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kernel BUG at fs/ext4/inode.c:2747!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 630 Comm: kworker/u4:4 Tainted: G        W         5.15.185-syzkaller-00178-g5cf73bface18 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn (flush-7:4)
RIP: 0010:ext4_writepages+0x2f75/0x2f90 fs/ext4/inode.c:2746
Code: 00 00 00 e8 7d 8f 8f ff 84 db 75 2c e8 e4 8c 8f ff 49 bc 00 00 00 00 00 fc ff df 48 8b 5c 24 20 e9 d6 f7 ff ff e8 cb 8c 8f ff <0f> 0b e8 c4 8c 8f ff e8 ab 5b 27 ff eb a2 e8 b8 8c 8f ff e8 9f 5b
RSP: 0018:ffffc900010b7100 EFLAGS: 00010293
RAX: ffffffff81d91b15 RBX: 000000c410000000 RCX: ffff8881184362c0
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900010b7470 R08: dffffc0000000000 R09: ffffed1026a03528
R10: ffffed1026a03528 R11: 1ffff11026a03527 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000008000000000 R15: ffff88813501abd0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c282852 CR3: 000000011da80000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x48a/0x6c0 mm/page-writeback.c:2388
 __writeback_single_inode+0xd5/0x9c0 fs/fs-writeback.c:1647
 writeback_sb_inodes+0x9c0/0x1590 fs/fs-writeback.c:1930
 wb_writeback+0x3f1/0x980 fs/fs-writeback.c:2106
 wb_do_writeback fs/fs-writeback.c:2253 [inline]
 wb_workfn+0x38f/0xe20 fs/fs-writeback.c:2294
 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
 worker_thread+0xa59/0x1200 kernel/workqueue.c:2472
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace db42d2134c82e84e ]---
RIP: 0010:ext4_writepages+0x2f75/0x2f90 fs/ext4/inode.c:2746
Code: 00 00 00 e8 7d 8f 8f ff 84 db 75 2c e8 e4 8c 8f ff 49 bc 00 00 00 00 00 fc ff df 48 8b 5c 24 20 e9 d6 f7 ff ff e8 cb 8c 8f ff <0f> 0b e8 c4 8c 8f ff e8 ab 5b 27 ff eb a2 e8 b8 8c 8f ff e8 9f 5b
RSP: 0018:ffffc900010b7100 EFLAGS: 00010293
RAX: ffffffff81d91b15 RBX: 000000c410000000 RCX: ffff8881184362c0
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900010b7470 R08: dffffc0000000000 R09: ffffed1026a03528
R10: ffffed1026a03528 R11: 1ffff11026a03527 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000008000000000 R15: ffff88813501abd0
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2d134d CR3: 000000011daaa000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400