INFO: task hung in vm_unmap

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	INFO: task hung in vm_unmap_aliases				1	1558d	1558d	0/1	auto-closed as invalid on 2020/12/16 01:07
linux-4.14	INFO: task hung in vm_unmap_aliases				1	1677d	1677d	0/1	auto-closed as invalid on 2020/08/18 18:15

INFO: task kworker/0:0:31967 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:0 D29096 31967 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task kworker/1:1:2791 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:1 D27456 2791 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/1:0:9308 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:0 D25368 9308 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/0:2:12166 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:2 D26120 12166 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/1:2:12413 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:2 D27456 12413 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 Bluetooth: hci0: command 0x0406 tx timeout schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/1:3:14401 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:3 D29104 14401 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/0:3:15097 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:3 D29240 15097 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/1:4:15412 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:4 D29240 15412 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/1:5:15413 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:5 D25368 15413 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/0:5:15825 blocked for more than 140 seconds. Not tainted 4.19.204-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:5 D29240 15825 2 0x80000000 Workqueue: events bpf_prog_free_deferred Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1015 [inline] __mutex_lock+0x604/0x1200 kernel/locking/mutex.c:1083 vm_unmap_aliases mm/vmalloc.c:1111 [inline] vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 change_page_attr_set_clr+0x247/0xc60 arch/x86/mm/pageattr.c:1497 change_page_attr_set arch/x86/mm/pageattr.c:1553 [inline] set_memory_rw+0x78/0xa0 arch/x86/mm/pageattr.c:1794 bpf_jit_free+0xdd/0x300 bpf_prog_free_deferred+0x2d8/0x410 kernel/bpf/core.c:1814 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 3 locks held by kworker/u4:3/231: 1 lock held by khungtaskd/1570: #0: 000000001da62b2c (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by ion_system_heap/4319: 1 lock held by in:imklog/7861: #0: 000000007ab92a3b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by kworker/0:0/31967: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000071f4f60e ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/1:1/2791: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000f1c5666d ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/1:0/9308: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000fbda531f ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/0:2/12166: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000005ed88885 ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/1:2/12413: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000062162e44 ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/u4:0/12837: #0: 000000008c774630 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000bfc3d310 (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000c95efa55 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:520 3 locks held by kworker/1:3/14401: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000d3b24a98 ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/0:3/15097: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000004858be3b ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/1:4/15412: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000022fd40ff ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/1:5/15413: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000006c299dcf ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/0:5/15825: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000008cdb2bd ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 3 locks held by kworker/1:6/15826: #0: 0000000081bce156 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000cb306781 ((work_completion)(&aux->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases mm/vmalloc.c:1111 [inline] #2: 000000005a35eebf (vmap_purge_lock){+.+.}, at: vm_unmap_aliases+0x3a7/0x510 mm/vmalloc.c:1076 2 locks held by syz-executor.4/16619: 2 locks held by syz-executor.4/16621: 1 lock held by syz-executor.0/16634: 2 locks held by syz-executor.0/16637: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.204-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 16140 Comm: kworker/1:10 Not tainted 4.19.204-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient gc_worker RIP: 0010:check_memory_region+0xb1/0x170 mm/kasan/kasan.c:268 Code: 08 48 39 d0 74 7b 48 83 38 00 74 f1 48 8d 50 08 eb 09 48 83 c0 01 48 39 d0 74 0e 80 38 00 74 f2 48 85 c0 0f 85 9c 00 00 00 5b <5d> 41 5c c3 48 85 d2 74 f6 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 RSP: 0000:ffff888097f07ac0 EFLAGS: 00000046 RAX: ffffed1012fe0f6c RBX: ffffed1012fe0f63 RCX: ffffffff814a9463 RDX: ffffed1012fe0f6c RSI: 0000000000000008 RDI: ffff888097f07b58 RBP: ffffed1012fe0f6b R08: 0000000000000000 R09: ffffed1012fe0f6b R10: ffff888097f07b5f R11: 0000000000000000 R12: 0000000000000008 R13: ffff888097f07b58 R14: 0000000000000002 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3079aa8000 CR3: 000000003c3e5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy+0x20/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:377 [inline] __bpf_trace_lock_acquire+0x193/0x200 include/trace/events/lock.h:13 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x298/0x3c0 kernel/locking/lockdep.c:3907 seqcount_lockdep_reader_access include/linux/seqlock.h:81 [inline] read_seqcount_begin include/linux/seqlock.h:164 [inline] nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:302 [inline] gc_worker+0x24e/0xd90 net/netfilter/nf_conntrack_core.c:1225 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess): 0: 08 48 39 or %cl,0x39(%rax) 3: d0 74 7b 48 shlb 0x48(%rbx,%rdi,2) 7: 83 38 00 cmpl $0x0,(%rax) a: 74 f1 je 0xfffffffd c: 48 8d 50 08 lea 0x8(%rax),%rdx 10: eb 09 jmp 0x1b 12: 48 83 c0 01 add $0x1,%rax 16: 48 39 d0 cmp %rdx,%rax 19: 74 0e je 0x29 1b: 80 38 00 cmpb $0x0,(%rax) 1e: 74 f2 je 0x12 20: 48 85 c0 test %rax,%rax 23: 0f 85 9c 00 00 00 jne 0xc5 29: 5b pop %rbx 2a: 5d pop %rbp <-- trapping instruction 2b: 41 5c pop %r12 2d: c3 retq 2e: 48 85 d2 test %rdx,%rdx 31: 74 f6 je 0x29 33: 48 01 ea add %rbp,%rdx 36: eb 09 jmp 0x41 38: 48 83 c0 01 add $0x1,%rax 3c: 48 39 d0 cmp %rdx,%rax 3f: 74 .byte 0x74