi->s_group_info in ext4_mb_init_backend
From: Ted Ts'o <tytso@mit.edu>
Date: 2011-07-11 22:44:12
On Mon, Jul 11, 2011 at 11:26:56PM +0800, Tao Ma wrote:
From: Tao Ma <redacted> If we meet with an error in ext4_mb_add_groupinfo, we kfree sbi->s_group_info[group >> EXT4_DESC_PER_BLOCK_BITS(sb)], but fail to reset it to NULL. So the caller ext4_mb_init_backend will try to kfree it again and causes a double free. So fix it by resetting it to NULL. Some typo in comments of mballoc.c are also changed. Signed-off-by: Tao Ma <redacted>
Added to the ext4 tree, thanks. - Ted