INFO: task syz.0.809:7979 blocked for more than 143 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.809       state:D stack:24088 pid:7979  tgid:7979  ppid:5832   task_flags:0x40044c 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
 exit_mm+0x73/0x220
 do_exit+0x62e/0x2310
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 irqentry_exit+0x176/0x620
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7f071d86f696
RSP: 002b:00007ffda2d0a300 EFLAGS: 00010202
RAX: 000000110c26c000 RBX: ffffffff824cb660 RCX: 0000000000000004
RDX: 0000000000001660 RSI: 00000000000032d9 RDI: 0000000000000010
RBP: 0000000000000000 R08: 00007f071dc00000 R09: 00007f071dc02000
R10: 00000000824cb664 R11: 0000000000000015 R12: 00007f071dc16038
R13: 000000000000264e R14: ffffffff824cb660 R15: 00007f071e745720
 </TASK>
INFO: task syz.0.809:7982 blocked for more than 143 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.809       state:D stack:24984 pid:7982  tgid:7979  ppid:5832   task_flags:0x40054c flags:0x00080003
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x61e/0x920
 down_read+0x99/0x2e0
 exit_mm+0x73/0x220
 do_exit+0x62e/0x2310
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 exit_to_user_mode_loop+0x86/0x480
 do_syscall_64+0x2b7/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f071d99acb9
RSP: 002b:00007f071e81e0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f071dc16098 RCX: 00007f071d99acb9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f071dc16098
RBP: 00007f071dc16090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f071dc16128 R14: 00007ffda2d0a180 R15: 00007ffda2d0a268
 </TASK>
INFO: task syz.0.809:7986 blocked for more than 144 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.809       state:D stack:28728 pid:7986  tgid:7979  ppid:5832   task_flags:0x40044c 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
 exit_mm+0x73/0x220
 do_exit+0x62e/0x2310
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 exit_to_user_mode_loop+0x86/0x480
 do_syscall_64+0x2b7/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f071d99acb9
RSP: 002b:00007f071e7fd0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f071dc16188 RCX: 00007f071d99acb9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f071dc16188
RBP: 00007f071dc16180 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f071dc16218 R14: 00007ffda2d0a180 R15: 00007ffda2d0a268
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/36:
 #0: ffffffff8e35a3a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
4 locks held by kworker/u10:8/1100:
 #0: ffff888100089948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17a0
 #1: ffffc90007eefbc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17a0
 #2: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
 #3: ffffffff8e360cb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
2 locks held by getty/5657:
 #0: ffff88811181e0a0 (&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/u8:3/5858:
 #0: ffff88816ca36148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17a0
 #1: ffffc90004ec7bc0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17a0
 #2: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x11e/0x14c0
1 lock held by syz-executor/7889:
 #0: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
1 lock held by syz.0.809/7979:
 #0: ffff8881a246a800 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0x73/0x220
8 locks held by syz.0.809/7980:
1 lock held by syz.0.809/7982:
 #0: ffff8881a246a800 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0x73/0x220
1 lock held by syz.0.809/7986:
 #0: ffff8881a246a800 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0x73/0x220
4 locks held by syz-executor/8012:
 #0: ffff88816db50420 (sb_writers#10){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff8881bc3cf390 (&type->i_mutex_dir_key#7/1){+.+.}-{4:4}, at: filename_create+0x200/0x370
 #2: ffffffff8e398d68 (cgroup_mutex){+.+.}-{4:4}, at: cgroup_kn_lock_live+0x13c/0x230
 #3: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: cgrp_css_online+0x91/0x300
3 locks held by syz-executor/8017:
 #0: ffff8881158f6420 (sb_writers#10){.+.+}-{0:0}, at: vfs_write+0x227/0xb90
 #1: ffff888170e82c88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1de/0x540
 #2: ffffffff8e398d68 (cgroup_mutex){+.+.}-{4:4}, at: cgroup_kn_lock_live+0x13c/0x230
3 locks held by kworker/1:7/8028:
 #0: ffff888100076948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9d4/0x17a0
 #1: ffffc90004e27bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0xa0f/0x17a0
 #2: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0xa5/0xf40
7 locks held by syz-executor/8122:
 #0: ffff88816ec2c420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb90
 #1: ffff88802176e888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1de/0x540
 #2: ffff88816c420968 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x231/0x540
 #3: ffffffff8f021568 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd7/0x370
 #4: ffff8881a33f10e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb6/0x800
 #5: ffff8881a33f0250 (&devlink->lock_key#5){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x160
 #6: ffffffff8e360b80 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x580
1 lock held by syz-executor/8137:
 #0: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/8142:
 #0: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
2 locks held by dhcpcd/8147:
 #0: ffff888171cd8260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0
 #1: ffffffff8e360cb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
1 lock held by dhcpcd/8148:
 #0: ffff88816e874260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0
1 lock held by dhcpcd/8149:
 #0: ffff8881a44ca260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0
1 lock held by dhcpcd/8150:
 #0: ffff8881aa51c260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0
1 lock held by dhcpcd/8151:
 #0: ffff8881a859e260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0
1 lock held by syz-executor/8153:
 #0: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/8157:
 #0: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0
1 lock held by syz-executor/8162:
 #0: ffffffff8f7a9288 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x404/0x1ad0

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 36 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: 7980 Comm: syz.0.809 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:native_apic_msr_write+0x39/0x50
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 e9 d0 71 08 0a cc 89 f6 31 d2 e9 d6 a3 5f 03 66 0f 1f 44 00
RSP: 0018:ffffc90000007088 EFLAGS: 00000046
RAX: 000000000000006f RBX: ffff888121023e40 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000000006f RDI: 0000000000000838
RBP: 0000000000000000 R08: ffffffff81b027c5 R09: ffffffff99df0508
R10: 0000000000000003 R11: ffffffff81721570 R12: 000000001000035a
R13: dffffc0000000000 R14: 000000000000006f R15: 0000000000000020
FS:  00007f071e83f6c0(0000) GS:ffff88818e328000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc35c761c49 CR3: 0000000105f16000 CR4: 00000000000006f0
DR0: 00000000000000d4 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lapic_next_event+0x11/0x20
 clockevents_program_event+0x1c9/0x350
 hrtimer_interrupt+0x620/0xaa0
 __sysvec_apic_timer_interrupt+0x102/0x3d0
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:cfg80211_get_ies_channel_number+0x29a/0x8d0
Code: 4d 85 ff 4c 8b 3c 24 0f 84 dc 00 00 00 4d 89 f5 49 8d 5f 01 49 89 dc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 04 <84> c0 75 79 48 89 5c 24 10 0f b6 1b 48 8d 6b 02 4c 89 ef 48 89 ee
RSP: 0018:ffffc900000072f0 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: ffff88817415bc07 RCX: ffff8881692f3a80
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000003
RBP: ffff88817415bbf4 R08: ffff8881692f3a80 R09: 0000000000000002
R10: 0000000000000004 R11: 0000000000000100 R12: 1ffff1102e82b780
R13: 0000000000000016 R14: 0000000000000028 R15: ffff88817415bc06
 cfg80211_inform_single_bss_data+0x286/0x1ab0
 cfg80211_inform_bss_data+0x233/0x3bb0
 cfg80211_inform_bss_frame_data+0x3c7/0x710
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x593/0xa20
 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:pte_offset_map_rw_nolock+0x0/0x160
Code: 41 5e 41 5f 5d e9 90 77 65 09 cc e8 5a 5f ac ff eb d3 e8 53 95 62 09 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 55 41 57 41 56 41 55 41 54 53 4c 89 c3 49 89 cf 49 89
RSP: 0018:ffffc9000924f3d8 EFLAGS: 00000286
RAX: ffff88810a280e00 RBX: 0000000000000000 RCX: ffffc9000924f5a0
RDX: 000055558f9c0000 RSI: ffff8881150823e0 RDI: ffff8881a246a4c0
RBP: ffffc9000924f670 R08: ffffc9000924f5c0 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001249e5c R12: ffff888112cec3e0
R13: 000055558f9c0000 R14: ffff8881a246a4c0 R15: ffff88810a280e00
 copy_pmd_range+0x6c2/0x7f80
 copy_page_range+0xb95/0x11b0
 dup_mmap+0xf70/0x1bb0
 copy_mm+0x13b/0x4b0
 copy_process+0x166e/0x3980
 kernel_clone+0x248/0x870
 __x64_sys_clone+0x1b6/0x230
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f071d99acb9
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:00007f071e83efd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f071dc15fa0 RCX: 00007f071d99acb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000011
RBP: 00007f071da08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f071dc16038 R14: 00007f071dc15fa0 R15: 00007ffda2d0a268
 </TASK>
