------------[ cut here ]------------ kernel BUG at fs/hfs/inode.c:474! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 UID: 0 PID: 144 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 Workqueue: writeback wb_workfn (flush-7:4) RIP: 0010:hfs_write_inode+0x934/0x960 fs/hfs/inode.c:474 Code: 40 31 ff e8 0e 81 17 ff 81 e3 00 00 00 40 75 1c e8 c1 7c 17 ff 48 bb f8 f8 f8 f8 f8 f8 f8 f8 e9 dc f7 ff ff e8 ad 7c 17 ff 90 <0f> 0b e8 a5 7c 17 ff e8 50 38 86 fe eb dd 44 89 f1 80 e1 07 80 c1 RSP: 0018:ffffc90002e571e0 EFLAGS: 00010293 RAX: ffffffff82acc673 RBX: ffff888024f18818 RCX: ffff888020300000 RDX: 0000000000000000 RSI: ffffffff8e9c3140 RDI: 0000000000000000 RBP: ffffc90002e57368 R08: ffff888020300000 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000000 R12: dffffc0000000000 R13: 1ffff920005cae40 R14: 0000000000000000 R15: ffff888024f187d8 FS: 0000000000000000(0000) GS:ffff8881255a0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f61ad264000 CR3: 000000005cfd8000 CR4: 0000000000350ef0 Call Trace: write_inode fs/fs-writeback.c:1582 [inline] __writeback_single_inode+0x75a/0x1060 fs/fs-writeback.c:1813 writeback_sb_inodes+0x92e/0x1940 fs/fs-writeback.c:2041 wb_writeback+0x445/0xad0 fs/fs-writeback.c:2227 wb_do_writeback fs/fs-writeback.c:2374 [inline] wb_workfn+0x3f8/0xef0 fs/fs-writeback.c:2414 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 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+0x934/0x960 fs/hfs/inode.c:474 Code: 40 31 ff e8 0e 81 17 ff 81 e3 00 00 00 40 75 1c e8 c1 7c 17 ff 48 bb f8 f8 f8 f8 f8 f8 f8 f8 e9 dc f7 ff ff e8 ad 7c 17 ff 90 <0f> 0b e8 a5 7c 17 ff e8 50 38 86 fe eb dd 44 89 f1 80 e1 07 80 c1 RSP: 0018:ffffc90002e571e0 EFLAGS: 00010293 RAX: ffffffff82acc673 RBX: ffff888024f18818 RCX: ffff888020300000 RDX: 0000000000000000 RSI: ffffffff8e9c3140 RDI: 0000000000000000 RBP: ffffc90002e57368 R08: ffff888020300000 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000000 R12: dffffc0000000000 R13: 1ffff920005cae40 R14: 0000000000000000 R15: ffff888024f187d8 FS: 0000000000000000(0000) GS:ffff8881254a0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa807fe9358 CR3: 000000005cfbb000 CR4: 0000000000350ef0