linux-ext4 - [Bug 60786] xfstest generic/068 failure - kernel BUG at fs/jbd2/transaction.c:2143!

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Message-ID: <bug-60786-13602-pouXR36vtQ@https.bugzilla.kernel.org/>
Date:	Wed, 22 Jul 2015 18:32:22 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 60786] xfstest generic/068 failure - kernel BUG at
 fs/jbd2/transaction.c:2143!

https://bugzilla.kernel.org/show_bug.cgi?id=60786

Eric Whitney <enwlinux@...il.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #2 from Eric Whitney <enwlinux@...il.com> ---
A patch included in 4.2-rc1 has resolved this problem: "ext4: fix race between
truncate and __ext4_journalled_writepage()" (bdf96838aea6)

The method used to force the bug to occur in the past was to make repeated runs
of generic/068 on a test filesystem mounted with the data=journal option.  The
test system would typically hang with a few tens of runs at the most.

1000 test runs completed normally both on x86_64 and 32 bit ARM running 4.2-rc1
kernels.  Regular regression runs containing generic/068 have also completed
normally using 4.2-rc2 and -rc3 kernels on the same architectures.

Bugzilla #60788 describes the same bug.

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