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xen-devel
[Xen-devel] Re: [xen-unstable test] 2885: regressions - FAIL
Ian Jackson writes ("[xen-unstable test] 2885: regressions - FAIL"):
> test-amd64-xcpkern-i386-xl-multivcpu 13 guest-localmigrate.2
> fail REGR. vs. 2856
I don't think this is a real regression; it looks more like a lost
race bug to me. The logs contain a kernel BUG from the soft lockup
detector (below); the stack trace is of xl which is trying to call
mlock(). This is with the XCP 2.6.27 kernel.
Full logs for this specific test are here:
http://www.chiark.greenend.org.uk/~xensrcts/logs/2885/test-amd64-xcpkern-i386-xl-multivcpu/info.html
Ian.
Dec 1 07:46:41 BUG: soft lockup - CPU#5 stuck for 61s! [xl:23360]
Dec 1 07:46:41 Modules linked in: iptable_filter ip_tables x_tables ipv6
bridge stp llc(N) rtc]
Dec 1 07:46:41 Supported: No, Unsupported modules are loaded
Dec 1 07:46:41
Dec 1 07:46:41 Pid: 23360, comm: xl Tainted: G (2.6.27.45-0.1.1 #1)
Dec 1 07:46:41 EIP: 0061:[<c0101485>] EFLAGS: 00000282 CPU: 5
Dec 1 07:46:41 EIP is at 0xc0101485
Dec 1 07:46:41 EAX: 00000024 EBX: 09df4004 ECX: b7734f48 EDX: 00000001
Dec 1 07:46:41 ESI: 00000000 EDI: 0000014d EBP: d23bbf28 ESP: d23bbd50
Dec 1 07:46:41 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0069
Dec 1 07:46:41 CR0: 8005003b CR2: b77223d5 CR3: 1713f000 CR4: 00002660
Dec 1 07:46:41 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
Dec 1 07:46:41 DR6: ffff0ff0 DR7: 00000400
Dec 1 07:46:41 [<c02a5791>] ? privcmd_ioctl+0x621/0xc20
Dec 1 07:46:41 [<e116b659>] ? do_get_write_access+0x2d9/0x4c0 [jbd]
Dec 1 07:46:41 [<c011f120>] ? __wake_up+0x40/0x50
Dec 1 07:46:41 [<e116ad74>] ? journal_stop+0x154/0x230 [jbd]
Dec 1 07:46:41 [<e1215ee7>] ? __ext3_journal_stop+0x27/0x50 [ext3]
Dec 1 07:46:41 [<c0113808>] ? do_page_fault+0x388/0xec0
Dec 1 07:46:41 [<c01329e3>] ? capable+0x13/0x30
Dec 1 07:46:41 [<c019e93a>] ? d_move_locked+0x17a/0x230
Dec 1 07:46:41 [<c0193edb>] ? vfs_rename+0x36b/0x4f0
Dec 1 07:46:41 [<c016dc94>] ? follow_page+0x284/0x3a0
Dec 1 07:46:41 [<c017007e>] ? get_user_pages+0x14e/0x450
Dec 1 07:46:41 [<c02a5170>] ? privcmd_ioctl+0x0/0xc20
Dec 1 07:46:41 [<c01ca2f4>] proc_reg_unlocked_ioctl+0x64/0xf0
Dec 1 07:46:41 [<c01ca290>] ? proc_reg_unlocked_ioctl+0x0/0xf0
Dec 1 07:46:41 [<c0197f98>] vfs_ioctl+0x28/0x80
Dec 1 07:46:41 [<c019804e>] do_vfs_ioctl+0x5e/0x2e0
Dec 1 07:46:41 [<c01749dd>] ? do_mlock+0xad/0xf0
Dec 1 07:46:41 [<c0198333>] sys_ioctl+0x63/0x70
Dec 1 07:46:41 [<c0105366>] syscall_call+0x7/0xb
Dec 1 07:46:41 [<c0360000>] ? init_transmeta+0x82/0x202
Dec 1 07:46:41 =======================
Dec 1 07:47:46 BUG: soft lockup - CPU#5 stuck for 61s! [xl:23360]
Dec 1 07:47:46 Modules linked in: iptable_filter ip_tables x_tables ipv6
bridge stp llc(N) rtc]
Dec 1 07:47:46 Supported: No, Unsupported modules are loaded
Dec 1 07:47:46
etc.
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