[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] kernel messages: alignment check: 0000 [#1] SMP
On Mon, Nov 14, 2011 at 5:59 PM, Jan Beulich <JBeulich@xxxxxxxx> wrote: >>>> On 13.11.11 at 20:00, Teck Choon Giam <giamteckchoon@xxxxxxxxx> wrote: >> derefnull[15862]: segfault at 0 ip 000000000804c2eb sp >> 00000000ffb4dfac error 4 in derefnull[8048000+57000] >> divbyzero[15899] trap divide error ip:804d0be sp:ff849e9c error:0 in >> divbyzero[8048000+56000] >> derefnull[7328]: segfault at 0 ip 0000000000407701 sp 00007fff943b1c60 >> error 4 in derefnull[400000+77000] >> divbyzero[7345] trap divide error ip:408d05 sp:7fff35784750 error:0 in >> divbyzero[400000+76000] >> derefnull[32738]: segfault at 0 ip 000000000804c2eb sp >> 00000000ffbdbebc error 4 in derefnull[8048000+57000] >> divbyzero[32755] trap divide error ip:804d0be sp:ffc0f53c error:0 in >> divbyzero[8048000+56000] >> derefnull[18732]: segfault at 0 ip 0000000000407701 sp >> 00007fffec69eb30 error 4 in derefnull[400000+77000] >> divbyzero[18841] trap divide error ip:408d05 sp:7fffed159ae0 error:0 >> in divbyzero[400000+76000] >> derefnull[10813]: segfault at 0 ip 000000000804c2eb sp >> 00000000ffc17dec error 4 in derefnull[8048000+57000] >> divbyzero[10827] trap divide error ip:804d0be sp:ffdb347c error:0 in >> divbyzero[8048000+56000] >> derefnull[27073]: segfault at 0 ip 0000000000407701 sp >> 00007fff37c6ba00 error 4 in derefnull[400000+77000] >> divbyzero[27087] trap divide error ip:408d05 sp:7fffc93d8ab0 error:0 >> in divbyzero[400000+76000] >> derefnull[11819]: segfault at 0 ip 000000000804c2eb sp >> 00000000ffbb9edc error 4 in derefnull[8048000+57000] >> divbyzero[11833] trap divide error ip:804d0be sp:ff9c5a1c error:0 in >> divbyzero[8048000+56000] >> derefnull[28080]: segfault at 0 ip 0000000000407701 sp >> 00007fff5d3045d0 error 4 in derefnull[400000+77000] >> divbyzero[28094] trap divide error ip:408d05 sp:7fff6369ca90 error:0 >> in divbyzero[400000+76000] >> derefnull[22199]: segfault at 0 ip 000000000804c2eb sp >> 00000000ffa5f64c error 4 in derefnull[8048000+57000] >> divbyzero[22213] trap divide error ip:804d0be sp:ffb2c92c error:0 in >> divbyzero[8048000+56000] >> derefnull[11755]: segfault at 0 ip 0000000000407701 sp >> 00007fffe0a4a070 error 4 in derefnull[400000+77000] >> divbyzero[11768] trap divide error ip:408d05 sp:7fffaac47410 error:0 >> in divbyzero[400000+76000] >> derefnull[3492]: segfault at 0 ip 000000000804c2eb sp 00000000ff9b0a9c >> error 4 in derefnull[8048000+57000] >> divbyzero[3506] trap divide error ip:804d0be sp:ffb387ac error:0 in >> divbyzero[8048000+56000] >> derefnull[25591]: segfault at 0 ip 0000000000407701 sp >> 00007fffc5e82060 error 4 in derefnull[400000+77000] >> divbyzero[25607] trap divide error ip:408d05 sp:7ffff3882660 error:0 >> in divbyzero[400000+76000] > > Up to here (you're certainly aware) are only indications of application > faults. Yes, I know. Trying to include what is going on in the build system prior to the kernel message. > >> alignment check: 0000 [#1] SMP >> last sysfs file: /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map >> CPU 7 >> Modules linked in: ipv6 dm_mirror dm_region_hash dm_log microcode >> rtc_core rtc_lib pcspkr ext3 jbd dm_mod [last unloaded: >> scsi_wait_scan] >> Pid: 4002, comm: sbcl Not tainted 2.6.32.47-0.choon.sl6 #1 >> RIP: e030:[<ffffffff810179ff>] [<ffffffff810179ff>] >> convert_from_fxsr+0x11f/0x13d >> RSP: e02b:ffff8800a8301cb8 EFLAGS: 00050246 > > Something in the kernel has turned on EFLAGS.AC which, in a 64-bit pv > Xen kernel, must never be done (for it is running itself in ring 3). Tracking > down where this happens may (unless someone can offer a good guess) > require sprinkling around respective WARN_ON()s or BUG_ON()s. > Ok... thanks for your kind explanation. I will see whether can I reproduce this in version 2.6.32.48. By the way, just the two related kernel messages and the pv/domU still running as per normal without any problem though. Once again, many thanks. Kindest regards, Giam Teck Choon _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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