------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2761!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: writeback wb_workfn
 (flush-7:5)
RIP: 0010:ext4_writepages+0x2ff8/0x3020 fs/ext4/inode.c:2760
Code: 85 86 ff 84 db 75 31 e8 a6 82 86 ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 18 4c 8b 6c 24 38 e9 a2 f7 ff ff e8 88 82 86 ff <0f> 0b e8 81 82 86 ff e8 28 df 16 ff eb 93 e8 75 82 86 ff e8 1c df
RSP: 0018:ffffc900000a7120 EFLAGS: 00010293
RAX: ffffffff81e99b78 RBX: 000000c410000000 RCX: ffff88810029e540
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900000a7490 R08: dffffc0000000000 R09: ffffed10249d689f
R10: ffffed10249d689f R11: 1ffff110249d689e R12: dffffc0000000000
R13: ffff888124eb4608 R14: 0000008000000000 R15: ffff888124eb44f0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558fda4818 CR3: 000000010fd5f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3a9/0x5e0 mm/page-writeback.c:2494
 __writeback_single_inode+0xc6/0xad0 fs/fs-writeback.c:1612
 writeback_sb_inodes+0x9b8/0x1550 fs/fs-writeback.c:1903
 wb_writeback+0x3f1/0x980 fs/fs-writeback.c:2079
 wb_do_writeback fs/fs-writeback.c:2226 [inline]
 wb_workfn+0x350/0xda0 fs/fs-writeback.c:2266
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x2ff8/0x3020 fs/ext4/inode.c:2760
Code: 85 86 ff 84 db 75 31 e8 a6 82 86 ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 18 4c 8b 6c 24 38 e9 a2 f7 ff ff e8 88 82 86 ff <0f> 0b e8 81 82 86 ff e8 28 df 16 ff eb 93 e8 75 82 86 ff e8 1c df
RSP: 0018:ffffc900000a7120 EFLAGS: 00010293
RAX: ffffffff81e99b78 RBX: 000000c410000000 RCX: ffff88810029e540
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900000a7490 R08: dffffc0000000000 R09: ffffed10249d689f
R10: ffffed10249d689f R11: 1ffff110249d689e R12: dffffc0000000000
R13: ffff888124eb4608 R14: 0000008000000000 R15: ffff888124eb44f0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6948d7d4d CR3: 0000000112456000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400