INFO: task syz.7.1580:11617 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1580      state:D stack:23136 pid:11617 tgid:11616 ppid:11063  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7fe/0x1300
 nfnetlink_rcv_msg+0xa6e/0x12c0
 netlink_rcv_skb+0x232/0x4b0
 nfnetlink_rcv+0x2c0/0x27b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x972/0x9f0
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01d7b9c819
RSP: 002b:00007f01d8a89028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f01d7e15fa0 RCX: 00007f01d7b9c819
RDX: 0000000000000004 RSI: 0000200000000780 RDI: 0000000000000006
RBP: 00007f01d7c32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f01d7e16038 R14: 00007f01d7e15fa0 R15: 00007ffe7b214218
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/0:0/9:
4 locks held by kworker/1:0/24:
 #0: ffff888100692d48 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc900001e7c40 ((work_completion)(&(&ssp->srcu_sup->work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8e75f4b8 (&ssp->srcu_sup->srcu_gp_mutex){+.+.}-{4:4}, at: process_srcu+0x6e/0x1220
 #3: ffffffff8e764878 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
3 locks held by kworker/u10:0/27:
 #0: ffff8881000ac148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc90000a27c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8fbceb48 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
3 locks held by kworker/1:1/31:
 #0: ffff888100692d48 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc90000a67c40 ((work_completion)(&(&ssp->srcu_sup->work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8e7bd6b8 (&ssp->srcu_sup->srcu_gp_mutex){+.+.}-{4:4}, at: process_srcu+0x6e/0x1220
1 lock held by khungtaskd/34:
 #0: ffffffff8e75e5e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/1:2/782:
 #0: ffff88810006b148 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc90004d07c40 ((work_completion)(&aux->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8fbceb48 (rtnl_mutex){+.+.}-{4:4}, at: bpf_prog_dev_bound_destroy+0x29/0x400
2 locks held by getty/5631:
 #0: ffff888175d160a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
3 locks held by kworker/u8:4/5910:
 #0: ffff888110dde948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc900064e7c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffffffff8fbceb48 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x11e/0x14c0
2 locks held by syz.1.1555/11505:
1 lock held by syz.7.1580/11617:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz.8.1641/11889:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz.8.1641/11892:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz.9.1672/11997:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz.6.1677/12031:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz.2.1687/12220:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz.3.1678/12280:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz.4.1695/12383:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz.4.1695/12395:
 #0: ffffffff9a7ae7b8 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa6e/0x12c0
1 lock held by syz-executor/12397:
 #0: ffffffff8fbceb48 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
8 locks held by syz-executor/12496:
 #0: ffff88816ebaa420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb90
 #1: ffff8881b70d1088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1de/0x540
 #2: ffff888105359e18 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x231/0x540
 #3: ffffffff8f443108 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd7/0x370
 #4: ffff88810978d130 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb6/0x870
 #5: ffff8881b7fe8250 (&devlink->lock_key#7){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x170
 #6: ffffffff8fbceb48 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0xed/0x680
 #7: ffffffff8e764878 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
1 lock held by syz.0.1715/12593:
 #0: ffffffff8e7ceb68 (event_mutex){+.+.}-{4:4}, at: perf_trace_destroy+0x2e/0x150
1 lock held by syz.0.1715/12594:
 #0: ffffffff8fbceb48 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x722/0xbe0

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 11505 Comm: syz.1.1555 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_is_watching+0x3a/0xb0
Code: e8 fb 36 04 0a 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 90 17 1b 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 9c 48 85 00 48 c7 c3 98 99 1d 93 49 03 1e 48 89
RSP: 0018:ffffc90000006b50 EFLAGS: 00000046
RAX: 1ffffffff1c362f2 RBX: 0000000000000000 RCX: 0000000000010102
RDX: ffffc90000006c01 RSI: ffffffff8c27c9e0 RDI: ffffffff8c27c9a0
RBP: dffffc0000000000 R08: ffffc900040b6970 R09: 0000000000000000
R10: ffffc90000006cf0 R11: fffff52000000da0 R12: ffffc900040b6980
R13: ffffc900040b0000 R14: ffffffff8e1b1790 R15: dffffc0000000000
FS:  00007f7cf6ee96c0(0000) GS:ffff88818de5a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f36e49e7158 CR3: 0000000174128000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x1a66/0x23c0
 perf_callchain_kernel+0x431/0x690
 get_perf_callchain+0x261/0x880
 perf_callchain+0x2df/0x390
 perf_prepare_sample+0x31a/0x22d0
 perf_event_output_forward+0x17d/0x480
 __perf_event_overflow+0x87a/0xec0
 perf_swevent_hrtimer+0x481/0x650
 __hrtimer_run_queues+0x4e7/0xcc0
 hrtimer_interrupt+0x42b/0x1010
 __sysvec_apic_timer_interrupt+0x102/0x460
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 45 45 0d 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 c1 d2 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d fe 7a 73
RSP: 0018:ffffc90000007858 EFLAGS: 00000282
RAX: 7cefb57fe2ff6800 RBX: 0000000000000246 RCX: 0000000000000101
RDX: 000000006dfb1441 RSI: ffffffff8e169f12 RDI: ffffffff8c27ca00
RBP: 0000000000000000 R08: ffffffff81767e95 R09: ffffffff8e75e5e0
R10: dffffc0000000000 R11: ffffffff81b0c390 R12: 0000000000000002
R13: ffffffff8e75e5e0 R14: 0000000000000000 R15: 0000000000000000
 unwind_next_frame+0xc2/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 __rcu_free_sheaf_prepare+0x129/0x290
 rcu_free_sheaf+0x31/0x200
 rcu_core+0x7cd/0x1070
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__schedule+0x15e5/0x52d0
Code: d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 41 3e 80 f6 4c 89 2b 4c 89 e7 4c 89 ee e8 f3 91 83 f5 48 89 c7 e8 2b 46 e5 f5 <31> ff 4d 39 ec 40 0f 95 c7 e8 4d 4f e5 f5 48 8b 84 24 d8 00 00 00
RSP: 0018:ffffc900040b6520 EFLAGS: 00000202
RAX: 000000000057596d RBX: ffff88812103ae48 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8def914b RDI: ffffffff8c27ca00
RBP: ffffc900040b6710 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: ffff8881157657c0
R13: ffff8881157657c0 R14: dffffc0000000000 R15: 1ffff110242075c3
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__vmap_pages_range_noflush+0x7ab/0xf40
Code: 8b 44 24 68 42 80 3c 30 00 74 0c 48 c7 c7 d8 8e 1a 8e e8 e8 3d 12 00 4c 89 ff 48 2b 3d 46 ce fc 0b 48 c1 ff 06 e8 a5 07 00 00 <41> 89 c4 31 ff 89 c6 e8 c9 e5 a7 ff 45 85 e4 0f 84 5c 06 00 00 4c
RSP: 0018:ffffc900040b6840 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff1102249e5cb RCX: ffffc900040b6808
RDX: ffffc90028287000 RSI: 0000000000042e4a RDI: 0000000000042e4b
RBP: ffff8881124f2e58 R08: ffffffff821dc965 R09: ffffffff8e75e6a0
R10: dffffc0000000000 R11: fffffbfff1d10c7b R12: 0000000000000000
R13: 00000000000005a7 R14: dffffc0000000000 R15: ffffea0000eb69c0
 __vmalloc_node_range_noprof+0x11cc/0x1730
 __kvmalloc_node_noprof+0x5ba/0x8a0
 hash_mac_create+0x32c/0xed0
 ip_set_create+0xae6/0x1a40
 nfnetlink_rcv_msg+0xc00/0x12c0
 netlink_rcv_skb+0x232/0x4b0
 nfnetlink_rcv+0x2c0/0x27b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x972/0x9f0
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7cf5f9c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7cf6ee9028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7cf6215fa0 RCX: 00007f7cf5f9c819
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000045
RBP: 00007f7cf6032c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7cf6216038 R14: 00007f7cf6215fa0 R15: 00007fff1b0763a8
 </TASK>
