【Bug】use-after-free in NVMe request double completion detected by kasan
xiaohui li
buhuiyuanyuan1984 at gmail.com
Fri Sep 15 00:00:34 PDT 2023
hello everyone:
on my aarch64 board + linux kernel 5.10.4, while doing nvme io test,
a use-after-free bug has been detected by kasan such as below,
as this bug has turned up frequently, with high probability.
in the end, my nvme disk can't work right now.
hope some one can give me some advise on how to solve this problem, many thanks.
------------------------------------------
nvme nvme0: I/O 75 QID 6 timeout, aborting
nvme nvme0: Abort status: 0x0
nvme nvme0: I/O 75 QID 6 timeout, reset controller
nvme nvme0: 15/0/0 default/read/poll queues
[ 163.462149][ C1] BUG: KASAN: use-after-free in
dma_direct_unmap_sg+0x78/0x298
[ 163.469591][ C1] Read of size 8 at addr ffff0000462fa010 by task
kworker/u16:5/475
[ 163.477457][ C1]
[ 163.479679][ C1] CPU: 1 PID: 475 Comm: kworker/u16:5 Not tainted 5.10.4 #2
[ 163.486847][ C1] Hardware name: Intellifusion Edge10 (DT)
[ 163.492558][ C1] Workqueue: writeback wb_workfn (flush-259:0)
[ 163.498618][ C1] Call trace:
[ 163.501794][ C1] dump_backtrace+0x0/0x2b8
[ 163.506182][ C1] show_stack+0x20/0x70
[ 163.510230][ C1] dump_stack+0xfc/0x168
[ 163.514371][ C1] print_address_description.constprop.0+0x70/0x4e4
[ 163.520856][ C1] kasan_report+0x138/0x208
[ 163.525247][ C1] __asan_load8+0x9c/0xd8
[ 163.529466][ C1] dma_direct_unmap_sg+0x78/0x298
[ 163.534378][ C1] dma_unmap_sg_attrs+0x64/0xb0
[ 163.539126][ C1] nvme_unmap_data+0xb0/0x298
[ 163.543697][ C1] nvme_pci_complete_rq+0x7c/0x140
[ 163.548699][ C1] nvme_irq+0x218/0x4a8
[ 163.552749][ C1] __handle_irq_event_percpu+0x8c/0x3c8
[ 163.558188][ C1] handle_irq_event_percpu+0x8c/0x108
[ 163.563451][ C1] handle_irq_event+0x6c/0x120
[ 163.568105][ C1] handle_simple_irq+0xe0/0x128
[ 163.572846][ C1] generic_handle_irq+0x54/0x70
[ 163.577595][ C1] edge_pcie_irq_domain_handler+0x128/0x1a8
[ 163.583380][ C1] generic_handle_irq+0x54/0x70
[ 163.588121][ C1] __handle_domain_irq+0x88/0xf0
[ 163.592947][ C1] gic_handle_irq+0xe4/0x128
[ 163.597425][ C1] el1_irq+0xc4/0x180
[ 163.601296][ C1] __asan_load8+0x70/0xd8
[ 163.605518][ C1] walk_stackframe+0x3c/0x78
[ 163.609995][ C1] arch_stack_walk+0xd4/0x168
[ 163.614563][ C1] stack_trace_save+0xa4/0xd8
[ 163.619129][ C1] kasan_save_stack+0x28/0x58
[ 163.623695][ C1] __kasan_kmalloc.isra.0+0xc8/0xe8
[ 163.628783][ C1] kasan_slab_alloc+0x18/0x28
[ 163.633349][ C1] kmem_cache_alloc+0x1a8/0x640
[ 163.638089][ C1] ext4_init_io_end+0x2c/0xb0
[ 163.642657][ C1] ext4_writepages+0x4bc/0x1288
[ 163.647398][ C1] do_writepages+0xc0/0x1a0
[ 163.651796][ C1] __writeback_single_inode+0x70/0x7e0
[ 163.657148][ C1] writeback_sb_inodes+0x324/0x708
[ 163.662152][ C1] __writeback_inodes_wb+0x70/0x158
[ 163.667243][ C1] wb_writeback+0x3ac/0x620
[ 163.671636][ C1] wb_workfn+0x3cc/0x900
[ 163.675769][ C1] process_one_work+0x3e8/0x888
[ 163.680507][ C1] worker_thread+0x7c/0x678
[ 163.684901][ C1] kthread+0x1e0/0x220
[ 163.688858][ C1] ret_from_fork+0x10/0x34
[ 163.693154][ C1]
[ 163.695365][ C1] Allocated by task 475:
[ 163.699498][ C1] stack_trace_save+0xa4/0xd8
[ 163.704063][ C1] kasan_save_stack+0x28/0x58
[ 163.708628][ C1] __kasan_kmalloc.isra.0+0xc8/0xe8
[ 163.713715][ C1] kasan_kmalloc+0x10/0x20
[ 163.718017][ C1] __kmalloc+0x3cc/0x690
[ 163.722152][ C1] mempool_kmalloc+0x24/0x30
[ 163.726632][ C1] mempool_alloc+0xe8/0x218
[ 163.731027][ C1] nvme_map_data+0xf0/0xda8
[ 163.735419][ C1] nvme_queue_rq+0x148/0x3b8
[ 163.739903][ C1] __blk_mq_try_issue_directly+0x214/0x2e8
[ 163.745602][ C1] blk_mq_request_issue_directly+0xbc/0x108
[ 163.751388][ C1] blk_mq_try_issue_list_directly+0xe8/0x1d8
[ 163.757266][ C1] blk_mq_sched_insert_requests+0x230/0x300
[ 163.763052][ C1] blk_mq_flush_plug_list+0x22c/0x3c8
[ 163.768318][ C1] blk_flush_plug_list+0x1e4/0x228
[ 163.773319][ C1] blk_mq_submit_bio+0x40c/0xa50
[ 163.778147][ C1] submit_bio_noacct+0x590/0x630
[ 163.782965][ C1] submit_bio+0xc8/0x360
[ 163.787093][ C1] ext4_io_submit+0xa8/0xd0
[ 163.791485][ C1] ext4_writepages+0x8f8/0x1288
[ 163.796224][ C1] do_writepages+0xc0/0x1a0
[ 163.800621][ C1] __writeback_single_inode+0x70/0x7e0
[ 163.805974][ C1] writeback_sb_inodes+0x324/0x708
[ 163.810978][ C1] __writeback_inodes_wb+0x70/0x158
[ 163.816068][ C1] wb_writeback+0x3ac/0x620
[ 163.820461][ C1] wb_workfn+0x3cc/0x900
[ 163.824590][ C1] process_one_work+0x3e8/0x888
[ 163.829328][ C1] worker_thread+0x7c/0x678
[ 163.833721][ C1] kthread+0x1e0/0x220
[ 163.837677][ C1] ret_from_fork+0x10/0x34
[ 163.841972][ C1]
[ 163.844181][ C1] Freed by task 475:
[ 163.847967][ C1] stack_trace_save+0xa4/0xd8
[ 163.852533][ C1] kasan_save_stack+0x28/0x58
[ 163.857097][ C1] kasan_set_track+0x28/0x40
[ 163.861577][ C1] kasan_set_free_info+0x24/0x48
[ 163.866402][ C1] __kasan_slab_free+0x100/0x180
[ 163.871227][ C1] kasan_slab_free+0x14/0x20
[ 163.875703][ C1] kfree+0xe0/0x400
[ 163.879401][ C1] mempool_kfree+0x18/0x28
[ 163.883706][ C1] mempool_free+0x7c/0x1e0
[ 163.888013][ C1] nvme_unmap_data+0x1ac/0x298
[ 163.892668][ C1] nvme_pci_complete_rq+0x7c/0x140
[ 163.897670][ C1] nvme_irq+0x218/0x4a8
[ 163.901717][ C1] __handle_irq_event_percpu+0x8c/0x3c8
[ 163.907155][ C1] handle_irq_event_percpu+0x8c/0x108
[ 163.912419][ C1] handle_irq_event+0x6c/0x120
[ 163.917072][ C1] handle_simple_irq+0xe0/0x128
[ 163.921812][ C1] generic_handle_irq+0x54/0x70
[ 163.926560][ C1] edge_pcie_irq_domain_handler+0x128/0x1a8
[ 163.932345][ C1] generic_handle_irq+0x54/0x70
[ 163.937085][ C1] __handle_domain_irq+0x88/0xf0
[ 163.941909][ C1] gic_handle_irq+0xe4/0x128
[ 163.946378][ C1]
[ 163.948594][ C1] The buggy address belongs to the object at
ffff0000462fa000
[ 163.948594][ C1] which belongs to the cache kmalloc-4k of size 4096
[ 163.962561][ C1] The buggy address is located 16 bytes inside of
[ 163.962561][ C1] 4096-byte region [ffff0000462fa000, ffff0000462fb000)
[ 163.975734][ C1] The buggy address belongs to the page:
[ 163.981262][ C1] page:00000000925a6593 refcount:1 mapcount:0
mapping:0000000000000000 index:0x0 pfn:0x2462f8
[ 163.991397][ C1] head:00000000925a6593 order:3
compound_mapcount:0 compound_pincount:0
[ 163.999622][ C1] flags: 0x4000000000010200(slab|head)
[ 164.004983][ C1] raw: 4000000000010200 dead000000000100
dead000000000122 ffff000042003500
[ 164.013469][ C1] raw: 0000000000000000 0000000000040004
00000001ffffffff 0000000000000000
[ 164.021946][ C1] page dumped because: kasan: bad access detected
[ 164.028242][ C1]
[ 164.030450][ C1] Memory state around the buggy address:
[ 164.035973][ C1] ffff0000462f9f00: fc fc fc fc fc fc fc fc fc
fc fc fc fc fc fc fc
[ 164.043934][ C1] ffff0000462f9f80: fc fc fc fc fc fc fc fc fc
fc fc fc fc fc fc fc
[ 164.051894][ C1] >ffff0000462fa000: fa fb fb fb fb fb fb fb fb
fb fb fb fb fb fb fb
[ 164.059848][ C1] ^
[ 164.064326][ C1] ffff0000462fa080: fb fb fb fb fb fb fb fb fb
fb fb fb fb fb fb fb
[ 164.072287][ C1] ffff0000462fa100: fb fb fb fb fb fb fb fb fb
fb fb fb fb fb fb fb
....
[ 164.102216][ C1] BUG: KASAN: double-free or invalid-free in
mempool_kfree+0x18/0x28
[ 164.110169][ C1]
[ 164.112390][ C1] CPU: 1 PID: 475 Comm: kworker/u16:5 Tainted: G
B 5.10.4 #2
[ 164.120955][ C1] Hardware name: Intellifusion Edge10 (DT)
[ 164.126661][ C1] Workqueue: writeback wb_workfn (flush-259:0)
[ 164.132720][ C1] Call trace:
[ 164.135892][ C1] dump_backtrace+0x0/0x2b8
[ 164.140282][ C1] show_stack+0x20/0x70
[ 164.144328][ C1] dump_stack+0xfc/0x168
[ 164.148469][ C1] print_address_description.constprop.0+0x70/0x4e4
[ 164.154951][ C1] kasan_report_invalid_free+0x64/0x90
[ 164.160299][ C1] __kasan_slab_free+0x154/0x180
[ 164.165126][ C1] kasan_slab_free+0x14/0x20
[ 164.169601][ C1] kfree+0xe0/0x400
[ 164.173299][ C1] mempool_kfree+0x18/0x28
[ 164.177605][ C1] mempool_free+0x7c/0x1e0
[ 164.181914][ C1] nvme_unmap_data+0x1ac/0x298
[ 164.186569][ C1] nvme_pci_complete_rq+0x7c/0x140
[ 164.191570][ C1] nvme_irq+0x218/0x4a8
[ 164.195619][ C1] __handle_irq_event_percpu+0x8c/0x3c8
[ 164.201058][ C1] handle_irq_event_percpu+0x8c/0x108
[ 164.206322][ C1] handle_irq_event+0x6c/0x120
[ 164.210976][ C1] handle_simple_irq+0xe0/0x128
[ 164.215717][ C1] generic_handle_irq+0x54/0x70
[ 164.220464][ C1] edge_pcie_irq_domain_handler+0x128/0x1a8
[ 164.226250][ C1] generic_handle_irq+0x54/0x70
[ 164.230992][ C1] __handle_domain_irq+0x88/0xf0
[ 164.235817][ C1] gic_handle_irq+0xe4/0x128
[ 164.240292][ C1] el1_irq+0xc4/0x180
[ 164.244163][ C1] __asan_load8+0x70/0xd8
[ 164.248384][ C1] walk_stackframe+0x3c/0x78
[ 164.252860][ C1] arch_stack_walk+0xd4/0x168
[ 164.257429][ C1] stack_trace_save+0xa4/0xd8
[ 164.261995][ C1] kasan_save_stack+0x28/0x58
[ 164.266561][ C1] __kasan_kmalloc.isra.0+0xc8/0xe8
[ 164.271650][ C1] kasan_slab_alloc+0x18/0x28
[ 164.276213][ C1] kmem_cache_alloc+0x1a8/0x640
[ 164.280952][ C1] ext4_init_io_end+0x2c/0xb0
[ 164.285517][ C1] ext4_writepages+0x4bc/0x1288
[ 164.290257][ C1] do_writepages+0xc0/0x1a0
[ 164.294655][ C1] __writeback_single_inode+0x70/0x7e0
[ 164.300008][ C1] writeback_sb_inodes+0x324/0x708
[ 164.305012][ C1] __writeback_inodes_wb+0x70/0x158
[ 164.310102][ C1] wb_writeback+0x3ac/0x620
[ 164.314497][ C1] wb_workfn+0x3cc/0x900
[ 164.318628][ C1] process_one_work+0x3e8/0x888
[ 164.323365][ C1] worker_thread+0x7c/0x678
[ 164.327759][ C1] kthread+0x1e0/0x220
[ 164.331716][ C1] ret_from_fork+0x10/0x34
[ 164.336013][ C1]
[ 164.338223][ C1] Allocated by task 475:
[ 164.342356][ C1] stack_trace_save+0xa4/0xd8
[ 164.346921][ C1] kasan_save_stack+0x28/0x58
[ 164.351487][ C1] __kasan_kmalloc.isra.0+0xc8/0xe8
[ 164.356574][ C1] kasan_kmalloc+0x10/0x20
[ 164.360876][ C1] __kmalloc+0x3cc/0x690
[ 164.365009][ C1] mempool_kmalloc+0x24/0x30
[ 164.369488][ C1] mempool_alloc+0xe8/0x218
[ 164.373883][ C1] nvme_map_data+0xf0/0xda8
[ 164.378276][ C1] nvme_queue_rq+0x148/0x3b8
[ 164.382760][ C1] __blk_mq_try_issue_directly+0x214/0x2e8
[ 164.388460][ C1] blk_mq_request_issue_directly+0xbc/0x108
[ 164.394246][ C1] blk_mq_try_issue_list_directly+0xe8/0x1d8
[ 164.400125][ C1] blk_mq_sched_insert_requests+0x230/0x300
[ 164.405909][ C1] blk_mq_flush_plug_list+0x22c/0x3c8
[ 164.411175][ C1] blk_flush_plug_list+0x1e4/0x228
[ 164.416177][ C1] blk_mq_submit_bio+0x40c/0xa50
[ 164.421005][ C1] submit_bio_noacct+0x590/0x630
[ 164.425831][ C1] submit_bio+0xc8/0x360
[ 164.429960][ C1] ext4_io_submit+0xa8/0xd0
[ 164.434352][ C1] ext4_writepages+0x8f8/0x1288
[ 164.439090][ C1] do_writepages+0xc0/0x1a0
[ 164.443487][ C1] __writeback_single_inode+0x70/0x7e0
[ 164.448838][ C1] writeback_sb_inodes+0x324/0x708
[ 164.453842][ C1] __writeback_inodes_wb+0x70/0x158
[ 164.458931][ C1] wb_writeback+0x3ac/0x620
[ 164.463325][ C1] wb_workfn+0x3cc/0x900
[ 164.467456][ C1] process_one_work+0x3e8/0x888
[ 164.472193][ C1] worker_thread+0x7c/0x678
[ 164.476585][ C1] kthread+0x1e0/0x220
[ 164.480541][ C1] ret_from_fork+0x10/0x34
[ 164.484836][ C1]
[ 164.487045][ C1] Freed by task 475:
[ 164.490828][ C1] stack_trace_save+0xa4/0xd8
[ 164.495393][ C1] kasan_save_stack+0x28/0x58
[ 164.499958][ C1] kasan_set_track+0x28/0x40
[ 164.504438][ C1] kasan_set_free_info+0x24/0x48
[ 164.509264][ C1] __kasan_slab_free+0x100/0x180
[ 164.514089][ C1] kasan_slab_free+0x14/0x20
[ 164.518564][ C1] kfree+0xe0/0x400
[ 164.522261][ C1] mempool_kfree+0x18/0x28
[ 164.526567][ C1] mempool_free+0x7c/0x1e0
[ 164.530875][ C1] nvme_unmap_data+0x1ac/0x298
[ 164.535529][ C1] nvme_pci_complete_rq+0x7c/0x140
[ 164.540531][ C1] nvme_irq+0x218/0x4a8
[ 164.544577][ C1] __handle_irq_event_percpu+0x8c/0x3c8
[ 164.550016][ C1] handle_irq_event_percpu+0x8c/0x108
[ 164.555279][ C1] handle_irq_event+0x6c/0x120
[ 164.559931][ C1] handle_simple_irq+0xe0/0x128
[ 164.564672][ C1] generic_handle_irq+0x54/0x70
[ 164.569408][ C1] edge_pcie_irq_domain_handler+0x128/0x1a8
[ 164.575192][ C1] generic_handle_irq+0x54/0x70
[ 164.579932][ C1] __handle_domain_irq+0x88/0xf0
[ 164.584757][ C1] gic_handle_irq+0xe4/0x128
[ 164.589225][ C1]
[ 164.591439][ C1] The buggy address belongs to the object at
ffff0000462fa000
[ 164.591439][ C1] which belongs to the cache kmalloc-4k of size 4096
[ 164.605405][ C1] The buggy address is located 0 bytes inside of
[ 164.605405][ C1] 4096-byte region [ffff0000462fa000, ffff0000462fb000)
[ 164.618491][ C1] The buggy address belongs to the page:
[ 164.624015][ C1] page:00000000925a6593 refcount:1 mapcount:0
mapping:0000000000000000 index:0x0 pfn:0x2462f8
[ 164.634151][ C1] head:00000000925a6593 order:3
compound_mapcount:0 compound_pincount:0
[ 164.642374][ C1] flags: 0x4000000000010200(slab|head)
[ 164.647732][ C1] raw: 4000000000010200 dead000000000100
dead000000000122 ffff000042003500
[ 164.656218][ C1] raw: 0000000000000000 0000000000040004
00000001ffffffff 0000000000000000
[ 164.664694][ C1] page dumped because: kasan: bad access detected
[ 164.670990][ C1]
[ 164.673199][ C1] Memory state around the buggy address:
[ 164.678721][ C1] ffff0000462f9f00: fc fc fc fc fc fc fc fc fc
fc fc fc fc fc fc fc
[ 164.686682][ C1] ffff0000462f9f80: fc fc fc fc fc fc fc fc fc
fc fc fc fc fc fc fc
[ 164.694642][ C1] >ffff0000462fa000: fa fb fb fb fb fb fb fb fb
fb fb fb fb fb fb fb
[ 164.702594][ C1] ^
[ 164.706550][ C1] ffff0000462fa080: fb fb fb fb fb fb fb fb fb
fb fb fb fb fb fb fb
[ 164.714510][ C1] ffff0000462fa100: fb fb fb fb fb fb fb fb fb
fb fb fb fb fb fb fb
[ 164.722464][ C1]
==================================================================
[ 164.730436][ C1] ------------[ cut here ]------------
[ 164.735781][ C1] refcount_t: underflow; use-after-free.
[ 164.741420][ C1] WARNING: CPU: 1 PID: 475 at lib/refcount.c:28
refcount_warn_saturate+0x11c/0x178
[ 164.750600][ C1] Modules linked in:
[ 164.754402][ C1] CPU: 1 PID: 475 Comm: kworker/u16:5 Tainted: G
B 5.10.4 #2
[ 164.762967][ C1] Hardware name: Intellifusion Edge10 (DT)
[ 164.768677][ C1] Workqueue: writeback wb_workfn (flush-259:0)
[ 164.774741][ C1] pstate: 60400085 (nZCv daIf +PAN -UAO -TCO BTYPE=--)
[ 164.781489][ C1] pc : refcount_warn_saturate+0x11c/0x178
[ 164.787103][ C1] lr : refcount_warn_saturate+0x11c/0x178
[ 164.792706][ C1] sp : ffff0000eb4a0fe0
[ 164.796743][ C1] x29: ffff0000eb4a0fe0 x28: 0000000000000000
[ 164.802800][ C1] x27: 00000000000001a2 x26: ffff0000453671f6
[ 164.808856][ C1] x25: fffffdffbfeeaf00 x24: ffff0000457b751c
[ 164.814913][ C1] x23: ffff0000457b7518 x22: 0000000000000000
[ 164.820969][ C1] x21: ffff000045e70000 x20: ffff0000457b75d0
[ 164.827024][ C1] x19: 0000000000000003 x18: 0000000000000000
[ 164.833078][ C1] x17: 0000000000000000 x16: 0000000000000000
[ 164.839133][ C1] x15: 0000000000000000 x14: 0720072007200720
[ 164.845191][ C1] x13: 0720072007200720 x12: ffff80001d690d0c
[ 164.851248][ C1] x11: 1fffe0001d690d0b x10: ffff80001d690d0b
[ 164.857305][ C1] x9 : dfffa00000000000 x8 : ffff0000eb48685b
[ 164.863360][ C1] x7 : 0000000000000001 x6 : ffff0000eb486858
[ 164.869416][ C1] x5 : 00007fffe296f2f5 x4 : dfffa00000000000
[ 164.875473][ C1] x3 : ffffa000100e359c x2 : ffff80001d6941c6
[ 164.881529][ C1] x1 : 050c75be6612ca00 x0 : 0000000000000000
[ 164.887584][ C1] Call trace:
[ 164.890766][ C1] refcount_warn_saturate+0x11c/0x178
[ 164.896031][ C1] blk_mq_free_request+0x254/0x2c0
[ 164.901032][ C1] blk_mq_end_request+0x1c4/0x1e8
[ 164.905951][ C1] nvme_complete_rq+0xa8/0x458
[ 164.910608][ C1] nvme_pci_complete_rq+0x84/0x140
[ 164.915610][ C1] nvme_irq+0x218/0x4a8
[ 164.919660][ C1] __handle_irq_event_percpu+0x8c/0x3c8
[ 164.925098][ C1] handle_irq_event_percpu+0x8c/0x108
[ 164.930362][ C1] handle_irq_event+0x6c/0x120
[ 164.935016][ C1] handle_simple_irq+0xe0/0x128
[ 164.939756][ C1] generic_handle_irq+0x54/0x70
[ 164.944502][ C1] edge_pcie_irq_domain_handler+0x128/0x1a8
[ 164.950287][ C1] generic_handle_irq+0x54/0x70
[ 164.955028][ C1] __handle_domain_irq+0x88/0xf0
[ 164.959854][ C1] gic_handle_irq+0xe4/0x128
[ 164.964331][ C1] el1_irq+0xc4/0x180
[ 164.968202][ C1] __asan_load8+0x70/0xd8
[ 164.972425][ C1] walk_stackframe+0x3c/0x78
[ 164.976902][ C1] arch_stack_walk+0xd4/0x168
[ 164.981471][ C1] stack_trace_save+0xa4/0xd8
[ 164.986036][ C1] kasan_save_stack+0x28/0x58
[ 164.990603][ C1] __kasan_kmalloc.isra.0+0xc8/0xe8
[ 164.995690][ C1] kasan_slab_alloc+0x18/0x28
[ 165.000254][ C1] kmem_cache_alloc+0x1a8/0x640
[ 165.004992][ C1] ext4_init_io_end+0x2c/0xb0
[ 165.009559][ C1] ext4_writepages+0x4bc/0x1288
[ 165.014301][ C1] do_writepages+0xc0/0x1a0
[ 165.018699][ C1] __writeback_single_inode+0x70/0x7e0
[ 165.024051][ C1] writeback_sb_inodes+0x324/0x708
[ 165.029055][ C1] __writeback_inodes_wb+0x70/0x158
[ 165.034145][ C1] wb_writeback+0x3ac/0x620
[ 165.038539][ C1] wb_workfn+0x3cc/0x900
[ 165.042669][ C1] process_one_work+0x3e8/0x888
[ 165.047406][ C1] worker_thread+0x7c/0x678
[ 165.051800][ C1] kthread+0x1e0/0x220
[ 165.055757][ C1] ret_from_fork+0x10/0x34
[ 165.060058][ C1] ---[ end trace 39fad493b57b2c12 ]---
[ 165.188702][ C4] nvme nvme0: invalid id 0 completed on queue 5
[ 165.247987][ C4] nvme nvme0: invalid id 0 completed on queue 5
[ 165.307319][ C4] nvme nvme0: invalid id 0 completed on queue 5
[ 193.539269][ T154] nvme nvme0: I/O 392 QID 2 timeout, aborting
[ 193.588563][ C6] nvme nvme0: Abort status: 0x0
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