INFO: task kworker/u4:9:2886 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:9    state:D stack:20880 pid:2886  tgid:2886  ppid:2      flags:0x00004000
Workqueue: btrfs-endio-write btrfs_work_helper
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x4960 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 wait_extent_bit fs/btrfs/extent-io-tree.c:822 [inline]
 lock_extent+0x69d/0x850 fs/btrfs/extent-io-tree.c:1868
 btrfs_finish_one_ordered+0x591/0x16e0 fs/btrfs/inode.c:3092
 btrfs_work_helper+0x37c/0xbe0 fs/btrfs/async-thread.c:315
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
INFO: task syz-executor.1:16120 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:22320 pid:16120 tgid:16021 ppid:5081   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x4960 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
 rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
 inode_lock include/linux/fs.h:802 [inline]
 btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:387
 btrfs_sync_file+0x55d/0x1330 fs/btrfs/file.c:1824
 generic_write_sync include/linux/fs.h:2735 [inline]
 btrfs_do_write_iter+0xbc5/0x1190 fs/btrfs/file.c:1697
 call_write_iter include/linux/fs.h:2085 [inline]
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0xa74/0xca0 fs/read_write.c:590
 ksys_write+0x1a0/0x2c0 fs/read_write.c:643
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff7fa87cda9
RSP: 002b:00007ff7fb66f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff7fa9ac050 RCX: 00007ff7fa87cda9
RDX: 0000000000000018 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007ff7fa8c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff7fa9ac050 R15: 00007ffd41660d88
 </TASK>
INFO: task syz-executor.1:16125 blocked for more than 145 seconds.
      Not tainted 6.8.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:23544 pid:16125 tgid:16021 ppid:5081   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x4960 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 wait_extent_bit fs/btrfs/extent-io-tree.c:822 [inline]
 lock_extent+0x69d/0x850 fs/btrfs/extent-io-tree.c:1868
 btrfs_page_mkwrite+0x743/0x10c0 fs/btrfs/inode.c:8176
 do_page_mkwrite+0x197/0x470 mm/memory.c:2966
 wp_page_shared mm/memory.c:3353 [inline]
 do_wp_page+0x20e3/0x4c80 mm/memory.c:3493
 handle_pte_fault mm/memory.c:5160 [inline]
 __handle_mm_fault+0x26a3/0x72b0 mm/memory.c:5285
 handle_mm_fault+0x27e/0x770 mm/memory.c:5450
 do_user_addr_fault arch/x86/mm/fault.c:1415 [inline]
 handle_page_fault arch/x86/mm/fault.c:1507 [inline]
 exc_page_fault+0x2ad/0x870 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc900161b7530 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020001618 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc900161b75e0 RDI: 00000000200015e0
RBP: ffffc900161b7690 R08: ffffc900161b7617 R09: 1ffff92002c36ec2
R10: dffffc0000000000 R11: fffff52002c36ec3 R12: 0000000000000038
R13: ffffc900161b75e0 R14: 00000000200015e0 R15: ffffc900161b75e0
 copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:133 [inline]
 _copy_to_user+0x86/0xa0 lib/usercopy.c:41
 copy_to_user include/linux/uaccess.h:191 [inline]
 fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:145
 emit_last_fiemap_cache fs/btrfs/extent_io.c:2555 [inline]
 extent_fiemap+0x1b9c/0x1fe0 fs/btrfs/extent_io.c:3082
 btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7844
 ioctl_fiemap fs/ioctl.c:220 [inline]
 do_vfs_ioctl+0x19ea/0x2b40 fs/ioctl.c:811
 __do_sys_ioctl fs/ioctl.c:869 [inline]
 __se_sys_ioctl+0x81/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff7fa87cda9
RSP: 002b:00007ff7fb64e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff7fa9ac120 RCX: 00007ff7fa87cda9
RDX: 00000000200015c0 RSI: 00000000c020660b RDI: 0000000000000004
RBP: 00007ff7fa8c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff7fa9ac120 R15: 00007ffd41660d88
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/u4:0/11:
1 lock held by khungtaskd/29:
 #0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u5:0/51:
 #0: ffff888020b8e138 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888020b8e138 ((wq_completion)hci6){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc90000bbfd20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc90000bbfd20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffff8880782d9060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1e0/0x400 net/bluetooth/hci_sync.c:305
3 locks held by kworker/u4:9/2886:
 #0: ffff88807e054538 ((wq_completion)btrfs-endio-write#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff88807e054538 ((wq_completion)btrfs-endio-write#2){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc9000a017d20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc9000a017d20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffff888023a36490 (btrfs_ordered_extent){++++}-{0:0}, at: btrfs_finish_one_ordered+0x347/0x16e0 fs/btrfs/inode.c:3052
2 locks held by getty/4807:
 #0: ffff888029e5a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.3/5097:
 #0: ffffffff8d9348b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
 #0: ffffffff8d9348b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:996
2 locks held by kworker/1:5/5141:
2 locks held by kworker/1:1/13455:
 #0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc90003337d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc90003337d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
3 locks held by syz-executor.1/16120:
 #0: ffff88807ec66d48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
 #1: ffff88807e4d4420 (sb_writers#18){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2795 [inline]
 #1: ffff88807e4d4420 (sb_writers#18){.+.+}-{0:0}, at: vfs_write+0x233/0xca0 fs/read_write.c:586
 #2: ffff88803b328e10 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
 #2: ffff88803b328e10 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:387
4 locks held by syz-executor.1/16125:
 #0: ffff88803b328e10 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
 #0: ffff88803b328e10 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:379
 #1: ffff88807d79baa0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
 #1: ffff88807d79baa0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5477 [inline]
 #1: ffff88807d79baa0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5537
 #2: ffff88807e4d4518 (sb_pagefaults#4){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2966
 #3: ffff88803b328c98 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x603/0x10c0 fs/btrfs/inode.c:8165
1 lock held by udevd/16269:
 #0: ffff88801b4959c0 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline]
 #0: ffff88801b4959c0 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfaf/0xff0 kernel/hung_task.c:379
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11 Comm: kworker/u4:0 Not tainted 6.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:__lock_acquire+0xea1/0x1fd0
Code: 29 d0 89 d6 c1 c6 08 31 c6 01 ca 29 f1 89 f3 c1 c3 10 31 cb 01 d6 29 da 89 dd c1 c5 13 31 d5 01 f3 29 ee 01 eb c1 c5 04 31 f5 <48> c1 e5 20 48 c7 c0 00 64 02 8f 48 c1 e8 03 0f b6 04 38 84 c0 0f
RSP: 0018:ffffc90000107630 EFLAGS: 00000082
RAX: 0000000059b4b5e6 RBX: 000000009e4af561 RCX: 0000000071073853
RDX: 00000000139a73ad RSI: 000000005449dea0 RDI: dffffc0000000000
RBP: 00000000917648e0 R08: ffffffff90df73e7 R09: 1ffffffff21bee7c
R10: dffffc0000000000 R11: fffffbfff21bee7d R12: 0000000016eaeb6b
R13: ffff8880156d3b80 R14: 0000000000000000 R15: ffff8880156d3b80
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556d19978 CR3: 0000000030c7a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
 rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 rcu_read_lock include/linux/rcupdate.h:750 [inline]
 ieee80211_update_sta_info net/mac80211/ibss.c:983 [inline]
 ieee80211_rx_bss_info net/mac80211/ibss.c:1096 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1577 [inline]
 ieee80211_ibss_rx_queued_mgmt+0xf51/0x2cc0 net/mac80211/ibss.c:1604
 ieee80211_iface_process_skb net/mac80211/iface.c:1589 [inline]
 ieee80211_iface_work+0x805/0xd90 net/mac80211/iface.c:1643
 cfg80211_wiphy_work+0x21e/0x250 net/wireless/core.c:437
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>