Warning: Permanently added '10.128.1.190' (ED25519) to the list of known hosts. [ 60.411753][ T4286] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 60.416135][ T4287] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 60.420111][ T4286] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 60.426353][ T4287] Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 [ 60.434124][ T4286] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 60.441208][ T4287] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 60.448292][ T4286] Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 [ 60.454851][ T4287] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 60.461690][ T4286] Bluetooth: hci4: unexpected cc 0x0c03 length: 249 > 1 [ 60.469174][ T4287] Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 [ 60.475971][ T4286] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 60.482581][ T4287] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 60.490418][ T4286] Bluetooth: hci4: unexpected cc 0x1003 length: 249 > 9 [ 60.503933][ T4286] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 60.504798][ T4287] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 60.511599][ T4286] Bluetooth: hci4: unexpected cc 0x1001 length: 249 > 9 [ 60.518692][ T4287] Bluetooth: hci2: unexpected cc 0x0c25 length: 249 > 3 [ 60.525388][ T4286] Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 [ 60.532259][ T4287] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 60.540041][ T4286] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 60.554558][ T4286] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 60.554651][ T4288] Bluetooth: hci3: unexpected cc 0x0c25 length: 249 > 3 [ 60.562287][ T4289] Bluetooth: hci4: unexpected cc 0x0c23 length: 249 > 4 [ 60.569410][ T4288] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 60.576530][ T4289] Bluetooth: hci4: unexpected cc 0x0c25 length: 249 > 3 [ 60.582677][ T4288] Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 [ 60.589751][ T4287] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 60.596443][ T4288] Bluetooth: hci1: unexpected cc 0x0c25 length: 249 > 3 [ 60.604069][ T4289] Bluetooth: hci4: unexpected cc 0x0c38 length: 249 > 2 [ 60.611361][ T4288] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 executing program executing program [ 165.877260][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 165.884339][ C1] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4268/1:b..l [ 165.892461][ C1] (detected by 1, t=10503 jiffies, g=5749, q=25 ncpus=2) [ 165.899594][ C1] task:syz-executor351 state:R running task stack:26240 pid:4268 ppid:4263 flags:0x00004002 [ 165.910824][ C1] Call Trace: [ 165.914110][ C1] [ 165.917045][ C1] __schedule+0x10ec/0x40b0 [ 165.921600][ C1] ? __sched_text_start+0x8/0x8 [ 165.926463][ C1] ? lock_chain_count+0x20/0x20 [ 165.931342][ C1] ? preempt_schedule_irq+0xa6/0x150 [ 165.936651][ C1] preempt_schedule_irq+0xb1/0x150 [ 165.941777][ C1] ? preempt_schedule_notrace+0x110/0x110 [ 165.947514][ C1] ? rcu_is_watching+0x11/0xa0 [ 165.952296][ C1] ? rcu_irq_exit_check_preempt+0xdb/0x210 [ 165.958120][ C1] irqentry_exit+0x63/0x70 [ 165.962548][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 165.968540][ C1] RIP: 0010:preempt_count_sub+0x61/0x160 [ 165.974183][ C1] Code: ff ff ff 7f 39 cf 7f 25 81 ff ff 00 00 00 0f 93 c1 84 c0 0f 95 c0 08 c8 74 53 65 8b 05 40 ad aa 7e f7 df 65 01 3d 37 ad aa 7e <5b> 5d c3 e8 d7 40 ac 02 85 c0 74 f4 48 c7 c0 e8 42 ff 8d 48 c1 e8 [ 165.993813][ C1] RSP: 0018:ffffc90003cc7a70 EFLAGS: 00000297 [ 165.999895][ C1] RAX: 0000000080000001 RBX: dffffc0000000000 RCX: 0000000000000000 [ 166.007870][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff [ 166.015844][ C1] RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed100eb0fc42 [ 166.023823][ C1] R10: ffffed100eb0fc42 R11: 1ffff1100eb0fc41 R12: 1ffff1100eb0fc49 [ 166.031803][ C1] R13: 0000000000000000 R14: ffff88807587e248 R15: dffffc0000000000 [ 166.039796][ C1] _raw_spin_unlock+0x24/0x40 [ 166.044484][ C1] lockref_get_not_dead+0x72/0xb0 [ 166.049522][ C1] try_to_unlazy+0x125/0x5a0 [ 166.054126][ C1] complete_walk+0x113/0x350 [ 166.058813][ C1] __filename_parentat+0x221/0x610 [ 166.063945][ C1] ? vfs_path_parent_lookup+0x50/0x50 [ 166.069329][ C1] ? __x64_sys_mkdir+0x5b/0x80 [ 166.074117][ C1] ? __virt_addr_valid+0x188/0x540 [ 166.079252][ C1] filename_create+0xcc/0x450 [ 166.083940][ C1] ? __might_fault+0xa6/0x120 [ 166.088626][ C1] ? kern_path_create+0x50/0x50 [ 166.093480][ C1] ? __virt_addr_valid+0x465/0x540 [ 166.098607][ C1] do_mkdirat+0x9d/0x430 [ 166.102857][ C1] ? vfs_mkdir+0x570/0x570 [ 166.107279][ C1] ? getname_flags+0x206/0x500 [ 166.112154][ C1] __x64_sys_mkdir+0x6a/0x80 [ 166.116767][ C1] do_syscall_64+0x4c/0xa0 [ 166.121216][ C1] ? clear_bhb_loop+0x60/0xb0 [ 166.125907][ C1] ? clear_bhb_loop+0x60/0xb0 [ 166.130596][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 166.136506][ C1] RIP: 0033:0x7f04215e2e97 [ 166.140945][ C1] RSP: 002b:00007ffea8dd6b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 166.149368][ C1] RAX: ffffffffffffffda RBX: 00007f042163b0ae RCX: 00007f04215e2e97 [ 166.157341][ C1] RDX: 00007f042163b101 RSI: 00000000000001c0 RDI: 00007f042163b106 [ 166.165329][ C1] RBP: 00007f042163b0e6 R08: 0000000000000000 R09: 0000000000000000 [ 166.173305][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f042164133c [ 166.181281][ C1] R13: 00007f042163b106 R14: 0000000000000000 R15: 0000000000000000 [ 166.189273][ C1] [ 166.192296][ C1] rcu: rcu_preempt kthread starved for 10533 jiffies! g5749 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 166.203666][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 166.213635][ C1] rcu: RCU grace-period kthread stack dump: [ 166.219522][ C1] task:rcu_preempt state:R running task stack:28192 pid:16 ppid:2 flags:0x00004000 [ 166.230313][ C1] Call Trace: [ 166.233594][ C1] [ 166.236545][ C1] __schedule+0x10ec/0x40b0 [ 166.241078][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 166.246290][ C1] ? _raw_spin_unlock+0x40/0x40 [ 166.251163][ C1] ? enqueue_timer+0x23f/0x5c0 [ 166.255936][ C1] ? __sched_text_start+0x8/0x8 [ 166.260798][ C1] ? __mod_timer+0x91e/0xd00 [ 166.265408][ C1] schedule+0xb9/0x180 [ 166.269487][ C1] schedule_timeout+0x15c/0x280 [ 166.274343][ C1] ? console_conditional_schedule+0x40/0x40 [ 166.280237][ C1] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 166.286227][ C1] ? update_process_times+0x1b0/0x1b0 [ 166.291617][ C1] ? prepare_to_swait_event+0x335/0x350 [ 166.297179][ C1] rcu_gp_fqs_loop+0x2f2/0x1310 [ 166.302042][ C1] ? rcu_gp_kthread+0x380/0x380 [ 166.306894][ C1] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 166.312884][ C1] ? rcu_gp_init+0x14b0/0x14b0 [ 166.317653][ C1] ? rcu_gp_cleanup+0xb4c/0xca0 [ 166.322511][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 166.327727][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 166.332944][ C1] rcu_gp_kthread+0x95/0x380 [ 166.337549][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 166.342670][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 166.348573][ C1] ? __kthread_parkme+0x162/0x1c0 [ 166.353614][ C1] kthread+0x29d/0x330 [ 166.357692][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 166.362804][ C1] ? kthread_blkcg+0xd0/0xd0 [ 166.367404][ C1] ret_from_fork+0x1f/0x30 [ 166.371841][ C1] [ 166.374872][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 166.381195][ C1] Sending NMI from CPU 1 to CPUs 0: [ 166.386408][ C0] NMI backtrace for cpu 0 [ 166.386428][ C0] CPU: 0 PID: 4293 Comm: syz-executor351 Not tainted syzkaller #0 [ 166.386442][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 166.386455][ C0] RIP: 0010:__kasan_check_read+0x0/0x10 [ 166.386478][ C0] Code: 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 fa c5 39 8c eb 0a 48 c7 c7 ec 2d 23 8c 48 89 de e8 68 53 34 08 31 ed eb d7 00 00 cc cc <89> f6 48 8b 0c 24 31 d2 e9 a3 ec ff ff 0f 1f 00 89 f6 48 8b 0c 24 [ 166.386489][ C0] RSP: 0018:ffffc90003e374f8 EFLAGS: 00000002 [ 166.386502][ C0] RAX: 0000000000000008 RBX: 0000000000000048 RCX: ffffffff81630c92 [ 166.386511][ C0] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff908c8248 [ 166.386521][ C0] RBP: ffffc90003e37750 R08: dffffc0000000000 R09: fffffbfff211904a [ 166.386531][ C0] R10: fffffbfff211904a R11: 1ffffffff2119049 R12: ffff888079783b80 [ 166.386541][ C0] R13: 0000000000000008 R14: 0000000000000000 R15: ffff8880797846d0 [ 166.386550][ C0] FS: 0000555580f67480(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 [ 166.386562][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 166.386572][ C0] CR2: 000020000006b000 CR3: 00000000299eb000 CR4: 00000000003506f0 [ 166.386584][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 166.386593][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 166.386601][ C0] Call Trace: [ 166.386607][ C0] [ 166.386611][ C0] __lock_acquire+0x5e3/0x7c50 [ 166.386639][ C0] ? verify_lock_unused+0x140/0x140 [ 166.386659][ C0] ? verify_lock_unused+0x140/0x140 [ 166.386679][ C0] lock_acquire+0x1b4/0x490 [ 166.386694][ C0] ? ktime_get+0x7b/0x270 [ 166.386712][ C0] ? read_lock_is_recursive+0x10/0x10 [ 166.386729][ C0] ? ktime_get+0x7b/0x270 [ 166.386743][ C0] ? ktime_get+0x7b/0x270 [ 166.386757][ C0] seqcount_lockdep_reader_access+0xc6/0x1c0 [ 166.386772][ C0] ? ktime_get+0x7b/0x270 [ 166.386785][ C0] ? ktime_get_real_ts64+0x420/0x420 [ 166.386800][ C0] ? ktime_get+0x7b/0x270 [ 166.386813][ C0] ? seqcount_lockdep_reader_access+0x15c/0x1c0 [ 166.386828][ C0] ? ktime_get_real_ts64+0x420/0x420 [ 166.386843][ C0] ktime_get+0x7b/0x270 [ 166.386857][ C0] clockevents_program_min_delta+0x55/0x340 [ 166.386874][ C0] ? ktime_get+0x247/0x270 [ 166.386890][ C0] hrtimer_start_range_ns+0xb9a/0xfc0 [ 166.386908][ C0] posixtimer_rearm+0x131/0x340 [ 166.386927][ C0] dequeue_signal+0x1b6/0x4b0 [ 166.386947][ C0] get_signal+0x547/0x1350 [ 166.386971][ C0] arch_do_signal_or_restart+0xb7/0x1240 [ 166.386989][ C0] ? __ia32_sys_rt_sigreturn+0x660/0x790 [ 166.387006][ C0] ? load_gs_index+0x120/0x120 [ 166.387020][ C0] ? get_sigframe_size+0x10/0x10 [ 166.387041][ C0] ? exit_to_user_mode_loop+0x3b/0x110 [ 166.387060][ C0] exit_to_user_mode_loop+0x70/0x110 [ 166.387077][ C0] exit_to_user_mode_prepare+0xee/0x180 [ 166.387094][ C0] syscall_exit_to_user_mode+0x16/0x40 [ 166.387110][ C0] do_syscall_64+0x58/0xa0 [ 166.387127][ C0] ? clear_bhb_loop+0x60/0xb0 [ 166.387143][ C0] ? clear_bhb_loop+0x60/0xb0 [ 166.387159][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 166.387173][ C0] RIP: 0033:0x7f04215e4119 [ 166.387186][ 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 [ 166.387196][ C0] RSP: 002b:00007ffea8dd6958 EFLAGS: 00000246 [ 166.387206][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f04215e4119 [ 166.387215][ C0] RDX: 000020000006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 166.387223][ C0] RBP: 0000000000000000 R08: 00007f042164133c R09: 00007f042164133c [ 166.387236][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f042164133c [ 166.387244][ C0] R13: 00007f042163b106 R14: 00007ffea8dd69a0 R15: 0000000000000000 [ 166.387258][ C0]