INFO: task syz-executor.5:22664 blocked for more than 143 seconds.
      Not tainted 6.3.0-syzkaller-11733-g825a0714d2b3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5  state:D stack:24568 pid:22664 ppid:29747  flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0x187b/0x4900 kernel/sched/core.c:6669
 schedule+0xc3/0x180 kernel/sched/core.c:6745
 wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
 wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:751
 lock_extent+0x1ce/0x280 fs/btrfs/extent-io-tree.c:1742
 btrfs_page_mkwrite+0x556/0xc90 fs/btrfs/inode.c:8127
 do_page_mkwrite+0x1a4/0x600 mm/memory.c:2931
 wp_page_shared mm/memory.c:3280 [inline]
 do_wp_page+0x501/0x3690 mm/memory.c:3362
 handle_pte_fault mm/memory.c:4964 [inline]
 __handle_mm_fault mm/memory.c:5089 [inline]
 handle_mm_fault+0x2371/0x5860 mm/memory.c:5243
 do_user_addr_fault arch/x86/mm/fault.c:1440 [inline]
 handle_page_fault arch/x86/mm/fault.c:1534 [inline]
 exc_page_fault+0x7d2/0x910 arch/x86/mm/fault.c:1590
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x33/0xb0 arch/x86/lib/copy_user_64.S:56
Code: 46 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:ffffc9000c2174c8 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 00007fffffffefc8 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc9000c217580 RDI: 00000000200012e0
RBP: ffffc9000c217638 R08: dffffc0000000000 R09: fffff52001842eb7
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000038
R13: 00000000200012e0 R14: 00000000200012e0 R15: ffffc9000c217580
 copy_user_generic arch/x86/include/asm/uaccess_64.h:31 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:52 [inline]
 _copy_to_user+0x10c/0x150 lib/usercopy.c:41
 copy_to_user include/linux/uaccess.h:191 [inline]
 fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:144
 emit_fiemap_extent+0x259/0x410 fs/btrfs/extent_io.c:2846
 extent_fiemap+0xed4/0x1fc0 fs/btrfs/extent_io.c:3336
 btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7799
 ioctl_fiemap fs/ioctl.c:219 [inline]
 do_vfs_ioctl+0x19ba/0x2b10 fs/ioctl.c:810
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl+0x81/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f083568c169
RSP: 002b:00007f08363e8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f08357ac050 RCX: 00007f083568c169
RDX: 00000000200012c0 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007f08356e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe920a01af R14: 00007f08363e8300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
 #0: ffffffff8cf277b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
 #0: ffffffff8cf27b70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
 #0: ffffffff8cf275e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4747:
 #0: ffff88814aae6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
2 locks held by syz-executor.4/5033:
 #0: ffff88809432a0e0 (&type->s_umount_key#88){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
 #1: ffffffff8cf2ccb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
 #1: ffffffff8cf2ccb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
2 locks held by kworker/0:24/13157:
 #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
 #1: ffffc900160f7d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
4 locks held by syz-executor.5/22664:
 #0: ffff8880389ea1a0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline]
 #0: ffff8880389ea1a0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:170
 #1: ffff8880297cd268 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:161 [inline]
 #1: ffff8880297cd268 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1381 [inline]
 #1: ffff8880297cd268 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1534 [inline]
 #1: ffff8880297cd268 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x1b9/0x910 arch/x86/mm/fault.c:1590
 #2: ffff88803c58a558 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x1a4/0x600 mm/memory.c:2931
 #3: ffff8880389ea028 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x427/0xc90 fs/btrfs/inode.c:8116

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-11733-g825a0714d2b3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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+0x187/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xec2/0xf00 kernel/hung_task.c:379
 kthread+0x2b8/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4447 Comm: udevd Not tainted 6.3.0-syzkaller-11733-g825a0714d2b3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:192 [inline]
RIP: 0010:unwind_next_frame+0x249/0x2200 arch/x86/kernel/unwind_orc.c:466
Code: 48 8d 8c 09 d8 22 cc 8e 48 39 c1 0f 87 c9 03 00 00 45 39 e0 0f 84 cd 03 00 00 4e 8d 34 a5 88 9a 61 8e 45 29 e0 4b 8d 6c 86 fc <4d> 89 f4 4c 39 f5 0f 83 f3 01 00 00 4d 29 f4 49 be 00 00 00 00 00
RSP: 0018:ffffc900031bf030 EFLAGS: 00000206
RAX: ffffffff8f6bef50 RBX: ffffffff8f6dd694 RCX: ffffffff8ed4ed80
RDX: ffffffff8ed4ed6e RSI: 000000000009e001 RDI: ffffffff813cecb0
RBP: ffffffff8e6776f4 R08: 0000000000000003 R09: ffffc900031bf1f0
R10: ffffc900031bf150 R11: dffffc0000000001 R12: 0000000000017719
R13: 00000000000079d0 R14: ffffffff8e6776ec R15: ffffffff8179d0a6
FS:  00007f9b1beb9c80(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f790b786058 CR3: 000000002c7e5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3786 [inline]
 __kmem_cache_free+0x264/0x3c0 mm/slub.c:3799
 tomoyo_realpath_from_path+0x5a3/0x5e0 security/tomoyo/realpath.c:286
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x254/0x4e0 security/tomoyo/file.c:771
 security_file_open+0x63/0xa0 security/security.c:2797
 do_dentry_open+0x308/0x10f0 fs/open.c:907
 do_open fs/namei.c:3636 [inline]
 path_openat+0x27b3/0x3170 fs/namei.c:3791
 do_filp_open+0x234/0x490 fs/namei.c:3818
 do_sys_openat2+0x13f/0x500 fs/open.c:1356
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9b1bf8f9a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffc09e7b9c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000558a1d542040 RCX: 00007f9b1bf8f9a4
RDX: 0000000000080141 RSI: 0000558a1d5250d8 RDI: 00000000ffffff9c
RBP: 0000558a1d5250d8 R08: 00000000ffffffff R09: 0000000000000000
R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141
R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff
 </TASK>