INFO: task syz-executor150:5075 blocked for more than 143 seconds.
      Not tainted 6.3.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor150 state:D stack:25328 pid:5075  ppid:5074   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5304 [inline]
 __schedule+0xc91/0x5770 kernel/sched/core.c:6622
 schedule+0xde/0x1a0 kernel/sched/core.c:6698
 io_schedule+0xbe/0x130 kernel/sched/core.c:8884
 bit_wait_io+0x16/0xe0 kernel/sched/wait_bit.c:209
 __wait_on_bit_lock+0x11f/0x1a0 kernel/sched/wait_bit.c:90
 out_of_line_wait_on_bit_lock+0xd9/0x110 kernel/sched/wait_bit.c:117
 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
 __lock_buffer fs/buffer.c:70 [inline]
 lock_buffer include/linux/buffer_head.h:400 [inline]
 __sync_dirty_buffer+0x30e/0x380 fs/buffer.c:2780
 __ext4_handle_dirty_metadata+0x2b7/0x8e0 fs/ext4/ext4_jbd2.c:387
 ext4_convert_inline_data_nolock+0x6e6/0xf10 fs/ext4/inline.c:1254
 ext4_convert_inline_data+0x51a/0x5f0 fs/ext4/inline.c:2065
 ext4_fallocate+0x19f/0x3d90 fs/ext4/extents.c:4701
 vfs_fallocate+0x48b/0xe40 fs/open.c:324
 ioctl_preallocate+0x18e/0x200 fs/ioctl.c:290
 file_ioctl fs/ioctl.c:333 [inline]
 do_vfs_ioctl+0x1306/0x1670 fs/ioctl.c:849
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x10c/0x210 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8750122539
RSP: 002b:00007ffc2b205978 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8750122539
RDX: 0000000020000140 RSI: 0000000040305829 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000012 R11: 0000000000000246 R12: 00007ffc2b2059a0
R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8c794b70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8c794870 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffffffff8c7956c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by getty/4754:
 #0: ffff88802bf6c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by syz-executor150/5075:
 #0: ffff888077614460 (sb_writers#4){.+.+}-{0:0}, at: ioctl_preallocate+0x18e/0x200 fs/ioctl.c:290
 #1: ffff888076a50e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #1: ffff888076a50e08 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x197/0x3d90 fs/ext4/extents.c:4700
 #2: ffff888076a50ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
 #2: ffff888076a50ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x352/0x5f0 fs/ext4/inline.c:2063

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x2a4/0x300 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+0xe16/0x1090 kernel/hung_task.c:379
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.3.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:load_balance+0xa0b/0x2c40 kernel/sched/fair.c:10690
Code: fb 01 0f 86 07 17 00 00 48 c7 c0 20 fd 4b 8a 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 <38> d0 7c 08 84 d2 0f 85 8b 21 00 00 4c 8b 64 24 60 c7 44 24 5c 00
RSP: 0018:ffffc900001e0c00 EFLAGS: 00000206
RAX: 0000000000000003 RBX: 0000000000000002 RCX: 1ffffffff1497fa4
RDX: 0000000000000004 RSI: ffff8880b983c280 RDI: ffff88801667f43c
RBP: ffffc900001e0de0 R08: 0000000000000000 R09: ffffffff8e77bfd7
R10: fffffbfff1cef7fa R11: 00000000000003ff R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880b983c280 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056523db57680 CR3: 00000000297b0000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 rebalance_domains+0x68b/0xc60 kernel/sched/fair.c:11099
 _nohz_idle_balance.isra.0+0x4cd/0x6d0 kernel/sched/fair.c:11529
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_call_function_single+0x97/0xc0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x40/0x50 drivers/acpi/processor_idle.c:113
Code: eb 03 83 e3 01 89 de 0f 1f 44 00 00 84 db 75 1b 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d f7 b3 af 00 0f 1f 44 00 00 fb f4 <fa> 5b c3 cc 0f 1f 00 66 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 0f
RSP: 0018:ffffc90000177d20 EFLAGS: 00000246
RAX: ffff8880167d9d40 RBX: 0000000000000000 RCX: ffffffff8a01e175
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880177d4064 R08: 0000000000000001 R09: ffff8880b9936cab
R10: ffffed1017326d95 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880177d4000 R14: ffff8880177d4064 R15: 0000000000000000
 acpi_idle_do_entry+0x53/0x70 drivers/acpi/processor_idle.c:573
 acpi_idle_enter+0x173/0x290 drivers/acpi/processor_idle.c:711
 cpuidle_enter_state+0xd3/0x6f0 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
 cpuidle_idle_call kernel/sched/idle.c:215 [inline]
 do_idle+0x305/0x3e0 kernel/sched/idle.c:282
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379
 start_secondary+0x221/0x2b0 arch/x86/kernel/smpboot.c:264
 secondary_startup_64_no_verify+0xce/0xdb
 </TASK>