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kernel BUG at fs/ext4/inode.c:2761!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2437 Comm: kworker/u4:30 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:ext4_writepages+0x2ff8/0x3020 fs/ext4/inode.c:2760
Code: 72 86 ff 84 db 75 31 e8 a6 6f 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 6f 86 ff <0f> 0b e8 81 6f 86 ff e8 28 c0 16 ff eb 93 e8 75 6f 86 ff e8 1c c0
RSP: 0018:ffffc90000cf7120 EFLAGS: 00010293
RAX: ffffffff81e9ba78 RBX: 000000c41000c000 RCX: ffff88812de49440
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90000cf7490 R08: dffffc0000000000 R09: ffffed1022ca22e7
R10: ffffed1022ca22e7 R11: 1ffff11022ca22e6 R12: dffffc0000000000
R13: ffff888116511848 R14: 0000008000000000 R15: ffff888116511730
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe91b3e7dac CR3: 0000000131ec0000 CR4: 00000000003506a0
Call Trace:
 <TASK>
 do_writepages+0x3a9/0x5e0 mm/page-writeback.c:2494
 __writeback_single_inode+0xc6/0xad0 fs/fs-writeback.c:1622
 writeback_sb_inodes+0x9b8/0x1550 fs/fs-writeback.c:1913
 wb_writeback+0x3f1/0x980 fs/fs-writeback.c:2089
 wb_do_writeback fs/fs-writeback.c:2236 [inline]
 wb_workfn+0x350/0xda0 fs/fs-writeback.c:2276
 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: 72 86 ff 84 db 75 31 e8 a6 6f 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 6f 86 ff <0f> 0b e8 81 6f 86 ff e8 28 c0 16 ff eb 93 e8 75 6f 86 ff e8 1c c0
RSP: 0018:ffffc90000cf7120 EFLAGS: 00010293
RAX: ffffffff81e9ba78 RBX: 000000c41000c000 RCX: ffff88812de49440
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90000cf7490 R08: dffffc0000000000 R09: ffffed1022ca22e7
R10: ffffed1022ca22e7 R11: 1ffff11022ca22e6 R12: dffffc0000000000
R13: ffff888116511848 R14: 0000008000000000 R15: ffff888116511730
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5ced972a60 CR3: 000000014321a000 CR4: 00000000003506b0