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kernel BUG at fs/ext4/inode.c:2623!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 3489 Comm: kworker/u8:8 Not tainted 6.15.0-rc2-syzkaller-00400-g3088d26962e8 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_do_writepages+0x2638/0x3490 fs/ext4/inode.c:2623
Code: a5 18 ff ff ff 48 c1 ea 03 80 3c 02 00 0f 84 33 ed ff ff 48 8b bd 20 ff ff ff e8 83 bb a9 ff e9 22 ed ff ff e8 f9 37 45 ff 90 <0f> 0b e8 f1 37 45 ff 90 0f 0b 90 e9 04 eb ff ff e8 e3 37 45 ff 90
RSP: 0018:ffffc9000bf7f200 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888079a88050 RCX: ffffffff8275f14d
RDX: ffff8880320f0000 RSI: ffffffff827606e7 RDI: 0000000000000007
RBP: ffffc9000bf7f3d0 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888079a88510 R14: 0000000000000080 R15: ffffc9000bf7f428
FS:  0000000000000000(0000) GS:ffff8881249b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4b4957fab8 CR3: 000000003397c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_writepages+0x37a/0x7d0 fs/ext4/inode.c:2829
 do_writepages+0x1b5/0x820 mm/page-writeback.c:2656
 __writeback_single_inode+0x160/0xfb0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x601/0xf90 fs/fs-writeback.c:1976
 wb_writeback+0x419/0xb70 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x14d/0xbe0 fs/fs-writeback.c:2343
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x48/0x80 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+0x2638/0x3490 fs/ext4/inode.c:2623
Code: a5 18 ff ff ff 48 c1 ea 03 80 3c 02 00 0f 84 33 ed ff ff 48 8b bd 20 ff ff ff e8 83 bb a9 ff e9 22 ed ff ff e8 f9 37 45 ff 90 <0f> 0b e8 f1 37 45 ff 90 0f 0b 90 e9 04 eb ff ff e8 e3 37 45 ff 90
RSP: 0018:ffffc9000bf7f200 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888079a88050 RCX: ffffffff8275f14d
RDX: ffff8880320f0000 RSI: ffffffff827606e7 RDI: 0000000000000007
RBP: ffffc9000bf7f3d0 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888079a88510 R14: 0000000000000080 R15: ffffc9000bf7f428
FS:  0000000000000000(0000) GS:ffff888124ab9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c31e34b CR3: 000000007a5c4000 CR4: 0000000000350ef0