Warning: Permanently added '10.128.0.200' (ED25519) to the list of known hosts. syzkaller login: [ 85.311750][ T5798] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 85.320785][ T51] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 85.332486][ T5806] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 85.337038][ T5804] Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 [ 85.340604][ T5806] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 85.348287][ T5804] Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 [ 85.354396][ T5806] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 85.362011][ T5804] Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 [ 85.368497][ T5806] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 85.384886][ T5806] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 85.392734][ T5806] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 85.400237][ T5807] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 85.408665][ T5806] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 85.416490][ T5807] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 85.423895][ T5806] Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 [ 85.427195][ T5804] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 85.432287][ T5807] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 85.445542][ T5806] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 85.453459][ T5807] Bluetooth: hci2: unexpected cc 0x0c25 length: 249 > 3 [ 85.460902][ T5804] Bluetooth: hci3: unexpected cc 0x0c25 length: 249 > 3 [ 85.461607][ T5806] Bluetooth: hci1: unexpected cc 0x0c25 length: 249 > 3 [ 85.468676][ T5804] Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 [ 85.475408][ T5807] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 85.489609][ T5804] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 executing program [ 190.805960][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 190.813125][ C1] rcu: (detected by 1, t=10502 jiffies, g=9241, q=32 ncpus=2) [ 190.820706][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294956156-4294945654), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 190.834113][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g9241 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 190.845271][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 190.855288][ C1] rcu: RCU grace-period kthread stack dump: [ 190.861219][ C1] task:rcu_preempt state:R running task stack:26568 pid:17 ppid:2 flags:0x00004000 [ 190.872071][ C1] Call Trace: [ 190.875412][ C1] [ 190.878388][ C1] __schedule+0x14d2/0x44d0 [ 190.882978][ C1] ? _raw_spin_unlock_irqrestore+0x86/0x110 [ 190.888916][ C1] ? lockdep_hardirqs_on+0x98/0x150 [ 190.894156][ C1] ? _raw_spin_unlock_irqrestore+0xae/0x110 [ 190.900092][ C1] ? asan.module_dtor+0x20/0x20 [ 190.904989][ C1] ? enqueue_timer+0x225/0x530 [ 190.909799][ C1] ? __mod_timer+0x984/0xdb0 [ 190.914450][ C1] schedule+0xbd/0x170 [ 190.918572][ C1] schedule_timeout+0x160/0x280 [ 190.923467][ C1] ? console_conditional_schedule+0x40/0x40 [ 190.929405][ C1] ? update_process_times+0x1b0/0x1b0 [ 190.934833][ C1] ? prepare_to_swait_event+0x339/0x360 [ 190.940510][ C1] rcu_gp_fqs_loop+0x302/0x1560 [ 190.945417][ C1] ? rcu_gp_init+0x110e/0x1510 [ 190.950238][ C1] ? rcu_gp_kthread+0x380/0x380 [ 190.955157][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 190.961187][ C1] ? rcu_gp_init+0x1510/0x1510 [ 190.965997][ C1] ? rcu_gp_cleanup+0xb4c/0xca0 [ 190.970907][ C1] ? _raw_spin_unlock_irq+0x23/0x50 [ 190.976146][ C1] ? lockdep_hardirqs_on+0x98/0x150 [ 190.981382][ C1] rcu_gp_kthread+0x99/0x380 [ 190.986034][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 190.991198][ C1] ? __kthread_parkme+0x7a/0x1c0 [ 190.996183][ C1] ? __kthread_parkme+0x162/0x1c0 [ 191.001257][ C1] kthread+0x2fa/0x390 [ 191.005361][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 191.010525][ C1] ? kthread_blkcg+0xd0/0xd0 [ 191.015155][ C1] ret_from_fork+0x48/0x80 [ 191.019610][ C1] ? kthread_blkcg+0xd0/0xd0 [ 191.024237][ C1] ret_from_fork_asm+0x11/0x20 [ 191.029057][ C1] [ 191.032122][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 191.038645][ C1] Sending NMI from CPU 1 to CPUs 0: [ 191.043899][ C0] NMI backtrace for cpu 0 [ 191.043920][ C0] CPU: 0 PID: 5813 Comm: syz-executor390 Not tainted syzkaller #0 [ 191.043935][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 191.043945][ C0] RIP: 0010:kasan_check_range+0x4f/0x290 [ 191.043969][ C0] Code: 00 49 89 f9 49 c1 e9 2f 41 81 f9 ff ff 01 00 0f 82 46 02 00 00 49 89 ff 49 c1 ef 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 17 <49> ff c8 4d 89 c1 49 c1 e9 03 48 bb 01 00 00 00 00 fc ff df 4d 8d [ 191.043982][ C0] RSP: 0018:ffffc900000078c8 EFLAGS: 00000802 [ 191.043996][ C0] RAX: 0000000000000001 RBX: 0000000000000067 RCX: ffffffff816703f1 [ 191.044006][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90da8508 [ 191.044027][ C0] RBP: ffffc90000007b48 R08: ffffffff90da8510 R09: 000000000001ffff [ 191.044038][ C0] R10: dffffc0000000000 R11: fffffbfff21b50a1 R12: ffff88802c4b64c4 [ 191.044050][ C0] R13: ffff88802c4b5a00 R14: 0000000000000002 R15: 1ffffffff21b50a1 [ 191.044061][ C0] FS: 00005555630b73c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 [ 191.044074][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 191.044085][ C0] CR2: 00007fb2c367cf10 CR3: 000000002d77e000 CR4: 00000000003506f0 [ 191.044100][ C0] Call Trace: [ 191.044107][ C0] [ 191.044114][ C0] __lock_acquire+0x611/0x7c80 [ 191.044134][ C0] ? verify_lock_unused+0x140/0x140 [ 191.044156][ C0] ? __lock_task_sighand+0x14a/0x2d0 [ 191.044184][ C0] ? verify_lock_unused+0x140/0x140 [ 191.044212][ C0] lock_acquire+0x197/0x410 [ 191.044228][ C0] ? __hrtimer_run_queues+0x5e3/0xc40 [ 191.044246][ C0] ? __lock_acquire+0x7c80/0x7c80 [ 191.044266][ C0] ? read_lock_is_recursive+0x20/0x20 [ 191.044283][ C0] ? do_raw_spin_unlock+0x121/0x230 [ 191.044304][ C0] ? _raw_spin_unlock_irqrestore+0xae/0x110 [ 191.044322][ C0] ? _raw_spin_unlock+0x40/0x40 [ 191.044339][ C0] _raw_spin_lock_irq+0xa3/0xe0 [ 191.044355][ C0] ? __hrtimer_run_queues+0x5e3/0xc40 [ 191.044372][ C0] ? _raw_spin_lock_irqsave+0xf0/0xf0 [ 191.044389][ C0] ? posix_timer_fn+0x2e1/0x3d0 [ 191.044407][ C0] __hrtimer_run_queues+0x5e3/0xc40 [ 191.044426][ C0] ? common_timer_wait_running+0x10/0x10 [ 191.044446][ C0] ? hrtimer_interrupt+0x9c0/0x9c0 [ 191.044462][ C0] ? ktime_get_update_offsets_now+0x3d2/0x3f0 [ 191.044486][ C0] hrtimer_interrupt+0x3c9/0x9c0 [ 191.044514][ C0] __sysvec_apic_timer_interrupt+0xfb/0x3b0 [ 191.044535][ C0] sysvec_apic_timer_interrupt+0x9f/0xc0 [ 191.044564][ C0] [ 191.044568][ C0] [ 191.044573][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 191.044598][ C0] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 [ 191.044616][ C0] Code: 00 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0a 04 ef f6 48 89 df e8 22 d6 ef f6 e8 3d 7c 13 f7 fb bf 01 00 00 00 62 f8 e2 f6 65 8b 05 53 41 8b 75 85 c0 74 02 5b c3 e8 70 25 88 [ 191.044628][ C0] RSP: 0018:ffffc9000469fc78 EFLAGS: 00000286 [ 191.044640][ C0] RAX: 55242be99db63a00 RBX: ffff88802d6b5c80 RCX: 55242be99db63a00 [ 191.044652][ C0] RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001 [ 191.044662][ C0] RBP: ffff88802d6b6118 R08: ffffffff8e4a8d6f R09: 1ffffffff1c951ad [ 191.044674][ C0] R10: dffffc0000000000 R11: fffffbfff1c951ae R12: 1ffff11005ad6c23 [ 191.044685][ C0] R13: 0000000000000021 R14: dffffc0000000000 R15: 0000000000000000 [ 191.044703][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 191.044718][ C0] get_signal+0x11f5/0x1400 [ 191.044752][ C0] arch_do_signal_or_restart+0x9c/0x7b0 [ 191.044779][ C0] ? get_sigframe_size+0x20/0x20 [ 191.044817][ C0] ? exit_to_user_mode_loop+0x3b/0x110 [ 191.044840][ C0] exit_to_user_mode_loop+0x70/0x110 [ 191.044862][ C0] exit_to_user_mode_prepare+0xf6/0x180 [ 191.044885][ C0] syscall_exit_to_user_mode+0x1a/0x50 [ 191.044900][ C0] do_syscall_64+0x61/0xb0 [ 191.044921][ C0] ? clear_bhb_loop+0x40/0x90 [ 191.044937][ C0] ? clear_bhb_loop+0x40/0x90 [ 191.044955][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 191.044972][ C0] RIP: 0033:0x7fb2c3665899 [ 191.044989][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 191.045001][ C0] RSP: 002b:00007ffd0fbaa038 EFLAGS: 00000246 [ 191.045013][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fb2c3665899 [ 191.045022][ C0] RDX: 000020000006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 191.045032][ C0] RBP: 0000000000000000 R08: 00007fb2c3625990 R09: 00007fb2c3625990 [ 191.045042][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb2c36c333c [ 191.045051][ C0] R13: 00007fb2c36bd106 R14: 00007ffd0fbaa070 R15: 0000000000000000 [ 191.045068][ C0] [ 191.045075][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.175 msecs