------------[ cut here ]------------ kernel BUG at fs/hfs/inode.c:474! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 36 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: writeback wb_workfn (flush-7:5) RIP: 0010:hfs_write_inode+0x428/0xab0 fs/hfs/inode.c:474 Code: d1 8b 4c 89 f7 e8 78 6f 10 ff 49 83 fe 03 0f 84 cb 02 00 00 49 83 fe 04 74 12 49 83 fe 02 0f 84 00 fd ff ff e8 49 74 10 ff 90 <0f> 0b e8 41 74 10 ff 48 8d 7d 28 48 b8 00 00 00 00 00 fc ff df 48 RSP: 0018:ffffc90000ac7498 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 1ffff92000158e95 RCX: ffffffff82f7f338 RDX: ffff888021299e40 RSI: ffffffff82f7f357 RDI: ffff888021299e40 RBP: ffff88802af9d5d8 R08: 0000000000000007 R09: 0000000000000004 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90000ac74d8 R14: 0000000000000000 R15: ffffc90000ac7538 FS: 0000000000000000(0000) GS:ffff888124358000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2a6b584cc0 CR3: 000000006c2b7000 CR4: 0000000000350ef0 Call Trace: write_inode fs/fs-writeback.c:1582 [inline] __writeback_single_inode+0xd00/0x13c0 fs/fs-writeback.c:1813 writeback_sb_inodes+0x72e/0x1bf0 fs/fs-writeback.c:2041 wb_writeback+0x1c0/0xbe0 fs/fs-writeback.c:2227 wb_do_writeback fs/fs-writeback.c:2374 [inline] wb_workfn+0x142/0xc00 fs/fs-writeback.c:2414 process_one_work+0x9d7/0x1920 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x5da/0xe40 kernel/workqueue.c:3439 kthread+0x370/0x450 kernel/kthread.c:467 ret_from_fork+0x754/0xd80 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+0x428/0xab0 fs/hfs/inode.c:474 Code: d1 8b 4c 89 f7 e8 78 6f 10 ff 49 83 fe 03 0f 84 cb 02 00 00 49 83 fe 04 74 12 49 83 fe 02 0f 84 00 fd ff ff e8 49 74 10 ff 90 <0f> 0b e8 41 74 10 ff 48 8d 7d 28 48 b8 00 00 00 00 00 fc ff df 48 RSP: 0018:ffffc90000ac7498 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 1ffff92000158e95 RCX: ffffffff82f7f338 RDX: ffff888021299e40 RSI: ffffffff82f7f357 RDI: ffff888021299e40 RBP: ffff88802af9d5d8 R08: 0000000000000007 R09: 0000000000000004 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90000ac74d8 R14: 0000000000000000 R15: ffffc90000ac7538 FS: 0000000000000000(0000) GS:ffff888124358000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feaa43e7198 CR3: 000000006c527000 CR4: 0000000000350ef0