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Message-ID: <20180726171617.zwtrc7e36ldndita@localhost.localdomain>
Date: Thu, 26 Jul 2018 13:16:17 -0400
From: Eric Whitney <enwlinux@...il.com>
To: linux-ext4@...r.kernel.org
Cc: tytso@....edu
Subject: xfstests-bld generic/231 failure on 4.18-rc4 and later
As mentioned in today's ext4 concall, I've been seeing generic/231 failures
when running kvm-xfstests on recent 4.18 kernels, beginning with rc4 and
continuing through rc5 and rc6. To get the failure, it's necessary to
run generic/230 and 231 in sequence. Running generic/231 alone and
repeatedly does not reproduce the failure for me.
The test failure occurs because e2fsck reports problems at the end of 231:
e2fsck 1.44-WIP (06-Sep-2017)
Pass 1: Checking inodes, blocks, and sizes
Inode 19 passes checks, but checksum does not match inode. Fix? no
Inode 20 passes checks, but checksum does not match inode. Fix? no
Inode 21 passes checks, but checksum does not match inode. Fix? no
Inode 22 passes checks, but checksum does not match inode. Fix? no
Inode 23 passes checks, but checksum does not match inode. Fix? no
The failure bisects to a patch in 4.18-rc4:
(8844618d8aa7) ext4: only look at the bg_flags field if it is valid
I can no longer reproduce the failure after reverting this patch in a clean
rc4 build.
Thanks,
Eric
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