------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2808!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5941 Comm: kworker/u8:8 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_do_writepages+0x4607/0x4610 fs/ext4/inode.c:2807
Code: c6 c0 77 9e 8b e8 c9 f8 93 ff 90 0f 0b e8 51 78 4c ff 4c 89 f7 48 c7 c6 a0 7b 9e 8b e8 b2 f8 93 ff 90 0f 0b e8 3a 78 4c ff 90 <0f> 0b 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90004ab6cc0 EFLAGS: 00010293
RAX: ffffffff827338d6 RBX: 0000006210000000 RCX: ffff88802fcb8000
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc90004ab70f0 R08: ffff888057ad9377 R09: 1ffff1100af5b26e
R10: dffffc0000000000 R11: ffffed100af5b26f R12: 0000000000000001
R13: ffffc90004ab7140 R14: 0000004000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125be3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe847db8e9c CR3: 0000000053864000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ext4_writepages+0x205/0x350 fs/ext4/inode.c:3024
 do_writepages+0x32b/0x550 mm/page-writeback.c:2634
 __writeback_single_inode+0x145/0xff0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x6c7/0x1010 fs/fs-writeback.c:1976
 wb_writeback+0x43b/0xaf0 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x409/0xef0 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 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+0x4607/0x4610 fs/ext4/inode.c:2807
Code: c6 c0 77 9e 8b e8 c9 f8 93 ff 90 0f 0b e8 51 78 4c ff 4c 89 f7 48 c7 c6 a0 7b 9e 8b e8 b2 f8 93 ff 90 0f 0b e8 3a 78 4c ff 90 <0f> 0b 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90004ab6cc0 EFLAGS: 00010293
RAX: ffffffff827338d6 RBX: 0000006210000000 RCX: ffff88802fcb8000
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc90004ab70f0 R08: ffff888057ad9377 R09: 1ffff1100af5b26e
R10: dffffc0000000000 R11: ffffed100af5b26f R12: 0000000000000001
R13: ffffc90004ab7140 R14: 0000004000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125ce3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8065802d8 CR3: 000000007aea8000 CR4: 00000000003526f0
DR0: 0000000000000001 DR1: 0000000000000002 DR2: 0000000000000004
DR3: 0000000080000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400