------------[ cut here ]------------ kernel BUG at fs/hfs/inode.c:476! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 67 Comm: kworker/u8:4 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Workqueue: writeback wb_workfn (flush-7:3) RIP: 0010:hfs_write_inode+0x95e/0x990 fs/hfs/inode.c:476 Code: 89 de 81 e6 00 00 00 40 31 ff e8 0d 82 17 ff 81 e3 00 00 00 40 75 15 e8 50 7d 17 ff 4c 89 f3 e9 b1 f7 ff ff e8 43 7d 17 ff 90 <0f> 0b e8 3b 7d 17 ff e8 f6 d2 84 fe eb e4 44 89 e1 80 e1 07 80 c1 RSP: 0018:ffffc9000152f220 EFLAGS: 00010293 RAX: ffffffff82ad9b3d RBX: f8f8f8f8f8f8f8f8 RCX: ffff88801c3c9f00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000152f3a8 R08: ffff88801c3c9f00 R09: 0000000000000003 R10: 0000000000000100 R11: 0000000000000004 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888062da14b8 R15: 1ffff920002a5e48 FS: 0000000000000000(0000) GS:ffff888125ed4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560881ede7b0 CR3: 0000000043b7a000 CR4: 00000000003526f0 Call Trace: write_inode fs/fs-writeback.c:1607 [inline] __writeback_single_inode+0x6af/0xf90 fs/fs-writeback.c:1850 writeback_sb_inodes+0x9db/0x1ab0 fs/fs-writeback.c:2079 wb_writeback+0x41c/0xad0 fs/fs-writeback.c:2264 wb_do_writeback fs/fs-writeback.c:2432 [inline] wb_workfn+0x437/0x10f0 fs/fs-writeback.c:2477 process_one_work+0x93a/0x12b0 kernel/workqueue.c:3326 process_scheduled_works kernel/workqueue.c:3409 [inline] worker_thread+0xb05/0x10d0 kernel/workqueue.c:3490 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hfs_write_inode+0x95e/0x990 fs/hfs/inode.c:476 Code: 89 de 81 e6 00 00 00 40 31 ff e8 0d 82 17 ff 81 e3 00 00 00 40 75 15 e8 50 7d 17 ff 4c 89 f3 e9 b1 f7 ff ff e8 43 7d 17 ff 90 <0f> 0b e8 3b 7d 17 ff e8 f6 d2 84 fe eb e4 44 89 e1 80 e1 07 80 c1 RSP: 0018:ffffc9000152f220 EFLAGS: 00010293 RAX: ffffffff82ad9b3d RBX: f8f8f8f8f8f8f8f8 RCX: ffff88801c3c9f00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000152f3a8 R08: ffff88801c3c9f00 R09: 0000000000000003 R10: 0000000000000100 R11: 0000000000000004 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888062da14b8 R15: 1ffff920002a5e48 FS: 0000000000000000(0000) GS:ffff888125ed4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560881ede7b0 CR3: 0000000030558000 CR4: 00000000003526f0