INFO: task syz-executor:4790 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00009-g9510c5b0db36 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:4790  tgid:4790  ppid:1      flags:0x00000006
Call Trace:
[<ffffffff85fe3a74>] context_switch kernel/sched/core.c:5315 [inline]
[<ffffffff85fe3a74>] __schedule+0xd5a/0x3886 kernel/sched/core.c:6675
[<ffffffff85fe6664>] __schedule_loop kernel/sched/core.c:6752 [inline]
[<ffffffff85fe6664>] schedule+0xc4/0x324 kernel/sched/core.c:6767
[<ffffffff85ff9412>] schedule_timeout+0x1e2/0x296 kernel/time/timer.c:2591
[<ffffffff85fe8042>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff85fe8042>] __wait_for_common+0x1ca/0x4b6 kernel/sched/completion.c:116
[<ffffffff85fe8348>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff85fe8348>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff802d83b6>] rcu_barrier+0x2dc/0x6cc kernel/rcu/tree.c:4629
[<ffffffff84d323f6>] netdev_run_todo+0x294/0x105e net/core/dev.c:10778
[<ffffffff84d5e85e>] rtnl_unlock+0x14/0x1c net/core/rtnetlink.c:152
[<ffffffff83317408>] nsim_destroy+0x178/0x5fe drivers/net/netdevsim/netdev.c:785
[<ffffffff83318646>] __nsim_dev_port_del+0x168/0x236 drivers/net/netdevsim/dev.c:1425
[<ffffffff8331c69c>] nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1437 [inline]
[<ffffffff8331c69c>] nsim_dev_reload_destroy+0x11c/0x452 drivers/net/netdevsim/dev.c:1658
[<ffffffff8331e142>] nsim_drv_remove+0x54/0x1b6 drivers/net/netdevsim/dev.c:1673
[<ffffffff8332b9ee>] nsim_bus_remove+0x1a/0x24 drivers/net/netdevsim/bus.c:398
[<ffffffff8280d1b6>] device_remove+0xba/0x15c drivers/base/dd.c:567
[<ffffffff82810762>] __device_release_driver drivers/base/dd.c:1273 [inline]
[<ffffffff82810762>] device_release_driver_internal+0x3f0/0x572 drivers/base/dd.c:1296
[<ffffffff82810902>] device_release_driver+0x1e/0x28 drivers/base/dd.c:1319
[<ffffffff8280b72a>] bus_remove_device+0x1f4/0x3d2 drivers/base/bus.c:576
[<ffffffff827fc64e>] device_del+0x324/0x898 drivers/base/core.c:3864
[<ffffffff827fcbea>] device_unregister+0x28/0xe0 drivers/base/core.c:3905
[<ffffffff8332bd54>] nsim_bus_dev_del drivers/net/netdevsim/bus.c:462 [inline]
[<ffffffff8332bd54>] del_device_store+0x338/0x48c drivers/net/netdevsim/bus.c:226
[<ffffffff82807fd6>] bus_attr_store+0x6a/0x9e drivers/base/bus.c:172
[<ffffffff80c863f8>] sysfs_kf_write+0xe0/0x140 fs/sysfs/file.c:136
[<ffffffff80c8352a>] kernfs_fop_write_iter+0x2cc/0x460 fs/kernfs/file.c:334
[<ffffffff80a27428>] new_sync_write fs/read_write.c:590 [inline]
[<ffffffff80a27428>] vfs_write+0x4d4/0x9b4 fs/read_write.c:683
[<ffffffff80a27d2a>] ksys_write+0x128/0x266 fs/read_write.c:736
[<ffffffff80a27ed6>] __do_sys_write fs/read_write.c:748 [inline]
[<ffffffff80a27ed6>] __se_sys_write fs/read_write.c:745 [inline]
[<ffffffff80a27ed6>] __riscv_sys_write+0x6e/0x94 fs/read_write.c:745
[<ffffffff8000f2d4>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85fd9c4a>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
2 locks held by kworker/0:0/8:
1 lock held by khungtaskd/37:
 #0: ffffffff87fcc100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
2 locks held by kworker/u10:2/44:
 #0: ff60000011071148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff20000000367c90 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
2 locks held by kworker/0:2/1467:
1 lock held by klogd/2999:
2 locks held by getty/3148:
 #0: ff6000001d2c70a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ff2000000008b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd7c/0x129a drivers/tty/n_tty.c:2211
1 lock held by syz-executor/3175:
2 locks held by kworker/0:3/3818:
2 locks held by kworker/0:4/3875:
2 locks held by kworker/0:5/3917:
2 locks held by kworker/0:6/4340:
1 lock held by syz.1.260/4772:
 #0: ffffffff87fdc6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
2 locks held by kworker/0:8/4787:
7 locks held by syz-executor/4790:
 #0: ff6000001c608420 (sb_writers#7){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1716 [inline]
 #0: ff6000001c608420 (sb_writers#7){.+.+}-{0:0}, at: sb_start_write include/linux/fs.h:1852 [inline]
 #0: ff6000001c608420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline]
 #0: ff6000001c608420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x728/0x9b4 fs/read_write.c:679
 #1: ff6000003353dc88 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x23a/0x460 fs/kernfs/file.c:325
 #2: ff6000001b9f2c38 (kn->active#4){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x258/0x460 fs/kernfs/file.c:326
 #3: ffffffff88c129e8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xf0/0x48c drivers/net/netdevsim/bus.c:216
 #4: ff60000018e960e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ff60000018e960e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
 #4: ff60000018e960e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x9c/0x572 drivers/base/dd.c:1293
 #5: ff60000018e95250 (&devlink->lock_key#2){+.+.}-{3:3}, at: devl_lock+0x22/0x2c net/devlink/core.c:276
 #6: ffffffff87fdc6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
2 locks held by kworker/0:9/4839:
2 locks held by kworker/0:10/4943:
1 lock held by syz.0.283/5100:
 #0: ffffffff87fdc6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
4 locks held by syz-executor/5140:
 #0: ff6000001c608420 (sb_writers#7){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1716 [inline]
 #0: ff6000001c608420 (sb_writers#7){.+.+}-{0:0}, at: sb_start_write include/linux/fs.h:1852 [inline]
 #0: ff6000001c608420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline]
 #0: ff6000001c608420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x728/0x9b4 fs/read_write.c:679
 #1: ff6000003468bc88 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x23a/0x460 fs/kernfs/file.c:325
 #2: ff6000001b9f2c38 (kn->active#4){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x258/0x460 fs/kernfs/file.c:326
 #3: ffffffff88c129e8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xf0/0x48c drivers/net/netdevsim/bus.c:216
2 locks held by kworker/0:12/5154:
5 locks held by kworker/0:13/5284:
2 locks held by kworker/0:14/5445:
2 locks held by kworker/0:15/5446:
4 locks held by modprobe/5452:

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00009-g9510c5b0db36 #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a14>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff85f7c3cc>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff85fd797a>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff85fd797a>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff85fd7a0a>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85f3faae>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85f3fd66>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff80019974>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432c3c>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432c3c>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432c3c>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154e14>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ffcbde>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5284 Comm: kworker/0:13 Not tainted 6.12.0-rc1-syzkaller-00009-g9510c5b0db36 #0
Hardware name: riscv-virtio,qemu (DT)
Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker
epc : __call_rcu_common.constprop.0+0x292/0x934 kernel/rcu/tree.c:3109
 ra : __call_rcu_common.constprop.0+0x284/0x934 kernel/rcu/tree.c:3108
epc : ffffffff802e216a ra : ffffffff802e215c sp : ff200000000074c0
 gp : ffffffff897bea80 tp : ff6000001e933480 t0 : ff20000000007440
 t1 : 0000000000000001 t2 : 000000000000000e s0 : ff20000000007540
 s1 : ff6000006ec2ebc0 a0 : 0000000000000000 a1 : ffffffff8643e620
 a2 : 0000000000000003 a3 : 0000000000000101 a4 : 0000000000000001
 a5 : 0000000000000000 a6 : ff6000001e933fe8 a7 : 1fec000003d267fd
 s2 : ff60000038fa01c0 s3 : ff6000006ec2eca8 s4 : 1fec00000dd85d9b
 s5 : 0000000000000002 s6 : 1fec00000dd85d95 s7 : ff6000006ec2ec60
 s8 : ff6000006ec2ecd8 s9 : 000000000003a0ca s10: ffffffff87fdc080
 s11: 1fec0000050fd0ad t3 : 1fec000003d267f3 t4 : 0000000000000004
 t5 : b7813bd8ef2efd39 t6 : 1fec000003d2680c
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff802e216a>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff802e216a>] __call_rcu_common.constprop.0+0x292/0x934 kernel/rcu/tree.c:3108
[<ffffffff802e282c>] call_rcu+0xc/0x14 kernel/rcu/tree.c:3190
[<ffffffff808da400>] slab_free_hook mm/slub.c:2307 [inline]
[<ffffffff808da400>] slab_free mm/slub.c:4580 [inline]
[<ffffffff808da400>] kmem_cache_free+0x43e/0x5f4 mm/slub.c:4682
[<ffffffff8513d62e>] nf_conntrack_free+0x10c/0x4a4 net/netfilter/nf_conntrack_core.c:1735
[<ffffffff8513db3c>] nf_ct_destroy+0x176/0x272 net/netfilter/nf_conntrack_core.c:598
[<ffffffff85143d72>] nf_ct_put include/net/netfilter/nf_conntrack.h:186 [inline]
[<ffffffff85143d72>] nf_ct_put include/net/netfilter/nf_conntrack.h:183 [inline]
[<ffffffff85143d72>] nf_conntrack_in+0x728/0x1b28 net/netfilter/nf_conntrack_core.c:2061
[<ffffffff8515405c>] ipv4_conntrack_in+0x20/0x2e net/netfilter/nf_conntrack_proto.c:207
[<ffffffff85112730>] nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
[<ffffffff85112730>] nf_hook_slow+0xb8/0x1ec net/netfilter/core.c:626
[<ffffffff85330816>] nf_hook include/linux/netfilter.h:269 [inline]
[<ffffffff85330816>] NF_HOOK include/linux/netfilter.h:312 [inline]
[<ffffffff85330816>] ip_rcv+0x20e/0x44e net/ipv4/ip_input.c:569
[<ffffffff84d21a54>] __netif_receive_skb_one_core+0x106/0x16e net/core/dev.c:5662
[<ffffffff84d21cd4>] __netif_receive_skb+0x2c/0x144 net/core/dev.c:5775
[<ffffffff84d22d58>] process_backlog+0x4fc/0x1cbc net/core/dev.c:6107
[<ffffffff84d2760a>] __napi_poll.constprop.0+0xaa/0x4b8 net/core/dev.c:6771
[<ffffffff84d2842a>] napi_poll net/core/dev.c:6840 [inline]
[<ffffffff84d2842a>] net_rx_action+0xa12/0xf10 net/core/dev.c:6962
[<ffffffff800e0fba>] handle_softirqs+0x4a6/0x10de kernel/softirq.c:554
[<ffffffff85ffccb8>] __do_softirq+0x12/0x1a kernel/softirq.c:588
[<ffffffff80006f74>] ___do_softirq+0x18/0x20 arch/riscv/kernel/irq.c:85
[<ffffffff85ffcc1a>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:355