------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2564! invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 PID: 50 Comm: kworker/u8:3 Not tainted 6.9.0-rc7-syzkaller-00117-g448b3fe5a0ea #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: writeback wb_workfn (flush-7:5) RIP: 0010:ext4_do_writepages+0x3d38/0x3d40 fs/ext4/inode.c:2563 Code: 4f 8e 4c 89 f2 e8 f8 00 90 02 e9 ab fb ff ff e8 de bf 3c ff 90 0f 0b e8 d6 bf 3c ff 90 0f 0b e8 ee 03 27 09 e8 c9 bf 3c 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:ffffc90000ba6c00 EFLAGS: 00010293 RAX: ffffffff825948b7 RBX: 0000004000000000 RCX: ffff88801baf1e00 RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000 RBP: ffffc90000ba7010 R08: ffffffff82591093 R09: 1ffff1100f57000a R10: dffffc0000000000 R11: ffffed100f57000b R12: 0000000000000001 R13: 0000000004208160 R14: 0000006210000000 R15: ffff88807ab802b0 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c125000 CR3: 0000000024ff8000 CR4: 0000000000350ef0 Call Trace: ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2768 do_writepages+0x35b/0x870 mm/page-writeback.c:2612 __writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1650 writeback_sb_inodes+0x905/0x1260 fs/fs-writeback.c:1941 wb_writeback+0x457/0xce0 fs/fs-writeback.c:2117 wb_do_writeback fs/fs-writeback.c:2264 [inline] wb_workfn+0x410/0x1090 fs/fs-writeback.c:2304 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3348 worker_thread+0x86d/0xd70 kernel/workqueue.c:3429 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_do_writepages+0x3d38/0x3d40 fs/ext4/inode.c:2563 Code: 4f 8e 4c 89 f2 e8 f8 00 90 02 e9 ab fb ff ff e8 de bf 3c ff 90 0f 0b e8 d6 bf 3c ff 90 0f 0b e8 ee 03 27 09 e8 c9 bf 3c 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:ffffc90000ba6c00 EFLAGS: 00010293 RAX: ffffffff825948b7 RBX: 0000004000000000 RCX: ffff88801baf1e00 RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000 RBP: ffffc90000ba7010 R08: ffffffff82591093 R09: 1ffff1100f57000a R10: dffffc0000000000 R11: ffffed100f57000b R12: 0000000000000001 R13: 0000000004208160 R14: 0000006210000000 R15: ffff88807ab802b0 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33923000 CR3: 0000000024ff8000 CR4: 0000000000350ef0