Warning: Permanently added '10.128.0.29' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 91.680276][ T6845] ------------[ cut here ]------------ [ 91.681751][ T17] ------------[ cut here ]------------ [ 91.685780][ T6845] WARNING: CPU: 0 PID: 6845 at kernel/rcu/tree.c:1045 rcu_irq_enter+0x15/0x20 [ 91.691216][ T17] WARNING: CPU: 1 PID: 17 at kernel/rcu/tree.c:760 rcu_irq_exit+0x15/0x20 [ 91.700022][ T6845] Kernel panic - not syncing: panic_on_warn set ... [ 91.708491][ T17] Modules linked in: [ 91.715057][ T6845] CPU: 0 PID: 6845 Comm: syz-executor826 Not tainted 5.8.0-rc6-next-20200720-syzkaller #0 [ 91.715078][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.8.0-rc6-next-20200720-syzkaller #0 [ 91.718943][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.728802][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.738138][ T6845] Call Trace: [ 91.748184][ T17] Workqueue: events pwq_unbound_release_workfn [ 91.758231][ T6845] dump_stack+0x18f/0x20d [ 91.767618][ T6845] panic+0x2e3/0x75c [ 91.771922][ T17] RIP: 0010:rcu_irq_exit+0x15/0x20 [ 91.775799][ T6845] ? __warn_printk+0xf3/0xf3 [ 91.780883][ T17] Code: 11 fd ff ff 5b 5d c3 0f 0b e9 7c ff ff ff 0f 0b eb 91 0f 1f 00 8b 05 46 7e cd 02 85 c0 74 0d 65 8b 05 7b 67 16 78 85 c0 74 02 <0f> 0b e9 34 ff ff ff 0f 1f 40 00 41 54 55 48 c7 c5 00 6c 03 00 53 [ 91.785450][ T6845] ? printk+0xba/0xed [ 91.805041][ T17] RSP: 0018:ffffc90000d8faf8 EFLAGS: 00010002 [ 91.809014][ T6845] ? log_store.cold+0x16/0x16 [ 91.809037][ T6845] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 91.815083][ T17] RAX: 0000000000000001 RBX: 0000000000000086 RCX: ffffffff817a03c7 [ 91.819748][ T6845] ? __warn.cold+0x5/0x45 [ 91.825807][ T17] RDX: ffff8880a964c480 RSI: ffffffff81620a51 RDI: 0000000000000005 [ 91.834032][ T6845] ? __warn+0xd6/0x1f2 [ 91.839195][ T17] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880ae736ce3 [ 91.847165][ T6845] ? rcu_irq_enter+0x15/0x20 [ 91.851208][ T17] R10: 0000000000000000 R11: 0000000000000178 R12: dffffc0000000000 [ 91.859253][ T6845] __warn.cold+0x20/0x45 [ 91.863819][ T17] R13: ffffffff87ee2656 R14: 0000000000000000 R15: ffffffff89c52a40 [ 91.871775][ T6845] ? rcu_irq_enter+0x15/0x20 [ 91.875986][ T17] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 91.884035][ T6845] report_bug+0x1bd/0x210 [ 91.888593][ T17] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.897517][ T6845] handle_bug+0x38/0x90 [ 91.901815][ T17] CR2: 00000000006cb0a0 CR3: 0000000009a79000 CR4: 00000000001506e0 [ 91.908383][ T6845] exc_invalid_op+0x14/0x40 [ 91.912688][ T17] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.920649][ T6845] asm_exc_invalid_op+0x12/0x20 [ 91.925113][ T17] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.933072][ T6845] RIP: 0010:rcu_irq_enter+0x15/0x20 [ 91.937884][ T17] Call Trace: [ 91.945841][ T6845] Code: 00 00 00 4c 89 e7 e8 6a 39 c8 f9 eb b4 0f 0b eb 8b 0f 1f 40 00 8b 05 86 7d cd 02 85 c0 74 0d 65 8b 05 bb 66 16 78 85 c0 74 02 <0f> 0b e9 44 ff ff ff cc cc cc cc 0f 1f 44 00 00 48 8b 05 c4 8f da [ 91.951155][ T17] rcu_irq_exit_irqson+0x76/0x140 [ 91.954412][ T6845] RSP: 0018:ffffc900016075e0 EFLAGS: 00010002 [ 91.974639][ T17] trace_hardirqs_off+0x197/0x210 [ 91.985680][ T17] _raw_spin_lock_irqsave+0x66/0xc0 [ 91.990754][ T6845] RAX: 0000000000000001 RBX: 0000000000000086 RCX: ffffffff817a03c7 [ 91.995938][ T17] debug_object_activate+0x12e/0x3e0 [ 92.003882][ T6845] RDX: ffff8880949e8300 RSI: ffffffff81620cd1 RDI: 0000000000000005 [ 92.009155][ T17] ? debug_object_assert_init+0x2e0/0x2e0 [ 92.017109][ T6845] RBP: 0000000000000003 R08: 0000000000000000 R09: ffffffff8ab8f10f [ 92.022822][ T17] ? debug_object_active_state+0x260/0x350 [ 92.030778][ T6845] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000086 [ 92.036573][ T17] ? zap_class+0x42e/0x960 [ 92.044516][ T6845] R13: ffffffff8132f9a8 R14: 0000000000000000 R15: ffff8880ae636b80 [ 92.048921][ T17] ? lockdep_lock+0x280/0x280 [ 92.056890][ T6845] ? kvm_wait+0x88/0x240 [ 92.061541][ T17] call_rcu+0x2c/0x7e0 [ 92.065772][ T6845] ? trace_hardirqs_off+0x27/0x210 [ 92.069815][ T17] ? __lockdep_free_key_range+0x56/0x110 [ 92.074931][ T6845] ? rcu_irq_enter_irqson+0x71/0x140 [ 92.080540][ T17] lockdep_unregister_key+0x21d/0x570 [ 92.085811][ T6845] rcu_irq_enter_irqson+0x76/0x140 [ 92.091693][ T17] pwq_unbound_release_workfn+0x227/0x2d0 [ 92.096784][ T6845] trace_hardirqs_off+0x114/0x210 [ 92.102479][ T17] process_one_work+0x94c/0x1670 [ 92.107495][ T6845] kvm_wait+0x88/0x240 [ 92.112616][ T17] ? lock_release+0x8e0/0x8e0 [ 92.116665][ T6845] __pv_queued_spin_lock_slowpath+0x896/0xaf0 [ 92.121319][ T17] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 92.127351][ T6845] ? pv_hash+0xe0/0xe0 [ 92.132701][ T17] ? rwlock_bug.part.0+0x90/0x90 [ 92.136763][ T6845] ? lock_release+0x8e0/0x8e0 [ 92.141673][ T17] ? trace_hardirqs_off+0x27/0x210 [ 92.146323][ T6845] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 92.151408][ T17] worker_thread+0x64c/0x1120 [ 92.157278][ T6845] ? lock_downgrade+0x830/0x830 [ 92.161927][ T17] ? process_one_work+0x1670/0x1670 [ 92.166751][ T6845] lockdep_lock+0x214/0x280 [ 92.171923][ T17] kthread+0x3b5/0x4a0 [ 92.176400][ T6845] ? lock_repin_lock+0x460/0x460 [ 92.180442][ T17] ? __kthread_bind_mask+0xc0/0xc0 [ 92.185456][ T6845] ? is_dynamic_key+0x136/0x1a0 [ 92.190626][ T17] ? __kthread_bind_mask+0xc0/0xc0 [ 92.195477][ T6845] register_lock_class+0x4f9/0x1630 [ 92.200566][ T17] ret_from_fork+0x1f/0x30 [ 92.206172][ T6845] ? is_dynamic_key+0x1a0/0x1a0 [ 92.210554][ T17] irq event stamp: 77675 [ 92.215392][ T6845] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 92.219625][ T17] hardirqs last enabled at (77675): [] call_rcu+0x360/0x7e0 [ 92.225602][ T6845] ? mark_lock+0xbc/0x1710 [ 92.235468][ T17] hardirqs last disabled at (77674): [] call_rcu+0x140/0x7e0 [ 92.239865][ T6845] __lock_acquire+0x100/0x5650 [ 92.248799][ T17] softirqs last enabled at (77486): [] rxrpc_peer_keepalive_worker+0x7f3/0xc42 [ 92.253540][ T6845] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 92.264315][ T17] softirqs last disabled at (77484): [] rxrpc_peer_keepalive_worker+0x4a4/0xc42 [ 92.270266][ T6845] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 92.280825][ T17] ---[ end trace ce24878027120dda ]--- [ 92.287163][ T6845] lock_acquire+0x1f1/0xad0 [ 92.297192][ T6845] ? flush_workqueue+0xe1/0x13e0 [ 92.302137][ T6845] ? lock_release+0x8e0/0x8e0 [ 92.306833][ T6845] ? lock_release+0x8e0/0x8e0 [ 92.311514][ T6845] ? lockdep_init_map_waits+0x26a/0x8a0 [ 92.317061][ T6845] ? lockdep_init_map_waits+0x26a/0x8a0 [ 92.322612][ T6845] ? __raw_spin_lock_init+0x34/0x100 [ 92.327907][ T6845] flush_workqueue+0x110/0x13e0 [ 92.332775][ T6845] ? flush_workqueue+0xe1/0x13e0 [ 92.337808][ T6845] ? lock_downgrade+0x830/0x830 [ 92.342663][ T6845] ? drain_workqueue+0x24/0x3c0 [ 92.347521][ T6845] ? find_held_lock+0x2d/0x110 [ 92.352287][ T6845] ? max_active_store+0x120/0x120 [ 92.357307][ T6845] ? ucma_close+0x240/0x310 [ 92.361795][ T6845] ? mutex_lock_io_nested+0xf60/0xf60 [ 92.367151][ T6845] drain_workqueue+0x1a5/0x3c0 [ 92.371896][ T6845] ? wait_for_completion+0x260/0x260 [ 92.377200][ T6845] destroy_workqueue+0x71/0x740 executing program [ 92.382032][ T6845] ucma_close+0x265/0x310 [ 92.386350][ T6845] __fput+0x27e/0x8e0 [ 92.390335][ T6845] ? ucma_free_ctx+0xae0/0xae0 [ 92.395097][ T6845] task_work_run+0xdd/0x190 [ 92.399596][ T6845] do_exit+0xb7d/0x29f0 [ 92.403808][ T6845] ? mm_update_next_owner+0x7a0/0x7a0 [ 92.409162][ T6845] ? perf_trace_preemptirq_template+0x290/0x440 [ 92.415393][ T6845] ? hrtimer_interrupt+0x6ea/0x930 [ 92.420497][ T6845] ? tracing_start_sched_switch.cold+0x74/0x74 [ 92.426640][ T6845] ? sched_clock+0x2a/0x40 executing program [ 92.431074][ T6845] do_group_exit+0x125/0x310 [ 92.435648][ T6845] __x64_sys_exit_group+0x3a/0x50 [ 92.440672][ T6845] do_syscall_64+0x60/0xe0 [ 92.445081][ T6845] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 92.450981][ T6845] RIP: 0033:0x440088 [ 92.454855][ T6845] Code: Bad RIP value. [ 92.458915][ T6845] RSP: 002b:00007ffe6ec0f408 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 92.467407][ T6845] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440088 [ 92.475385][ T6845] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 92.483426][ T6845] RBP: 00000000004bf8b0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 92.491483][ T6845] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 92.499502][ T6845] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 92.508672][ T6845] Kernel Offset: disabled [ 92.513013][ T6845] Rebooting in 86400 seconds..