------------[ cut here ]------------ kernel BUG at fs/hfs/inode.c:455! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 1096 Comm: kworker/u4:10 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:hfs_write_inode+0x84e/0x870 fs/hfs/inode.c:455 Code: c7 c1 80 68 82 8b 41 b8 b7 01 00 00 49 c7 c1 20 6b 82 8b 41 ff 36 e8 c1 dc 20 02 48 83 c4 08 e9 76 f8 ff ff e8 d3 49 1f ff 90 <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 99 4c 89 f7 e8 fb 89 86 RSP: 0000:ffffc900027970e0 EFLAGS: 00010293 RAX: ffffffff82a0d99d RBX: ffff8880331f8e98 RCX: ffff888035a94900 RDX: 0000000000000000 RSI: ffffffff8e16d1c0 RDI: 0000000000000000 RBP: ffffc90002797270 R08: ffff888035a94900 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000000 R12: dffffc0000000000 R13: 1ffff920004f2e20 R14: 0000000000000000 R15: ffff8880331f8e58 FS: 0000000000000000(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f06b0848190 CR3: 000000000dd38000 CR4: 0000000000352ef0 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 __writeback_inodes_wb+0x111/0x240 fs/fs-writeback.c:2086 wb_writeback+0x44f/0xaf0 fs/fs-writeback.c:2197 wb_check_start_all fs/fs-writeback.c:2323 [inline] wb_do_writeback fs/fs-writeback.c:2349 [inline] wb_workfn+0x90b/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+0x84e/0x870 fs/hfs/inode.c:455 Code: c7 c1 80 68 82 8b 41 b8 b7 01 00 00 49 c7 c1 20 6b 82 8b 41 ff 36 e8 c1 dc 20 02 48 83 c4 08 e9 76 f8 ff ff e8 d3 49 1f ff 90 <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 99 4c 89 f7 e8 fb 89 86