[Xen-bugs] [Bug 975] New: Random kernel oops with 3.0.5-rc4 hypervisor

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=975

           Summary: Random kernel oops with 3.0.5-rc4 hypervisor
           Product: Xen
           Version: unspecified
          Platform: x86
        OS/Version: Linux-2.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: osprey@xxxxxxxxxxxxxxxxx


The problem appears totally at random when trying to execute a command (any
type of shell command, even ls). The command fails and the kernel says oops,
but the system continue to work. Really, I don't have any idea how this is
possible...


[ 2901.520000] ------------[ cut here ]------------
[ 2901.520000] kernel BUG at arch/i386/mm/hypervisor.c:62!
[ 2901.520000] invalid opcode: 0000 [#1]
[ 2901.520000] SMP 
[ 2901.520000] Modules linked in: ocfs2_dlmfs ocfs2 ocfs2_dlm ocfs2_nodemanager
configfs xt_physdev iptable_filter ip_tables x_tables af_packet nfs nfsd
exportfs lockd sunrpc sctp ipv6 raid456 xor bridge lp parport_pc parport
i2c_piix4 serial_core psmouse shpchp pci_hotplug sworks_agp serio_raw pcspkr
agpgart i2c_savage4 i2c_algo_bit i2c_core evdev ext3 jbd mbcache sd_mod sg st
ide_cd cdrom floppy sata_sil lpfc scsi_transport_fc ohci_hcd usbcore tulip
libata aic7xxx scsi_transport_spi scsi_mod serverworks generic e100 mii raid1
md_mod thermal processor fan dm_mod
[ 2901.520000] CPU:    0
[ 2901.520000] EIP:    0061:[<c011848e>]    Not tainted VLI
[ 2901.520000] EFLAGS: 00010282   (2.6.18-100-server #2) 
[ 2901.520000] EIP is at xen_l1_entry_update+0xae/0xc0
[ 2901.520000] eax: ffffffea   ebx: df457bcc   ecx: 00000001   edx: 00000000
[ 2901.520000] esi: 00007ff0   edi: 00000001   ebp: 00000000   esp: df457bc8
[ 2901.520000] ds: 007b   es: 007b   ss: 0069
[ 2901.520000] Process bash (pid: 8262, ti=df456000 task=c39ad550
task.ti=df456000)
[ 2901.520000] Stack: 00000000 fffff258 000007ff 00000000 00000000 072c2025
c0626c80 00000001 
[ 2901.520000]        f57b4258 c015cbfa 072c2025 00000000 df457c20 c014e230
df457c48 c0190134 
[ 2901.520000]        00000001 00000000 e3523754 df457ca4 072c2025 00000000
0804b000 00000000 
[ 2901.520000] Call Trace:
[ 2901.520000]  [<c015cbfa>] unmap_vmas+0x75a/0x9c0
[ 2901.530000]  [<c0162060>] exit_mmap+0x80/0x100
[ 2901.530000]  [<c011ec33>] mmput+0x33/0xa0
[ 2901.530000]  [<c017e7e7>] flush_old_exec+0x2f7/0xac0
[ 2901.530000]  [<c01a1513>] load_elf_binary+0x593/0x1af0
[ 2901.530000]  [<c017db5b>] search_binary_handler+0x8b/0x230
[ 2901.530000]  [<c019fad4>] load_script+0x214/0x250
[ 2901.530000]  [<c017db5b>] search_binary_handler+0x8b/0x230
[ 2901.530000]  [<c017fa8a>] do_execve+0x1ea/0x220
[ 2901.530000]  [<c010368f>] sys_execve+0x2f/0x90
[ 2901.530000]  [<c010517f>] syscall_call+0x7/0xb
[ 2901.530000]  [<b7ef6402>] 0xb7ef6402
[ 2901.530000] Code: e8 b8 8b fe ff 85 c0 78 22 8b 5c 24 14 8b 74 24 18 8b 7c
24 1c 8b 6c 24 20 83 c4 24 c3 39 c2 72 92 0f 0b 22 00 0c a2 30 c0 eb 88 <0f> 0b
3e 00 2f c7 30 c0 eb d4 90 8d b4 26 00 00 00 00 83 ec 24 
[ 2901.540000] EIP: [<c011848e>] xen_l1_entry_update+0xae/0xc0 SS:ESP
0069:df457bc8
[ 2901.540000]  <6>note: bash[8262] exited with preempt_count 1


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