[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.88' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 487.775917][ T35] audit: type=1400 audit(1612571691.081:8): avc: denied { execmem } for pid=8476 comm="syz-executor893" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 721.418212][ T1638] INFO: task syz-executor893:8493 blocked for more than 143 seconds. [ 721.426533][ T1638] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.434616][ T1638] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.443794][ T1638] task:syz-executor893 state:D stack:28144 pid: 8493 ppid: 8480 flags:0x00000004 [ 721.453256][ T1638] Call Trace: [ 721.456611][ T1638] __schedule+0x90c/0x21a0 [ 721.461369][ T1638] ? io_schedule_timeout+0x140/0x140 [ 721.466675][ T1638] ? mark_held_locks+0x9f/0xe0 [ 721.471598][ T1638] ? rwlock_bug.part.0+0x90/0x90 [ 721.476566][ T1638] schedule+0xcf/0x270 [ 721.480699][ T1638] io_uring_cancel_task_requests+0xe70/0x11a0 [ 721.487421][ T1638] ? io_ring_exit_work+0x6d0/0x6d0 [ 721.492631][ T1638] ? xa_find+0x1fb/0x320 [ 721.496976][ T1638] ? finish_wait+0x260/0x260 [ 721.501681][ T1638] __io_uring_files_cancel+0x110/0x1b0 [ 721.507162][ T1638] ? __io_uring_free+0x1d0/0x1d0 [ 721.512176][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.518571][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.524861][ T1638] ? __validate_process_creds+0x20c/0x370 [ 721.530775][ T1638] do_exit+0x2fe/0x2ae0 [ 721.534985][ T1638] ? __up_read+0x1a1/0x7b0 [ 721.539468][ T1638] ? mm_update_next_owner+0x7a0/0x7a0 [ 721.544876][ T1638] do_group_exit+0x125/0x310 [ 721.550567][ T1638] __x64_sys_exit_group+0x3a/0x50 [ 721.555670][ T1638] do_syscall_64+0x2d/0x70 [ 721.560780][ T1638] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 721.566761][ T1638] RIP: 0033:0x43eb19 [ 721.570929][ T1638] RSP: 002b:00007ffda99d64d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 721.579414][ T1638] RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043eb19 [ 721.587415][ T1638] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 721.595496][ T1638] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000010000000 [ 721.603597][ T1638] R10: 0000000000008011 R11: 0000000000000246 R12: 00000000004b02f0 [ 721.611662][ T1638] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 721.619767][ T1638] INFO: task syz-executor893:8571 blocked for more than 143 seconds. [ 721.627836][ T1638] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.633807][ T1638] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.642552][ T1638] task:syz-executor893 state:D stack:28144 pid: 8571 ppid: 8479 flags:0x00004004 [ 721.652575][ T1638] Call Trace: [ 721.655886][ T1638] __schedule+0x90c/0x21a0 [ 721.660493][ T1638] ? io_schedule_timeout+0x140/0x140 [ 721.665803][ T1638] ? mark_held_locks+0x9f/0xe0 [ 721.670652][ T1638] ? rwlock_bug.part.0+0x90/0x90 [ 721.675631][ T1638] schedule+0xcf/0x270 [ 721.680746][ T1638] io_uring_cancel_task_requests+0xe70/0x11a0 [ 721.686857][ T1638] ? io_ring_exit_work+0x6d0/0x6d0 [ 721.692550][ T1638] ? xa_find+0x1fb/0x320 [ 721.696825][ T1638] ? finish_wait+0x260/0x260 [ 721.701552][ T1638] __io_uring_files_cancel+0x110/0x1b0 [ 721.707041][ T1638] ? __io_uring_free+0x1d0/0x1d0 [ 721.712050][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.718391][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.724641][ T1638] ? __validate_process_creds+0x20c/0x370 [ 721.730412][ T1638] do_exit+0x2fe/0x2ae0 [ 721.734595][ T1638] ? __up_read+0x1a1/0x7b0 [ 721.739096][ T1638] ? mm_update_next_owner+0x7a0/0x7a0 [ 721.744508][ T1638] do_group_exit+0x125/0x310 [ 721.749159][ T1638] __x64_sys_exit_group+0x3a/0x50 [ 721.754202][ T1638] do_syscall_64+0x2d/0x70 [ 721.758698][ T1638] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 721.764618][ T1638] RIP: 0033:0x43eb19 [ 721.768626][ T1638] RSP: 002b:00007ffda99d64d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 721.777070][ T1638] RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043eb19 [ 721.785468][ T1638] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 721.793652][ T1638] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000010000000 [ 721.801746][ T1638] R10: 0000000000008011 R11: 0000000000000246 R12: 00000000004b02f0 [ 721.810361][ T1638] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 721.818983][ T1638] INFO: task syz-executor893:8579 blocked for more than 143 seconds. [ 721.827078][ T1638] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.833064][ T1638] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.841808][ T1638] task:syz-executor893 state:D stack:28144 pid: 8579 ppid: 8482 flags:0x00004004 [ 721.851089][ T1638] Call Trace: [ 721.854377][ T1638] __schedule+0x90c/0x21a0 [ 721.858874][ T1638] ? io_schedule_timeout+0x140/0x140 [ 721.864203][ T1638] ? mark_held_locks+0x9f/0xe0 [ 721.869202][ T1638] ? rwlock_bug.part.0+0x90/0x90 [ 721.874179][ T1638] schedule+0xcf/0x270 [ 721.878315][ T1638] io_uring_cancel_task_requests+0xe70/0x11a0 [ 721.884410][ T1638] ? io_ring_exit_work+0x6d0/0x6d0 [ 721.889601][ T1638] ? xa_find+0x1fb/0x320 [ 721.893861][ T1638] ? finish_wait+0x260/0x260 [ 721.898562][ T1638] __io_uring_files_cancel+0x110/0x1b0 [ 721.904104][ T1638] ? __io_uring_free+0x1d0/0x1d0 [ 721.909132][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.915401][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.921708][ T1638] ? __validate_process_creds+0x20c/0x370 [ 721.927455][ T1638] do_exit+0x2fe/0x2ae0 [ 721.931744][ T1638] ? __up_read+0x1a1/0x7b0 [ 721.936191][ T1638] ? mm_update_next_owner+0x7a0/0x7a0 [ 721.942654][ T1638] do_group_exit+0x125/0x310 [ 721.947287][ T1638] __x64_sys_exit_group+0x3a/0x50 [ 721.952919][ T1638] do_syscall_64+0x2d/0x70 [ 721.957367][ T1638] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 721.963367][ T1638] RIP: 0033:0x43eb19 [ 721.967268][ T1638] RSP: 002b:00007ffda99d64d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 721.975794][ T1638] RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043eb19 [ 721.983852][ T1638] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 721.992078][ T1638] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000010000000 [ 722.000143][ T1638] R10: 0000000000008011 R11: 0000000000000246 R12: 00000000004b02f0 [ 722.008188][ T1638] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 722.016212][ T1638] INFO: task syz-executor893:8591 blocked for more than 143 seconds. [ 722.024359][ T1638] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.030319][ T1638] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.039061][ T1638] task:syz-executor893 state:D stack:28144 pid: 8591 ppid: 8481 flags:0x00000004 [ 722.048364][ T1638] Call Trace: [ 722.051652][ T1638] __schedule+0x90c/0x21a0 [ 722.056067][ T1638] ? io_schedule_timeout+0x140/0x140 [ 722.061656][ T1638] ? mark_held_locks+0x9f/0xe0 [ 722.066502][ T1638] ? rwlock_bug.part.0+0x90/0x90 [ 722.072584][ T1638] schedule+0xcf/0x270 [ 722.076721][ T1638] io_uring_cancel_task_requests+0xe70/0x11a0 [ 722.083799][ T1638] ? io_ring_exit_work+0x6d0/0x6d0 [ 722.089049][ T1638] ? xa_find+0x1fb/0x320 [ 722.093561][ T1638] ? finish_wait+0x260/0x260 [ 722.098354][ T1638] __io_uring_files_cancel+0x110/0x1b0 [ 722.103845][ T1638] ? __io_uring_free+0x1d0/0x1d0 [ 722.108952][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 722.115314][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 722.121622][ T1638] ? __validate_process_creds+0x20c/0x370 [ 722.127378][ T1638] do_exit+0x2fe/0x2ae0 [ 722.131900][ T1638] ? __up_read+0x1a1/0x7b0 [ 722.136358][ T1638] ? mm_update_next_owner+0x7a0/0x7a0 [ 722.141864][ T1638] do_group_exit+0x125/0x310 [ 722.147186][ T1638] __x64_sys_exit_group+0x3a/0x50 [ 722.152285][ T1638] do_syscall_64+0x2d/0x70 [ 722.166713][ T1638] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.172682][ T1638] RIP: 0033:0x43eb19 [ 722.176586][ T1638] RSP: 002b:00007ffda99d64d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 722.185598][ T1638] RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043eb19 [ 722.194366][ T1638] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 722.203463][ T1638] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000010000000 [ 722.212056][ T1638] R10: 0000000000008011 R11: 0000000000000246 R12: 00000000004b02f0 [ 722.220152][ T1638] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 722.228704][ T1638] INFO: task syz-executor893:8624 blocked for more than 144 seconds. [ 722.242702][ T1638] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.249192][ T1638] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.260273][ T1638] task:syz-executor893 state:D stack:28144 pid: 8624 ppid: 8477 flags:0x00004004 [ 722.269558][ T1638] Call Trace: [ 722.272864][ T1638] __schedule+0x90c/0x21a0 [ 722.277460][ T1638] ? io_schedule_timeout+0x140/0x140 [ 722.282829][ T1638] ? mark_held_locks+0x9f/0xe0 [ 722.287651][ T1638] ? rwlock_bug.part.0+0x90/0x90 [ 722.293366][ T1638] schedule+0xcf/0x270 [ 722.297630][ T1638] io_uring_cancel_task_requests+0xe70/0x11a0 [ 722.303786][ T1638] ? io_ring_exit_work+0x6d0/0x6d0 [ 722.308975][ T1638] ? xa_find+0x1fb/0x320 [ 722.313931][ T1638] ? finish_wait+0x260/0x260 [ 722.318610][ T1638] __io_uring_files_cancel+0x110/0x1b0 [ 722.324179][ T1638] ? __io_uring_free+0x1d0/0x1d0 [ 722.330155][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 722.336587][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 722.343498][ T1638] ? __validate_process_creds+0x20c/0x370 [ 722.349353][ T1638] do_exit+0x2fe/0x2ae0 [ 722.353677][ T1638] ? __up_read+0x1a1/0x7b0 [ 722.358198][ T1638] ? mm_update_next_owner+0x7a0/0x7a0 [ 722.363615][ T1638] do_group_exit+0x125/0x310 [ 722.368410][ T1638] __x64_sys_exit_group+0x3a/0x50 [ 722.373460][ T1638] do_syscall_64+0x2d/0x70 [ 722.377875][ T1638] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.383859][ T1638] RIP: 0033:0x43eb19 [ 722.387751][ T1638] RSP: 002b:00007ffda99d64d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 722.396325][ T1638] RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043eb19 [ 722.404461][ T1638] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 722.412968][ T1638] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000010000000 [ 722.421030][ T1638] R10: 0000000000008011 R11: 0000000000000246 R12: 00000000004b02f0 [ 722.429091][ T1638] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 722.444042][ T1638] INFO: task syz-executor893:8633 blocked for more than 144 seconds. [ 722.452915][ T1638] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.460003][ T1638] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.470574][ T1638] task:syz-executor893 state:D stack:27648 pid: 8633 ppid: 8478 flags:0x00004004 [ 722.480019][ T1638] Call Trace: [ 722.483314][ T1638] __schedule+0x90c/0x21a0 [ 722.487739][ T1638] ? io_schedule_timeout+0x140/0x140 [ 722.493101][ T1638] ? mark_held_locks+0x9f/0xe0 [ 722.497956][ T1638] ? rwlock_bug.part.0+0x90/0x90 [ 722.502923][ T1638] schedule+0xcf/0x270 [ 722.506989][ T1638] io_uring_cancel_task_requests+0xe70/0x11a0 [ 722.513165][ T1638] ? io_ring_exit_work+0x6d0/0x6d0 [ 722.518356][ T1638] ? xa_find+0x1fb/0x320 [ 722.522612][ T1638] ? finish_wait+0x260/0x260 [ 722.527225][ T1638] __io_uring_files_cancel+0x110/0x1b0 [ 722.532753][ T1638] ? __io_uring_free+0x1d0/0x1d0 [ 722.537717][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 722.544028][ T1638] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 722.550384][ T1638] ? __validate_process_creds+0x20c/0x370 [ 722.556122][ T1638] do_exit+0x2fe/0x2ae0 [ 722.560322][ T1638] ? __up_read+0x1a1/0x7b0 [ 722.564757][ T1638] ? mm_update_next_owner+0x7a0/0x7a0 [ 722.570238][ T1638] do_group_exit+0x125/0x310 [ 722.574838][ T1638] __x64_sys_exit_group+0x3a/0x50 [ 722.579919][ T1638] do_syscall_64+0x2d/0x70 [ 722.584352][ T1638] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.591288][ T1638] RIP: 0033:0x43eb19 [ 722.595222][ T1638] RSP: 002b:00007ffda99d64d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 722.604299][ T1638] RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043eb19 [ 722.612426][ T1638] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 722.620632][ T1638] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000010000000 [ 722.628669][ T1638] R10: 0000000000008011 R11: 0000000000000246 R12: 00000000004b02f0 [ 722.636824][ T1638] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 722.644910][ T1638] [ 722.644910][ T1638] Showing all locks held in the system: [ 722.652721][ T1638] 1 lock held by khungtaskd/1638: [ 722.657746][ T1638] #0: ffffffff8bd73da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 722.667805][ T1638] 2 locks held by in:imklog/8193: [ 722.672928][ T1638] #0: ffff888019c15bb0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 722.682209][ T1638] #1: ffffffff8bd73da0 (rcu_read_lock){....}-{1:2}, at: is_bpf_text_address+0x0/0x160 [ 722.692093][ T1638] 1 lock held by syz-executor893/8493: [ 722.697650][ T1638] #0: ffff88801362dc70 (&sqd->lock){+.+.}-{3:3}, at: io_uring_cancel_task_requests+0x311/0x11a0 [ 722.708586][ T1638] 1 lock held by syz-executor893/8571: [ 722.714083][ T1638] #0: ffff8880232b3470 (&sqd->lock){+.+.}-{3:3}, at: io_uring_cancel_task_requests+0x311/0x11a0 [ 722.725731][ T1638] 1 lock held by syz-executor893/8579: [ 722.731823][ T1638] #0: ffff888014271070 (&sqd->lock){+.+.}-{3:3}, at: io_uring_cancel_task_requests+0x311/0x11a0 [ 722.743076][ T1638] 1 lock held by syz-executor893/8591: [ 722.748717][ T1638] #0: ffff8880195b2470 (&sqd->lock){+.+.}-{3:3}, at: io_uring_cancel_task_requests+0x311/0x11a0 [ 722.759524][ T1638] 1 lock held by syz-executor893/8624: [ 722.765005][ T1638] #0: ffff8880161a4870 (&sqd->lock){+.+.}-{3:3}, at: io_uring_cancel_task_requests+0x311/0x11a0 [ 722.775619][ T1638] 1 lock held by syz-executor893/8633: [ 722.781148][ T1638] #0: ffff888025448c70 (&sqd->lock){+.+.}-{3:3}, at: io_uring_cancel_task_requests+0x311/0x11a0 [ 722.791824][ T1638] [ 722.794146][ T1638] ============================================= [ 722.794146][ T1638] [ 722.802669][ T1638] NMI backtrace for cpu 0 [ 722.807010][ T1638] CPU: 0 PID: 1638 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 722.815326][ T1638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.825375][ T1638] Call Trace: [ 722.828647][ T1638] dump_stack+0x107/0x163 [ 722.833035][ T1638] nmi_cpu_backtrace.cold+0x44/0xd7 [ 722.838225][ T1638] ? lapic_can_unplug_cpu+0x80/0x80 [ 722.843479][ T1638] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 722.849486][ T1638] watchdog+0xd43/0xfa0 [ 722.853638][ T1638] ? reset_hung_task_detector+0x30/0x30 [ 722.859175][ T1638] kthread+0x3b1/0x4a0 [ 722.863245][ T1638] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 722.869138][ T1638] ret_from_fork+0x1f/0x30 [ 722.873790][ T1638] Sending NMI from CPU 0 to CPUs 1: [ 722.879896][ C1] NMI backtrace for cpu 1 [ 722.879906][ C1] CPU: 1 PID: 4885 Comm: systemd-journal Not tainted 5.11.0-rc6-syzkaller #0 [ 722.879916][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.879925][ C1] RIP: 0010:bpf_ksym_find+0x6a/0x1c0 [ 722.879936][ C1] Code: 68 ff ff ff 48 89 ef 4c 89 fe e8 41 66 f4 ff 4c 39 fd 0f 83 e9 00 00 00 e8 c3 5e f4 ff 8b 1d ad 7e 22 0a 44 8b 74 24 04 89 de <44> 89 f7 e8 ae 65 f4 ff 41 39 de 0f 84 e3 00 00 00 e8 a0 5e f4 ff [ 722.879952][ C1] RSP: 0018:ffffc90001207aa0 EFLAGS: 00000093 [ 722.879964][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 722.879973][ C1] RDX: ffff888015d6a200 RSI: 0000000000000000 RDI: ffffffff8ba0f3b0 [ 722.879981][ C1] RBP: 00007fb450c54840 R08: 0000000000000000 R09: 0000000000000001 [ 722.879990][ C1] R10: ffffffff817ec8c7 R11: 0000000000000000 R12: 0000000000000000 [ 722.879998][ C1] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000200 [ 722.880007][ C1] FS: 00007fb4516c58c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 722.880016][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 722.880024][ C1] CR2: 00007fb44eab7000 CR3: 0000000015593000 CR4: 00000000001506e0 [ 722.880032][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 722.880041][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 722.880048][ C1] Call Trace: [ 722.880053][ C1] is_bpf_text_address+0x75/0x160 [ 722.880057][ C1] kernel_text_address+0xbd/0xf0 [ 722.880062][ C1] __kernel_text_address+0x9/0x30 [ 722.880067][ C1] unwind_get_return_address+0x51/0x90 [ 722.880072][ C1] ? create_prof_cpu_mask+0x20/0x20 [ 722.880077][ C1] arch_stack_walk+0x93/0xe0 [ 722.880082][ C1] ? get_max_files+0x10/0x10 [ 722.880086][ C1] stack_trace_save+0x8c/0xc0 [ 722.880091][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 722.880096][ C1] kasan_save_stack+0x1b/0x40 [ 722.880101][ C1] ? kasan_save_stack+0x1b/0x40 [ 722.880106][ C1] ? kasan_record_aux_stack+0x87/0xb0 [ 722.880111][ C1] ? call_rcu+0xbb/0x700 [ 722.880115][ C1] ? task_work_run+0xdd/0x190 [ 722.880120][ C1] ? exit_to_user_mode_prepare+0x249/0x250 [ 722.880125][ C1] ? syscall_exit_to_user_mode+0x19/0x50 [ 722.880131][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.880137][ C1] ? debug_object_active_state+0x260/0x350 [ 722.880142][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 722.880152][ C1] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 722.880157][ C1] ? lockdep_hardirqs_on+0x79/0x100 [ 722.880162][ C1] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 722.880167][ C1] ? debug_object_active_state+0x260/0x350 [ 722.880174][ C1] ? debug_object_init_on_stack+0x20/0x20 [ 722.880179][ C1] ? call_rcu+0x312/0x700 [ 722.880183][ C1] ? get_max_files+0x10/0x10 [ 722.880189][ C1] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 722.880194][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 722.880200][ C1] ? __phys_addr+0xc4/0x140 [ 722.880204][ C1] ? get_max_files+0x10/0x10 [ 722.880209][ C1] kasan_record_aux_stack+0x87/0xb0 [ 722.880214][ C1] call_rcu+0xbb/0x700 [ 722.880218][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 722.880223][ C1] task_work_run+0xdd/0x190 [ 722.880228][ C1] exit_to_user_mode_prepare+0x249/0x250 [ 722.880233][ C1] syscall_exit_to_user_mode+0x19/0x50 [ 722.880239][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.880244][ C1] RIP: 0033:0x7fb450c54840 [ 722.880252][ C1] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 [ 722.880266][ C1] RSP: 002b:00007ffd66c13138 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 722.880278][ C1] RAX: fffffffffffffffe RBX: 00007ffd66c13440 RCX: 00007fb450c54840 [ 722.880285][ C1] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055b07430c150 [ 722.880292][ C1] RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff [ 722.880300][ C1] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff [ 722.880307][ C1] R13: 000055b0742fe060 R14: 00007ffd66c13400 R15: 000055b07430c1a0 [ 722.881337][ T1638] Kernel panic - not syncing: hung_task: blocked tasks [ 723.286802][ T1638] CPU: 0 PID: 1638 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 723.295116][ T1638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 723.305159][ T1638] Call Trace: [ 723.308449][ T1638] dump_stack+0x107/0x163 [ 723.312793][ T1638] panic+0x306/0x73d [ 723.316697][ T1638] ? __warn_printk+0xf3/0xf3 [ 723.321284][ T1638] ? lapic_can_unplug_cpu+0x80/0x80 [ 723.326469][ T1638] ? preempt_schedule_thunk+0x16/0x18 [ 723.331840][ T1638] ? nmi_trigger_cpumask_backtrace+0x196/0x230 [ 723.337987][ T1638] ? watchdog.cold+0x5/0x158 [ 723.342627][ T1638] watchdog.cold+0x16/0x158 [ 723.347121][ T1638] ? reset_hung_task_detector+0x30/0x30 [ 723.352666][ T1638] kthread+0x3b1/0x4a0 [ 723.356733][ T1638] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 723.362613][ T1638] ret_from_fork+0x1f/0x30 [ 723.367767][ T1638] Kernel Offset: disabled [ 723.372093][ T1638] Rebooting in 86400 seconds..