INFO: task syz.6.986:9129 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.986       state:D stack:0     pid:9129  tgid:9128  ppid:8131   flags:0x00000006
Call Trace:
[<ffffffff8608aa96>] context_switch kernel/sched/core.c:5328 [inline]
[<ffffffff8608aa96>] __schedule+0xd58/0x3848 kernel/sched/core.c:6690
[<ffffffff8608d64a>] __schedule_loop kernel/sched/core.c:6767 [inline]
[<ffffffff8608d64a>] schedule+0xc4/0x324 kernel/sched/core.c:6782
[<ffffffff860a03f6>] schedule_timeout+0x1e2/0x296 kernel/time/timer.c:2591
[<ffffffff8608f026>] do_wait_for_common kernel/sched/completion.c:95 [inline]
[<ffffffff8608f026>] __wait_for_common+0x1ca/0x4b6 kernel/sched/completion.c:116
[<ffffffff8608f32c>] wait_for_common kernel/sched/completion.c:127 [inline]
[<ffffffff8608f32c>] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148
[<ffffffff8013c83e>] __flush_work+0x5ee/0xcba kernel/workqueue.c:4217
[<ffffffff8013e51c>] __cancel_work_sync+0x136/0x15a kernel/workqueue.c:4337
[<ffffffff80142830>] cancel_delayed_work_sync+0x1c/0x26 kernel/workqueue.c:4411
[<ffffffff85390efa>] htable_put.part.0+0x1a0/0x278 net/netfilter/xt_hashlimit.c:429
[<ffffffff85393256>] htable_put net/netfilter/xt_hashlimit.c:424 [inline]
[<ffffffff85393256>] hashlimit_mt_destroy+0x7e/0xa6 net/netfilter/xt_hashlimit.c:977
[<ffffffff859932da>] cleanup_match net/ipv6/netfilter/ip6_tables.c:477 [inline]
[<ffffffff859932da>] find_check_entry.constprop.0+0x47a/0x8e4 net/ipv6/netfilter/ip6_tables.c:581
[<ffffffff859955b4>] translate_table+0xc28/0x15da net/ipv6/netfilter/ip6_tables.c:733
[<ffffffff8599bf94>] do_replace+0x2f8/0x432 net/ipv4/netfilter/ip_tables.c:1137
[<ffffffff8599c46c>] do_ip6t_set_ctl+0x39e/0x92a net/ipv6/netfilter/ip6_tables.c:1644
[<ffffffff851bee0e>] nf_setsockopt+0x78/0xda net/netfilter/nf_sockopt.c:101
[<ffffffff85870f60>] ipv6_setsockopt+0x13c/0x16e net/ipv6/ipv6_sockglue.c:998
[<ffffffff858994e8>] rawv6_setsockopt+0xe8/0x64c net/ipv6/raw.c:1054
[<ffffffff84d0dad4>] sock_common_setsockopt+0x90/0xc0 net/core/sock.c:3803
[<ffffffff84d00842>] do_sock_setsockopt+0x20a/0x402 net/socket.c:2334
[<ffffffff84d0a944>] __sys_setsockopt+0xf0/0x1aa net/socket.c:2357
[<ffffffff84d0aaa4>] __do_sys_setsockopt net/socket.c:2366 [inline]
[<ffffffff84d0aaa4>] __se_sys_setsockopt net/socket.c:2363 [inline]
[<ffffffff84d0aaa4>] __riscv_sys_setsockopt+0xa6/0x114 net/socket.c:2363
[<ffffffff8000f2cc>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff86080c5a>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff860a3aaa>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
1 lock held by khungtaskd/37:
 #0: ffffffff881cc080 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
1 lock held by syslogd/2969:
2 locks held by getty/3122:
 #0: ff6000001cbdb0a0 (&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/3149:
3 locks held by kworker/u9:14/3948:
2 locks held by kworker/1:3/6277:
3 locks held by kworker/u9:6/7371:
2 locks held by kworker/u9:5/7643:
 #0: ff60000011471148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff20000003ca7c90 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
2 locks held by kworker/1:5/7711:
2 locks held by syz-executor/8888:
3 locks held by kworker/u9:1/9070:
2 locks held by kworker/u9:7/9663:
3 locks held by kworker/u9:10/9677:
2 locks held by syz.7.977/9682:
2 locks held by modprobe/9690:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a0c>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff86023314>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff8607e98a>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff8607e98a>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff8607ea1a>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85fe69fa>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85fe6cb2>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff8001996c>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432008>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432008>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432008>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154924>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff860a3bc2>] 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: 3777 Comm: kworker/u9:3 Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
Hardware name: riscv-virtio,qemu (DT)
Workqueue: events_unbound nsim_dev_trap_report_work
epc : ___slab_alloc+0x164/0x114c mm/slub.c:3748
 ra : ___slab_alloc+0x524/0x114c mm/slub.c:3709
epc : ffffffff808d5ff4 ra : ffffffff808d63b4 sp : ff2000000d447720
 gp : ffffffff899d48a0 tp : ff6000001a380000 t0 : ff6000001a380b20
 t1 : ff6000001a380bc0 t2 : 000000000000001b s0 : ff2000000d447830
 s1 : ffffffff90d786c0 a0 : 0000000000000000 a1 : ffffffff8663e620
 a2 : 0000000000000006 a3 : 0000000000000002 a4 : 0000000000000001
 a5 : 0000000000000000 a6 : ff6000001a380bb8 a7 : 1fec000003470177
 s2 : ff6000005cdda9b0 s3 : ff6000005cdda9d0 s4 : ffffffffffffffff
 s5 : ffffffffffffffff s6 : ff60000013a988c0 s7 : ffffffff90d786c0
 s8 : ffffffffffffffff s9 : ff1c000000778040 s10: ffffffff89ad3a80
 s11: 0000000000000002 t3 : 1fec000003470163 t4 : 000000000000000e
 t5 : 600bb2318b304e4e t6 : 1fec00000347017c
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff808d5ff4>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff808d5ff4>] ___slab_alloc+0x164/0x114c mm/slub.c:3709
[<ffffffff808d703c>] __slab_alloc.constprop.0+0x60/0xb2 mm/slub.c:3908
[<ffffffff808dba2e>] __slab_alloc_node mm/slub.c:3961 [inline]
[<ffffffff808dba2e>] slab_alloc_node mm/slub.c:4122 [inline]
[<ffffffff808dba2e>] kmem_cache_alloc_node_noprof+0xc8/0x34e mm/slub.c:4186
[<ffffffff84d39ccc>] __alloc_skb+0x32c/0x42a net/core/skbuff.c:668
[<ffffffff833bd872>] alloc_skb include/linux/skbuff.h:1322 [inline]
[<ffffffff833bd872>] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
[<ffffffff833bd872>] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
[<ffffffff833bd872>] nsim_dev_trap_report_work+0x24a/0xc14 drivers/net/netdevsim/dev.c:851
[<ffffffff8013564e>] process_one_work+0x956/0x1dae kernel/workqueue.c:3229
[<ffffffff80137064>] process_scheduled_works kernel/workqueue.c:3310 [inline]
[<ffffffff80137064>] worker_thread+0x5be/0xdc6 kernel/workqueue.c:3391
[<ffffffff80154924>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff860a3bc2>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326