------------[ cut here ]------------
WARNING: CPU: 0 PID: 6120 at fs/bcachefs/fs-io-buffered.c:456 bch2_writepage_io_done+0x6fc/0x7b4 fs/bcachefs/fs-io-buffered.c:456
Modules linked in:
CPU: 0 UID: 0 PID: 6120 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: bcachefs bch2_write_point_do_index_updates
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : bch2_writepage_io_done+0x6fc/0x7b4 fs/bcachefs/fs-io-buffered.c:456
lr : bch2_writepage_io_done+0x6fc/0x7b4 fs/bcachefs/fs-io-buffered.c:456
sp : ffff8000a0c178d0
x29: ffff8000a0c17940 x28: dfff800000000000 x27: 0000000000000003
x26: ffff0000d1404008 x25: ffff0000d1404008 x24: ffff0000eb800000
x23: ffff0000d1404160 x22: 0000000000000008 x21: ffff0000d1404180
x20: 1fffe0001a28082c x19: 0000000000000c00 x18: 00000000ffffffff
x17: ffff800093524000 x16: ffff80008af7ae08 x15: 0000000000000006
x14: 1ffff00014182f21 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700014182f27 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000d7578000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff8000936fc048 x4 : 0000000000000008 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000008 x0 : 0000000000000000
Call trace:
 bch2_writepage_io_done+0x6fc/0x7b4 fs/bcachefs/fs-io-buffered.c:456 (P)
 bch2_write_done+0x26c/0x314 fs/bcachefs/io_write.c:556
 bch2_write_point_do_index_updates+0x7c/0x4f0 fs/bcachefs/io_write.c:723
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3400
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
irq event stamp: 6364
hardirqs last  enabled at (6363): [<ffff80008b035f68>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (6363): [<ffff80008b035f68>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194
hardirqs last disabled at (6364): [<ffff80008b00ebb4>] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574
softirqs last  enabled at (6166): [<ffff8000803d8b60>] softirq_handle_end kernel/softirq.c:425 [inline]
softirqs last  enabled at (6166): [<ffff8000803d8b60>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607
softirqs last disabled at (6073): [<ffff800080022028>] __do_softirq+0x14/0x20 kernel/softirq.c:613
---[ end trace 0000000000000000 ]---
Bluetooth: hci0: command tx timeout