DUID 00:04:52:37:01:18:ef:18:23:1a:50:cb:d1:49:65:cf:57:ac forked to background, child pid 3916 [ 48.449485][ T3917] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.459719][ T3917] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.118' (ED25519) to the list of known hosts. syzkaller login: [ 79.849460][ T4269] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 79.860206][ T4269] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 79.868180][ T4269] Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 [ 79.868465][ T4271] Bluetooth: hci4: unexpected cc 0x0c03 length: 249 > 1 [ 79.876816][ T4269] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 79.883089][ T4271] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 79.892332][ T4269] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 79.897513][ T4271] Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 [ 79.904654][ T4269] Bluetooth: hci4: unexpected cc 0x1003 length: 249 > 9 [ 79.911452][ T4271] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 79.918982][ T4269] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 79.925360][ T4271] Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 [ 79.931896][ T4269] Bluetooth: hci4: unexpected cc 0x1001 length: 249 > 9 [ 79.938916][ T4271] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 79.946700][ T4269] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 79.961303][ T4271] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 79.961353][ T4269] Bluetooth: hci4: unexpected cc 0x0c23 length: 249 > 4 [ 79.969361][ T4272] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 79.977597][ T4269] Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 [ 79.990767][ T4269] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 79.991186][ T4272] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 79.998496][ T4273] Bluetooth: hci2: unexpected cc 0x0c25 length: 249 > 3 [ 80.005227][ T4272] Bluetooth: hci4: unexpected cc 0x0c25 length: 249 > 3 [ 80.012935][ T4271] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 80.019090][ T4272] Bluetooth: hci3: unexpected cc 0x0c25 length: 249 > 3 [ 80.028190][ T4273] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 80.033398][ T4272] Bluetooth: hci4: unexpected cc 0x0c38 length: 249 > 2 [ 80.041993][ T4273] Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 [ 80.049076][ T4272] Bluetooth: hci1: unexpected cc 0x0c25 length: 249 > 3 [ 80.061867][ T4268] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 executing program executing program [ 185.318006][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 185.325107][ C1] (detected by 1, t=10502 jiffies, g=7293, q=44 ncpus=2) [ 185.332250][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4294955651-4294945151), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 185.345645][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g7293 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 185.356778][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 185.366770][ C1] rcu: RCU grace-period kthread stack dump: [ 185.372750][ C1] task:rcu_preempt state:R running task stack:26712 pid:16 ppid:2 flags:0x00004000 [ 185.383681][ C1] Call Trace: [ 185.386988][ C1] [ 185.389954][ C1] __schedule+0x143f/0x4570 [ 185.394530][ C1] ? _raw_spin_unlock+0x40/0x40 [ 185.399426][ C1] ? __mod_timer+0x956/0xee0 [ 185.404063][ C1] ? release_firmware_map_entry+0x18b/0x18b [ 185.410037][ C1] ? lockdep_softirqs_off+0x420/0x420 [ 185.415446][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 185.421389][ C1] ? _raw_spin_unlock+0x40/0x40 [ 185.426288][ C1] schedule+0xbf/0x180 [ 185.430410][ C1] schedule_timeout+0x1b9/0x300 [ 185.435292][ C1] ? console_conditional_schedule+0x40/0x40 [ 185.441221][ C1] ? update_process_times+0x1b0/0x1b0 [ 185.446635][ C1] ? prepare_to_swait_event+0x329/0x350 [ 185.452230][ C1] rcu_gp_fqs_loop+0x2d2/0x1150 [ 185.457124][ C1] ? dump_blkd_tasks+0x810/0x810 [ 185.462137][ C1] ? lockdep_hardirqs_on+0x94/0x130 [ 185.467367][ C1] ? rcu_gp_init+0x15f0/0x15f0 [ 185.472162][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 185.478095][ C1] ? finish_swait+0xcf/0x1e0 [ 185.482739][ C1] rcu_gp_kthread+0xa3/0x3b0 [ 185.487369][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 185.492510][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 185.498437][ C1] ? __kthread_parkme+0x168/0x1c0 [ 185.503509][ C1] kthread+0x28d/0x320 [ 185.507602][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 185.512746][ C1] ? kthread_blkcg+0xd0/0xd0 [ 185.517366][ C1] ret_from_fork+0x1f/0x30 [ 185.521833][ C1] [ 185.524886][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 185.531323][ C1] Sending NMI from CPU 1 to CPUs 0: [ 185.536556][ C0] NMI backtrace for cpu 0 [ 185.536582][ C0] CPU: 0 PID: 4274 Comm: syz-executor128 Not tainted 6.1.134-syzkaller #0 [ 185.536599][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 185.536609][ C0] RIP: 0010:__lock_acquire+0xd50/0x1f80 [ 185.536639][ C0] Code: 0f 85 aa 0d 00 00 83 3d bd 68 d1 15 00 41 bd 01 00 00 00 75 0a 49 83 ff ff 0f 85 a4 08 00 00 48 89 e8 48 c1 e8 03 80 3c 38 00 <74> 12 48 89 ef e8 e6 43 77 00 48 bf 00 00 00 00 00 fc ff df 4c 89 [ 185.536653][ C0] RSP: 0018:ffffc90003f779c0 EFLAGS: 00000046 [ 185.536668][ C0] RAX: 1ffff1100497bc84 RBX: ffff888024bde410 RCX: ffffffff973c3103 [ 185.536682][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000 [ 185.536693][ C0] RBP: ffff888024bde420 R08: dffffc0000000000 R09: fffffbfff2257853 [ 185.536706][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888024bde418 [ 185.536718][ C0] R13: 0000000000000001 R14: ffff888024bde440 R15: ffffffffffffffff [ 185.536730][ C0] FS: 00005555749673c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 [ 185.536746][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 185.536758][ C0] CR2: 000020000006b000 CR3: 00000000273c8000 CR4: 00000000003506f0 [ 185.536772][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 185.536782][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 185.536793][ C0] Call Trace: [ 185.536799][ C0] [ 185.536811][ C0] lock_acquire+0x1f8/0x5a0 [ 185.536836][ C0] ? __might_fault+0xa1/0x110 [ 185.536862][ C0] ? read_lock_is_recursive+0x10/0x10 [ 185.536889][ C0] ? __might_sleep+0xb0/0xb0 [ 185.536906][ C0] ? get_sigframe+0x378/0x4b0 [ 185.536931][ C0] ? __might_fault+0xa1/0x110 [ 185.536953][ C0] __might_fault+0xbd/0x110 [ 185.536975][ C0] ? __might_fault+0xa1/0x110 [ 185.536997][ C0] _copy_to_user+0x26/0x130 [ 185.537020][ C0] copy_siginfo_to_user+0x20/0x140 [ 185.537042][ C0] arch_do_signal_or_restart+0xb99/0x1a10 [ 185.537064][ C0] ? __might_fault+0xa1/0x110 [ 185.537095][ C0] ? get_sigframe_size+0x10/0x10 [ 185.537114][ C0] ? restore_altstack+0x107/0x150 [ 185.537133][ C0] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 185.537164][ C0] ? exit_to_user_mode_loop+0x39/0x100 [ 185.537182][ C0] exit_to_user_mode_loop+0x6a/0x100 [ 185.537199][ C0] exit_to_user_mode_prepare+0xb1/0x140 [ 185.537217][ C0] syscall_exit_to_user_mode+0x60/0x270 [ 185.537241][ C0] do_syscall_64+0x47/0xb0 [ 185.537256][ C0] ? clear_bhb_loop+0x45/0xa0 [ 185.537278][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 185.537301][ C0] RIP: 0033:0x7f51bac1a899 [ 185.537326][ 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 [ 185.537340][ C0] RSP: 002b:00007ffd894f1368 EFLAGS: 00000246 [ 185.537353][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f51bac1a899 [ 185.537364][ C0] RDX: 000020000006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 185.537374][ C0] RBP: 0000000000000000 R08: 00007f51babda990 R09: 00007f51babda990 [ 185.537385][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f51bac7833c [ 185.537396][ C0] R13: 00007f51bac72106 R14: 00007ffd894f13a0 R15: 0000000000000000 [ 185.537413][ C0]