INFO: task syz-executor:4889 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:4889  tgid:4889  ppid:1      task_flags:0x400140 flags:0x00800001
Call trace:
 __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:792 (T)
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x1368/0x2b50 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x13c/0x20c kernel/sched/core.c:7474
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x5d8/0x10b8 kernel/locking/mutex.c:821
 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:874
 del_device_store+0xd8/0x2d4 drivers/net/netdevsim/bus.c:233
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172
 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x260/0x3b8 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x51c/0xa0c fs/read_write.c:687
 ksys_write+0x12c/0x228 fs/read_write.c:739
 __do_sys_write fs/read_write.c:750 [inline]
 __se_sys_write fs/read_write.c:747 [inline]
 __arm64_sys_write+0x84/0x98 fs/read_write.c:747
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606
INFO: task syz-executor:4890 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:4890  tgid:4890  ppid:1      task_flags:0x400140 flags:0x00800001
Call trace:
 __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:792 (T)
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x1368/0x2b50 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x13c/0x20c kernel/sched/core.c:7474
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x5d8/0x10b8 kernel/locking/mutex.c:821
 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:874
 del_device_store+0xd8/0x2d4 drivers/net/netdevsim/bus.c:233
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172
 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x260/0x3b8 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x51c/0xa0c fs/read_write.c:687
 ksys_write+0x12c/0x228 fs/read_write.c:739
 __do_sys_write fs/read_write.c:750 [inline]
 __se_sys_write fs/read_write.c:747 [inline]
 __arm64_sys_write+0x84/0x98 fs/read_write.c:747
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606
INFO: task syz-executor:4896 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:4896  tgid:4896  ppid:1      task_flags:0x400140 flags:0x00800001
Call trace:
 __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:792 (T)
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x1368/0x2b50 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x13c/0x20c kernel/sched/core.c:7474
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x5d8/0x10b8 kernel/locking/mutex.c:821
 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:874
 device_lock include/linux/device.h:1109 [inline]
 device_del+0xa4/0x71c drivers/base/core.c:3929
 device_unregister+0x2c/0xf0 drivers/base/core.c:4008
 nsim_bus_dev_del+0x60/0x8c drivers/net/netdevsim/bus.c:488
 del_device_store+0x24c/0x2d4 drivers/net/netdevsim/bus.c:243
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172
 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x260/0x3b8 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x51c/0xa0c fs/read_write.c:687
 ksys_write+0x12c/0x228 fs/read_write.c:739
 __do_sys_write fs/read_write.c:750 [inline]
 __se_sys_write fs/read_write.c:747 [inline]
 __arm64_sys_write+0x84/0x98 fs/read_write.c:747
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606
INFO: task syz-executor:4897 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:4897  tgid:4897  ppid:4892   task_flags:0x400140 flags:0x00800000
Call trace:
 __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:792 (T)
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x1368/0x2b50 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x13c/0x20c kernel/sched/core.c:7474
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x5d8/0x10b8 kernel/locking/mutex.c:821
 mutex_lock_nested+0x24/0x30 kernel/locking/mutex.c:874
 del_device_store+0xd8/0x2d4 drivers/net/netdevsim/bus.c:233
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172
 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x260/0x3b8 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x51c/0xa0c fs/read_write.c:687
 ksys_write+0x12c/0x228 fs/read_write.c:739
 __do_sys_write fs/read_write.c:750 [inline]
 __se_sys_write fs/read_write.c:747 [inline]
 __arm64_sys_write+0x84/0x98 fs/read_write.c:747
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606

Showing all locks held in the system:
locks held by kworker/0:0/9: 2, last CPU#0:
 #0: ffff0000d9b13148 ((wq_completion)wg-kex-wg0#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000d9b13148 ((wq_completion)wg-kex-wg0#2){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff80008fa17c20 ((work_completion)(&({ do { const void __attribute__((btf_type_tag("percpu"))) *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ((typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))))((unsigned long)((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))) + (((__per_cpu_offset[(cpu)]))))); })->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff80008fa17c20 ((work_completion)(&({ do { const void __attribute__((btf_type_tag("percpu"))) *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ((typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))))((unsigned long)((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))) + (((__per_cpu_offset[(cpu)]))))); })->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
locks held by khungtaskd/31: 1, last CPU#0:
 #0: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 kernel/locking/lockdep.c:6871
locks held by kworker/u8:2/40: 4, last CPU#1:
 #0: ffff0000d3737148 ((wq_completion)wg-kex-wg1){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000d3737148 ((wq_completion)wg-kex-wg1){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff800090f97c20 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff800090f97c20 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
 #2: ffff0000d7265480 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0xe8/0x484 drivers/net/wireguard/noise.c:529
 #3: ffff0000c5ae5c58 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0xf0/0x484 drivers/net/wireguard/noise.c:530
locks held by kworker/u8:3/42: 6, last CPU#1:
 #0: ffff0000c004e148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000c004e148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff800090fb7c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff800090fb7c20 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
 #2: ffff80008abc21c8 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x104/0x6c4 net/core/net_namespace.c:679
 #3: ffff0000c969f128 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1109 [inline]
 #3: ffff0000c969f128 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:124 [inline]
 #3: ffff0000c969f128 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x104/0x390 net/devlink/core.c:581
 #4: ffff0000c969e258 (&devlink->lock_key){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:314 [inline]
 #4: ffff0000c969e258 (&devlink->lock_key){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:125 [inline]
 #4: ffff0000c969e258 (&devlink->lock_key){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x118/0x390 net/devlink/core.c:581
 #5: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:213 [inline]
 #5: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x48/0x64 include/linux/srcu.h:320
locks held by kworker/u8:7/632: 4, last CPU#1:
 #0: ffff0000ce5cc148 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000ce5cc148 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff800093657c20 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff800093657c20 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
 #2: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #2: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x4ec/0x14e0 net/core/dev.c:6896
 #3: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: netif_receive_skb_internal net/core/dev.c:6619 [inline]
 #3: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: netif_receive_skb+0x13c/0x888 net/core/dev.c:6691
locks held by kworker/u8:9/3001: 3, last CPU#1:
 #0: ffff0000c004c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000c004c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff80009b167c20 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff80009b167c20 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
 #2: ffff0000ef640800 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6990 [inline]
 #2: ffff0000ef640800 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xd0/0x464 net/wireless/core.c:596
locks held by kworker/u8:10/3136: 3, last CPU#1:
 #0: ffff0000c004c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000c004c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff80009b707c20 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff80009b707c20 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
 #2: ffff0000ef650800 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6990 [inline]
 #2: ffff0000ef650800 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xd0/0x464 net/wireless/core.c:596
locks held by kworker/u8:12/3566: 2, last CPU#1:
 #0: ffff0000c004b948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000c004b948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff80009b7b7c20 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff80009b7b7c20 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
locks held by kworker/u8:13/3609: 2, last CPU#1:
 #0: ffff0000c004a948 ((wq_completion)events_dfl_long){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000c004a948 ((wq_completion)events_dfl_long){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff80009a9f7c20 ((work_completion)(&(&ipvs->defense_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff80009a9f7c20 ((work_completion)(&(&ipvs->defense_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
locks held by klogd/4339: 1, last CPU#1:
 #0: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff800089aa5660 (rcu_read_lock){....}-{1:3}, at: sock_def_readable+0xdc/0x5d0 net/core/sock.c:3736
locks held by udevd/4350: 1, last CPU#1:
 #0: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:213 [inline]
 #0: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x48/0x64 include/linux/srcu.h:320
locks held by dhcpcd/4406: 3, last CPU#1:
 #0: ffff0000cb6bc200 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:550 [inline]
 #0: ffff0000cb6bc200 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x138/0x1a04 mm/mmap.c:1716
 #1: ffff0000da1f9800 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:540 [inline]
 #1: ffff0000da1f9800 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x208/0x1a04 mm/mmap.c:1723
 #2: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:213 [inline]
 #2: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x48/0x64 include/linux/srcu.h:320
locks held by kworker/1:3/4477: 2, last CPU#1:
 #0: ffff0000efc7c948 ((wq_completion)wg-kex-wg1#4){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000efc7c948 ((wq_completion)wg-kex-wg1#4){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff800097cc7c20 ((work_completion)(&({ do { const void __attribute__((btf_type_tag("percpu"))) *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ((typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))))((unsigned long)((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))) + (((__per_cpu_offset[(cpu)]))))); })->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff800097cc7c20 ((work_completion)(&({ do { const void __attribute__((btf_type_tag("percpu"))) *__vpp_verify = (typeof((worker) + 0))((void *)0); (void)__vpp_verify; } while (0); ((typeof((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))))((unsigned long)((__typeof_unqual__(*((worker))) *)(( unsigned long)((worker)))) + (((__per_cpu_offset[(cpu)]))))); })->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
locks held by getty/4499: 2, on CPU#0:
 #0: ffff0000c999a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff8000932db2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x350/0xffc drivers/tty/n_tty.c:2211
locks held by syz-executor/4730: 1, last CPU#1:
 #0: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:213 [inline]
 #0: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x48/0x64 include/linux/srcu.h:320
locks held by syz-executor/4889: 4, on CPU#0:
 #0: ffff0000cf7ea478 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2762 [inline]
 #0: ffff0000cf7ea478 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x248/0xa0c fs/read_write.c:683
 #1: ffff0000ec0a4c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b0/0x3b8 fs/kernfs/file.c:336
 #2: ffff0000c9e503c8 (kn->active#55){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
 #2: ffff0000c9e503c8 (kn->active#55){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f0/0x3b8 fs/kernfs/file.c:337
 #3: ffff80008a3ad420 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd8/0x2d4 drivers/net/netdevsim/bus.c:233
locks held by syz-executor/4890: 4, on CPU#1:
 #0: ffff0000cf7ea478 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2762 [inline]
 #0: ffff0000cf7ea478 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x248/0xa0c fs/read_write.c:683
 #1: ffff0000eca67080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b0/0x3b8 fs/kernfs/file.c:336
 #2: ffff0000c9e503c8 (kn->active#55){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
 #2: ffff0000c9e503c8 (kn->active#55){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f0/0x3b8 fs/kernfs/file.c:337
 #3: ffff80008a3ad420 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd8/0x2d4 drivers/net/netdevsim/bus.c:233
locks held by syz-executor/4896: 5, on CPU#1:
 #0: ffff0000cf7ea478 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2762 [inline]
 #0: ffff0000cf7ea478 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x248/0xa0c fs/read_write.c:683
 #1: ffff0000ec124c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b0/0x3b8 fs/kernfs/file.c:336
 #2: ffff0000c9e503c8 (kn->active#55){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
 #2: ffff0000c9e503c8 (kn->active#55){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f0/0x3b8 fs/kernfs/file.c:337
 #3: ffff80008a3ad420 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd8/0x2d4 drivers/net/netdevsim/bus.c:233
 #4: ffff0000c969f128 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1109 [inline]
 #4: ffff0000c969f128 (&dev->mutex){....}-{4:4}, at: device_del+0xa4/0x71c drivers/base/core.c:3929
locks held by syz-executor/4897: 4, on CPU#0:
 #0: ffff0000cf7ea478 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2762 [inline]
 #0: ffff0000cf7ea478 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x248/0xa0c fs/read_write.c:683
 #1: ffff0000d9c6e880 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b0/0x3b8 fs/kernfs/file.c:336
 #2: ffff0000c9e503c8 (kn->active#55){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
 #2: ffff0000c9e503c8 (kn->active#55){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f0/0x3b8 fs/kernfs/file.c:337
 #3: ffff80008a3ad420 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd8/0x2d4 drivers/net/netdevsim/bus.c:233
locks held by kworker/u8:14/5028: 3, last CPU#1:
 #0: ffff0000c3d7e948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #0: ffff0000c3d7e948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x8c8/0x1250 kernel/workqueue.c:3578
 #1: ffff8000957e7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3470 [inline]
 #1: ffff8000957e7c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x8d0/0x1250 kernel/workqueue.c:3578
 #2: ffff80008abcf560 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
locks held by syz-executor/5030: 3, last CPU#1:
 #0: ffff0000da1fcc80 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:550 [inline]
 #0: ffff0000da1fcc80 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x138/0x1a04 mm/mmap.c:1716
 #1: ffff0000da1fa280 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:540 [inline]
 #1: ffff0000da1fa280 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x208/0x1a04 mm/mmap.c:1723
 #2: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:213 [inline]
 #2: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x48/0x64 include/linux/srcu.h:320
locks held by udevd/5036: 3, last CPU#1:
 #0: ffff0000d0cb0478 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:531
 #1: ffff800089dffcf8 (tomoyo_ss){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:213 [inline]
 #1: ffff800089dffcf8 (tomoyo_ss){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:320 [inline]
 #1: ffff800089dffcf8 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1112 [inline]
 #1: ffff800089dffcf8 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_perm+0x208/0x460 security/tomoyo/file.c:826
 #2: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:213 [inline]
 #2: ffff800089bcd0b0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x48/0x64 include/linux/srcu.h:320
locks held by dhcpcd/5037: 1, last CPU#1:
 #0: ffff0000d059a4c0 (&sb->s_type->i_mutex_key#12){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1026 [inline]
 #0: ffff0000d059a4c0 (&sb->s_type->i_mutex_key#12){+.+.}-{4:4}, at: __sock_release+0x7c/0x1d4 net/socket.c:734

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