On Thu 21-09-17 11:48:46, Eric Whitney wrote: > I'm seeing generic/232 fail from time to time when running a 4.14-rc1 kernel > on xfstest-bld's most recent kvm-xfstests test appliance. In one set of > trials, it failed in the same manner 4 out of 10 times when running the 4k test > configuration for ext4. > > The failure bisects to "quota: Do not acquire dqio_sem for dquot overwrites in > v2 format" (ab2b86360f6e). When this patch was reverted in a 4.14-rc1 kernel, > the failure did not reoccur in a series of 20 trials. Thanks for debugging this! I'd just note that the commit hash of that change is different for me - d2faa415166b2883428efa92f451774ef44373ac. > Example output from the failed test: > > QA output created by 232 > > Testing fsstress > > seed = S > Comparing user usage > 218a219 > > #3740 -- 4 0 0 1 0 0 > 245a247 > > #45 -- 0 0 0 1 0 0 > > Note: I'm also seeing a similar failure for generic/233, but the patch > containing the root cause likely comes somewhere after ab2b86360f6e. I'll post > another bug report once I locate it. I'll try to debug this further. Thanks for report! Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
