INFO: task syz-executor422:3630 blocked for more than 143 seconds.
      Not tainted 5.16.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor422 state:D stack:26280 pid: 3630 ppid:  3629 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4972 [inline]
 __schedule+0xa9a/0x4900 kernel/sched/core.c:6253
 schedule+0xd2/0x260 kernel/sched/core.c:6326
 io_schedule+0xee/0x170 kernel/sched/core.c:8371
 bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209
 __wait_on_bit_lock+0x121/0x1a0 kernel/sched/wait_bit.c:90
 out_of_line_wait_on_bit_lock+0xd5/0x110 kernel/sched/wait_bit.c:117
 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
 __lock_buffer fs/buffer.c:69 [inline]
 lock_buffer include/linux/buffer_head.h:368 [inline]
 __sync_dirty_buffer+0x35b/0x3f0 fs/buffer.c:3142
 __ext4_handle_dirty_metadata+0x28d/0x720 fs/ext4/ext4_jbd2.c:380
 ext4_convert_inline_data_nolock+0x697/0xe10 fs/ext4/inline.c:1252
 ext4_convert_inline_data+0x31a/0x490 fs/ext4/inline.c:2024
 ext4_punch_hole+0x852/0x1110 fs/ext4/inode.c:3948
 ext4_fallocate+0x1169/0x41d0 fs/ext4/extents.c:4703
 vfs_fallocate+0x48d/0xe10 fs/open.c:307
 ksys_fallocate fs/open.c:330 [inline]
 __do_sys_fallocate fs/open.c:338 [inline]
 __se_sys_fallocate fs/open.c:336 [inline]
 __x64_sys_fallocate+0xcf/0x140 fs/open.c:336
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f97d2561a89
RSP: 002b:00007fffd75a5bc8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f97d2561a89
RDX: 0000000000000000 RSI: 0000000100000003 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 00000000008001a0 R11: 0000000000000246 R12: 00007fffd75a5bf0
R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8bb83da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by getty/3280:
 #0: ffff8880232a7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
 #1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
3 locks held by syz-executor422/3630:
 #0: ffff88801e092460 (sb_writers#5){.+.+}-{0:0}, at: ksys_fallocate fs/open.c:330 [inline]
 #0: ffff88801e092460 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_fallocate fs/open.c:338 [inline]
 #0: ffff88801e092460 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_fallocate fs/open.c:336 [inline]
 #0: ffff88801e092460 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_fallocate+0xcf/0x140 fs/open.c:336
 #1: ffff888073e85550 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:828 [inline]
 #1: ffff888073e85550 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_punch_hole+0x84a/0x1110 fs/ext4/inode.c:3947
 #2: ffff888073e85088 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:142 [inline]
 #2: ffff888073e85088 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x21e/0x490 fs/ext4/inline.c:2022

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

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
 watchdog+0xc1d/0xf50 kernel/hung_task.c:295
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:553