------------[ cut here ]------------ kernel BUG at fs/hfs/inode.c:444! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 1158 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Workqueue: writeback wb_workfn (flush-7:3) RIP: 0010:hfs_write_inode+0x7c8/0x7d0 fs/hfs/inode.c:444 Code: c1 80 62 d1 99 80 e1 07 80 c1 03 38 c1 0f 8c 7d fe ff ff 48 c7 c7 80 62 d1 99 e8 13 39 87 ff e9 6c fe ff ff e8 b9 f7 21 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003e1f160 EFLAGS: 00010293 RAX: ffffffff829e5f17 RBX: ffff888050252f18 RCX: ffff888027859e40 RDX: 0000000000000000 RSI: ffffffff8e566780 RDI: 0000000000000000 RBP: ffffc90003e1f2f0 R08: ffff888027859e40 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000000 R12: dffffc0000000000 R13: 1ffff920007c3e30 R14: ffff888050252ed8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125b03000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f823243ff18 CR3: 000000007e2b8000 CR4: 00000000003526f0 Call Trace: write_inode fs/fs-writeback.c:1564 [inline] __writeback_single_inode+0x6f1/0xff0 fs/fs-writeback.c:1784 writeback_sb_inodes+0x6c7/0x1010 fs/fs-writeback.c:2015 wb_writeback+0x43b/0xaf0 fs/fs-writeback.c:2195 wb_do_writeback fs/fs-writeback.c:2342 [inline] wb_workfn+0x409/0xef0 fs/fs-writeback.c:2382 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 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+0x7c8/0x7d0 fs/hfs/inode.c:444 Code: c1 80 62 d1 99 80 e1 07 80 c1 03 38 c1 0f 8c 7d fe ff ff 48 c7 c7 80 62 d1 99 e8 13 39 87 ff e9 6c fe ff ff e8 b9 f7 21 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003e1f160 EFLAGS: 00010293 RAX: ffffffff829e5f17 RBX: ffff888050252f18 RCX: ffff888027859e40 RDX: 0000000000000000 RSI: ffffffff8e566780 RDI: 0000000000000000 RBP: ffffc90003e1f2f0 R08: ffff888027859e40 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000000 R12: dffffc0000000000 R13: 1ffff920007c3e30 R14: ffff888050252ed8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125b03000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0f424a3000 CR3: 000000007efee000 CR4: 00000000003526f0