From: "Richard W.M. Jones" <rjones@redhat.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] i586 TCG: boot hangs intermittently on cryptomgr_test at doublefault_fn
Date: Tue, 2 Jun 2009 18:58:33 +0100 [thread overview]
Message-ID: <20090602175833.GA26882@amd.home.annexia.org> (raw)
I have this bug[1] apparently in qemu which I'm trying to track down:
----------------------------------------------------------------------
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16ac)
apm: overridden by ACPI.
audit: initializing netlink socket (disabled)
type=2000 audit(1243614582.002:1): initialized
HugeTLB registered 4 MB page size, pre-allocated 0 pages
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
msgmni has been set to 680
BUG: unable to handle kernel NULL pointer dereference at 00000014
IP: [<c041ddd9>] doublefault_fn+0xd/0x108
*pde = 00000000
Oops: 0000 [#1] SMP
last sysfs file:
Modules linked in:
Pid: 26, comm: cryptomgr_test Not tainted (2.6.30-0.91.rc7.git1.fc12.i586 #1)
EIP: 0060:[<c041ddd9>] EFLAGS: f8d8409e CPU: 0
EIP is at doublefault_fn+0xd/0x108
EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
ESI: 00000000 EDI: 00000000 EBP: c0be1e2c ESP: c0be1e18
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process cryptomgr_test (pid: 26, ti=c0be0000 task=d5418000 task.ti=d5b88000)
Stack:
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Call Trace:
Code: c2 eb 00 ba b8 dd 41 c0 ff e2 8d 15 e4 61 99 c0 8b 0a 51 8d 15 e0 61 99
c0 8b 0a 51 c3 90 55 89 e5 56 53 83 ec 0c 0f 1f 44 00 00 <65> a1 14 00 00 00 89
45 f4 31 c0 8d 45 ee 66 c7 45 ee 00 00 c7
EIP: [<c041ddd9>] doublefault_fn+0xd/0x108 SS:ESP 0068:c0be1e18
CR2: 0000000000000014
---[ end trace 6d450e935ee1897c ]---
cryptomgr_test used greatest stack depth: 7348 bytes left
----------------------------------------------------------------------
It seems to be: i386 architecture only, software emulation, and
intermittent, quite hard to reproduce reliably.
So my questions are: Has anyone seen anything like this before?
Is there anything I can set or enable to track down which instructions
are failing?
Rich.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=503236
--
Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones
virt-top is 'top' for virtual machines. Tiny program with many
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next reply other threads:[~2009-06-02 17:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-02 17:58 Richard W.M. Jones [this message]
2009-06-02 18:15 ` [Qemu-devel] i586 TCG: boot hangs intermittently on cryptomgr_test at doublefault_fn Paul Brook
2009-06-02 18:59 ` malc
2009-06-02 19:10 ` Avi Kivity
2009-06-02 19:08 ` Avi Kivity
2009-06-02 20:43 ` [Qemu-devel] " Jan Kiszka
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