INFO: task syz.4.1739:2580 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1739      state:D stack:24632 pid:2580  tgid:2579  ppid:1223   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x61e/0x920
 down_read+0x99/0x2e0
 super_lock+0x2d6/0x3d0
 user_get_super+0xc8/0x120
 __se_sys_quotactl+0x516/0x990
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe91799acb9
RSP: 002b:00007fe91881e028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fe917c15fa0 RCX: 00007fe91799acb9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: ffffffff80000801
RBP: 00007fe917a08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe917c16038 R14: 00007fe917c15fa0 R15: 00007ffd645be158
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e35a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by kworker/u10:2/69:
2 locks held by kworker/1:2/795:
2 locks held by getty/5639:
 #0: ffff888175a960a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
3 locks held by kworker/u8:3/5840:
 #0: ffff888111ee4948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17a0
 #1: ffffc90005507bc0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17a0
 #2: ffffffff8f7a9d48 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x11e/0x14c0
4 locks held by kworker/u8:4/8093:
 #0: ffff888100ef7948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17a0
 #1: ffffc90007a8fbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17a0
 #2: ffffffff8f79b3d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xfe/0x7b0
 #3: ffff88816c9414e8 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_destruct+0x116/0x310
2 locks held by syz-executor/21826:
3 locks held by kworker/0:6/1769:
 #0: ffff888100075948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17a0
 #1: ffffc900052bfbc0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17a0
 #2: ffff8881b2eca240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x202/0x3d0
1 lock held by syz.4.1739/2580:
 #0: ffff88810d2a80e0 (&type->s_umount_key#56){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
6 locks held by syz-executor/9237:
3 locks held by syz.2.2063/9925:
1 lock held by modprobe/9965:
2 locks held by dhcpcd-run-hook/9967:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 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+0xf90/0xfe0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 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: 9237 Comm: syz-executor 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:kasan_check_range+0x97/0x2c0
Code: 00 fc ff df 4d 8d 34 19 4d 89 f4 4d 29 dc 49 83 fc 10 7f 29 4d 85 e4 0f 84 3d 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00 <0f> 85 9e 01 00 00 49 ff c3 48 ff c3 75 ee e9 1d 01 00 00 44 89 dd
RSP: 0018:ffffc900000072e0 EFLAGS: 00000246
RAX: 1ffff92000000f01 RBX: ffffffffffffffff RCX: ffffffff8ac8d343
RDX: 0000000000000000 RSI: 0000000000000028 RDI: ffff888109f88074
RBP: ffffc90000007530 R08: ffff888109f8809b R09: 1ffff110213f1013
R10: dffffc0000000000 R11: ffffed10213f1013 R12: 0000000000000006
R13: dffffc0000000000 R14: ffffed10213f1014 R15: 1ffff110213f100e
FS:  0000555593ab4500(0000) GS:ffff88818e326000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f58c3f435c0 CR3: 0000000192a2a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __asan_memcpy+0x29/0x70
 cfg80211_inform_single_bss_data+0xa83/0x1ab0
 cfg80211_inform_bss_data+0x233/0x3bb0
 cfg80211_inform_bss_frame_data+0x3c7/0x710
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x552/0xa40
 ieee80211_rx_list+0x2508/0x3050
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/0x7c0
 __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:console_flush_all+0x801/0xb20
Code: ff ff e8 42 52 20 00 90 0f 0b 90 e9 85 fc ff ff e8 34 52 20 00 e8 ef 87 d6 09 48 85 db 74 c0 e8 25 52 20 00 fb 48 8b 5c 24 08 <48> 8b 44 24 20 42 80 3c 20 00 4c 8b 74 24 18 74 08 4c 89 f7 e8 46
RSP: 0018:ffffc90004e7e700 EFLAGS: 00000293
RAX: ffffffff81a2473b RBX: ffffc90004e7e860 RCX: ffff8881a183d7c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004e7e810 R08: ffffffff8fceef77 R09: 1ffffffff1f9ddee
R10: dffffc0000000000 R11: fffffbfff1f9ddef R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff8ebee140
 console_unlock+0xd1/0x1c0
 vprintk_emit+0x485/0x560
 dev_vprintk_emit+0x355/0x420
 dev_printk_emit+0xee/0x140
 __netdev_printk+0x3e1/0x480
 netdev_info+0x11e/0x180
 netif_change_name+0x895/0x960
 do_setlink+0xb6c/0x4590
 rtnl_newlink+0x15a9/0x1be0
 rtnetlink_rcv_msg+0x7d5/0xbe0
 netlink_rcv_skb+0x232/0x4b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40
 __sock_sendmsg+0x21c/0x270
 __sys_sendto+0x3c0/0x550
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58c315b58e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fff563c31a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000555593ab4500 RCX: 00007f58c315b58e
RDX: 0000000000000030 RSI: 00007f58c3f43610 RDI: 0000000000000006
RBP: 0000000000000001 R08: 00007fff563c3224 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 0000000000000000 R14: 00007f58c3f43610 R15: 0000000000000000
 </TASK>
