INFO: task kworker/u10:1:23347 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u10:1   state:D stack:0     pid:23347 tgid:23347 ppid:2      flags:0x00000000
Workqueue: events_unbound bpf_map_free_deferred
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
[<ffffffff85fe6fac>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6824
[<ffffffff85fea828>] __mutex_lock_common kernel/locking/mutex.c:684 [inline]
[<ffffffff85fea828>] __mutex_lock+0x86a/0x1022 kernel/locking/mutex.c:752
[<ffffffff85feaff4>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:804
[<ffffffff802d8130>] rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
[<ffffffff8063b334>] dev_map_free+0x11c/0x6b8 kernel/bpf/devmap.c:214
[<ffffffff804e545c>] bpf_map_free kernel/bpf/syscall.c:744 [inline]
[<ffffffff804e545c>] bpf_map_free_deferred+0x21e/0x46a kernel/bpf/syscall.c:768
[<ffffffff80135b72>] process_one_work+0x956/0x1dae kernel/workqueue.c:3229
[<ffffffff80137588>] process_scheduled_works kernel/workqueue.c:3310 [inline]
[<ffffffff80137588>] worker_thread+0x5be/0xdc6 kernel/workqueue.c:3391
[<ffffffff80154e14>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ffcbde>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326

Showing all locks held in the system:
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 klogd/2998:
2 locks held by getty/3147:
 #0: ff6000001c2b90a0 (&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
6 locks held by kworker/1:1/18122:
 #0: ff600000136bdd48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff20000003877c90 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
 #2: ff6000001bf6b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #2: ff6000001bf6b190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bc/0x48a4 drivers/usb/core/hub.c:5849
 #3: ff6000003f104190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #3: ff6000003f104190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x108/0x8a2 drivers/usb/core/hub.c:2295
 #4: ff6000002c441160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ff6000002c441160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
 #4: ff6000002c441160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x9c/0x572 drivers/base/dd.c:1293
 #5: ffffffff87fdc6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
2 locks held by kworker/0:4/22250:
3 locks held by kworker/u10:1/23347:
 #0: ff60000011071148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff20000002d07c90 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
 #2: ffffffff87fdc6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
5 locks held by kworker/0:7/23464:
2 locks held by kworker/0:9/23495:
7 locks held by syz-executor/23560:
 #0: ff6000001bdda420 (sb_writers#7){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1716 [inline]
 #0: ff6000001bdda420 (sb_writers#7){.+.+}-{0:0}, at: sb_start_write include/linux/fs.h:1852 [inline]
 #0: ff6000001bdda420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline]
 #0: ff6000001bdda420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x728/0x9b4 fs/read_write.c:679
 #1: ff6000001d586888 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x23a/0x460 fs/kernfs/file.c:325
 #2: ff6000001b4d83c8 (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: ff6000003ce090e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #4: ff6000003ce090e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
 #4: ff6000003ce090e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x9c/0x572 drivers/base/dd.c:1293
 #5: ff6000003ce0a250 (&devlink->lock_key#31){+.+.}-{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
1 lock held by syz.1.879/23670:
 #0: ffffffff87fdc6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x56/0x6cc kernel/rcu/tree.c:4561
4 locks held by syz-executor/23711:
 #0: ff6000001bdda420 (sb_writers#7){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1716 [inline]
 #0: ff6000001bdda420 (sb_writers#7){.+.+}-{0:0}, at: sb_start_write include/linux/fs.h:1852 [inline]
 #0: ff6000001bdda420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline]
 #0: ff6000001bdda420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x728/0x9b4 fs/read_write.c:679
 #1: ff6000002b73a488 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x23a/0x460 fs/kernfs/file.c:325
 #2: ff6000001b4d83c8 (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

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #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: 23537 Comm: syz.0.872 Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #0
Hardware name: riscv-virtio,qemu (DT)
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 : ff20000000007450
 gp : ffffffff897bea80 tp : ff6000001ace3480 t0 : ff200000000073d0
 t1 : 0000000000000005 t2 : 000000000000000e s0 : ff200000000074d0
 s1 : ff6000006ec2ebc0 a0 : 0000000000000000 a1 : ffffffff8643e620
 a2 : 0000000000000003 a3 : 0000000000000101 a4 : 0000000000000001
 a5 : 0000000000000000 a6 : 0000000000f00000 a7 : ffffffffb954e376
 s2 : ff60000041aa6400 s3 : ff6000006ec2eca8 s4 : 1fec00000dd85d9b
 s5 : 0000000000000002 s6 : 1fec00000dd85d95 s7 : ff6000006ec2ec60
 s8 : ff6000006ec2ecd8 s9 : 0000000000040cf2 s10: ffffffff87fdc080
 s11: 1fec000003481b75 t3 : 1fec00000359c7f3 t4 : 0000000000000004
 t5 : b7813bd8ef2efd39 t6 : 1fec00000359c802
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
[<ffffffff800e1ebe>] __do_softirq kernel/softirq.c:588 [inline]
[<ffffffff800e1ebe>] invoke_softirq kernel/softirq.c:428 [inline]
[<ffffffff800e1ebe>] __irq_exit_rcu+0x188/0x372 kernel/softirq.c:637
[<ffffffff800e2aec>] irq_exit_rcu+0x10/0xf8 kernel/softirq.c:649
[<ffffffff85fd94f4>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:378
[<ffffffff85ffcc1a>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:355