INFO: task syz-executor:5670 blocked for more than 144 seconds.
      Not tainted 6.10.0-rc6-next-20240703-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20144 pid:5670  tgid:5670  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5248 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6600
 __schedule_loop kernel/sched/core.c:6677 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6692
 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
 kthread_stop+0x19e/0x630 kernel/kthread.c:710
 ext4_stop_mmpd+0x47/0xb0 fs/ext4/mmp.c:261
 ext4_put_super+0x753/0xd50 fs/ext4/super.c:1365
 generic_shutdown_super+0x136/0x2d0 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1685
 ext4_kill_sb+0x68/0xa0 fs/ext4/super.c:7303
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1372
 task_work_run+0x24f/0x310 kernel/task_work.c:204
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8a42f76f07
RSP: 002b:00007ffdd9d00058 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8a42f76f07
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdd9d00110
RBP: 00007ffdd9d00110 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdd9d011e0
R13: 00007f8a42fe3515 R14: 0000000000025d8c R15: 000000000000000f
 </TASK>
INFO: task syz-executor:5830 blocked for more than 145 seconds.
      Not tainted 6.10.0-rc6-next-20240703-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20288 pid:5830  tgid:5830  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5248 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6600
 __schedule_loop kernel/sched/core.c:6677 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6692
 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
 kthread_stop+0x19e/0x630 kernel/kthread.c:710
 ext4_stop_mmpd+0x47/0xb0 fs/ext4/mmp.c:261
 ext4_put_super+0x753/0xd50 fs/ext4/super.c:1365
 generic_shutdown_super+0x136/0x2d0 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1685
 ext4_kill_sb+0x68/0xa0 fs/ext4/super.c:7303
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1372
 task_work_run+0x24f/0x310 kernel/task_work.c:204
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f46d2976f07
RSP: 002b:00007ffd3ea8f4c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f46d2976f07
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd3ea8f580
RBP: 00007ffd3ea8f580 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd3ea90650
R13: 00007f46d29e3515 R14: 00000000000286c1 R15: 000000000000000f
 </TASK>
INFO: task kmmpd-loop0:6016 blocked for more than 145 seconds.
      Not tainted 6.10.0-rc6-next-20240703-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kmmpd-loop0     state:D stack:27680 pid:6016  tgid:6016  ppid:2      flags:0x00024000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5248 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6600
 __schedule_loop kernel/sched/core.c:6677 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6692
 percpu_rwsem_wait+0x3c2/0x450 kernel/locking/percpu-rwsem.c:162
 __percpu_down_read+0xee/0x130 kernel/locking/percpu-rwsem.c:177
 percpu_down_read include/linux/percpu-rwsem.h:65 [inline]
 __sb_start_write include/linux/fs.h:1675 [inline]
 sb_start_write include/linux/fs.h:1811 [inline]
 write_mmp_block+0x2f2/0x3a0 fs/ext4/mmp.c:66
 kmmpd+0x26d/0xaa0 fs/ext4/mmp.c:246
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task kmmpd-loop2:6154 blocked for more than 146 seconds.
      Not tainted 6.10.0-rc6-next-20240703-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kmmpd-loop2     state:D stack:27504 pid:6154  tgid:6154  ppid:2      flags:0x00024000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5248 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6600
 __schedule_loop kernel/sched/core.c:6677 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6692
 percpu_rwsem_wait+0x3c2/0x450 kernel/locking/percpu-rwsem.c:162
 __percpu_down_read+0xee/0x130 kernel/locking/percpu-rwsem.c:177
 percpu_down_read include/linux/percpu-rwsem.h:65 [inline]
 __sb_start_write include/linux/fs.h:1675 [inline]
 sb_start_write include/linux/fs.h:1811 [inline]
 write_mmp_block+0x2f2/0x3a0 fs/ext4/mmp.c:66
 kmmpd+0x26d/0xaa0 fs/ext4/mmp.c:246
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:333 [inline]
 #0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:845 [inline]
 #0: ffffffff8e335860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6704
3 locks held by kworker/0:2/927:
2 locks held by getty/4855:
 #0: ffff88802a76b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
3 locks held by kworker/u9:2/5098:
 #0: ffff88806acdc148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
 #0: ffff88806acdc148 ((wq_completion)hci5){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
 #1: ffffc900036e7d00 ((work_completion)(&hdev->error_reset)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
 #1: ffffc900036e7d00 ((work_completion)(&hdev->error_reset)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
 #2: ffff88807b5d0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_open net/bluetooth/hci_core.c:439 [inline]
 #2: ffff88807b5d0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_error_reset+0x15e/0x3f0 net/bluetooth/hci_core.c:1046
3 locks held by kworker/1:5/5148:
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
 #1: ffffc90003f37d00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
 #1: ffffc90003f37d00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
 #2: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
1 lock held by syz-executor/5670:
 #0: ffff8880201340e0 (&type->s_umount_key#33){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff8880201340e0 (&type->s_umount_key#33){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff8880201340e0 (&type->s_umount_key#33){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
1 lock held by syz-executor/5830:
 #0: ffff88802ce840e0 (&type->s_umount_key#33){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88802ce840e0 (&type->s_umount_key#33){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88802ce840e0 (&type->s_umount_key#33){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
1 lock held by kmmpd-loop0/6016:
 #0: ffff888020134420 (sb_writers#4){++++}-{0:0}, at: kmmpd+0x26d/0xaa0 fs/ext4/mmp.c:246
1 lock held by kmmpd-loop2/6154:
 #0: ffff88802ce84420 (sb_writers#4){++++}-{0:0}, at: kmmpd+0x26d/0xaa0 fs/ext4/mmp.c:246
1 lock held by syz-executor/7219:
 #0: ffffffff8e33ac38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
 #0: ffffffff8e33ac38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:980
1 lock held by syz.1.564/7510:
 #0: ffff8880201340e0 (&type->s_umount_key#33){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff8880201340e0 (&type->s_umount_key#33){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.1.564/7515:
 #0: ffff8880201340e0 (&type->s_umount_key#33){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff8880201340e0 (&type->s_umount_key#33){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.2.586/7576:
 #0: ffff88802ce840e0 (&type->s_umount_key#33){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88802ce840e0 (&type->s_umount_key#33){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
2 locks held by syz-executor/7638:
 #0: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline]
 #0: ffffffff8f5ff788 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x847/0x1180 net/core/rtnetlink.c:6725
 #1: ffffffff8e33ac38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
 #1: ffffffff8e33ac38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:980

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-next-20240703-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfee/0x1030 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 1062 Comm: kworker/u8:7 Not tainted 6.10.0-rc6-next-20240703-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:_ieee802_11_parse_elems_full+0x3e36/0x4a40 net/mac80211/parse.c:281
Code: ea f6 49 01 dc 4d 8b 36 48 8b 84 24 00 03 00 00 4c 89 f9 42 80 3c 38 00 48 8b 9c 24 08 03 00 00 74 08 48 89 df e8 0a 91 ea f6 <4c> 03 33 4c 89 f3 4c 29 e3 bf 01 00 00 00 48 89 de e8 c4 ca 83 f6
RSP: 0018:ffffc900042c7180 EFLAGS: 00000246
RAX: 1ffff92000858f4a RBX: ffffc900042c7a50 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900042c74e0
RBP: ffffc900042c7590 R08: ffffc900042c74e7 R09: 1ffff92000858e9c
R10: dffffc0000000000 R11: fffff52000858e9d R12: ffff88807c9cf689
R13: ffff88807c9cf687 R14: ffff88807c9cf674 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b718d1178 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 ieee802_11_parse_elems_full+0xdff/0x2880 net/mac80211/parse.c:984
 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2361 [inline]
 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2368 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1575 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x4c8/0x2d70 net/mac80211/ibss.c:1606
 ieee80211_iface_process_skb net/mac80211/iface.c:1584 [inline]
 ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1638
 cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440
 process_one_work kernel/workqueue.c:3224 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3383
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>