[Xen-devel] Kernel BUG at arch/x86_64/mm/../../i386/mm/hypervisor.c:197

[Christophe Saout <christophe@xxxxxxxx>]

Hello list,

I just got this ominous bug on my machine, that has already been seen
several times:

http://lists.xensource.com/archives/html/xen-devel/2006-01/msg00180.html

The machine is very similar, it's a machine with two dual-core opterons,
running one of the latest xen-3.0.3-unstable (20060926 hypervisor, and a
vanilla 2.6.18 + xen patch from Fedora from 20060915).

This machine was running since yesterday and I just did some compiling.

1 20:53:48 waff ----------- [cut here ] --------- [please bite here ] ---------
1 20:53:48 waff Kernel BUG at arch/x86_64/mm/../../i386/mm/hypervisor.c:197
1 20:53:48 waff invalid opcode: 0000 [1] SMP 
1 20:53:48 waff CPU 3 
1 20:53:48 waff Modules linked in: xt_NOTRACK iptable_raw iptable_mangle 
xt_MARK ipt_MASQUERADE iptable_nat xt_physdev ipt
1 20:53:48 waff Pid: 31297, comm: ebuild.sh Not tainted 2.6.18-cs1-xen0 #1
1 20:53:48 waff RIP: e030:[<ffffffff80285c75>]  [<ffffffff80285c75>] 
xen_pgd_pin+0x55/0x70
1 20:53:48 waff RSP: e02b:ffff8800210e9d88  EFLAGS: 00010282
1 20:53:48 waff RAX: 00000000ffffffea RBX: ffff88003ea1e1c0 RCX: 
0000000000034d18
1 20:53:48 waff RDX: 0000000000000000 RSI: 0000000000000001 RDI: 
ffff8800210e9d88
1 20:53:48 waff RBP: ffff8800210e9da8 R08: ffff88001c05cff8 R09: 
ffff88001c05cff8
1 20:53:48 waff R10: 0000000000007ff0 R11: ffff88000ecbcff8 R12: 
0000000000000000
1 20:53:48 waff R13: ffff8800000ca840 R14: 0000000001200011 R15: 
ffff8800000ca840
1 20:53:48 waff FS:  00002b3887c7ce30(0000) GS:ffffffff80773180(0000) 
knlGS:0000000000000000
1 20:53:48 waff CS:  e033 DS: 0000 ES: 0000
1 20:53:48 waff Process ebuild.sh (pid: 31297, threadinfo ffff8800210e8000, 
task ffff88001f331080)
1 20:53:48 waff Stack:  0000000000000003  0000000000098718  0000000001200011  
ffff88000ecbcff8 
1 20:53:48 waff ffff8800210e9dc8  ffffffff80285573  0000000000000000  
ffff88000c1263d8 
1 20:53:48 waff ffff8800210e9dd8  ffffffff80285622 
1 20:53:48 waff Call Trace:
1 20:53:48 waff [<ffffffff80285573>] mm_pin+0x183/0x220
1 20:53:48 waff [<ffffffff80285622>] _arch_dup_mmap+0x12/0x20
1 20:53:48 waff [<ffffffff802220b0>] copy_process+0xc50/0x1870
1 20:53:48 waff [<ffffffff8023680f>] do_fork+0xef/0x210
1 20:53:48 waff [<ffffffff8029c652>] recalc_sigpending+0x12/0x20
1 20:53:48 waff [<ffffffff8022005d>] sigprocmask+0xfd/0x110
1 20:53:48 waff [<ffffffff80269662>] system_call+0x86/0x8b
1 20:53:48 waff [<ffffffff802767c3>] sys_clone+0x23/0x30
1 20:53:48 waff [<ffffffff80269a71>] ptregscall_common+0x3d/0x64
1 20:53:48 waff 
1 20:53:48 waff 
1 20:53:48 waff Code: 0f 0b 68 b8 76 5a 80 c2 c5 00 90 c9 c3 00 00 00 00 00 00 
00 
1 20:53:48 waff RIP  [<ffffffff80285c75>] xen_pgd_pin+0x55/0x70
1 20:53:48 waff RSP <ffff8800210e9d88>

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