From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: xen-devel <xen-devel@lists.xen.org>,
Paul Durrant <paul.durrant@citrix.com>
Subject: Saving a guest crashes dom0
Date: Wed, 18 May 2016 09:54:15 -0400 [thread overview]
Message-ID: <573C7407.5020706@oracle.com> (raw)
Saving a guest (xl save) crashes dom0, log below.
Paul, this seems to be happening in the code that you modified
recently. If you don't have time I can look at this but it will
probably have to wait until tomorrow.
-boris
[ 176.347760] BUG: unable to handle kernel NULL pointer dereference at
0000000000000008
[ 176.347780] IP: [<ffffffff815b426f>] xenvif_flush_hash+0x6f/0xd0
[ 176.347791] PGD 563f067 PUD 54b1067 PMD 0
[ 176.347798] Oops: 0000 [#1] SMP
[ 176.347803] Modules linked in: dm_multipath dm_mod xen_evtchn
iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi
libcrc32c crc32c_generic crc32c_intel sg sr_mod cdrom sd_mod ahci
libahci libata scsi_mod i915 e1000e video backlight wmi tpm_tis
xen_blkfront xen_netfront xenfs xen_privcmd
[ 176.347840] CPU: 1 PID: 26 Comm: xenwatch Not tainted
4.6.0upstream-03623-g0b7962a-dirty #1
[ 176.347845] Hardware name: LENOVO ThinkServer TS130/ , BIOS
9HKT47AUS 01/10/2012
[ 176.347850] task: ffff880037e22140 ti: ffff880037e40000 task.ti:
ffff880037e40000
[ 176.347855] RIP: e030:[<ffffffff815b426f>] [<ffffffff815b426f>]
xenvif_flush_hash+0x6f/0xd0
[ 176.347862] RSP: e02b:ffff880037e43cb8 EFLAGS: 00010017
[ 176.347866] RAX: ffff880006190250 RBX: ffff88000619f840 RCX:
0000000000000000
[ 176.347870] RDX: 0000000000000001 RSI: ffffffff81215ce0 RDI:
ffff88000619fad0
[ 176.347875] RBP: ffff880037e43d28 R08: 0000000000000040 R09:
0000000000000040
[ 176.347879] R10: 0000000000000040 R11: 0000000000000001 R12:
ffff88000619fad0
[ 176.347883] R13: 0000000000000000 R14: ffff88000619fad8 R15:
ffff880037e43cd8
[ 176.347892] FS: 00007f3fa46cb710(0000) GS:ffff88003de80000(0000)
knlGS:0000000000000000
[ 176.347927] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 176.347930] CR2: 0000000000000008 CR3: 0000000006cad000 CR4:
0000000000042660
[ 176.347935] Stack:
[ 176.347939] 000000000000003e ffff880006190250 0000000000000002
000000000006c560
[ 176.347946] ffff88000619f850 0000000000000002 0000000000000000
ffffffff81476f4e
[ 176.347952] ffff880037e43d18 ffff88000619f840 0000000000000006
0000000000000040
[ 176.347959] Call Trace:
[ 176.347963] [<ffffffff81476f4e>] ? xenbus_unmap_ring_vfree+0xe/0x10
[ 176.347968] [<ffffffff815b42d9>] xenvif_deinit_hash+0x9/0x10
[ 176.347973] [<ffffffff815b315d>] xenvif_disconnect_ctrl+0x3d/0xb0
[ 176.347977] [<ffffffff815b27ac>] set_backend_state+0x13c/0x200
[ 176.347982] [<ffffffff815b2d97>] frontend_changed+0x77/0xe0
[ 176.347987] [<ffffffff8147afdd>] xenbus_otherend_changed+0x9d/0xa0
[ 176.347993] [<ffffffff8147b34b>] frontend_changed+0xb/0x10
[ 176.347997] [<ffffffff81478de8>] xenwatch_thread+0xc8/0x190
[ 176.348002] [<ffffffff810f8940>] ? woken_wake_function+0x10/0x10
[ 176.348008] [<ffffffff817d0b42>] ? schedule+0x42/0xb0
[ 176.348013] [<ffffffff817d4305>] ? _raw_spin_unlock_irqrestore+0x15/0x20
[ 176.348017] [<ffffffff81478d20>] ? join+0x60/0x60
[ 176.348022] [<ffffffff810d7c02>] kthread+0xd2/0xf0
[ 176.348027] [<ffffffff810df561>] ? finish_task_switch+0x91/0x220
[ 176.348032] [<ffffffff810e2359>] ? schedule_tail+0x19/0xd0
[ 176.348036] [<ffffffff817d49bf>] ret_from_fork+0x1f/0x40
[ 176.348041] [<ffffffff810d7b30>] ?
kthread_freezable_should_stop+0x80/0x80
[ 176.348045] Code: 90 02 00 00 4c 8d b3 98 02 00 00 4c 89 e7 e8 59 03
22 00 4c 8b ab 98 02 00 00 48 89 45 98 4d 39 f5 4c 89 6d c0 74 48 4c 8d
7d b0 <49> 8b 55 08 49 8b 45 00 48 bf 00 02 00 00 00 00 ad de 48 c7 c6
[ 176.348095] RIP [<ffffffff815b426f>] xenvif_flush_hash+0x6f/0xd0
[ 176.348101] RSP <ffff880037e43cb8>
[ 176.348103] CR2: 0000000000000008
[ 176.348108] ---[ end trace b58563dcb1aec61c ]---
[ 176.348111] Kernel panic - not syncing: Fatal exception
[ 176.348117] Kernel Offset: disabled
(XEN) [2016-05-18 13:06:05] Hardware Dom0 crashed: rebooting machine in
5 seconds.
(XEN) [2016-05-18 13:06:10] Resetting with ACPI MEMORY or I/O RESET_REG.
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next reply other threads:[~2016-05-18 13:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-18 13:54 Boris Ostrovsky [this message]
2016-05-18 14:18 ` Saving a guest crashes dom0 Paul Durrant
2016-05-18 14:23 ` Paul Durrant
2016-05-18 14:27 ` Paul Durrant
2016-05-18 14:56 ` Boris Ostrovsky
2016-05-18 14:59 ` Paul Durrant
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