------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2734!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3069 Comm: kworker/u4:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: writeback wb_workfn (flush-7:1)
RIP: 0010:ext4_writepages+0x2d12/0x2d20 fs/ext4/inode.c:2733
Code: c1 03 38 c1 0f 8c b0 fd ff ff 4c 89 e7 e8 c6 c8 b2 ff e9 a3 fd ff ff e8 2c 60 6e ff 0f 0b e8 25 60 6e ff 0f 0b e8 1e 60 6e ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 53 48 89 fb
RSP: 0018:ffffc9000ca4f080 EFLAGS: 00010293
RAX: ffffffff82096bf2 RBX: 0000008410000000 RCX: ffff88802a5fd940
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000ca4f3d0 R08: dffffc0000000000 R09: ffffed100e824a03
R10: ffffed100e824a03 R11: 1ffff1100e824a02 R12: 1ffff92001949ee6
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff888079422000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f29ad4e3000 CR3: 000000001b7a2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x48d/0x6d0 mm/page-writeback.c:2386
 __writeback_single_inode+0x153/0xda0 fs/fs-writeback.c:1657
 writeback_sb_inodes+0x9fe/0x1610 fs/fs-writeback.c:1940
 wb_writeback+0x443/0xb90 fs/fs-writeback.c:2114
 wb_do_writeback fs/fs-writeback.c:2257 [inline]
 wb_workfn+0x423/0xe60 fs/fs-writeback.c:2298
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace ad4aff9eb3e5e1c2 ]---
RIP: 0010:ext4_writepages+0x2d12/0x2d20 fs/ext4/inode.c:2733
Code: c1 03 38 c1 0f 8c b0 fd ff ff 4c 89 e7 e8 c6 c8 b2 ff e9 a3 fd ff ff e8 2c 60 6e ff 0f 0b e8 25 60 6e ff 0f 0b e8 1e 60 6e ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 53 48 89 fb
RSP: 0018:ffffc9000ca4f080 EFLAGS: 00010293
RAX: ffffffff82096bf2 RBX: 0000008410000000 RCX: ffff88802a5fd940
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000ca4f3d0 R08: dffffc0000000000 R09: ffffed100e824a03
R10: ffffed100e824a03 R11: 1ffff1100e824a02 R12: 1ffff92001949ee6
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff888079422000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1759806198 CR3: 000000002ad4b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400