------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2624!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 966 Comm: kworker/u8:5 Not tainted 6.15.0-rc2-syzkaller-00042-g1a1d569a75f3 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:5)
RIP: 0010:ext4_do_writepages+0x3e44/0x3e50 fs/ext4/inode.c:2623
Code: f0 8e 4c 89 f2 e8 2c be bc 02 e9 83 fb ff ff e8 22 36 3f ff 90 0f 0b e8 1a 36 3f ff 90 0f 0b e8 e2 a1 ac 09 e8 0d 36 3f ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000377ec00 EFLAGS: 00010293
RAX: ffffffff82841f23 RBX: 0000004000000000 RCX: ffff888026995a00
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc9000377f010 R08: ffffffff8283e653 R09: 1ffff1100f15e8b5
R10: dffffc0000000000 R11: ffffed100f15e8b6 R12: 0000000000000001
R13: ffffc9000377f520 R14: 0000006210000000 R15: ffffc9000377f080
FS:  0000000000000000(0000) GS:ffff888124f93000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555802e05c8 CR3: 0000000034ef4000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_writepages+0x26f/0x450 fs/ext4/inode.c:2829
 do_writepages+0x366/0x890 mm/page-writeback.c:2656
 __writeback_single_inode+0x14f/0x10d0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x822/0x1360 fs/fs-writeback.c:1976
 wb_writeback+0x415/0xb90 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x412/0x10b0 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xac5/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd50 kernel/workqueue.c:3400
 kthread+0x7b9/0x940 kernel/kthread.c:464
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x3e44/0x3e50 fs/ext4/inode.c:2623
Code: f0 8e 4c 89 f2 e8 2c be bc 02 e9 83 fb ff ff e8 22 36 3f ff 90 0f 0b e8 1a 36 3f ff 90 0f 0b e8 e2 a1 ac 09 e8 0d 36 3f ff 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000377ec00 EFLAGS: 00010293
RAX: ffffffff82841f23 RBX: 0000004000000000 RCX: ffff888026995a00
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc9000377f010 R08: ffffffff8283e653 R09: 1ffff1100f15e8b5
R10: dffffc0000000000 R11: ffffed100f15e8b6 R12: 0000000000000001
R13: ffffc9000377f520 R14: 0000006210000000 R15: ffffc9000377f080
FS:  0000000000000000(0000) GS:ffff888125093000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0caffc6870 CR3: 0000000027d4a000 CR4: 0000000000350ef0