[Bug 876652] Re: Lucid (10.04) ext4 kernel panic under extreme load
** Tags added: lucid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876652 Title: Lucid (10.04) ext4 kernel panic under extreme load To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/876652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 876652] Re: Lucid (10.04) ext4 kernel panic under extreme load
Marked invalid for oem-priority project based on krafty's comments on 17/10. ** Changed in: oem-priority Status: New = Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876652 Title: Lucid (10.04) ext4 kernel panic under extreme load To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/876652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 876652] Re: Lucid (10.04) ext4 kernel panic under extreme load
Logs to follow... ** Also affects: oem-priority Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876652 Title: Lucid (10.04) ext4 kernel panic under extreme load To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/876652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 876652] Re: Lucid (10.04) ext4 kernel panic under extreme load
** Description changed: - This appears to affect the lucid kernel (2.6.32-33-server) regardless of - the backing store, either physical or virtual. + This appears to affect the lucid kernel (2.6.32-33-server) regardless of the backing store, either physical or virtual. Stacking block devices + are also not a variable e.g. LVM or multipath. To reproduce: 1) Create the following FIO test file (call it say bigfio.fio) - [global] - rw=randread - size=16g - directory=/var/lib/TESTDATA - ioengine=libaio - iodepth=4 - invalidate=1 - direct=1 + [global] + rw=randread + size=16g + directory=/var/lib/TESTDATA + ioengine=libaio + iodepth=4 + invalidate=1 + direct=1 - [bgwriter] - rw=randwrite - iodepth=32 + [bgwriter] + rw=randwrite + iodepth=32 - [queryA] - iodepth=1 - ioengine=mmap - direct=0 - thinktime=3 + [queryA] + iodepth=1 + ioengine=mmap + direct=0 + thinktime=3 - [queryB] - iodepth=1 - ioengine=mmap - direct=0 - thinktime=5 + [queryB] + iodepth=1 + ioengine=mmap + direct=0 + thinktime=5 - [bgupdater] - rw=randrw - iodepth=16 - thinktime=40 - size=128m + [bgupdater] + rw=randrw + iodepth=16 + thinktime=40 + size=128m 2) # apt-get install -y fio 3) # mkdir /var/lib/TESTDATA 4) # fio bigfio.fio + + The time to failure can vary, after an hour or two the kernel panics + here: + + KERNEL: syms/usr/lib/debug/boot/vmlinux-2.6.32-33-server + DUMPFILE: dump/VmCore + CPUS: 4 + DATE: Thu Oct 13 10:22:05 2011 + UPTIME: 01:08:14 + LOAD AVERAGE: 2.54, 2.21, 2.19 +TASKS: 151 + NODENAME: toyon + RELEASE: 2.6.32-33-server + VERSION: #72-Ubuntu SMP Fri Jul 29 21:21:55 UTC 2011 + MACHINE: x86_64 (2333 Mhz) + MEMORY: 4 GB +PANIC: [ 4092.217111] kernel BUG at /build/buildd/linux-2.6.32/mm/slub.c:2969! + PID: 314 + COMMAND: ext4-dio-unwrit + TASK: 880127fc [THREAD_INFO: 880127452000] + CPU: 0 +STATE: TASK_RUNNING (PANIC) + + crash bt + PID: 314 TASK: 880127fc CPU: 0 COMMAND: ext4-dio-unwrit + #0 [880127453bb0] die at 8101712b + #1 [880127453be0] do_trap at 8155acc4 + #2 [880127453c40] do_invalid_op at 81014ee5 + #3 [880127453ce0] invalid_op at 81013f7b + [exception RIP: kfree+300] + RIP: 81137c9c RSP: 880127453d90 RFLAGS: 00010246 + RAX: 0200 RBX: 811dd7a7 RCX: 0021 + RDX: 00952318 RSI: ea000413f5a8 RDI: 88012a463300 + RBP: 880127453db0 R8: R9: feb6f83d31fb6402 + R10: R11: R12: 88012a463300 + R13: 88011fc0d608 R14: e8c04340 R15: 880127453fd8 + ORIG_RAX: CS: 0010 SS: 0018 + #4 [880127453db8] ext4_free_io_end at 811dd7a7 + #5 [880127453dd8] ext4_end_aio_dio_work at 811dd823 + #6 [880127453e08] run_workqueue at 810814f7 + #7 [880127453e68] worker_thread at 81081673 + #8 [880127453ee8] kthread at 81085d26 + #9 [880127453f48] kernel_thread at 810141ea -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876652 Title: Lucid (10.04) ext4 kernel panic under extreme load To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/876652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 876652] Re: Lucid (10.04) ext4 kernel panic under extreme load
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: ubuntu Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876652 Title: Lucid (10.04) ext4 kernel panic under extreme load To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/876652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 876652] Re: Lucid (10.04) ext4 kernel panic under extreme load
** Attachment added: ext4-panic-13.10.11-2.6.32-33-server.0.crash.tar.gz https://bugs.launchpad.net/oem-priority/+bug/876652/+attachment/2556026/+files/ext4-panic-13.10.11-2.6.32-33-server.0.crash.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876652 Title: Lucid (10.04) ext4 kernel panic under extreme load To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/876652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 876652] Re: Lucid (10.04) ext4 kernel panic under extreme load
** Attachment added: last-log https://bugs.launchpad.net/oem-priority/+bug/876652/+attachment/2556028/+files/last-log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876652 Title: Lucid (10.04) ext4 kernel panic under extreme load To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/876652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 876652] Re: Lucid (10.04) ext4 kernel panic under extreme load
** Attachment added: bt-all https://bugs.launchpad.net/oem-priority/+bug/876652/+attachment/2556029/+files/bt-all -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876652 Title: Lucid (10.04) ext4 kernel panic under extreme load To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/876652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
