https://bugzilla.kernel.org/show_bug.cgi?id=60788 Bug ID: 60788 Summary: xfstest generic/068 failure - kernel BUG at fs/buffer.c:3005! Product: File System Version: 2.5 Kernel Version: 3.11-rc6 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: ext4 Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx Reporter: enwlinux@xxxxxxxxx Regression: No Created attachment 107298 --> https://bugzilla.kernel.org/attachment.cgi?id=107298&action=edit kernel trace with timestamps and system name trimmed Xfstest generic/068 fails roughly 5% of the time when run on a 3.11-rc6 x86-64 KVM guest against a test filesystem mounted with the data=journal option. The failure is actually a test hang rather than an error exit. When the hang occurs, a kernel failure in reported in the log: "kernel BUG at fs/buffer.c:3005!" (full trace attached). Recovering from the bug requires rebooting and restarting the guest. It also occurs on a Pandaboard ES running 3.11-rc6 at about the same frequency of occurrence. Some evidence suggests that running additional tests prior to generic/068 increases the occurrence rate. Running generic/062 prior to 068 increased the failure rate to 15% in set of 20 tests on the same KVM guest, for example. Also, my sense is that 068 fails more frequently than 15% of the time when running the entire xfstests-bld data_journal test series from the top in normal regression, but I've not yet tried to quantify this. The same bug has been seen on both x86_64 and ARM in previous releases and release candidates at least as far back as 3.8. Jan Kara may have made the most recent comments related to this and another similar bug: http://www.spinics.net/lists/linux-ext4/msg36858.html (also, see bug id 60786). Test system hardware configuration: KVM x86_64 virtual machine (2 cores, 1 GB memory) on physical four core x86_64 Virtual system and test disk raw images located on two physical 147 GB SAS disks Test file systems located in three 5.66 GB virtual disks Test system software configuration: Mainline kernel 3.11-rc6 on Ubuntu 12.10 x86-64 base e2fsprogs, master branch 93061ea0f4d9f94579d09480f17dd47169c82081 xfsprogs, master branch 1a78b0840afcfbe01c12e6af04659388d62efeea xfstests, master branch 6fe0ad6fafd76ef3d5b01639f22b747f4a317b63 xfstests-bld, master branch 723c23e1b2756b911dbb50bbd08c0afa5b836e3b -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
