I'm seeing a consistent crash with the test case below. With 5.5-rc5
there is an io_kiocb user-after-free bug in the stack trace.
--bijan
[global]
filename=/dev/nvme0n1
rw=randread
bs=256k
direct=1
time_based=1
randrepeat=1
gtod_reduce=1
[fiotest]
fio nvme.fio --readonly --ioengine=io_uring --iodepth 1024 --fixedbufs
--hipri --numjobs=$1 --runtime=$2
# pwd
/sys/kernel/debug/block/nvme0n1
# grep . hctx*/type
hctx0/type:default
hctx10/type:poll
hctx11/type:poll
hctx12/type:poll
hctx13/type:poll
hctx14/type:poll
hctx1/type:default
hctx2/type:default
hctx3/type:default
hctx4/type:default
hctx5/type:default
hctx6/type:default
hctx7/type:poll
hctx8/type:poll
hctx9/type:poll
# lscpu
CPU(s): 16
On-line CPU(s) list: 0-15
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 16
NUMA node(s): 1
[ 36.676431] ------------[ cut here ]------------
[ 36.679928] DMA-API: exceeded 7 overlapping mappings of cacheline
0x0000000005e373c0
[ 36.683789] WARNING: CPU: 0 PID: 4450 at kernel/dma/debug.c:500
add_dma_entry+0x114/0x180
[ 36.688226] Modules linked in: xfs dm_mod sr_mod sd_mod cdrom
crc32c_intel nvme ata_piix nvme_core libata e1000 virtio_pci
9pnet_virtio virtio_ring virtio 9p 9pnet
[ 36.696344] CPU: 0 PID: 4450 Comm: io_wqe_worker-0 Not tainted
5.5.0-rc5-bij #350
[ 36.703105] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
[ 36.712590] RIP: 0010:add_dma_entry+0x114/0x180
[ 36.716347] Code: f8 07 7e 55 80 3d 9b b8 59 01 00 75 4c 48 89 e2 be
07 00 00 00 48 c7 c7 b0 1d 12 82 31 c0 c6 05 81 b8 59 01 01 e8 cc 64 f7
ff <0f> 0b eb 2b 4c 89 e6 48 c7 c7 a0 05 52 82 e8 89 6b 7f 00 83 fb f4
[ 36.728910] RSP: 0018:ffffc900023a37d0 EFLAGS: 00010086
[ 36.733200] RAX: 0000000000000000 RBX: 00000000ffffffef RCX:
0000000000000001
[ 36.738455] RDX: 0000000000000001 RSI: 00000000fcd09a07 RDI:
ffff888232fea400
[ 36.743174] RBP: 0000000005e373c0 R08: ffff8881f3a55530 R09:
0000000074cf0ba0
[ 36.748052] R10: 0000000000000001 R11: 0000000000000000 R12:
0000000000000292
[ 36.752058] R13: ffff88823135ac80 R14: 0000000000000292 R15:
00000000ffffffff
[ 36.756879] FS: 0000000000000000(0000) GS:ffff888232e00000(0000)
knlGS:0000000000000000
[ 36.763292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 36.765706] CR2: 00007f7865cd1468 CR3: 00000001fae52001 CR4:
0000000000160ef0
[ 36.770354] Call Trace:
[ 36.772284] debug_dma_map_sg+0x2a6/0x340
[ 36.775589] ? dma_direct_map_sg+0x69/0xa0
[ 36.776950] nvme_queue_rq+0x41f/0xc99 [nvme]
[ 36.778546] ? kvm_sched_clock_read+0xd/0x20
[ 36.781190] ? __lock_acquire.isra.24+0x526/0x6c0
[ 36.784511] __blk_mq_try_issue_directly+0x120/0x1f0
[ 36.786874] ? __blk_mq_requeue_request+0xc1/0x120
[ 36.788804] blk_mq_try_issue_directly+0x57/0xb0
[ 36.792139] blk_mq_make_request+0x4fe/0x650
[ 36.794700] generic_make_request+0xfb/0x2f0
[ 36.796709] submit_bio+0x136/0x180
[ 36.799056] blkdev_direct_IO+0x421/0x460
[ 36.801071] generic_file_read_iter+0xde/0xc80
[ 36.804590] ? kvm_sched_clock_read+0xd/0x20
[ 36.806479] ? kvm_sched_clock_read+0xd/0x20
[ 36.808776] ? _cond_resched+0x20/0x30
[ 36.810685] io_read+0xf4/0x210
[ 36.812337] ? kvm_sched_clock_read+0xd/0x20
[ 36.815122] ? finish_task_switch+0x13e/0x2a0
[ 36.817828] ? do_raw_spin_unlock+0x83/0x90
[ 36.820634] ? _raw_spin_unlock_irq+0x1f/0x30
[ 36.823428] io_issue_sqe+0x81/0x960
[ 36.825024] ? __schedule+0x54c/0x6e0
[ 36.827386] io_wq_submit_work+0x54/0x1b0
[ 36.829359] io_worker_handle_work+0x33f/0x470
[ 36.831265] io_wqe_worker+0x35f/0x3a0
[ 36.834689] kthread+0x118/0x120
[ 36.836232] ? io_wqe_enqueue+0x130/0x130
[ 36.837973] ? kthread_insert_work_sanity_check+0x60/0x60
[ 36.840677] ret_from_fork+0x1f/0x30
[ 36.842612] ---[ end trace 6d29f9243c0c2fd3 ]---
[ 37.958777] general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC PTI
[ 37.961783] CPU: 3 PID: 4418 Comm: fio Tainted: G W
5.5.0-rc5-bij #350
[ 37.964377] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
[ 37.967975] RIP: 0010:blkdev_bio_end_io+0x71/0xe0
[ 37.969504] Code: 75 3c 0f b6 43 32 4c 8b 2b 84 c0 75 0a 48 8b 73 08
49 01 75 08 eb 0b 0f b6 f8 e8 8a 85 0f 00 48 63 f0 48 8b 03 31 d2 4c 89
ef <ff> 50 10 f6 43 14 01 74 32 48 8d 7b 18 e8 3d 39 0f 00 eb 27 48 8b
[ 37.975758] RSP: 0018:ffffc900022bfc20 EFLAGS: 00010246
[ 37.976141]
=============================================================================
[ 37.977857] RAX: ffff88808173e400 RBX: ffff888083ba4480 RCX:
0000000033323691
[ 37.981248] BUG io_kiocb (Tainted: G W ): Poison
overwritten
[ 37.984322] RDX: 0000000000000000 RSI: 0000000000040000 RDI:
ffff88808173e400
[ 37.986124]
-----------------------------------------------------------------------------
[ 37.986124]
[ 37.986127] INFO: 0x00000000ab4e622a-0x00000000ab4e622a @offset=9226.
First byte 0x6f instead of 0x6b
[ 37.989760] RBP: ffff888083ba4498 R08: ffff8881ff30b078 R09:
00000000fffffff0
[ 37.993948] INFO: Allocated in io_submit_sqes+0x160/0xa20 age=1372
cpu=0 pid=4414
[ 37.999091] R10: ffffffff82474ee0 R11: 0000000000000000 R12:
0000000000000000
[ 38.001693] __slab_alloc+0x40/0x5d
[ 38.001695] kmem_cache_alloc+0xb1/0x290
[ 38.005599] R13: ffff88808173e400 R14: 0000000000000000 R15:
0000000000000000
[ 38.009305] io_submit_sqes+0x160/0xa20
[ 38.010134] FS: 00007f78880c7740(0000) GS:ffff888233a00000(0000)
knlGS:0000000000000000
[ 38.011300] __x64_sys_io_uring_enter+0x1f6/0x423
[ 38.011304] do_syscall_64+0x63/0x1a0
[ 38.013411] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 38.016189] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 38.016194] INFO: Freed in io_free_req+0x41/0x210 age=39 cpu=0 pid=4414
[ 38.021660] CR2: 00007f7865d35668 CR3: 00000001f3b74001 CR4:
0000000000160ee0
[ 38.024586] kmem_cache_free+0x16f/0x240
[ 38.024589] io_free_req+0x41/0x210
[ 38.026796] Call Trace:
[ 38.030317] io_iopoll_getevents+0x28a/0x3d0
[ 38.032220] blk_update_request+0x219/0x3e0
[ 38.034541] __io_iopoll_check+0x75/0xa0
[ 38.037999] ? do_raw_spin_unlock+0x83/0x90
[ 38.039152] __x64_sys_io_uring_enter+0x270/0x423
[ 38.039154] do_syscall_64+0x63/0x1a0
[ 38.040986] blk_mq_end_request+0x1a/0x110
[ 38.041680] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 38.043052] blk_mq_complete_request+0x47/0xf0
[ 38.045060] INFO: Slab 0x0000000045354dd2 objects=32 used=32
fp=0x00000000dda1596f flags=0xfffffc0010200
[ 38.046499] nvme_poll+0x23a/0x2c0 [nvme]
[ 38.047354] INFO: Object 0x000000006e84cdd8 @offset=9216
fp=0x000000009ec683d4
[ 38.047354]
[ 38.048642] blk_poll+0x24f/0x320
[ 38.049378] Bytes b4 00000000176f5391: 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 ................
[ 38.050588] ? __lock_acquire.isra.24+0x526/0x6c0
[ 38.051658] Object 000000006e84cdd8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6f
6b 6b 6b 6b 6b kkkkkkkkkkokkkkk
[ 38.054254] ? find_held_lock+0x3c/0xa0
[ 38.057345] Object 00000000709b5f04: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.058887] io_iopoll_getevents+0x120/0x3d0
[ 38.061937] Object 0000000046ffe485: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.063034] ? __x64_sys_io_uring_enter+0x260/0x423
[ 38.065613] Object 00000000bc9ec79c: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.066808] __io_iopoll_check+0x75/0xa0
[ 38.069418] Object 000000006623f064: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.069419] Object 0000000017c29cf2: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.070412] __x64_sys_io_uring_enter+0x270/0x423
[ 38.072563] Object 00000000500a935d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.072565] Object 000000006ff56685: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.073614] ? __x64_sys_io_uring_enter+0x83/0x423
[ 38.075750] Object 00000000944d14a1: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.076844] do_syscall_64+0x63/0x1a0
[ 38.078938] Object 000000009e7ef42d: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.078939] Object 000000003d95cefa: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.079874] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 38.081913] Object 000000003b27a75a: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 38.084053] RIP: 0033:0x7f78870132cd
[ 38.085097] Object 000000004d942a34: 6b 6b 6b 6b 6b 6b 6b
a5 kkkkkkk.
[ 38.087347] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa
48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f
05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8b 6b 2c 00 f7 d8 64 89 01 48
[ 38.089440] CPU: 0 PID: 4414 Comm: fio Tainted: G B W
5.5.0-rc5-bij #350
[ 38.090618] RSP: 002b:00007ffe8781e238 EFLAGS: 00000246 ORIG_RAX:
00000000000001aa
[ 38.092901] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
[ 38.093738] RAX: ffffffffffffffda RBX: 00007f7865d25580 RCX:
00007f78870132cd
[ 38.093740] RDX: 0000000000000000 RSI: 0000000000000001 RDI:
0000000000000003
[ 38.096574] Call Trace:
[ 38.099242] RBP: 00007f7865d25580 R08: 0000000000000000 R09:
0000000000000000
[ 38.100476] dump_stack+0x64/0x83
[ 38.102545] R10: 0000000000000001 R11: 0000000000000246 R12:
00000000019b86d0
[ 38.103369] check_bytes_and_report+0xdd/0x130
[ 38.105359] R13: 0000000000000403 R14: 0000000000000001 R15:
0000000001a34928
[ 38.109540] check_object+0x121/0x250
[ 38.111328] Modules linked in: xfs dm_mod sr_mod sd_mod cdrom
crc32c_intel nvme ata_piix nvme_core libata e1000 virtio_pci
9pnet_virtio virtio_ring virtio 9p 9pnet
[ 38.112905] ? io_submit_sqes+0x160/0xa20
[ 38.117085] ---[ end trace 6d29f9243c0c2fd4 ]---
[ 38.119512] alloc_debug_processing+0x80/0x129
[ 38.119514] ___slab_alloc+0x4fd/0x6a0
[ 38.119516] ? io_read_prep+0x28/0xc0
[ 38.119519] ? io_submit_sqes+0x160/0xa20
[ 38.121431] RIP: 0010:blkdev_bio_end_io+0x71/0xe0
[ 38.122431] ? io_issue_sqe+0x8eb/0x960
[ 38.122434] ? io_submit_sqes+0x160/0xa20
[ 38.122436] __slab_alloc+0x40/0x5d
[ 38.124618] Code: 75 3c 0f b6 43 32 4c 8b 2b 84 c0 75 0a 48 8b 73 08
49 01 75 08 eb 0b 0f b6 f8 e8 8a 85 0f 00 48 63 f0 48 8b 03 31 d2 4c 89
ef <ff> 50 10 f6 43 14 01 74 32 48 8d 7b 18 e8 3d 39 0f 00 eb 27 48 8b
[ 38.125419] ? io_submit_sqes+0x160/0xa20
[ 38.127222] RSP: 0018:ffffc900022bfc20 EFLAGS: 00010246
[ 38.128419] kmem_cache_alloc+0xb1/0x290
[ 38.128422] io_submit_sqes+0x160/0xa20
[ 38.128424] ? io_submit_sqes+0xd7/0xa20
[ 38.130239] RAX: ffff88808173e400 RBX: ffff888083ba4480 RCX:
0000000033323691
[ 38.130992] ? __x64_sys_io_uring_enter+0x1c5/0x423
[ 38.130994] ? __x64_sys_io_uring_enter+0x1c5/0x423
[ 38.134617] RDX: 0000000000000000 RSI: 0000000000040000 RDI:
ffff88808173e400
[ 38.135617] ? __x64_sys_io_uring_enter+0x83/0x423
[ 38.135619] __x64_sys_io_uring_enter+0x1f6/0x423
[ 38.135620] ? __x64_sys_io_uring_enter+0x83/0x423
[ 38.135624] do_syscall_64+0x63/0x1a0
[ 38.136758] RBP: ffff888083ba4498 R08: ffff8881ff30b078 R09:
00000000fffffff0
[ 38.138172] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 38.138174] RIP: 0033:0x7f78870132cd
[ 38.138177] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa
48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f
05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8b 6b 2c 00 f7 d8 64 89 01 48
[ 38.138990] R10: ffffffff82474ee0 R11: 0000000000000000 R12:
0000000000000000
[ 38.139778] RSP: 002b:00007ffe8781e238 EFLAGS: 00000246 ORIG_RAX:
00000000000001aa
[ 38.139779] RAX: ffffffffffffffda RBX: 00007f7865cc1380 RCX:
00007f78870132cd
[ 38.139780] RDX: 0000000000000000 RSI: 0000000000000001 RDI:
0000000000000003
[ 38.139781] RBP: 00007f7865cc1380 R08: 0000000000000000 R09:
0000000000000000
[ 38.139782] R10: 0000000000000001 R11: 0000000000000246 R12:
00000000019b8650
[ 38.140795] R13: ffff88808173e400 R14: 0000000000000000 R15:
0000000000000000
[ 38.142071] R13: 00000000000004b3 R14: 0000000000000001 R15:
0000000001a232a8
[ 38.142076] FIX io_kiocb: Restoring
0x00000000ab4e622a-0x00000000ab4e622a=0x6b
[ 38.142076]
[ 38.143177] FS: 00007f78880c7740(0000) GS:ffff888233a00000(0000)
knlGS:0000000000000000
[ 38.144871] FIX io_kiocb: Marking all objects used
[ 38.156470] BUG: unable to handle page fault for address:
ffff888084174010
[ 38.157440] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 38.159346] #PF: supervisor read access in kernel mode
[ 38.159347] #PF: error_code(0x0000) - not-present page
[ 38.159348] PGD 4201067 P4D 4201067 PUD 23fb01067 PMD 23fae0067 PTE
800fffff7be8b060
[ 38.159352] Oops: 0000 [#2] SMP DEBUG_PAGEALLOC PTI
[ 38.160518] CR2: 00007f7865d35668 CR3: 00000001f3b74001 CR4:
0000000000160ee0
[ 38.162432] CPU: 11 PID: 4413 Comm: fio Tainted: G B D W
5.5.0-rc5-bij #350
[ 38.162433] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
[ 38.162437] RIP: 0010:debug_dma_unmap_sg+0x8f/0x140
[ 38.163808] Kernel panic - not syncing: Fatal exception
[ 38.165156] Code: 31 ff c7 44 24 0c 00 00 00 00 31 c0 b9 10 00 00 00
48 89 df f3 48 ab 48 8b 04 24 48 ba 00 00 00 00 00 16 00 00 48 89 44 24
20 <49> 8b 44 24 10 48 89 44 24 28 41 8b 44 24 18 c7 44 24 38 01 00 00
[ 38.211209] RSP: 0018:ffffc90002297b30 EFLAGS: 00010246
[ 38.212177] RAX: ffff8882316020b0 RBX: ffffc90002297b40 RCX:
0000000000000000
[ 38.213484] RDX: 0000160000000000 RSI: ffff888084174000 RDI:
ffffc90002297bc0
[ 38.214792] RBP: ffffc90002297c30 R08: 0000000000000000 R09:
0000000000000001
[ 38.216098] R10: ffff888083b89440 R11: 0000000000000001 R12:
ffff888084174000
[ 38.217405] R13: 0000000000000001 R14: 0000000000000002 R15:
0000000000000000
[ 38.218713] FS: 00007f78880c7740(0000) GS:ffff888235a00000(0000)
knlGS:0000000000000000
[ 38.220197] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 38.221256] CR2: ffff888084174010 CR3: 0000000200ae2004 CR4:
0000000000160ee0
[ 38.222566] Call Trace:
[ 38.223040] nvme_unmap_data+0x109/0x250 [nvme]
[ 38.223886] nvme_pci_complete_rq+0xda/0xf0 [nvme]
[ 38.224778] blk_mq_complete_request+0x47/0xf0
[ 38.225600] nvme_poll+0x23a/0x2c0 [nvme]
[ 38.226352] blk_poll+0x24f/0x320
[ 38.226976] ? __lock_acquire.isra.24+0x526/0x6c0
[ 38.227850] ? find_held_lock+0x3c/0xa0
[ 38.228563] io_iopoll_getevents+0x120/0x3d0
[ 38.229359] ? __x64_sys_io_uring_enter+0x260/0x423
[ 38.230263] __io_iopoll_check+0x75/0xa0
[ 38.230996] __x64_sys_io_uring_enter+0x270/0x423
[ 38.231869] ? __x64_sys_io_uring_enter+0x83/0x423
[ 38.232761] do_syscall_64+0x63/0x1a0
[ 38.233442] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 38.234376] RIP: 0033:0x7f78870132cd
[ 38.235046] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa
48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f
05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8b 6b 2c 00 f7 d8 64 89 01 48
[ 38.238459] RSP: 002b:00007ffe8781e238 EFLAGS: 00000246 ORIG_RAX:
00000000000001aa
[ 38.239858] RAX: ffffffffffffffda RBX: 00007f7865ca8300 RCX:
00007f78870132cd
[ 38.241168] RDX: 0000000000000000 RSI: 0000000000000001 RDI:
0000000000000003
[ 38.242477] RBP: 00007f7865ca8300 R08: 0000000000000000 R09:
0000000000000000
[ 38.243788] R10: 0000000000000001 R11: 0000000000000246 R12:
00000000019b8630
[ 38.245094] R13: 0000000000000455 R14: 0000000000000001 R15:
0000000001a2bb68
[ 38.246404] Modules linked in: xfs dm_mod sr_mod sd_mod cdrom
crc32c_intel nvme ata_piix nvme_core libata e1000 virtio_pci
9pnet_virtio virtio_ring virtio 9p 9pnet
[ 38.249080] CR2: ffff888084174010
[ 38.249702] ---[ end trace 6d29f9243c0c2fd5 ]---
[ 38.250562] RIP: 0010:blkdev_bio_end_io+0x71/0xe0
[ 38.251438] Code: 75 3c 0f b6 43 32 4c 8b 2b 84 c0 75 0a 48 8b 73 08
49 01 75 08 eb 0b 0f b6 f8 e8 8a 85 0f 00 48 63 f0 48 8b 03 31 d2 4c 89
ef <ff> 50 10 f6 43 14 01 74 32 48 8d 7b 18 e8 3d 39 0f 00 eb 27 48 8b
[ 38.254855] RSP: 0018:ffffc900022bfc20 EFLAGS: 00010246
[ 38.255820] RAX: ffff88808173e400 RBX: ffff888083ba4480 RCX:
0000000033323691
[ 38.257127] RDX: 0000000000000000 RSI: 0000000000040000 RDI:
ffff88808173e400
[ 38.258435] RBP: ffff888083ba4498 R08: ffff8881ff30b078 R09:
00000000fffffff0
[ 38.259747] R10: ffffffff82474ee0 R11: 0000000000000000 R12:
0000000000000000
[ 38.261056] R13: ffff88808173e400 R14: 0000000000000000 R15:
0000000000000000
[ 38.262366] FS: 00007f78880c7740(0000) GS:ffff888235a00000(0000)
knlGS:0000000000000000
[ 38.263854] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 38.264917] CR2: ffff888084174010 CR3: 0000000200ae2004 CR4:
0000000000160ee0
[ 39.230854] Shutting down cpus with NMI
[ 39.231641] Kernel Offset: disabled
[ 39.232302] ---[ end Kernel panic - not syncing: Fatal exception ]---
