Hi Dave,

On Thu, Oct 06, 2022 at 08:35:43AM +1100, Dave Chinner wrote:
> On Wed, Oct 05, 2022 at 09:45:12PM +0800, kernel test robot wrote:
> > 
> > Greeting,
> > 
> > FYI, we noticed the following commit (built with gcc-11):
> > 
> > commit: a1df10d42ba99c946f6a574d4d31951bc0a57e33 ("xfs: fix exception caused by unexpected illegal bestcount in leaf dir")
> > url: https://github.com/intel-lab-lkp/linux/commits/UPDATE-20220929-162751/Guo-Xuenan/xfs-fix-uaf-when-leaf-dir-bestcount-not-match-with-dir-data-blocks/20220831-195920
> > 
> > in testcase: xfstests
> > version: xfstests-x86_64-5a5e419-1_20220927
> > with following parameters:
> > 
> > 	disk: 4HDD
> > 	fs: xfs
> > 	test: generic-group-15
> > 
> > test-description: xfstests is a regression test suite for xfs and other files ystems.
> > test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git
> > 
> > 
> > on test machine: 4 threads 1 sockets Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz (Ivy Bridge) with 8G memory
> > 
> > caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
> 
> THe attached dmesg ends at:
> 
> [...]
> [  102.727610][  T315] generic/309       IPMI BMC is not supported on this machine, skip bmc-watchdog setup!
> [  102.727630][  T315] 
> [  103.884498][ T7407] XFS (sda1): EXPERIMENTAL online scrub feature in use. Use at your own risk!
> [  103.993962][ T7431] XFS (sda1): Unmounting Filesystem
> [  104.193659][ T7580] XFS (sda1): Mounting V5 Filesystem
> [  104.221178][ T7580] XFS (sda1): Ending clean mount
> [  104.223821][ T7580] xfs filesystem being mounted at /fs/sda1 supports timestamps until 2038 (0x7fffffff)
> [  104.285615][  T315]  2s
> [  104.285629][  T315] 
> [  104.339232][ T1469] run fstests generic/310 at 2022-10-01 13:36:36
> (END)
> 
> The start of the failed test. Do you have the logs from generic/310
> so we might have some idea what corruption/shutdown event occurred
> during that test run?

sorry for that. I attached dmesg for another run.

> 
> -Dave.
> -- 
> Dave Chinner
> david(a)fromorbit.com