Warning: Permanently added '10.128.1.249' (ED25519) to the list of known hosts. executing program [ 572.912115][ T27] INFO: task kworker/0:1:13 blocked for more than 143 seconds. [ 572.919838][ T27] Not tainted 5.15.161-syzkaller #0 [ 572.927750][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 572.936631][ T27] task:kworker/0:1 state:D stack:23968 pid: 13 ppid: 2 flags:0x00004000 [ 572.946078][ T27] Workqueue: ipv6_addrconf addrconf_verify_work [ 572.952575][ T27] Call Trace: [ 572.955861][ T27] [ 572.958801][ T27] __schedule+0x12c4/0x45b0 [ 572.963591][ T27] ? mark_lock+0x98/0x340 [ 572.967942][ T27] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 572.974147][ T27] ? release_firmware_map_entry+0x190/0x190 [ 572.980062][ T27] ? __mutex_trylock_common+0x8d/0x2e0 [ 572.985788][ T27] ? do_raw_spin_unlock+0x137/0x8b0 [ 572.991005][ T27] ? _raw_spin_unlock_irq+0x1f/0x40 [ 572.996415][ T27] ? lockdep_hardirqs_on+0x94/0x130 [ 573.001636][ T27] schedule+0x11b/0x1f0 [ 573.006004][ T27] schedule_preempt_disabled+0xf/0x20 [ 573.011395][ T27] __mutex_lock_common+0xe34/0x25a0 [ 573.016834][ T27] ? addrconf_verify_work+0xa/0x20 [ 573.022195][ T27] ? mutex_lock_io_nested+0x60/0x60 [ 573.027407][ T27] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 573.033630][ T27] ? print_irqtrace_events+0x210/0x210 [ 573.039102][ T27] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 573.045481][ T27] ? do_raw_spin_unlock+0x137/0x8b0 [ 573.050705][ T27] mutex_lock_nested+0x17/0x20 [ 573.055698][ T27] addrconf_verify_work+0xa/0x20 [ 573.060653][ T27] process_one_work+0x8a1/0x10c0 [ 573.065840][ T27] ? worker_detach_from_pool+0x260/0x260 [ 573.071494][ T27] ? _raw_spin_lock_irqsave+0x120/0x120 [ 573.077304][ T27] ? kthread_data+0x4e/0xc0 [ 573.081914][ T27] ? wq_worker_running+0x97/0x170 [ 573.087188][ T27] worker_thread+0xaca/0x1280 [ 573.092219][ T27] kthread+0x3f6/0x4f0 [ 573.096308][ T27] ? rcu_lock_release+0x20/0x20 [ 573.101175][ T27] ? kthread_blkcg+0xd0/0xd0 [ 573.106491][ T27] ret_from_fork+0x1f/0x30 [ 573.110940][ T27] [ 573.114320][ T27] [ 573.114320][ T27] Showing all locks held in the system: [ 573.122258][ T27] 3 locks held by kworker/0:1/13: [ 573.127288][ T27] #0: ffff888023b13538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 [ 573.138516][ T27] #1: ffffc90000d27d20 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 [ 573.148989][ T27] #2: ffffffff8d9e8348 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 573.158607][ T27] 1 lock held by khungtaskd/27: [ 573.163689][ T27] #0: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 573.173233][ T27] 2 locks held by getty/3259: [ 573.177914][ T27] #0: ffff888024c47098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 [ 573.187897][ T27] #1: ffffc900024b32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 [ 573.198334][ T27] 2 locks held by syz-executor413/3528: [ 573.204037][ T27] [ 573.206365][ T27] ============================================= [ 573.206365][ T27] [ 573.215016][ T27] NMI backtrace for cpu 0 [ 573.219358][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.161-syzkaller #0 [ 573.227343][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 573.237397][ T27] Call Trace: [ 573.240676][ T27] [ 573.243608][ T27] dump_stack_lvl+0x1e3/0x2d0 [ 573.248301][ T27] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 573.253941][ T27] ? panic+0x860/0x860 [ 573.258032][ T27] ? nmi_cpu_backtrace+0x23b/0x4a0 [ 573.263159][ T27] nmi_cpu_backtrace+0x46a/0x4a0 [ 573.268102][ T27] ? __wake_up_klogd+0xd5/0x100 [ 573.272961][ T27] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 573.279120][ T27] ? _printk+0xd1/0x120 [ 573.283281][ T27] ? panic+0x860/0x860 [ 573.287356][ T27] ? __wake_up_klogd+0xcc/0x100 [ 573.292212][ T27] ? panic+0x860/0x860 [ 573.296293][ T27] ? __rcu_read_unlock+0x92/0x100 [ 573.301333][ T27] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 573.307415][ T27] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 573.313405][ T27] watchdog+0xe72/0xeb0 [ 573.317581][ T27] kthread+0x3f6/0x4f0 [ 573.321653][ T27] ? hungtask_pm_notify+0x50/0x50 [ 573.326690][ T27] ? kthread_blkcg+0xd0/0xd0 [ 573.331297][ T27] ret_from_fork+0x1f/0x30 [ 573.335779][ T27] [ 573.338949][ T27] Sending NMI from CPU 0 to CPUs 1: [ 573.344204][ C1] NMI backtrace for cpu 1 [ 573.344219][ C1] CPU: 1 PID: 3528 Comm: syz-executor413 Not tainted 5.15.161-syzkaller #0 [ 573.344237][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 573.344249][ C1] RIP: 0010:idr_find+0x27/0x60 [ 573.344269][ C1] Code: 00 66 90 41 56 53 49 89 f6 48 89 fb e8 e2 bf 54 fd 48 8d 7b 50 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 14 8b 43 50 49 29 c6 48 89 df 4c 89 f6 5b 41 5e e9 71 fc [ 573.344282][ C1] RSP: 0018:ffffc90002ed6840 EFLAGS: 00000a06 [ 573.344298][ C1] RAX: 0000000000000000 RBX: ffff88814a8a8490 RCX: dffffc0000000000 [ 573.344311][ C1] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88814a8a84e0 [ 573.344322][ C1] RBP: ffff88814a8a8490 R08: dffffc0000000000 R09: fffff520005dacc9 [ 573.344335][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 573.344347][ C1] R13: ffff88814a8a8400 R14: 0000000000000001 R15: ffffc90002ed6a80 [ 573.344359][ C1] FS: 0000555556789380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 573.344374][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 573.344386][ C1] CR2: 0000562c17b42538 CR3: 0000000071915000 CR4: 00000000003506e0 [ 573.344401][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 573.344410][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 573.344426][ C1] Call Trace: [ 573.344431][ C1] [ 573.344437][ C1] ? nmi_cpu_backtrace+0x39f/0x4a0 [ 573.344455][ C1] ? read_lock_is_recursive+0x10/0x10 [ 573.344474][ C1] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 573.344492][ C1] ? unknown_nmi_error+0xd0/0xd0 [ 573.344517][ C1] ? nmi_cpu_backtrace_handler+0x8/0x10 [ 573.344534][ C1] ? nmi_handle+0xf7/0x370 [ 573.344552][ C1] ? idr_find+0x27/0x60 [ 573.344566][ C1] ? default_do_nmi+0x62/0x150 [ 573.344585][ C1] ? exc_nmi+0xa8/0x100 [ 573.344601][ C1] ? end_repeat_nmi+0x16/0x31 [ 573.344624][ C1] ? idr_find+0x27/0x60 [ 573.344638][ C1] ? idr_find+0x27/0x60 [ 573.344653][ C1] ? idr_find+0x27/0x60 [ 573.344667][ C1] [ 573.344672][ C1] [ 573.344681][ C1] tcf_idr_check_alloc+0x87/0x380 [ 573.344701][ C1] tcf_police_init+0x294/0x17c0 [ 573.344718][ C1] ? netlink_rcv_skb+0x1cf/0x410 [ 573.344734][ C1] ? netlink_unicast+0x7b6/0x980 [ 573.344753][ C1] ? __se_sys_sendmsg+0x19a/0x260 [ 573.344785][ C1] ? tcf_police_search+0x40/0x40 [ 573.344813][ C1] ? tcf_action_init_1+0x226/0x7f0 [ 573.344829][ C1] ? nla_memcpy+0x56/0xb0 [ 573.344849][ C1] ? memcpy+0x3c/0x60 [ 573.344867][ C1] ? tcf_police_search+0x40/0x40 [ 573.344883][ C1] tcf_action_init_1+0x50f/0x7f0 [ 573.344905][ C1] ? tc_action_load_ops+0x550/0x550 [ 573.344922][ C1] ? read_lock_is_recursive+0x10/0x10 [ 573.344938][ C1] ? rcu_lock_release+0x5/0x20 [ 573.344978][ C1] tcf_action_init+0x2f3/0x750 [ 573.344998][ C1] ? tcf_action_init_1+0x7f0/0x7f0 [ 573.345028][ C1] ? reacquire_held_locks+0x660/0x660 [ 573.345066][ C1] ? apparmor_capable+0x12e/0x190 [ 573.345086][ C1] ? __nla_parse+0x3c/0x50 [ 573.345104][ C1] tc_ctl_action+0x49b/0xd00 [ 573.345133][ C1] ? tcf_free_cookie_rcu+0x40/0x40 [ 573.345150][ C1] ? read_lock_is_recursive+0x10/0x10 [ 573.345200][ C1] ? tcf_free_cookie_rcu+0x40/0x40 [ 573.345218][ C1] rtnetlink_rcv_msg+0x993/0xee0 [ 573.345238][ C1] ? reacquire_held_locks+0x660/0x660 [ 573.345258][ C1] ? rtnetlink_bind+0x80/0x80 [ 573.345276][ C1] ? stack_trace_save+0x1c0/0x1c0 [ 573.345298][ C1] ? __kernel_text_address+0x94/0x100 [ 573.345324][ C1] ? unwind_get_return_address+0x49/0x80 [ 573.345343][ C1] ? reacquire_held_locks+0x660/0x660 [ 573.345359][ C1] ? arch_stack_walk+0xf3/0x140 [ 573.345383][ C1] ? mark_lock+0x98/0x340 [ 573.345407][ C1] ? mark_lock+0x98/0x340 [ 573.345423][ C1] ? __lock_acquire+0x1295/0x1ff0 [ 573.345454][ C1] netlink_rcv_skb+0x1cf/0x410 [ 573.345470][ C1] ? rtnetlink_bind+0x80/0x80 [ 573.345489][ C1] ? netlink_ack+0xb10/0xb10 [ 573.345511][ C1] netlink_unicast+0x7b6/0x980 [ 573.345540][ C1] ? netlink_detachskb+0x90/0x90 [ 573.345558][ C1] ? __virt_addr_valid+0x39e/0x450 [ 573.345579][ C1] ? 0xffffffff81000000 [ 573.345591][ C1] ? __check_object_size+0x300/0x410 [ 573.345610][ C1] ? bpf_lsm_netlink_send+0x5/0x10 [ 573.345628][ C1] netlink_sendmsg+0xa30/0xd60 [ 573.345650][ C1] ? netlink_getsockopt+0x5b0/0x5b0 [ 573.345667][ C1] ? aa_sock_msg_perm+0x91/0x150 [ 573.345685][ C1] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 573.345701][ C1] ? security_socket_sendmsg+0x7d/0xa0 [ 573.345723][ C1] ? netlink_getsockopt+0x5b0/0x5b0 [ 573.345740][ C1] ____sys_sendmsg+0x59e/0x8f0 [ 573.345764][ C1] ? iovec_from_user+0x300/0x390 [ 573.345791][ C1] ? __sys_sendmsg_sock+0x30/0x30 [ 573.345823][ C1] ___sys_sendmsg+0x252/0x2e0 [ 573.345844][ C1] ? __sys_sendmsg+0x260/0x260 [ 573.345867][ C1] ? __lock_acquire+0x1295/0x1ff0 [ 573.345902][ C1] ? __context_tracking_enter+0x5f/0x90 [ 573.345922][ C1] ? __context_tracking_exit+0x4c/0x80 [ 573.345942][ C1] ? __fdget+0x158/0x220 [ 573.345961][ C1] __se_sys_sendmsg+0x19a/0x260 [ 573.345986][ C1] ? __x64_sys_sendmsg+0x80/0x80 [ 573.346010][ C1] ? syscall_enter_from_user_mode+0x2e/0x240 [ 573.346029][ C1] ? lockdep_hardirqs_on+0x94/0x130 [ 573.346048][ C1] ? syscall_enter_from_user_mode+0x2e/0x240 [ 573.346070][ C1] do_syscall_64+0x3b/0xb0 [ 573.346094][ C1] ? clear_bhb_loop+0x15/0x70 [ 573.346118][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 573.346135][ C1] RIP: 0033:0x7f1f6f723df9 [ 573.346151][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 b8 ff ff ff f7 d8 64 89 01 48 [ 573.346169][ C1] RSP: 002b:00007ffdce8e10c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 573.346186][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1f6f723df9 [ 573.346197][ C1] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 573.346208][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 [ 573.346217][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 573.346227][ C1] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 573.346245][ C1] [ 573.346251][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.046 msecs [ 573.352444][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 573.978488][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.161-syzkaller #0 [ 573.986471][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 573.996651][ T27] Call Trace: [ 573.999939][ T27] [ 574.002873][ T27] dump_stack_lvl+0x1e3/0x2d0 [ 574.007561][ T27] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 574.013198][ T27] ? panic+0x860/0x860 [ 574.017288][ T27] panic+0x318/0x860 [ 574.021190][ T27] ? schedule_preempt_disabled+0x20/0x20 [ 574.026848][ T27] ? nmi_trigger_cpumask_backtrace+0x221/0x2a0 [ 574.033016][ T27] ? fb_is_primary_device+0xd0/0xd0 [ 574.038228][ T27] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 574.044307][ T27] ? nmi_trigger_cpumask_backtrace+0x221/0x2a0 [ 574.050469][ T27] ? nmi_trigger_cpumask_backtrace+0x281/0x2a0 [ 574.056632][ T27] ? nmi_trigger_cpumask_backtrace+0x286/0x2a0 [ 574.062795][ T27] watchdog+0xeb0/0xeb0 [ 574.066975][ T27] kthread+0x3f6/0x4f0 [ 574.071051][ T27] ? hungtask_pm_notify+0x50/0x50 [ 574.076085][ T27] ? kthread_blkcg+0xd0/0xd0 [ 574.080686][ T27] ret_from_fork+0x1f/0x30 [ 574.085124][ T27] [ 574.088461][ T27] Kernel Offset: disabled [ 574.092792][ T27] Rebooting in 86400 seconds..