------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2810!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 37 Comm: kworker/u8:2 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-7:3)
RIP: 0010:ext4_do_writepages+0x45f4/0x4600 fs/ext4/inode.c:2809
Code: c6 00 e1 c3 8b e8 0c 56 a5 fe 90 0f 0b e8 44 bc 41 ff 4c 89 f7 48 c7 c6 e0 e5 c3 8b e8 f5 55 a5 fe 90 0f 0b e8 2d bc 41 ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000ad6d40 EFLAGS: 00010293
RAX: ffffffff8282bbc3 RBX: 0000006210000000 RCX: ffff888141ac9e40
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc90000ad7150 R08: ffff8880543509f7 R09: 1ffff1100a86a13e
R10: dffffc0000000000 R11: ffffed100a86a13f R12: dffffc0000000000
R13: 0000000000000001 R14: 0000004000000000 R15: 1ffff1100fa034c7
FS:  0000000000000000(0000) GS:ffff8881257c8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000012a CR3: 000000005c7cc000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3026
 do_writepages+0x32e/0x550 mm/page-writeback.c:2598
 __writeback_single_inode+0x133/0x1060 fs/fs-writeback.c:1750
 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:3257 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
 worker_thread+0xda6/0x1360 kernel/workqueue.c:3421
 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
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x45f4/0x4600 fs/ext4/inode.c:2809
Code: c6 00 e1 c3 8b e8 0c 56 a5 fe 90 0f 0b e8 44 bc 41 ff 4c 89 f7 48 c7 c6 e0 e5 c3 8b e8 f5 55 a5 fe 90 0f 0b e8 2d bc 41 ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000ad6d40 EFLAGS: 00010293
RAX: ffffffff8282bbc3 RBX: 0000006210000000 RCX: ffff888141ac9e40
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc90000ad7150 R08: ffff8880543509f7 R09: 1ffff1100a86a13e
R10: dffffc0000000000 R11: ffffed100a86a13f R12: dffffc0000000000
R13: 0000000000000001 R14: 0000004000000000 R15: 1ffff1100fa034c7
FS:  0000000000000000(0000) GS:ffff8881257c8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e263e7198 CR3: 0000000059ced000 CR4: 0000000000350ef0