loop1: rw=2049, sector=42, nr_sectors = 1 limit=2
buffer_io_error: 56 callbacks suppressed
Buffer I/O error on dev loop1, logical block 42, lost sync page write
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7257 at fs/buffer.c:1081 mark_buffer_dirty+0x383/0x7a0 fs/buffer.c:1081
Modules linked in:
CPU: 0 PID: 7257 Comm: syz.1.660 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:mark_buffer_dirty+0x383/0x7a0 fs/buffer.c:1081
Code: 13 d1 e2 ff 49 8b 3f be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 bc bc fc ff e8 a7 9f 92 ff e9 43 ff ff ff e8 9d 9f 92 ff <0f> 0b e9 ba fc ff ff e8 91 9f 92 ff 0f 0b e9 00 fd ff ff e8 85 9f
RSP: 0018:ffffc90003d07808 EFLAGS: 00010283
RAX: ffffffff81ee4033 RBX: ffff888055eaa0e8 RCX: 0000000000080000
RDX: ffffc9000f252000 RSI: 0000000000020fc1 RDI: 0000000000020fc2
RBP: ffff888017895401 R08: dffffc0000000000 R09: ffffed100abd541e
R10: ffffed100abd541e R11: 1ffff1100abd541d R12: dffffc0000000000
R13: ffff888055f86218 R14: ffffea00014eb918 R15: 0000000000000000
FS:  00007fd0031df6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc6fcd8d40 CR3: 000000004a6fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 mark_buffer_dirty_inode+0x82/0x2e0 fs/buffer.c:575
 fat_remove_entries+0x17d/0x3f0 fs/fat/dir.c:1050
 vfat_rename fs/fat/namei_vfat.c:1032 [inline]
 vfat_rename2+0x1785/0x1c20 fs/fat/namei_vfat.c:1174
 vfs_rename+0xbbf/0x10d0 fs/namei.c:4882
 do_renameat2+0x89d/0xc70 fs/namei.c:5035
 __do_sys_renameat2 fs/namei.c:5068 [inline]
 __se_sys_renameat2 fs/namei.c:5065 [inline]
 __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5065
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd00238f749
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:00007fd0031df038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007fd0025e6090 RCX: 00007fd00238f749
RDX: ffffffffffffff9c RSI: 0000200000000780 RDI: ffffffffffffff9c
RBP: 00007fd002413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd0025e6128 R14: 00007fd0025e6090 R15: 00007ffd5ab5b268
 </TASK>