------------[ cut here ]------------ kernel BUG at fs/hfs/inode.c:450! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4438 Comm: kworker/u4:8 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 Workqueue: writeback wb_workfn (flush-7:4) pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfs_write_inode+0x8e4/0x8e8 fs/hfs/inode.c:450 lr : hfs_write_inode+0x8e4/0x8e8 fs/hfs/inode.c:450 sp : ffff800021677320 x29: ffff800021677460 x28: 1fffe0001f504456 x27: 1fffe0001f504440 x26: dfff800000000000 x25: ffff8000216773a0 x24: dfff800000000000 x23: ffff800021677320 x22: ffff7000042cee64 x21: 0000000000020080 x20: 0000000000000000 x19: ffff0000fa8221d8 x18: 0000000000000000 x17: ffff800008fcce50 x16: ffff800011bb65f8 x15: 0000000000000000 x14: 0000000000000004 x13: 0000000000ff0100 x12: ffff80001577e848 x11: ff00800008fcd4a4 x10: 0000000000000000 x9 : ffff800008fcd4a4 x8 : ffff0000ceb93800 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020 x2 : 0000000000000006 x1 : ffff80001577e820 x0 : 0000000000000000 Call trace: hfs_write_inode+0x8e4/0x8e8 fs/hfs/inode.c:450 write_inode fs/fs-writeback.c:1521 [inline] __writeback_single_inode+0x5e0/0x157c fs/fs-writeback.c:1738 writeback_sb_inodes+0x870/0x1470 fs/fs-writeback.c:1964 wb_writeback+0x40c/0xfdc fs/fs-writeback.c:2138 wb_do_writeback fs/fs-writeback.c:2281 [inline] wb_workfn+0x360/0xe18 fs/fs-writeback.c:2321 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 Code: aa1303e0 97e4a2ff 17ffff9a 97d3962f (d4210000) ---[ end trace 0000000000000000 ]---