linux-ext4 - [Bug 72181] ext4_mb_generate_buddy:free block calculation seems to overflow

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Message-ID: <bug-72181-13602-peq0OKLQhX@https.bugzilla.kernel.org/>
Date:	Mon, 17 Mar 2014 02:08:42 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 72181] ext4_mb_generate_buddy:free block calculation seems to
 overflow

https://bugzilla.kernel.org/show_bug.cgi?id=72181

--- Comment #2 from WeiZhang <zweiustc@...il.com> ---
(In reply to WeiZhang from comment #1)
> usually, we just get a wrong number of "free" from bitmap while bitmap is
> corrupted. but it should not larger than "max = EXT4_CLUSTERS_PER_GROUP(sb)"
> right?

i add some printk and confirmed there is some wrong in ext4_grp_locked_error.
the "free" is in the right range. Seems that the bitmap is still corrupted with
the patch(ext4: fix the free blocks calculation for ext3 file systems w/
uninit_bg). I will look into it right now. Thx

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