[Xen-devel] Unexpected crashes/reboots of domU on debian with xen 4.6 kernel 4.1.13

[Maarten Coenaerts <maarten@xxxxxxx>]

Hi,

I'm having a problem with an Xen 4.6.0 install on debian jessie 8.2 with 
kernel 4.1.13.
Different domU's has been unexpectedly rebooted several times.
DomU's runs debian squeeze and wheezy with 4.1.13 kernel.
Then yesterday a domU (debian squeeze) crashed with following trace in 
xl dmesg:
(XEN) domain_crash_sync called from entry.S: fault at ffff82d08022a01e 
create_bounce_frame+0x66/0x13a
(XEN) Domain 12 (vcpu#7) crashed on cpu#6:
(XEN) ----[ Xen-4.6.0  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    6
(XEN) RIP:    e033:[<ffffffff81041530>]
(XEN) RFLAGS: 0000000000010206   EM: 0   CONTEXT: pv guest (d12v7)
(XEN) rax: 00000000000000ca   rbx: 000000000000006e   rcx: ffffffff81041530
(XEN) rdx: 0000000000000001   rsi: 0000000000000081   rdi: 00007fc1749baa28
(XEN) rbp: 00007fc1734f36b0   rsp: 00007fc17fe2ddf5   r8: 00007fc1749baa28
(XEN) r9:  0000000000000646   r10: 00007fc1734f3670   r11: 0000000000000206
(XEN) r12: 00000000000001f4   r13: 00007fc1749baa00   r14: 00007fc1749baa28
(XEN) r15: 00007fc1749baa50   cr0: 0000000080050033   cr4: 00000000001526e0
(XEN) cr3: 0000000066760000   cr2: 00007fc17fe2dded
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e02b   cs: e033
(XEN) Guest stack trace from rsp=00007fc17fe2ddf5:
(XEN)    0000841f0fc35e5a 4955415441000000 ec8348f58949fc89 
c748f631e7894810
(XEN)    48d0ffff600000c0 0003e8bf0824448b 007d8b49e7f74800 
243c2b4808758b49
(XEN)    c681480a79c62948 48cfff483b9aca00 243c89483678ff85 
148b410824748948
(XEN)    e289491474d28524 00cab8e7894cf631 75003f83050f0000 
4110c48348c0310b
(XEN)    92f88348c35c415d eb0000006eb88f75 90909090909090ea 
314d525241909090
(XEN)    6400000080f681d2 8900000048253423 a980000000ca81c2 
d0392b7540000000
(XEN)    097517b10ff00674 8b050f000000cab8 148b64da75c08507 
00ca81000002d025
(XEN)    7517b10ff0800000 666666c35a415ac6 0000841f0f2e6666 
20d4213d83000000
(XEN)    8949514175740000 81ffffffffb941d2 34236400000080f6 
09ce810000004825
(XEN)    40000000a9000001 0000ca81c2893c75 0ff00d74c2398000 
000000c1c74817b1
(XEN)    000000cab80b7500 c085078bc189050f 02d025148b641775 
80000000ca810000
(XEN)    5941037517b10ff0 f983057492f983c3 ebd8f7c889b075ea 
9aca00087a8148ed
(XEN)    41000000d4830f3b 5655415441514150 49fc894920ec8348 
481024448948d589
(XEN)    00c0c748f631e789 448b48d0ffff6000 48000003e8bf0824 
8b49007d8b49e7f7
(XEN)    2948243c2b480875 ca00c681480a79c6 ff8548cfff483b9a 
89480000008c880f
(XEN)    480824748948243c ca81d0891024548b 000000a980000000 
f00f74c239537540
(XEN)    c1c7482414b10f41 8949267500000000 80f6812024748be2 
4825342364000000
(XEN)    cab8e7894c000000 c18948050f000000 2975c08524048b41 
000002d025148b64
(XEN)    41f080000000ca81 834813752414b10f 59415c415d4128c4 
00000016b8c35841
(XEN)    ff30850f92f983c3 eb0000006eb8ffff 90909090909090dd 
25348b645f909090
Today I had another reboot of the domU (debian squeeze) and now I have a 
kernel panic in  the console log.
[79376.951876] general protection fault: febc [#1] SMP
[79376.951885] Modules linked in: rpcsec_gss_krb5 xt_tcpudp xt_limit 
xt_state xt_multiport iptable_filter iptable_nat nf_conntrack_ipv4 
nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle ip_tables 
x_tables x86_pkg_temp_thermal thermal_sys coretemp evdev snd_pcm 
snd_timer crct10dif_pclmul crc32_pclmul snd soundcore pcspkr r8168(O) 
crc32c_intel
[79376.951910] CPU: 4 PID: 898 Comm: ntpd Tainted: G           O 4.1.13 #1
[79376.951914] task: ffff8802e88dee80 ti: ffff8802eebf8000 task.ti: 
ffff8802eebf8000
[79376.951919] RIP: e030:[<ffffffff810471df>] [<ffffffff810471df>] 
setup_sigcontext+0xde/0x13f
[79376.951927] RSP: e02b:ffff8802eebfbe30  EFLAGS: 00010246
[79376.951930] RAX: 0000000000000246 RBX: 00007ffddc51a878 RCX: 
0000000000000000
[79376.951933] RDX: ffff8802eebfbf58 RSI: 00007ffddc51aa40 RDI: 
00007ffddc51a8a8
[79376.951937] RBP: ffff8802e88df4b0 R08: 0000000000000000 R09: 
ffff88000389df00
[79376.951940] R10: ffff88000389df00 R11: 0000000000000005 R12: 
0000000000000000
[79376.951943] R13: 000000000000000e R14: 00007ffddc51aa40 R15: 
ffff8802eebfbf58
[79376.951949] FS:  00007f064a398700(0000) GS:ffff8802f0d00000(0000) 
knlGS:ffff8802f0d00000
[79376.951953] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[79376.951957] CR2: ffffffffff600400 CR3: 00000002ec1aa000 CR4: 
0000000000042660
[79376.951960] Stack:
[79376.951962]  ffffffff81047572 00000003950ffebe 0000000000000000 
0000000000000000
[79376.951967]  0000000000000340 0000000000000000 000000000042c640 
0000000004000000
[79376.951973]  00007f0649009230 0000000000000000 000000000000000e 
000000000001fffe
[79376.951979] Call Trace:
[79376.951982]  [<ffffffff81047572>] ? do_signal+0x332/0x53e
[79376.951987]  [<ffffffff81040f75>] ? xen_clocksource_read+0x12/0x14
[79376.951990]  [<ffffffff8104778b>] ? do_notify_resume+0xd/0x48
[79376.951995]  [<ffffffff8157687c>] ? int_signal+0x12/0x17
[79376.951998] Code: 00 48 8b 80 d8 05 00 00 48 89 87 98 00 00 00 48 8b 
82 80 00 00 00 48 89 87 80 00 00 00 48 8b 82 90 00 00 00 48 89 87 88 00 
00 00 <48> cb 82 88 00 00 00 66 89 87 90 00 00 00 66 c7 87 92 00 00 00
[79376.952027] RIP  [<ffffffff810471df>] setup_sigcontext+0xde/0x13f
[79376.952031]  RSP <ffff8802eebfbe30>
[79376.952043] ---[ end trace 7994404a264eb3f4 ]---
[79376.952492] general protection fault: 0000 [#2] SMP
[79376.952498] Modules linked in: rpcsec_gss_krb5 xt_tcpudp xt_limit 
xt_state xt_multiport iptable_filter iptable_nat nf_conntrack_ipv4 
nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle ip_tables 
x_tables x86_pkg_temp_thermal thermal_sys coretemp evdev snd_pcm 
snd_timer crct10dif_pclmul crc32_pclmul snd soundcore pcspkr r8168(O) 
crc32c_intel
[79376.952521] CPU: 5 PID: 1 Comm: init Tainted: G      D    O 4.1.13 #1
[79376.952525] task: ffff8802eed60000 ti: ffff8802eed68000 task.ti: 
ffff8802eed68000
[79376.952530] RIP: e030:[<ffffffff810471df>] [<ffffffff810471df>] 
setup_sigcontext+0xde/0x13f
[79376.952537] RSP: e02b:ffff8802eed6be30  EFLAGS: 00010246
[79376.952540] RAX: 0000000000000246 RBX: 00007ffc1375c278 RCX: 
0000000000000000
[79376.952543] RDX: ffff8802eed6bf58 RSI: 00007ffc1375c440 RDI: 
00007ffc1375c2a8
[79376.952546] RBP: ffff8802eed60630 R08: 0000000000000000 R09: 
ffff8802f0d59ea0
[79376.952550] R10: ffff8802edf47a00 R11: 0000000000000005 R12: 
0000000000000000
[79376.952553] R13: 0000000000000011 R14: 00007ffc1375c440 R15: 
ffff8802eed6bf58
[79376.952558] FS:  00007fce2a6267a0(0000) GS:ffff8802f0d40000(0000) 
knlGS:ffff8802f0d40000
[79376.952563] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[79376.952566] CR2: ffffffffff600400 CR3: 00000002ea106000 CR4: 
0000000000042660
[79376.952570] Stack:
[79376.952572]  ffffffff81047572 0000000000000001 0000000000000000 
0000000000000000
[79376.952577]  0000000000000000 00000000fffffdfe 0000000000402a80 
0000000014000000
[79376.952583]  00007fce29f04230 0000000000000000 0000000000000011 
ffffffff00040002
[79376.952589] Call Trace:
[79376.952592]  [<ffffffff81047572>] ? do_signal+0x332/0x53e
[79376.952597]  [<ffffffff8118d8be>] ? poll_select_copy_remaining+0xe3/0xf9
[79376.952601]  [<ffffffff8104778b>] ? do_notify_resume+0xd/0x48
[79376.952605]  [<ffffffff8157687c>] ? int_signal+0x12/0x17
[79376.952608] Code: 00 48 8b 80 d8 05 00 00 48 89 87 98 00 00 00 48 8b 
82 80 00 00 00 48 89 87 80 00 00 00 48 8b 82 90 00 00 00 48 89 87 88 00 
00 00 <48> cb 82 88 00 00 00 66 89 87 90 00 00 00 66 c7 87 92 00 00 00
[79376.952638] RIP  [<ffffffff810471df>] setup_sigcontext+0xde/0x13f
[79376.952642]  RSP <ffff8802eed6be30>
[79376.952646] ---[ end trace 7994404a264eb3f5 ]---
[79376.952784] Kernel panic - not syncing: Attempted to kill init! 
exitcode=0x0000000b
[79376.952784]
[79376.952798] Kernel Offset: disabled

Got another one in a different domU (debian wheezy):
[235243.886902] BUG: unable to handle kernel paging request at 
fffffeff81041470
[235243.886902] IP: [<fffffeff81041470>] 0xfffffeff81041470
[235243.886902] PGD 0
[235243.886902] Oops: 0010 [#1] SMP
[235243.886902] Modules linked in: iptable_mangle iptable_nat 
nf_nat_ipv4 nf_nat xt_tcpudp xt_limit nf_conntrack_ipv4 nf_defrag_ipv4 
xt_state nf_conntrack xt_multiport iptable_filter ip_tables x_tables 
evdev x86_pkg_temp_thermal thermal_sys snd_pcm coretemp snd_timer snd 
crct10dif_pclmul crc32_pclmul soundcore pcspkr r8168(O) crc32c_intel
[235243.886902] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G O    4.1.13 #1
[235243.886902] task: ffffffff81a12540 ti: ffffffff81a00000 task.ti: 
ffffffff81a00000
[235243.886902] RIP: e030:[<fffffeff81041470>] [<fffffeff81041470>] 
0xfffffeff81041470
[235243.886902] RSP: e02b:ffff88003f7d17a0  EFLAGS: 00010046
[235243.886902] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 
0000000000100000
[235243.886902] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 
ffff88003e006100
[235243.886902] RBP: ffffffff81a12540 R08: 0000000000030001 R09: 
0000000000000000
[235243.886902] R10: 0000000000007ff0 R11: 0000000000000246 R12: 
ffff88003f7d1818
[235243.886902] R13: 0000000000000010 R14: 000000000000000b R15: 
0000000000030001
[235243.886902] FS:  0000000000000000(0000) GS:ffff88003f800000(0000) 
knlGS:ffff8807fc080000
[235243.886902] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[235243.886902] CR2: fffffeff81041470 CR3: 00000000024b4000 CR4: 
0000000000042660
[235243.886902] Stack:
[235243.886902]  ffffffff8104a1f6 fffffeff81041470 ffffffff8107b6cd 
0000000000000000
[235243.886902]  0000000000000068 00006b746e697270 0000000000000000 
0000000000000000
[235243.886902]  0000000000000001 ffffffff81a12540 ffff88003f7d1938 
0000000000000010
[235243.886902] Call Trace:
[235243.886902]  <UNK>
[235243.886902] Code:  Bad RIP value.
[235243.886902] RIP  [<fffffeff81041470>] 0xfffffeff81041470
[235243.886902]  RSP <ffff88003f7d17a0>
[235243.886902] CR2: fffffeff81041470
[235243.886902] ---[ end trace 57ed17d295686db9 ]---
[235243.886902] Kernel panic - not syncing: Attempted to kill the idle task!
[235243.886902] Kernel Offset: disabled

Not sure if the panics are related or not. Someone in xen-user suggested 
I post to xen-devel about my problem.
Can anybody shed some light on the problems I'm having?

KR,
Maarten

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