Le 28/02/2011 12:39, Michael S. Tsirkin a écrit :
On Mon, Feb 28, 2011 at 11:40:43AM +0100, Jean-Philippe Menil wrote:
Le 28/02/2011 11:11, Michael S. Tsirkin a écrit :
On Mon, Feb 28, 2011 at 09:56:46AM +0100, Jean-Philippe Menil wrote:
Le 27/02/2011 18:00, Michael S. Tsirkin a écrit :
On Fri, Feb 25, 2011 at 10:07:22AM +0100, Jean-Philippe Menil wrote:
Hi,
Each time i try tou use vhost_net, i'm facing a kernel bug.
I do a "modprobe vhost_net", and start guest whith vhost=on.
Following is a trace with a kernel 2.6.37, but i had the same
problem with 2.6.36 (cf https://lkml.org/lkml/2010/11/30/29).
2.6.36 had a theorectical race that could explain this,
but it should be ok in 2.6.37.
The bug only occurs whith vhost_net charged, so i don't know if this
is a bug in kvm module code or in the vhost_net code.
It could be a bug in eventfd which is the interface
used by both kvm and vhost_net.
Just for fun, you can try 3.6.38 - eventfd code has been changed
a lot in 2.6.38 and if it does not trigger there
it's a hint that irqfd is the reason.
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.243100] BUG: unable to handle kernel paging request at
0000000000002458
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.243250] IP: [<ffffffffa041aa8a>] kvm_set_irq+0x2a/0x130 [kvm]
Could you run markup_oops/ ksymoops on this please?
As far as I can see kvm_set_irq can only get a wrong
kvm pointer. Unless there's some general memory corruption,
I'd guess
You can also try comparing the irqfd->kvm pointer in
kvm_irqfd_assign irqfd_wakeup and kvm_set_irq in
virt/kvm/eventfd.c.
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.243378] PGD 45d363067 PUD 45e77a067 PMD 0
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.243556] Oops: 0000 [#1] SMP
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.243692] last sysfs file:
/sys/devices/pci0000:00/0000:00:0d.0/0000:05:00.0/0000:06:00.0/irq
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [ 685.243777] CPU 0
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.243820] Modules linked in: vhost_net macvtap macvlan tun
powernow_k8 mperf cpufreq_userspace cpufreq_stats cpufreq_powersave
cpufreq_ondemand fre
q_table cpufreq_conservative fuse xt_physdev ip6t_LOG
ip6table_filter ip6_tables ipt_LOG xt_multiport xt_limit xt_tcpudp
xt_state iptable_filter ip_tables x_tables nf_conntrack_tftp
nf_conntrack_ftp nf_connt
rack_ipv4 nf_defrag_ipv4 8021q bridge stp ext2 mbcache
dm_round_robin dm_multipath nf_conntrack_ipv6 nf_conntrack
nf_defrag_ipv6 kvm_amd kvm ipv6 snd_pcm snd_timer snd soundcore
snd_page_alloc tpm_tis tpm ps
mouse dcdbas tpm_bios processor i2c_nforce2 shpchp pcspkr ghes
serio_raw joydev evdev pci_hotplug i2c_core hed button thermal_sys
xfs exportfs dm_mod sg sr_mod cdrom usbhid hid usb_storage ses
sd_mod enclosu
re megaraid_sas ohci_hcd lpfc scsi_transport_fc scsi_tgt bnx2
scsi_mod ehci_hcd [last unloaded: scsi_wait_scan]
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [ 685.246123]
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] Pid: 10, comm: kworker/0:1 Not tainted
2.6.37-dsiun-110105 #17 0K543T/PowerEdge M605
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] RIP: 0010:[<ffffffffa041aa8a>] [<ffffffffa041aa8a>]
kvm_set_irq+0x2a/0x130 [kvm]
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] RSP: 0018:ffff88045fc89d30 EFLAGS: 00010246
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] RAX: 0000000000000000 RBX: 000000000000001a RCX:
0000000000000001
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] RBP: 0000000000000000 R08: 0000000000000001 R09:
ffff880856a91e48
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] R10: 0000000000000000 R11: 00000000ffffffff R12:
0000000000000000
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] R13: 0000000000000001 R14: 0000000000000000 R15:
0000000000000000
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] FS: 00007f617986c710(0000) GS:ffff88007f800000(0000)
knlGS:0000000000000000
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] CR2: 0000000000002458 CR3: 000000045d197000 CR4:
00000000000006f0
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] Process kworker/0:1 (pid: 10, threadinfo
ffff88045fc88000, task ffff88085fc53c30)
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [ 685.246123] Stack:
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] ffff88045fc89fd8 00000000000119c0 ffff88045fc88010
ffff88085fc53ee8
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] ffff88045fc89fd8 ffff88085fc53ee0 ffff88085fc53c30
00000000000119c0
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] 00000000000119c0 ffffffff8137f7ce ffff88007f80df40
00000000ffffffff
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] Call Trace:
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff8137f7ce>] ? common_interrupt+0xe/0x13
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffffa041bc30>] ? irqfd_inject+0x0/0x50 [kvm]
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffffa041bc57>] ? irqfd_inject+0x27/0x50 [kvm]
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffffa041bc30>] ? irqfd_inject+0x0/0x50 [kvm]
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff8106b6f2>] ? process_one_work+0x112/0x460
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff8106be25>] ? worker_thread+0x145/0x410
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff8103a3d0>] ? __wake_up_common+0x50/0x80
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff8106bce0>] ? worker_thread+0x0/0x410
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff8106bce0>] ? worker_thread+0x0/0x410
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff8106f786>] ? kthread+0x96/0xa0
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff81003ce4>] ? kernel_thread_helper+0x4/0x10
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff8106f6f0>] ? kthread+0x0/0xa0
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] [<ffffffff81003ce0>] ? kernel_thread_helper+0x0/0x10
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] Code: ff 41 57 41 89 f7 41 56 41 55 41 89 cd 41 54 49 89
fc 55 53 89 d3 48 81 ec 98 00 00 00 8b 15 c6 79 03 00 85 d2 0f 85 c4
00 00 00<4
9> 8b 84 24 58 24 00 00 3b 98 28 01 00 00 73 5e 89 db 48 8b 84
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] RIP [<ffffffffa041aa8a>] kvm_set_irq+0x2a/0x130 [kvm]
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] RSP<ffff88045fc89d30>
Feb 23 13:56:19 ayrshire.u06.univ-nantes.prive kernel: [
685.246123] CR2: 0000000000002458
If someone can help me, on how to solve this.
Regards.
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Hi,
thanks for your response.
This is what markup_oops.pl return me:
"No matching code found"
Well, let's try to understand what's there.
Do objdumop -ldS kvm.ko
look for<kvm_set_irq>
and paste the content from start of that function
to offset 0x2a and a bit beyond.
You can also upload your kvm.ko somewhere, I'll try to take a look.
So this is not a vhost_net bug, or my oops is incomplete and
markup_oops can't find the good vma offset.
I will try to compare the pointers you indicate me, even it could be
a little difficult for me.
Hmm you know how to add printk to code and rebuild, right?
Maybe i will try a 2.6.38, will wait a response from the kvm team.
Regards.
--
Jean-Philippe Menil - Pôle réseau Service IRTS
DSI Université de Nantes
jean-philippe.menil@xxxxxxxxxxxxxx
Tel : 02.53.48.49.27 - Fax : 02.53.48.49.09
So, here is the result for the objdump against the kvm.ko (the
kvm_set_irq part) :
Can you try building with -g and adding -l and -S to objdump
please? I'd rather make the tool do the legwork than
do it manually.
0000000000006a60<kvm_set_irq>:
kvm_set_irq():
6a60: 41 57 push %r15
6a62: 41 89 f7 mov %esi,%r15d
6a65: 41 56 push %r14
6a67: 41 55 push %r13
6a69: 41 89 cd mov %ecx,%r13d
6a6c: 41 54 push %r12
6a6e: 49 89 fc mov %rdi,%r12
6a71: 55 push %rbp
6a72: 53 push %rbx
6a73: 89 d3 mov %edx,%ebx
6a75: 48 81 ec 98 00 00 00 sub $0x98,%rsp
6a7c: 8b 15 00 00 00 00 mov 0x0(%rip),%edx
# 6a82<kvm_set_irq+0x22>
6a82: 85 d2 test %edx,%edx
6a84: 0f 85 c4 00 00 00 jne 6b4e<kvm_set_irq+0xee>
6a8a: 49 8b 84 24 58 24 00 mov 0x2458(%r12),%rax
OK, 0x6a8a is the offset.
After you build with -g, try
addr2line kvm.ko 0x6a8a
and see which line this points to.
6a91: 00
6a92: 3b 98 28 01 00 00 cmp 0x128(%rax),%ebx
6a98: 73 5e jae 6af8<kvm_set_irq+0x98>
6a9a: 89 db mov %ebx,%ebx
6a9c: 48 8b 84 d8 30 01 00 mov 0x130(%rax,%rbx,8),%rax
6aa3: 00
6aa4: 48 85 c0 test %rax,%rax
6aa7: 74 4f je 6af8<kvm_set_irq+0x98>
6aa9: 48 89 e2 mov %rsp,%rdx
6aac: 31 db xor %ebx,%ebx
6aae: 48 8b 08 mov (%rax),%rcx
6ab1: 83 c3 01 add $0x1,%ebx
6ab4: 0f 18 09 prefetcht0 (%rcx)
6ab7: 48 8b 48 e0 mov -0x20(%rax),%rcx
6abb: 48 89 0a mov %rcx,(%rdx)
6abe: 48 8b 48 e8 mov -0x18(%rax),%rcx
6ac2: 48 89 4a 08 mov %rcx,0x8(%rdx)
6ac6: 48 8b 48 f0 mov -0x10(%rax),%rcx
6aca: 48 89 4a 10 mov %rcx,0x10(%rdx)
6ace: 48 8b 48 f8 mov -0x8(%rax),%rcx
6ad2: 48 89 4a 18 mov %rcx,0x18(%rdx)
6ad6: 48 8b 08 mov (%rax),%rcx
6ad9: 48 89 4a 20 mov %rcx,0x20(%rdx)
6add: 48 8b 48 08 mov 0x8(%rax),%rcx
6ae1: 48 89 4a 28 mov %rcx,0x28(%rdx)
6ae5: 48 8b 00 mov (%rax),%rax
6ae8: 48 83 c2 30 add $0x30,%rdx
6aec: 48 85 c0 test %rax,%rax
6aef: 75 bd jne 6aae<kvm_set_irq+0x4e>
6af1: eb 07 jmp 6afa<kvm_set_irq+0x9a>
6af3: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
6af8: 31 db xor %ebx,%ebx
6afa: bd ff ff ff ff mov $0xffffffff,%ebp
6aff: 49 89 e6 mov %rsp,%r14
6b02: 85 db test %ebx,%ebx
6b04: 74 34 je 6b3a<kvm_set_irq+0xda>
6b06: 83 eb 01 sub $0x1,%ebx
6b09: 44 89 e9 mov %r13d,%ecx
6b0c: 44 89 fa mov %r15d,%edx
6b0f: 48 63 c3 movslq %ebx,%rax
6b12: 4c 89 e6 mov %r12,%rsi
6b15: 48 8d 04 40 lea (%rax,%rax,2),%rax
6b19: 48 c1 e0 04 shl $0x4,%rax
6b1d: 49 8d 3c 06 lea (%r14,%rax,1),%rdi
6b21: ff 54 04 08 callq *0x8(%rsp,%rax,1)
6b25: 85 c0 test %eax,%eax
6b27: 78 d9 js 6b02<kvm_set_irq+0xa2>
6b29: 85 ed test %ebp,%ebp
6b2b: ba 00 00 00 00 mov $0x0,%edx
6b30: 0f 48 ea cmovs %edx,%ebp
6b33: 85 db test %ebx,%ebx
6b35: 8d 2c 28 lea (%rax,%rbp,1),%ebp
6b38: 75 cc jne 6b06<kvm_set_irq+0xa6>
6b3a: 48 81 c4 98 00 00 00 add $0x98,%rsp
6b41: 89 e8 mov %ebp,%eax
6b43: 5b pop %rbx
6b44: 5d pop %rbp
6b45: 41 5c pop %r12
6b47: 41 5d pop %r13
6b49: 41 5e pop %r14
6b4b: 41 5f pop %r15
6b4d: c3 retq
6b4e: 48 8b 2d 00 00 00 00 mov 0x0(%rip),%rbp
# 6b55<kvm_set_irq+0xf5>
6b55: 48 85 ed test %rbp,%rbp
6b58: 0f 84 2c ff ff ff je 6a8a<kvm_set_irq+0x2a>
6b5e: 48 8b 45 00 mov 0x0(%rbp),%rax
6b62: 48 8b 7d 08 mov 0x8(%rbp),%rdi
6b66: 48 83 c5 10 add $0x10,%rbp
6b6a: 44 89 f9 mov %r15d,%ecx
6b6d: 44 89 ea mov %r13d,%edx
6b70: 89 de mov %ebx,%esi
6b72: ff d0 callq *%rax
6b74: 48 8b 45 00 mov 0x0(%rbp),%rax
6b78: 48 85 c0 test %rax,%rax
6b7b: 75 e5 jne 6b62<kvm_set_irq+0x102>
6b7d: e9 08 ff ff ff jmpq 6a8a<kvm_set_irq+0x2a>
6b82: 66 66 66 66 66 2e 0f nopw %cs:0x0(%rax,%rax,1)
6b89: 1f 84 00 00 00 00 00
I admit that this analysis is too complicated for me.
I, effectively, can rebuild a kernel with more printk, and program a reboot.
The kvm.ko is available through the following address:
http://filex.univ-nantes.fr/get?k=k1jKhQghdcHLz12Z50H
Regards.
This has no debug data. Can you rebuild with -g please?
BTW if you want to rerun and get more reliable backtrace,
tyr enabling frame pointers (do you know how to?). But this will change code
so backtrace will no longer be val we will need
a new one.
--
Jean-Philippe Menil - Pôle réseau Service IRTS
DSI Université de Nantes
jean-philippe.menil@xxxxxxxxxxxxxx
Tel : 02.53.48.49.27 - Fax : 02.53.48.49.09
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Host reboot with his new kernel (2.6.37.2), i modprobe vhost_net, start
three kvm guests.
Host hang in a half an hour.
This time i get a general protection fault:
[ 2380.381225] general protection fault: 0000 [#1] SMP
[ 2380.381261] last sysfs file:
/sys/devices/system/cpu/cpu11/cache/index2/shared_cpu_map
[ 2380.381309] CPU 0
[ 2380.381316] Modules linked in: vhost_net macvtap macvlan tun veth
powernow_k8 mperf cpufreq_userspace cpufreq_stats cpufreq_powersave
cpufreq_ondemand freq_table cpufreq_conservative fuse xt_physdev
ip6t_LOG ip6table_filter ip6_tables ipt_LOG xt_multiport xt_limit
xt_tcpudp xt_state iptable_filter ip_tables x_tables nf_conntrack_tftp
nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 8021q bridge stp ext2
mbcache dm_round_robin dm_multipath nf_conntrack_ipv6 nf_conntrack
nf_defrag_ipv6 kvm_amd kvm ipv6 snd_pcm snd_timer snd soundcore
snd_page_alloc shpchp i2c_nforce2 pci_hotplug psmouse tpm_tis joydev
pcspkr tpm evdev i2c_core dcdbas tpm_bios serio_raw processor ghes
button hed thermal_sys xfs exportfs dm_mod sg sr_mod cdrom usbhid hid
usb_storage sd_mod ses enclosure megaraid_sas lpfc ohci_hcd
scsi_transport_fc scsi_tgt scsi_mod bnx2 ehci_hcd [last unloaded:
scsi_wait_scan]
Feb 28 15:28:09 ayrshire.u06.univ-nantes.prive kernel: Feb 28 15:28:09
ayrshire.u06.univ-nantes.prive kernel: [ 2380.381839] Pid: 10, comm:
kworker/0:1 Not tainted 2.6.37.2-dsiun-110105+ #2 Dell Inc. PowerEdge
M605/0K543T
[ 2380.381902] RIP: 0010:[<ffffffffa037e877>] [<ffffffffa037e877>]
kvm_set_irq+0x37/0x140 [kvm]
[ 2380.381973] RSP: 0018:ffff88045fc85d00 EFLAGS: 00010246
[ 2380.382002] RAX: 000200740000029c RBX: 000000000000001a RCX:
0000000000000001
[ 2380.382035] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ffff88045dbb7440
[ 2380.382068] RBP: ffff88045fc85dd0 R08: ffff88045fc84000 R09:
000000000000000c
[ 2380.382101] R10: 0000000000000036 R11: 00000000ffffffff R12:
ffff88045dbb7440
[ 2380.382134] R13: ffff88045dbb7440 R14: ffffffffa037faa0 R15:
0000000000000001
[ 2380.382168] FS: 00007f0c97165720(0000) GS:ffff88007f800000(0000)
knlGS:0000000000000000
[ 2380.382216] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 2380.382246] CR2: 00007f13bcc80b40 CR3: 000000045e96c000 CR4:
00000000000006f0
[ 2380.382279] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2380.382312] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 2380.382347] Process kworker/0:1 (pid: 10, threadinfo
ffff88045fc84000, task ffff88085fc53c30)
[ 2380.382395] Stack:
[ 2380.382416] 00000000000119c0 00000000000119c0 00000000000119c0
ffff88085fc53c30
[ 2380.382466] ffff88085fc53ee0 ffff88045fc85fd8 ffff88085fc53ee8
ffff88045fc84010
[ 2380.382516] 00000000000119c0 ffff88045fc85fd8 00000000000119c0
00000000000119c0
[ 2380.382566] Call Trace:
[ 2380.382600] [<ffffffff813818ce>] ? common_interrupt+0xe/0x13
[ 2380.382648] [<ffffffffa037faa0>] ? irqfd_inject+0x0/0x50 [kvm]
[ 2380.382694] [<ffffffffa037faca>] irqfd_inject+0x2a/0x50 [kvm]
[ 2380.382729] [<ffffffff8106b7bb>] process_one_work+0x11b/0x450
[ 2380.382762] [<ffffffff8106bf37>] worker_thread+0x157/0x410
[ 2380.382796] [<ffffffff8103a569>] ? __wake_up_common+0x59/0x90
[ 2380.382828] [<ffffffff8106bde0>] ? worker_thread+0x0/0x410
[ 2380.382861] [<ffffffff8106f996>] kthread+0x96/0xa0
[ 2380.382894] [<ffffffff81003c64>] kernel_thread_helper+0x4/0x10
[ 2380.382927] [<ffffffff8106f900>] ? kthread+0x0/0xa0
[ 2380.382958] [<ffffffff81003c60>] ? kernel_thread_helper+0x0/0x10
[ 2380.382987] Code: 55 49 89 fd 41 54 53 89 d3 48 81 ec a8 00 00 00 8b
15 a6 75 03 00 89 b5 3c ff ff ff 85 d2 0f 85 d5 00 00 00 49 8b 85 58 24
00 00 <3b> 98 28 01 00 00 73 61 89 db 48 8b 84 d8 30 01 00 00 48 85 c0
[ 2380.383185] RIP [<ffffffffa037e877>] kvm_set_irq+0x37/0x140 [kvm]
[ 2380.383231] RSP <ffff88045fc85d00>
Running markup_oops.pl give me the following:
vmaoffset = 18446744072102576128 ffffffffa037e841: 48 89
e5 mov %rsp,%rbp
ffffffffa037e844: 41 57 push %r15
ffffffffa037e846: 41 89 cf mov %ecx,%r15d |
%r15 => 1 %ecx = 1
ffffffffa037e849: 41 56 push %r14 |
%r14 => ffffffffa037faa0
ffffffffa037e84b: 41 55 push %r13
ffffffffa037e84d: 49 89 fd mov %rdi,%r13 |
%edi = ffff88045dbb7440 %r13 => ffff88045dbb7440
ffffffffa037e850: 41 54 push %r12 |
%r12 => ffff88045dbb7440
ffffffffa037e852: 53 push %rbx
ffffffffa037e853: 89 d3 mov %edx,%ebx |
%ebx => 1a
ffffffffa037e855: 48 81 ec a8 00 00 00 sub $0xa8,%rsp
ffffffffa037e85c: 8b 15 00 00 00 00 mov
0x0(%rip),%edx # ffffffffa037e862 <kvm_set_irq+0x22>
ffffffffa037e862: 89 b5 3c ff ff ff mov %esi,-0xc4(%rbp)
| %esi = 0
ffffffffa037e868: 85 d2 test %edx,%edx |
%edx => 0
ffffffffa037e86a: 0f 85 d5 00 00 00 jne ffffffffa037e945
<kvm_set_irq+0x105>
ffffffffa037e870: 49 8b 85 58 24 00 00 mov 0x2458(%r13),%rax
| %eax => 200740000029c %r13 = ffff88045dbb7440
*ffffffffa037e877: 3b 98 28 01 00 00 cmp 0x128(%rax),%ebx
| %eax = 200740000029c %ebx = 1a <--- faulting instruction
ffffffffa037e87d: 73 61 jae ffffffffa037e8e0
<kvm_set_irq+0xa0>
ffffffffa037e87f: 89 db mov %ebx,%ebx
ffffffffa037e881: 48 8b 84 d8 30 01 00 mov
0x130(%rax,%rbx,8),%rax
ffffffffa037e888: 00
ffffffffa037e889: 48 85 c0 test %rax,%rax
ffffffffa037e88c: 74 52 je ffffffffa037e8e0
<kvm_set_irq+0xa0>
ffffffffa037e88e: 48 8d 95 40 ff ff ff lea -0xc0(%rbp),%rdx
ffffffffa037e895: 31 db xor %ebx,%ebx
ffffffffa037e897: 48 8b 08 mov (%rax),%rcx
ffffffffa037e89a: 83 c3 01 add $0x1,%ebx
ffffffffa037e89d: 0f 18 09 prefetcht0 (%rcx)
ffffffffa037e8a0: 48 8b 48 e0 mov -0x20(%rax),%rcx
ffffffffa037e8a4: 48 89 0a mov %rcx,(%rdx)
ffffffffa037e8a7: 48 8b 48 e8 mov -0x18(%rax),%rcx
ffffffffa037e8ab: 48 89 4a 08 mov %rcx,0x8(%rdx)
ffffffffa037e8af: 48 8b 48 f0 mov -0x10(%rax),%rcx
ffffffffa037e8b3: 48 89 4a 10 mov %rcx,0x10(%rdx)
ffffffffa037e8b7: 48 8b 48 f8 mov -0x8(%rax),%rcx
ffffffffa037e8bb: 48 89 4a 18 mov %rcx,0x18(%rdx)
ffffffffa037e8bf: 48 8b 08 mov (%rax),%rcx
I've re-run markup_oops on the first oops (2.6.37.1) (on the right
module this time, sorry for that), it give me the following:
vmaoffset = 18446744072103215104 ffffffffa041aa62: 41 89
f7 mov %esi,%r15d | %r15 => 0 %esi = 0
ffffffffa041aa65: 41 56 push %r14 |
%r14 => 0
ffffffffa041aa67: 41 55 push %r13
ffffffffa041aa69: 41 89 cd mov %ecx,%r13d |
%ecx = 1 %r13 => 1
ffffffffa041aa6c: 41 54 push %r12
ffffffffa041aa6e: 49 89 fc mov %rdi,%r12 |
%edi = 0 %r12 => 0
ffffffffa041aa71: 55 push %rbp
ffffffffa041aa72: 53 push %rbx
ffffffffa041aa73: 89 d3 mov %edx,%ebx |
%ebx => 1a
ffffffffa041aa75: 48 81 ec 98 00 00 00 sub $0x98,%rsp
ffffffffa041aa7c: 8b 15 00 00 00 00 mov
0x0(%rip),%edx # ffffffffa041aa82 <kvm_set_irq+0x22>
ffffffffa041aa82: 85 d2 test %edx,%edx |
%edx => 0
ffffffffa041aa84: 0f 85 c4 00 00 00 jne ffffffffa041ab4e
<kvm_set_irq+0xee>
*ffffffffa041aa8a: 49 8b 84 24 58 24 00 mov 0x2458(%r12),%rax
| %eax = 0 %r12 = 0 <--- faulting instruction
ffffffffa041aa91: 00
ffffffffa041aa92: 3b 98 28 01 00 00 cmp 0x128(%rax),%ebx
ffffffffa041aa98: 73 5e jae ffffffffa041aaf8
<kvm_set_irq+0x98>
ffffffffa041aa9a: 89 db mov %ebx,%ebx
ffffffffa041aa9c: 48 8b 84 d8 30 01 00 mov
0x130(%rax,%rbx,8),%rax
ffffffffa041aaa3: 00
ffffffffa041aaa4: 48 85 c0 test %rax,%rax
ffffffffa041aaa7: 74 4f je ffffffffa041aaf8
<kvm_set_irq+0x98>
ffffffffa041aaa9: 48 89 e2 mov %rsp,%rdx
ffffffffa041aaac: 31 db xor %ebx,%ebx
ffffffffa041aaae: 48 8b 08 mov (%rax),%rcx
ffffffffa041aab1: 83 c3 01 add $0x1,%ebx
ffffffffa041aab4: 0f 18 09 prefetcht0 (%rcx)
ffffffffa041aab7: 48 8b 48 e0 mov -0x20(%rax),%rcx
ffffffffa041aabb: 48 89 0a mov %rcx,(%rdx)
ffffffffa041aabe: 48 8b 48 e8 mov -0x18(%rax),%rcx
ffffffffa041aac2: 48 89 4a 08 mov %rcx,0x8(%rdx)
ffffffffa041aac6: 48 8b 48 f0 mov -0x10(%rax),%rcx
ffffffffa041aaca: 48 89 4a 10 mov %rcx,0x10(%rdx)
ffffffffa041aace: 48 8b 48 f8 mov -0x8(%rax),%rcx
It's appear that the kernel i recompiled (make-pkg) with the debug
options for kvm module, doesn't have the debug!
addr2line give me an "??:0"
I will retent with the good options.
Regards.
--
Jean-Philippe Menil - Pôle réseau Service IRTS
DSI Université de Nantes
jean-philippe.menil@xxxxxxxxxxxxxx
Tel : 02.53.48.49.27 - Fax : 02.53.48.49.09
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