------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2806!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 168 Comm: kworker/u8:8 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: writeback wb_workfn (flush-7:3)
RIP: 0010:ext4_do_writepages+0x46dd/0x46e0 fs/ext4/inode.c:2805
Code: c6 c0 3e e4 8b e8 53 c4 a1 fe 90 0f 0b e8 2b 57 40 ff 4c 89 f7 48 c7 c6 a0 43 e4 8b e8 3c c4 a1 fe 90 0f 0b e8 14 57 40 ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40
RSP: 0018:ffffc90002e46d60 EFLAGS: 00010293
RAX: ffffffff82865c0c RBX: 0000004210000000 RCX: ffff888020745b80
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc90002e47170 R08: ffff888059789ca7 R09: 1ffff1100b2f1394
R10: dffffc0000000000 R11: ffffed100b2f1395 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000004000000000 R15: 1ffff1100c3decc5
FS:  0000000000000000(0000) GS:ffff888125436000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f388244eddd CR3: 000000008aafe000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3022
 do_writepages+0x32e/0x550 mm/page-writeback.c:2554
 __writeback_single_inode+0x133/0x11a0 fs/fs-writeback.c:1750
 writeback_sb_inodes+0x992/0x1a20 fs/fs-writeback.c:2042
 wb_writeback+0x456/0xb70 fs/fs-writeback.c:2227
 wb_do_writeback fs/fs-writeback.c:2374 [inline]
 wb_workfn+0x414/0xf50 fs/fs-writeback.c:2414
 process_one_work+0x9ab/0x1780 kernel/workqueue.c:3288
 process_scheduled_works kernel/workqueue.c:3379 [inline]
 worker_thread+0xba8/0x11e0 kernel/workqueue.c:3465
 kthread+0x388/0x470 kernel/kthread.c:436
 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+0x46dd/0x46e0 fs/ext4/inode.c:2805
Code: c6 c0 3e e4 8b e8 53 c4 a1 fe 90 0f 0b e8 2b 57 40 ff 4c 89 f7 48 c7 c6 a0 43 e4 8b e8 3c c4 a1 fe 90 0f 0b e8 14 57 40 ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40
RSP: 0018:ffffc90002e46d60 EFLAGS: 00010293

RAX: ffffffff82865c0c RBX: 0000004210000000 RCX: ffff888020745b80
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc90002e47170 R08: ffff888059789ca7 R09: 1ffff1100b2f1394
R10: dffffc0000000000 R11: ffffed100b2f1395 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000004000000000 R15: 1ffff1100c3decc5
FS:  0000000000000000(0000) GS:ffff888125436000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f38825e92f8 CR3: 000000007e788000 CR4: 00000000003526f0