------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2761!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 394 Comm: kworker/u4:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: writeback wb_workfn (flush-7:5)
RIP: 0010:ext4_writepages+0x30c2/0x30e0 fs/ext4/inode.c:2760
Code: de 84 ff 84 db 75 31 e8 9c db 84 ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 10 4c 8b 6c 24 40 e9 08 d3 ff ff e8 7e db 84 ff <0f> 0b e8 77 db 84 ff e8 5e e9 13 ff eb 93 e8 6b db 84 ff e8 52 e9
RSP: 0018:ffffc9000eeb7100 EFLAGS: 00010293
RAX: ffffffff81ec9382 RBX: 000000c41000c000 RCX: ffff888117c7e540
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000eeb7470 R08: ffff88813c60060f R09: 1ffff110278c00c1
R10: dffffc0000000000 R11: ffffed10278c00c2 R12: dffffc0000000000
R13: ffff888131f88000 R14: 0000008000000000 R15: 1ffff92001dd6e4c
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c278594 CR3: 0000000128c2c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3a4/0x5f0 mm/page-writeback.c:2494
 __writeback_single_inode+0xc6/0xad0 fs/fs-writeback.c:1622
 writeback_sb_inodes+0xa10/0x15d0 fs/fs-writeback.c:1913
 wb_writeback+0x40b/0x9d0 fs/fs-writeback.c:2089
 wb_do_writeback fs/fs-writeback.c:2236 [inline]
 wb_workfn+0x378/0xeb0 fs/fs-writeback.c:2276
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11e0 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+0x30c2/0x30e0 fs/ext4/inode.c:2760
Code: de 84 ff 84 db 75 31 e8 9c db 84 ff 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 10 4c 8b 6c 24 40 e9 08 d3 ff ff e8 7e db 84 ff <0f> 0b e8 77 db 84 ff e8 5e e9 13 ff eb 93 e8 6b db 84 ff e8 52 e9
RSP: 0018:ffffc9000eeb7100 EFLAGS: 00010293
RAX: ffffffff81ec9382 RBX: 000000c41000c000 RCX: ffff888117c7e540
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000eeb7470 R08: ffff88813c60060f R09: 1ffff110278c00c1
R10: dffffc0000000000 R11: ffffed10278c00c2 R12: dffffc0000000000
R13: ffff888131f88000 R14: 0000008000000000 R15: 1ffff92001dd6e4c
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d577bc33e8 CR3: 00000001315d2000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400