Warning: Permanently added '10.128.1.21' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 465.158878][ T37] audit: type=1400 audit(1625659578.838:8): avc: denied { execmem } for pid=8451 comm="syz-executor212" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 721.244638][ T1640] INFO: task syz-executor212:8452 blocked for more than 143 seconds. [ 721.252969][ T1640] Tainted: G W 5.13.0-syzkaller #0 [ 721.259991][ T1640] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.268801][ T1640] task:syz-executor212 state:D stack:27976 pid: 8452 ppid: 8451 flags:0x00004004 [ 721.278178][ T1640] Call Trace: [ 721.281481][ T1640] __schedule+0x934/0x2710 [ 721.286013][ T1640] ? io_schedule_timeout+0x140/0x140 [ 721.291321][ T1640] ? _raw_spin_lock_irqsave+0x41/0x50 [ 721.296717][ T1640] schedule+0xd3/0x270 [ 721.300798][ T1640] io_uring_cancel_generic+0x54d/0x890 [ 721.306479][ T1640] ? __io_uring_free+0x170/0x170 [ 721.311428][ T1640] ? rwlock_bug.part.0+0x90/0x90 [ 721.316458][ T1640] ? finish_wait+0x270/0x270 [ 721.321106][ T1640] ? do_raw_spin_unlock+0x171/0x230 [ 721.326345][ T1640] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 721.332646][ T1640] ? __validate_process_creds+0x20c/0x370 [ 721.338453][ T1640] do_exit+0x28b/0x2a50 [ 721.342671][ T1640] ? lock_release+0x522/0x720 [ 721.347379][ T1640] ? __context_tracking_exit+0xb8/0xe0 [ 721.352849][ T1640] ? do_group_exit+0x29a/0x310 [ 721.357656][ T1640] ? lock_downgrade+0x6e0/0x6e0 [ 721.362525][ T1640] ? mm_update_next_owner+0x7a0/0x7a0 [ 721.367928][ T1640] ? signal_wake_up_state+0x4e/0x60 [ 721.373134][ T1640] do_group_exit+0x125/0x310 [ 721.377759][ T1640] __x64_sys_exit_group+0x3a/0x50 [ 721.382801][ T1640] do_syscall_64+0x35/0xb0 [ 721.387357][ T1640] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 721.393267][ T1640] RIP: 0033:0x43eac9 [ 721.397378][ T1640] RSP: 002b:00007ffd5a588ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 721.405972][ T1640] RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043eac9 [ 721.413967][ T1640] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 721.422115][ T1640] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 00000000f0ffffff [ 721.430165][ T1640] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b02f0 [ 721.438227][ T1640] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 721.446560][ T1640] INFO: lockdep is turned off. [ 721.451527][ T1640] NMI backtrace for cpu 1 [ 721.455913][ T1640] CPU: 1 PID: 1640 Comm: khungtaskd Tainted: G W 5.13.0-syzkaller #0 [ 721.465325][ T1640] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 721.475368][ T1640] Call Trace: [ 721.478651][ T1640] dump_stack_lvl+0xcd/0x134 [ 721.483386][ T1640] nmi_cpu_backtrace.cold+0x44/0xd7 [ 721.488581][ T1640] ? lapic_can_unplug_cpu+0x80/0x80 [ 721.493884][ T1640] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 721.499922][ T1640] watchdog+0xd4b/0xfb0 [ 721.504104][ T1640] ? reset_hung_task_detector+0x30/0x30 [ 721.509679][ T1640] kthread+0x3e5/0x4d0 [ 721.513773][ T1640] ? set_kthread_struct+0x130/0x130 [ 721.518987][ T1640] ret_from_fork+0x1f/0x30 [ 721.523694][ T1640] Sending NMI from CPU 1 to CPUs 0: [ 721.529722][ C0] NMI backtrace for cpu 0 [ 721.529734][ C0] CPU: 0 PID: 5 Comm: kworker/0:0 Tainted: G W 5.13.0-syzkaller #0 [ 721.529744][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 721.529755][ C0] Workqueue: events_power_efficient toggle_allocation_gate [ 721.529768][ C0] RIP: 0010:insn_get_sib+0x28f/0x330 [ 721.529779][ C0] Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 7a c6 43 2d 01 e9 49 fe ff ff 0c cc 83 fd 48 89 df e8 24 f4 ff ff 31 ff 41 89 c4 89 c6 e8 a8 [ 721.529795][ C0] RSP: 0018:ffffc90000ebf9c0 EFLAGS: 00000246 [ 721.529807][ C0] RAX: 0000000000000000 RBX: ffffc90000ebfa68 RCX: ffff8880126b6140 [ 721.529816][ C0] RDX: 0000000000000000 RSI: ffff8880126b6140 RDI: 0000000000000003 [ 721.529825][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 721.529835][ C0] R10: ffffffff83f0f0bd R11: 0000000000000000 R12: 0000000000000000 [ 721.529844][ C0] R13: ffffffff81b9a17a R14: 0000000000000000 R15: 0000000000000000 [ 721.529853][ C0] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 721.529863][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 721.529871][ C0] CR2: 00007fe2661d7000 CR3: 000000000be8e000 CR4: 00000000001506f0 [ 721.529880][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 721.529889][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 721.529896][ C0] Call Trace: [ 721.529902][ C0] insn_get_displacement+0x31c/0x660 [ 721.529908][ C0] ? kmem_cache_alloc_node+0x13b/0x590 [ 721.529915][ C0] ? kmem_cache_alloc_node+0x14a/0x590 [ 721.529921][ C0] insn_decode+0x473/0x4e0 [ 721.529927][ C0] ? kmem_cache_alloc_node+0x13b/0x590 [ 721.529934][ C0] arch_jump_entry_size+0xa0/0x110 [ 721.529941][ C0] ? arch_jump_entry_size.part.0+0x10/0x10 [ 721.529949][ C0] ? arch_jump_label_transform_queue+0x58/0x100 [ 721.529957][ C0] ? kmem_cache_alloc_node+0x13b/0x590 [ 721.529964][ C0] ? kmem_cache_alloc_node+0x14a/0x590 [ 721.529971][ C0] ? kmem_cache_alloc_node+0x13b/0x590 [ 721.529978][ C0] ? __mutex_lock+0x5bf/0x10a0 [ 721.529985][ C0] ? kmem_cache_alloc_node+0x264/0x590 [ 721.529992][ C0] __jump_label_patch+0x7c/0x1b0 [ 721.529999][ C0] arch_jump_label_transform_queue+0x63/0x100 [ 721.530007][ C0] ? lock_release+0x522/0x720 [ 721.530013][ C0] __jump_label_update+0x12e/0x400 [ 721.530020][ C0] jump_label_update+0x1d5/0x430 [ 721.530027][ C0] static_key_disable_cpuslocked+0x152/0x1b0 [ 721.530034][ C0] static_key_disable+0x16/0x20 [ 721.530047][ C0] toggle_allocation_gate+0x185/0x390 [ 721.530054][ C0] ? lock_release+0x720/0x720 [ 721.530061][ C0] ? wake_up_kfence_timer+0x20/0x20 [ 721.530068][ C0] ? read_word_at_a_time+0xe/0x20 [ 721.530074][ C0] ? strscpy+0xa1/0x2b0 [ 721.530081][ C0] process_one_work+0x98d/0x1630 [ 721.530088][ C0] ? pwq_dec_nr_in_flight+0x320/0x320 [ 721.530094][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 721.530101][ C0] worker_thread+0x658/0x11f0 [ 721.530108][ C0] ? process_one_work+0x1630/0x1630 [ 721.530114][ C0] kthread+0x3e5/0x4d0 [ 721.530121][ C0] ? set_kthread_struct+0x130/0x130 [ 721.530127][ C0] ret_from_fork+0x1f/0x30 [ 721.530174][ T1640] Kernel panic - not syncing: hung_task: blocked tasks [ 721.851637][ T1640] CPU: 1 PID: 1640 Comm: khungtaskd Tainted: G W 5.13.0-syzkaller #0 [ 721.861224][ T1640] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 721.871285][ T1640] Call Trace: [ 721.874567][ T1640] dump_stack_lvl+0xcd/0x134 [ 721.879196][ T1640] panic+0x306/0x73d [ 721.883132][ T1640] ? __warn_printk+0xf3/0xf3 [ 721.887720][ T1640] ? lapic_can_unplug_cpu+0x80/0x80 [ 721.892925][ T1640] ? preempt_schedule_thunk+0x16/0x18 [ 721.898326][ T1640] ? nmi_trigger_cpumask_backtrace+0x196/0x230 [ 721.904512][ T1640] ? watchdog.cold+0x5/0x158 [ 721.909159][ T1640] watchdog.cold+0x16/0x158 [ 721.913670][ T1640] ? reset_hung_task_detector+0x30/0x30 [ 721.919228][ T1640] kthread+0x3e5/0x4d0 [ 721.923313][ T1640] ? set_kthread_struct+0x130/0x130 [ 721.928518][ T1640] ret_from_fork+0x1f/0x30 [ 721.933915][ T1640] Kernel Offset: disabled [ 721.938229][ T1640] Rebooting in 86400 seconds..