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[Xen-devel] Xen-unstable + linux 5.4.0-rc8: RIP: 0010:xennet_poll+0x35f/0xae0



L.S.,

At present one of my PVH VM's kernel crashed with the splat below
(haven't seen it before, so could be something that happens sporadically).

Any ideas ?

--
Sander



database databaselogin:  login: [184503.428811] general protection fault: 0000 
[#1] SMP NOPTI
[184503.428887] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 
5.4.0-rc8-20191123-doflr-mac80211debug+ #1
[184503.428932] RIP: 0010:xennet_poll+0x35f/0xae0
[184503.428955] Code: ba 00 01 00 00 48 8b 8d c0 00 00 00 0f b7 b4 24 92 00 00 
00 48 8b 5c 24 78 3d 00 01 00 00 0f 4e d0 89 55 28 8b 95 bc 00 00 00 <89> 74 11 
3c 48 8b 8d c0 00 00 00 8b 95 bc 00 00 00 89 44 11 38 89
[184503.429027] RSP: 0018:ffffc90000003e10 EFLAGS: 00010287
[184503.429049] RAX: 0000000000000042 RBX: ffffc90000003e88 RCX: 
fffe88800b865a80
[184503.429077] RDX: 0000000000000140 RSI: 0000000000000000 RDI: 
ffff888005504150
[184503.429107] RBP: ffff8880f0dfb800 R08: ffff888103417f00 R09: 
ffff888103010848
[184503.429137] R10: 0000000000000000 R11: ffffffff82c6e2e8 R12: 
ffff8880f0dfb800
[184503.429167] R13: 0000000000000001 R14: ffffc90000003ea0 R15: 
ffff8880055022e8
[184503.429202] FS:  0000000000000000(0000) GS:ffff888103c00000(0000) 
knlGS:0000000000000000
[184503.429231] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[184503.429255] CR2: 00007faab4774000 CR3: 0000000101652000 CR4: 
00000000000006f0
[184503.429283] Call Trace:
[184503.429296]  <IRQ>
[184503.429311]  net_rx_action+0x136/0x380
[184503.429331]  __do_softirq+0xda/0x2e0
[184503.429349]  irq_exit+0x9e/0xa0
[184503.429368]  xen_evtchn_do_upcall+0x27/0x40
[184503.429391]  xen_hvm_callback_vector+0xf/0x20
[184503.429413]  </IRQ>
[184503.429425] RIP: 0010:native_safe_halt+0xe/0x10
[184503.429445] Code: 48 8b 04 25 c0 6b 01 00 f0 80 48 02 20 48 8b 00 a8 08 75 
c4 eb 80 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 64 78 60 00 fb f4 <c3> 90 e9 
07 00 00 00 0f 00 2d 54 78 60 00 f4 c3 90 90 41 55 41 54
[184503.429514] RSP: 0018:ffffffff82c03e90 EFLAGS: 00000246 ORIG_RAX: 
ffffffffffffff0c
[184503.429544] RAX: 0001a54800000000 RBX: 0000000000000000 RCX: 
0000000000000001
[184503.429573] RDX: 00000000067e991e RSI: 0000000000000000 RDI: 
0000000000000086
[184503.429601] RBP: 0000000000000000 R08: 00000000314d4ab0 R09: 
0000a7ced08b81fb
[184503.429629] R10: 0000000000004400 R11: 0000000000000000 R12: 
0000000000000000
[184503.429658] R13: 0000000000000000 R14: ffff888103ff0480 R15: 
0000000000000000
[184503.429690]  default_idle+0x17/0x140
[184503.429843]  do_idle+0x1f9/0x220
[184503.429864]  cpu_startup_entry+0x14/0x20
[184503.429884]  start_kernel+0x4b6/0x4d8
[184503.429904]  secondary_startup_64+0xa4/0xb0
[184503.429934] Modules linked in:
[184503.430007] ---[ end trace 536ad19f63e35723 ]---
[184503.430032] RIP: 0010:xennet_poll+0x35f/0xae0
[184503.430055] Code: ba 00 01 00 00 48 8b 8d c0 00 00 00 0f b7 b4 24 92 00 00 
00 48 8b 5c 24 78 3d 00 01 00 00 0f 4e d0 89 55 28 8b 95 bc 00 00 00 <89> 74 11 
3c 48 8b 8d c0 00 00 00 8b 95 bc 00 00 00 89 44 11 38 89
[184503.430138] RSP: 0018:ffffc90000003e10 EFLAGS: 00010287
[184503.430159] RAX: 0000000000000042 RBX: ffffc90000003e88 RCX: 
fffe88800b865a80
[184503.430190] RDX: 0000000000000140 RSI: 0000000000000000 RDI: 
ffff888005504150
[184503.430236] RBP: ffff8880f0dfb800 R08: ffff888103417f00 R09: 
ffff888103010848
[184503.430266] R10: 0000000000000000 R11: ffffffff82c6e2e8 R12: 
ffff8880f0dfb800
[184503.430296] R13: 0000000000000001 R14: ffffc90000003ea0 R15: 
ffff8880055022e8
[184503.430331] FS:  0000000000000000(0000) GS:ffff888103c00000(0000) 
knlGS:0000000000000000
[184503.430361] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[184503.430384] CR2: 00007faab4774000 CR3: 0000000101652000 CR4: 
00000000000006f0
[184503.430422] Kernel panic - not syncing: Fatal exception in interrupt
[184503.430928] Kernel Offset: disabled

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