------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2747!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 414 Comm: syz-executor.2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:ext4_writepages+0x2f75/0x2f90 fs/ext4/inode.c:2746
Code: 00 00 00 e8 ad 7a 8f ff 84 db 75 2c e8 14 78 8f ff 49 bc 00 00 00 00 00 fc ff df 48 8b 5c 24 20 e9 d6 f7 ff ff e8 fb 77 8f ff <0f> 0b e8 f4 77 8f ff e8 0b 30 27 ff eb a2 e8 e8 77 8f ff e8 ff 2f
RSP: 0018:ffffc9000122f340 EFLAGS: 00010293

RAX: ffffffff81d946b5 RBX: 0000008410000000 RCX: ffff8881115e4f00
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000122f6b0 R08: dffffc0000000000 R09: ffffed102414eb00
R10: ffffed102414eb00 R11: 1ffff1102414eaff R12: dffffc0000000000
R13: 0000000000000001 R14: 0000008000000000 R15: ffff888120a75a90
FS:  00007fb56b2266c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffda9350de8 CR3: 00000001280a2000 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
 filemap_fdatawrite_wbc+0x1f4/0x250 mm/filemap.c:409
 __filemap_fdatawrite_range mm/filemap.c:442 [inline]
 file_write_and_wait_range+0x129/0x1e0 mm/filemap.c:819
 ext4_sync_file+0x1a9/0xa10 fs/ext4/fsync.c:151
 vfs_fsync_range+0x190/0x1a0 fs/sync.c:188
 generic_write_sync include/linux/fs.h:3038 [inline]
 ext4_buffered_write_iter+0x5d0/0x670 fs/ext4/file.c:277
 ext4_file_write_iter+0x18c/0x14c0 fs/ext4/file.c:664
 call_write_iter include/linux/fs.h:2212 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x802/0xf70 fs/read_write.c:594
 ksys_write+0x140/0x240 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:656
 x64_sys_call+0x8ef/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb5739c48d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb56b2260c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb573ae4050 RCX: 00007fb5739c48d9
RDX: 0000000000000024 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007fb573a20ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fb573ae4050 R15: 00007ffc00030ee8
 </TASK>
Modules linked in:
---[ end trace 172d9948cef6faaf ]---
RIP: 0010:ext4_writepages+0x2f75/0x2f90 fs/ext4/inode.c:2746
Code: 00 00 00 e8 ad 7a 8f ff 84 db 75 2c e8 14 78 8f ff 49 bc 00 00 00 00 00 fc ff df 48 8b 5c 24 20 e9 d6 f7 ff ff e8 fb 77 8f ff <0f> 0b e8 f4 77 8f ff e8 0b 30 27 ff eb a2 e8 e8 77 8f ff e8 ff 2f
RSP: 0018:ffffc9000122f340 EFLAGS: 00010293
RAX: ffffffff81d946b5 RBX: 0000008410000000 RCX: ffff8881115e4f00
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000122f6b0 R08: dffffc0000000000 R09: ffffed102414eb00
R10: ffffed102414eb00 R11: 1ffff1102414eaff R12: dffffc0000000000
R13: 0000000000000001 R14: 0000008000000000 R15: ffff888120a75a90
FS:  00007fb56b2266c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb5e1889000 CR3: 00000001280a2000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400