INFO: task udevd:8127 blocked for more than 143 seconds. Not tainted 6.15.0-rc6-syzkaller-ga82e92598ab1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:0 pid:8127 tgid:8127 ppid:6106 task_flags:0x400140 flags:0x00000008 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 rwsem_down_write_slowpath+0xa80/0x10f0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1578 inode_lock include/linux/fs.h:867 [inline] open_last_lookups fs/namei.c:3797 [inline] path_openat+0x638/0x2c40 fs/namei.c:4036 do_filp_open+0x18c/0x36c fs/namei.c:4066 do_sys_openat2+0x11c/0x1b4 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1455 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by kthreadd/2: 1 lock held by kworker/R-kvfre/6: #0: ffff80008f3b0ee8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 2 locks held by kworker/0:0/9: 4 locks held by kworker/0:1/11: #0: ffff0000cb8eed48 ((wq_completion)wg-kex-wg1#2){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff800097647bc0 ((work_completion)(&({ do { const void *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ({ unsigned long __ptr; __ptr = (unsigned long) ((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))); (typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker))))) (__ptr + (((__per_cpu_offset[(cpu)])))); }); })->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff0000cc471308 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x130/0x748 drivers/net/wireguard/noise.c:598 #3: ffff0000ce9c1708 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_consume_initiation+0x414/0x748 drivers/net/wireguard/noise.c:632 4 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/13: 1 lock held by kworker/R-mm_pe/14: #0: ffff80008f3b0ee8 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 2 locks held by kworker/1:0/24: 3 locks held by kworker/1:1/26: 1 lock held by khungtaskd/32: #0: ffff80008f5088a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/44: 3 locks held by kworker/u8:3/45: 3 locks held by kworker/u8:4/280: 3 locks held by kworker/u8:5/474: 3 locks held by kworker/u8:6/486: 4 locks held by kworker/u8:7/535: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009c8c7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248b428 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000fde58768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline] #3: ffff0000fde58768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_leave_invalid_chans net/wireless/reg.c:2471 [inline] #3: ffff0000fde58768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_check_chans_work+0x11c/0xd88 net/wireless/reg.c:2486 3 locks held by kworker/u8:8/578: 3 locks held by kworker/u8:9/630: 4 locks held by kworker/u8:10/733: 2 locks held by kworker/1:2/1769: 1 lock held by kworker/R-dm_bu/3411: #0: ffff80008f3b0ee8 (wq_pool_attach_mutex ){+.+.}-{4:4}, at: raw_spin_rq_lock_nested kernel/sched/core.c:605 [inline] ){+.+.}-{4:4}, at: raw_spin_rq_lock kernel/sched/sched.h:1513 [inline] ){+.+.}-{4:4}, at: rq_lock kernel/sched/sched.h:1837 [inline] ){+.+.}-{4:4}, at: __schedule+0x338/0x28d4 kernel/sched/core.c:6691 3 locks held by kworker/R-ipv6_/4141: #0: ffff0000d2778148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a0667ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248b428 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by kworker/R-bat_e/4222: 3 locks held by dhcpcd/6161: 3 locks held by kworker/0:3/6237: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a4207bc0 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248b428 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by getty/6259: #0: ffff0000d6fc10a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b60b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222 3 locks held by syz-executor/6491: 2 locks held by syz-executor/6492: