I am no longer able to reproduce after applying Ted's patch. I was able to run my unit test 20 times w/o failing on upstream + patch on d05-6. I then switched over to the Ubuntu kernel + patch, and it has now passed 64 times (and counting).
I then looked to see why Ike is still observing a failure. My theory is that the filesystem Ike was testing was already corrupted by a previous *unpatched* run, so the kernel is finding pre-existing corruption. Evidence follows. The last record of "sudo mkfs.ext4" running in /var/log/auth.log: Jul 5 06:43:39 d05-4 sudo: ubuntu : TTY=ttyAMA0 ; PWD=/home/ubuntu ; USER=root ; COMMAND=/sbin/mkfs.ext4 /dev/sda2 While the kernel w/ the fix wasn't built until Jul 9: [ 0.000000] Linux version 4.15.0-25-generic (root@recht) (gcc version 7.3.0 (Ubuntu/Linaro 7.3.0-16ubuntu3)) #27+ext4msg61578.1 SMP Mon Jul 9 08:28:49 UTC 2018 (Ubuntu 4.1 5.0-25.27+ext4msg61578.1-generic 4.15.18) The first time /dev/sda2 was mounted after booting this kernel, it reported known errors: Jul 9 05:43:33 d05-4 kernel: [ 138.522140] EXT4-fs (sda2): warning: mounting fs with errors, running e2fsck is recommended Looking at the conserver log (logs all console activity on this system), it looks like the test used did not reformat the disk between iterations: root@d05-4:~# ^G^G^G^G^G^G^G^G^G^G^G^Gwhile true; do sudo /usr/lib/plainbox-provider-checkbox/bin/disk _st^Mtress_ng sda --base-time 240 --really-run; done Finally, I manually ran mkfs.ext4 on /dev/sda2. Afterwards, both my unit test (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780137/comments/5) and the full disk_stress_ng cert test Ike was running passed without error. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1780137 Title: [Regression] EXT4-fs error (device sda1): ext4_validate_inode_bitmap:99: comm stress-ng: Corrupt inode bitmap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780137/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
