------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2736!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13792 Comm: syz.5.2092 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:ext4_writepages+0x2d37/0x2d40 fs/ext4/inode.c:2735
Code: c1 03 38 c1 0f 8c b9 fd ff ff 4c 89 e7 e8 d1 fc b1 ff e9 ac fd ff ff e8 57 de 6c ff 0f 0b e8 50 de 6c ff 0f 0b e8 49 de 6c ff <0f> 0b 0f 1f 80 00 00 00 00 41 57 41 56 53 48 89 fb 49 bf 00 00 00
RSP: 0018:ffffc90003497420 EFLAGS: 00010283
RAX: ffffffff820c1457 RBX: 0000008410000000 RCX: 0000000000080000
RDX: ffffc90017002000 RSI: 0000000000000ec3 RDI: 0000000000000ec4
RBP: ffffc90003497770 R08: ffff888024da0057 R09: 1ffff110049b400a
R10: dffffc0000000000 R11: ffffed10049b400b R12: dffffc0000000000
R13: 0000000000000001 R14: 0000008000000000 R15: 1ffff92000692eac
FS:  00007fe89ff6e6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe6a8860d58 CR3: 000000005fda1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x493/0x700 mm/page-writeback.c:2386
 filemap_fdatawrite_wbc+0x1eb/0x240 mm/filemap.c:400
 __filemap_fdatawrite_range mm/filemap.c:433 [inline]
 file_write_and_wait_range+0x14d/0x220 mm/filemap.c:810
 ext4_sync_file+0x20e/0xb10 fs/ext4/fsync.c:151
 generic_write_sync include/linux/fs.h:2990 [inline]
 ext4_buffered_write_iter+0x323/0x3a0 fs/ext4/file.c:275
 ext4_file_write_iter+0x73f/0x1720 fs/ext4/file.c:-1
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x748/0xd70 fs/read_write.c:594
 ksys_write+0x153/0x260 fs/read_write.c:647
 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: 0033:0x7fe8a1d15e99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe89ff6e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe8a1f9dfa0 RCX: 00007fe8a1d15e99
RDX: 0000000000000020 RSI: 0000200000000600 RDI: 0000000000000005
RBP: 00007fe8a1dabeaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe8a1f9e038 R14: 00007fe8a1f9dfa0 R15: 00007ffd0bc95498
 </TASK>
Modules linked in:
---[ end trace 629370b99d739f57 ]---
RIP: 0010:ext4_writepages+0x2d37/0x2d40 fs/ext4/inode.c:2735
Code: c1 03 38 c1 0f 8c b9 fd ff ff 4c 89 e7 e8 d1 fc b1 ff e9 ac fd ff ff e8 57 de 6c ff 0f 0b e8 50 de 6c ff 0f 0b e8 49 de 6c ff <0f> 0b 0f 1f 80 00 00 00 00 41 57 41 56 53 48 89 fb 49 bf 00 00 00
RSP: 0018:ffffc90003497420 EFLAGS: 00010283
RAX: ffffffff820c1457 RBX: 0000008410000000 RCX: 0000000000080000
RDX: ffffc90017002000 RSI: 0000000000000ec3 RDI: 0000000000000ec4
RBP: ffffc90003497770 R08: ffff888024da0057 R09: 1ffff110049b400a
R10: dffffc0000000000 R11: ffffed10049b400b R12: dffffc0000000000
R13: 0000000000000001 R14: 0000008000000000 R15: 1ffff92000692eac
FS:  00007fe89ff6e6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe6aacbc2f8 CR3: 000000005fda1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400