Warning: Permanently added '10.128.0.64' (ED25519) to the list of known hosts. [ 71.109527][ T5840] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 71.119874][ T5840] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 71.119924][ T5841] Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 [ 71.127923][ T5840] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 71.134461][ T5841] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 71.141711][ T5840] Bluetooth: hci4: unexpected cc 0x0c03 length: 249 > 1 [ 71.150271][ T5841] Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 [ 71.156257][ T5840] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 71.165420][ T5841] Bluetooth: hci4: unexpected cc 0x1003 length: 249 > 9 [ 71.176161][ T5840] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 71.177055][ T5841] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 71.190046][ T5840] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 71.191765][ T5841] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 71.197402][ T5845] Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 [ 71.207477][ T5841] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 71.218963][ T5840] Bluetooth: hci4: unexpected cc 0x1001 length: 249 > 9 [ 71.220469][ T5841] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 71.226947][ T5840] Bluetooth: hci4: unexpected cc 0x0c23 length: 249 > 4 [ 71.233450][ T5841] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 71.240586][ T5840] Bluetooth: hci4: unexpected cc 0x0c38 length: 249 > 2 [ 71.249607][ T5841] Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 [ 71.261358][ T5840] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 71.261660][ T5841] Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 [ 71.276075][ T5843] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 71.290160][ T5843] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 executing program [ 71.593540][ T5850] can0: slcan on ttyprintk. executing program executing program [ 72.612095][ T5850] can0 (unregistered): slcan off ttyprintk. executing program [ 72.658395][ T5852] can0: slcan on ttyprintk. [ 73.635124][ T5837] Bluetooth: hci1: command tx timeout [ 73.635531][ T5843] Bluetooth: hci3: command tx timeout [ 73.641311][ T51] Bluetooth: hci4: command tx timeout [ 73.646568][ T5146] Bluetooth: hci2: command tx timeout [ 73.652229][ T5841] Bluetooth: hci0: command tx timeout executing program [ 75.689602][ T51] Bluetooth: hci2: command tx timeout [ 75.690050][ T5146] Bluetooth: hci4: command tx timeout [ 75.695136][ T5837] Bluetooth: hci3: command tx timeout [ 75.700514][ T5843] Bluetooth: hci1: command tx timeout [ 75.706325][ T5841] Bluetooth: hci0: command tx timeout [ 177.699354][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 177.706377][ C1] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5826/1:b..l [ 177.714441][ C1] rcu: (detected by 1, t=10502 jiffies, g=9349, q=4088 ncpus=2) [ 177.722231][ C1] task:syz-executor234 state:R running task stack:26368 pid:5826 tgid:5826 ppid:5823 task_flags:0x440140 flags:0x00080000 [ 177.736058][ C1] Call Trace: [ 177.739336][ C1] [ 177.742304][ C1] __schedule+0x14ed/0x5040 [ 177.746815][ C1] ? kernel_text_address+0xa5/0xe0 [ 177.751921][ C1] ? __pfx___schedule+0x10/0x10 [ 177.756779][ C1] ? __lock_acquire+0x6b6/0x2cf0 [ 177.761730][ C1] preempt_schedule_irq+0x4d/0xa0 [ 177.766929][ C1] irqentry_exit+0x5e3/0x670 [ 177.771523][ C1] ? rcu_is_watching+0x15/0xb0 [ 177.776296][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 177.781760][ C1] RIP: 0010:lock_is_held_type+0x107/0x150 [ 177.787490][ C1] Code: 18 00 00 b8 ff ff ff ff 65 0f c1 05 a3 b0 44 07 83 f8 01 75 25 9c 58 a9 00 02 00 00 75 39 41 f7 c4 00 02 00 00 74 01 fb 89 d8 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 48 c7 [ 177.807115][ C1] RSP: 0018:ffffc900040df788 EFLAGS: 00000206 [ 177.813205][ C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000046 [ 177.821180][ C1] RDX: ffff8880776e0000 RSI: ffffffff8db82ed3 RDI: ffffffff8be085e0 [ 177.829167][ C1] RBP: 00000000ffffffff R08: ffffffff8258e247 R09: ffffffff8e13efa0 [ 177.837141][ C1] R10: 0000000000008000 R11: 0000000000000000 R12: 0000000000000246 [ 177.845110][ C1] R13: ffff8880776e0000 R14: ffffffff8e13efa0 R15: 0000000000000003 [ 177.853089][ C1] ? get_cached_acl+0xe7/0x510 [ 177.857869][ C1] ? get_cached_acl+0xe7/0x510 [ 177.862639][ C1] get_cached_acl+0x1b7/0x510 [ 177.867322][ C1] ? look_up_lock_class+0x57/0x110 [ 177.872442][ C1] ? __pfx_get_cached_acl+0x10/0x10 [ 177.877646][ C1] ? __lock_acquire+0x6b6/0x2cf0 [ 177.882597][ C1] __get_acl+0x84/0x400 [ 177.886761][ C1] ? __pfx___get_acl+0x10/0x10 [ 177.891530][ C1] ? get_random_u32+0x45e/0x8d0 [ 177.896608][ C1] posix_acl_create+0x134/0x4a0 [ 177.901505][ C1] ext4_init_acl+0xb3/0x320 [ 177.906041][ C1] ? __pfx_ext4_init_acl+0x10/0x10 [ 177.911166][ C1] ? do_raw_spin_unlock+0x122/0x240 [ 177.916386][ C1] ? _raw_spin_unlock+0x28/0x50 [ 177.921263][ C1] ? crc32c+0x191/0x480 [ 177.925439][ C1] __ext4_new_inode+0x31fb/0x3c90 [ 177.930491][ C1] ? tomoyo_path_number_perm+0x1bc/0x5a0 [ 177.936166][ C1] ? __pfx___ext4_new_inode+0x10/0x10 [ 177.941558][ C1] ? irqentry_exit+0x5e8/0x670 [ 177.946335][ C1] ext4_mkdir+0x3cb/0xc50 [ 177.950688][ C1] ? __pfx_ext4_mkdir+0x10/0x10 [ 177.955585][ C1] ? security_inode_mkdir+0x50/0x340 [ 177.960925][ C1] ? __pfx_bpf_lsm_inode_mkdir+0x10/0x10 [ 177.966586][ C1] ? bpf_lsm_inode_mkdir+0x9/0x20 [ 177.971645][ C1] vfs_mkdir+0x414/0x630 [ 177.975913][ C1] do_mkdirat+0x276/0x500 [ 177.980360][ C1] ? __pfx_do_mkdirat+0x10/0x10 [ 177.985219][ C1] ? strncpy_from_user+0x150/0x2c0 [ 177.990345][ C1] ? getname_flags+0x1e5/0x540 [ 177.995140][ C1] __x64_sys_mkdir+0x6c/0x80 [ 177.999755][ C1] do_syscall_64+0xec/0xf80 [ 178.004274][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 178.010351][ C1] ? trace_irq_disable+0x37/0x100 [ 178.015386][ C1] ? clear_bhb_loop+0x40/0x90 [ 178.020084][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 178.025993][ C1] RIP: 0033:0x7f939d019657 [ 178.030431][ C1] RSP: 002b:00007ffe35562b48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 178.038940][ C1] RAX: ffffffffffffffda RBX: 00007f939d0720ae RCX: 00007f939d019657 [ 178.046917][ C1] RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007f939d0720ae [ 178.054893][ C1] RBP: 00007ffe35562bf0 R08: 0000000000000000 R09: 0000000000000000 [ 178.062878][ C1] R10: 0000000000000000 R11: 0000000000000206 R12: 00007f939d07833c [ 178.070869][ C1] R13: 0000000000000004 R14: 0000000000000004 R15: 0000000000000001 [ 178.078866][ C1] [ 178.081928][ C1] rcu: rcu_preempt kthread starved for 10234 jiffies! g9349 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 178.093049][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 178.103029][ C1] rcu: RCU grace-period kthread stack dump: [ 178.108919][ C1] task:rcu_preempt state:R running task stack:28080 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 [ 178.122410][ C1] Call Trace: [ 178.125694][ C1] [ 178.128640][ C1] __schedule+0x14ed/0x5040 [ 178.133176][ C1] ? do_raw_spin_lock+0x121/0x290 [ 178.138258][ C1] ? __pfx___schedule+0x10/0x10 [ 178.143238][ C1] ? schedule+0x91/0x360 [ 178.147517][ C1] schedule+0x165/0x360 [ 178.151712][ C1] schedule_timeout+0x12b/0x270 [ 178.156591][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 178.161977][ C1] ? __pfx_process_timeout+0x10/0x10 [ 178.167276][ C1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 178.173085][ C1] ? prepare_to_swait_event+0x341/0x380 [ 178.178648][ C1] rcu_gp_fqs_loop+0x301/0x11b0 [ 178.183506][ C1] ? lockdep_hardirqs_on+0x7b/0x110 [ 178.188719][ C1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 178.194530][ C1] ? rcu_gp_init+0x144f/0x1700 [ 178.199301][ C1] ? __pfx_rcu_watching_snap_recheck+0x10/0x10 [ 178.205457][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 178.210741][ C1] ? _raw_spin_unlock_irq+0x2e/0x50 [ 178.215958][ C1] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 178.221768][ C1] rcu_gp_kthread+0x9b/0x2d0 [ 178.226368][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 178.231573][ C1] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 178.237387][ C1] ? __kthread_parkme+0x7b/0x200 [ 178.242332][ C1] ? __kthread_parkme+0x1a1/0x200 [ 178.247362][ C1] kthread+0x389/0x480 [ 178.251441][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 178.256648][ C1] ? __pfx_kthread+0x10/0x10 [ 178.261249][ C1] ret_from_fork+0x510/0xa50 [ 178.265844][ C1] ? __pfx_ret_from_fork+0x10/0x10 [ 178.270954][ C1] ? __switch_to+0xc9e/0x1480 [ 178.275645][ C1] ? __pfx_kthread+0x10/0x10 [ 178.280244][ C1] ret_from_fork_asm+0x1a/0x30 [ 178.285462][ C1] [ 178.288478][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 178.294810][ C1] Sending NMI from CPU 1 to CPUs 0: [ 178.300021][ C0] NMI backtrace for cpu 0 [ 178.300050][ C0] CPU: 0 UID: 0 PID: 5856 Comm: syz-executor234 Not tainted syzkaller #0 PREEMPT(full) [ 178.300067][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 178.300076][ C0] RIP: 0010:filter_irq_stacks+0x56/0xa0 [ 178.300101][ C0] Code: 03 42 80 3c 28 00 74 08 4c 89 ff e8 d4 c7 7a 00 49 8b 04 de 48 3d 30 02 00 81 0f 93 c1 48 3d 90 16 00 81 0f 92 c2 84 d1 75 27 <48> 3d 10 c4 5f 8b 0f 92 c1 48 3d 2b c4 5f 8b 0f 93 c0 08 c8 74 11 [ 178.300113][ C0] RSP: 0018:ffffc9000429f368 EFLAGS: 00000246 [ 178.300127][ C0] RAX: ffffffff850f8617 RBX: 0000000000000003 RCX: 0000000000000001 [ 178.300137][ C0] RDX: 0000000000000c00 RSI: 000000000000000d RDI: ffffc9000429f3f0 [ 178.300146][ C0] RBP: ffffc9000429f618 R08: ffffffff81cfe626 R09: ffffffff8e13efa0 [ 178.300157][ C0] R10: ffffc9000429f2f8 R11: ffffffff81acb3b0 R12: 000000000000000d [ 178.300166][ C0] R13: dffffc0000000000 R14: ffffc9000429f3f0 R15: ffffc9000429f408 [ 178.300177][ C0] FS: 0000555575e003c0(0000) GS:ffff888125c0a000(0000) knlGS:0000000000000000 [ 178.300189][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 178.300199][ C0] CR2: 0000200000000100 CR3: 0000000031cd6000 CR4: 00000000003526f0 [ 178.300212][ C0] Call Trace: [ 178.300218][ C0] [ 178.300225][ C0] stack_depot_save_flags+0x33/0x810 [ 178.300248][ C0] kasan_save_track+0x4f/0x80 [ 178.300264][ C0] ? kasan_save_track+0x3e/0x80 [ 178.300279][ C0] ? __kasan_kmalloc+0x93/0xb0 [ 178.300295][ C0] ? __kmalloc_cache_noprof+0x3e2/0x700 [ 178.300311][ C0] ? tty_open+0x947/0xd10 [ 178.300323][ C0] ? chrdev_open+0x4cc/0x5e0 [ 178.300341][ C0] ? do_dentry_open+0x785/0x14e0 [ 178.300361][ C0] ? vfs_open+0x3b/0x340 [ 178.300372][ C0] ? path_openat+0x2de0/0x3840 [ 178.300388][ C0] ? do_filp_open+0x1fa/0x410 [ 178.300403][ C0] ? do_sys_openat2+0x121/0x200 [ 178.300415][ C0] ? __x64_sys_openat+0x138/0x170 [ 178.300428][ C0] ? do_syscall_64+0xec/0xf80 [ 178.300441][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 178.300486][ C0] __kasan_kmalloc+0x93/0xb0 [ 178.300503][ C0] __kmalloc_cache_noprof+0x3e2/0x700 [ 178.300520][ C0] ? tty_open+0x947/0xd10 [ 178.300535][ C0] tty_open+0x947/0xd10 [ 178.300551][ C0] ? kobject_get_unless_zero+0x161/0x1f0 [ 178.300571][ C0] ? __pfx_tty_open+0x10/0x10 [ 178.300585][ C0] ? do_raw_spin_unlock+0x122/0x240 [ 178.300607][ C0] chrdev_open+0x4cc/0x5e0 [ 178.300627][ C0] ? __pfx_chrdev_open+0x10/0x10 [ 178.300645][ C0] ? fsnotify_open_perm_and_set_mode+0x113/0x610 [ 178.300664][ C0] ? __pfx_chrdev_open+0x10/0x10 [ 178.300681][ C0] do_dentry_open+0x785/0x14e0 [ 178.300707][ C0] vfs_open+0x3b/0x340 [ 178.300719][ C0] ? path_openat+0x2dc8/0x3840 [ 178.300736][ C0] path_openat+0x2de0/0x3840 [ 178.300756][ C0] ? stack_trace_save+0x9c/0xe0 [ 178.300782][ C0] ? kasan_save_track+0x3e/0x80 [ 178.300799][ C0] ? __pfx_path_openat+0x10/0x10 [ 178.300817][ C0] ? __lock_acquire+0x6b6/0x2cf0 [ 178.300839][ C0] do_filp_open+0x1fa/0x410 [ 178.300856][ C0] ? __pfx_do_filp_open+0x10/0x10 [ 178.300883][ C0] ? _raw_spin_unlock+0x28/0x50 [ 178.300897][ C0] ? alloc_fd+0x64c/0x6c0 [ 178.300921][ C0] do_sys_openat2+0x121/0x200 [ 178.300936][ C0] ? __pfx_do_sys_openat2+0x10/0x10 [ 178.300950][ C0] ? __se_sys_prctl+0x223/0x1830 [ 178.300972][ C0] ? __pfx___se_sys_prctl+0x10/0x10 [ 178.300992][ C0] __x64_sys_openat+0x138/0x170 [ 178.301009][ C0] do_syscall_64+0xec/0xf80 [ 178.301024][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 178.301038][ C0] ? trace_irq_disable+0x37/0x100 [ 178.301057][ C0] ? clear_bhb_loop+0x40/0x90 [ 178.301073][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 178.301087][ C0] RIP: 0033:0x7f939d01a8d9 [ 178.301101][ 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 [ 178.301112][ C0] RSP: 002b:00007ffe35562988 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 178.301131][ C0] RAX: ffffffffffffffda RBX: 00007f939d072038 RCX: 00007f939d01a8d9 [ 178.301141][ C0] RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c [ 178.301151][ C0] RBP: 0000000000000000 R08: 00007f939cfd2990 R09: 00007f939cfd2990 [ 178.301160][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f939d07833c [ 178.301169][ C0] R13: 00007f939d072106 R14: 00007ffe355629c0 R15: 0000000000000000 [ 178.301186][ C0] [ 178.301193][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.172 msecs