------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2808!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 9648 Comm: syz.5.1143 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:ext4_do_writepages+0x2bc6/0x3cf0 fs/ext4/inode.c:2808
Code: ad 10 ff ff ff 48 c1 ea 03 80 3c 02 00 0f 84 23 e9 ff ff 48 8b bd 28 ff ff ff e8 65 92 a8 ff e9 12 e9 ff ff e8 2b 28 43 ff 90 <0f> 0b e8 23 28 43 ff 90 0f 0b 90 e9 0d e6 ff ff e8 15 28 43 ff 90
RSP: 0018:ffffc90003337490 EFLAGS: 00010287
RAX: 0000000000000903 RBX: ffff888045728050 RCX: ffffc900147b9000
RDX: 0000000000080000 RSI: ffffffff82787465 RDI: 0000000000000007
RBP: ffffc90003337660 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900033376b8
R13: 0000000000000001 R14: ffff888045728298 R15: 0000000000400140
FS:  00007f7a89eee6c0(0000) GS:ffff8881247b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c350372 CR3: 0000000032be0000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_writepages+0x37a/0x7d0 fs/ext4/inode.c:3025
 do_writepages+0x27a/0x600 mm/page-writeback.c:2634
 filemap_fdatawrite_wbc mm/filemap.c:386 [inline]
 filemap_fdatawrite_wbc+0x104/0x160 mm/filemap.c:376
 __filemap_fdatawrite_range+0xb9/0x100 mm/filemap.c:419
 file_write_and_wait_range+0xca/0x140 mm/filemap.c:794
 generic_buffers_fsync_noflush+0x76/0x310 fs/buffer.c:609
 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline]
 ext4_sync_file+0x896/0xf10 fs/ext4/fsync.c:147
 vfs_fsync_range+0x139/0x220 fs/sync.c:187
 generic_write_sync include/linux/fs.h:3043 [inline]
 ext4_buffered_write_iter+0x2e0/0x440 fs/ext4/file.c:305
 ext4_file_write_iter+0xa4c/0x1d10 fs/ext4/file.c:723
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x7d3/0x11d0 fs/read_write.c:686
 ksys_pwrite64 fs/read_write.c:793 [inline]
 __do_sys_pwrite64 fs/read_write.c:801 [inline]
 __se_sys_pwrite64 fs/read_write.c:798 [inline]
 __x64_sys_pwrite64+0x1eb/0x250 fs/read_write.c:798
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7a88f8eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7a89eee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f7a891d5fa0 RCX: 00007f7a88f8eba9
RDX: 0000000000000001 RSI: 0000200000000880 RDI: 0000000000000004
RBP: 00007f7a89011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7a891d6038 R14: 00007f7a891d5fa0 R15: 00007ffd6d452438
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x2bc6/0x3cf0 fs/ext4/inode.c:2808
Code: ad 10 ff ff ff 48 c1 ea 03 80 3c 02 00 0f 84 23 e9 ff ff 48 8b bd 28 ff ff ff e8 65 92 a8 ff e9 12 e9 ff ff e8 2b 28 43 ff 90 <0f> 0b e8 23 28 43 ff 90 0f 0b 90 e9 0d e6 ff ff e8 15 28 43 ff 90
RSP: 0018:ffffc90003337490 EFLAGS: 00010287
RAX: 0000000000000903 RBX: ffff888045728050 RCX: ffffc900147b9000
RDX: 0000000000080000 RSI: ffffffff82787465 RDI: 0000000000000007
RBP: ffffc90003337660 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900033376b8
R13: 0000000000000001 R14: ffff888045728298 R15: 0000000000400140
FS:  00007f7a89eee6c0(0000) GS:ffff8881247b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec2ebff88 CR3: 0000000032be0000 CR4: 0000000000350ef0