Buffer I/O error on dev loop6, logical block 34, lost sync page write
syz.6.2000: attempt to access beyond end of device
loop6: rw=2049, sector=42, nr_sectors = 1 limit=1
Buffer I/O error on dev loop6, logical block 42, lost sync page write
------------[ cut here ]------------
WARNING: CPU: 0 PID: 12825 at fs/buffer.c:1188 mark_buffer_dirty+0x2bb/0x4c0 fs/buffer.c:1188
Modules linked in:
CPU: 0 PID: 12825 Comm: syz.6.2000 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:mark_buffer_dirty+0x2bb/0x4c0 fs/buffer.c:1188
Code: 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 9f 9a fc ff e8 1a bf 88 ff 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 0a 09 e8 ff e8 05 bf 88 ff <0f> 0b e9 84 fd ff ff e8 f9 be 88 ff 0f 0b e9 b0 fd ff ff e8 ed be
RSP: 0018:ffffc90005387810 EFLAGS: 00010287
RAX: ffffffff81fe5d5b RBX: ffff888055a06740 RCX: 0000000000080000
RDX: ffffc9000e131000 RSI: 000000000002d747 RDI: 000000000002d748
RBP: ffff88802007aa01 R08: ffff888055a06747 R09: 1ffff1100ab40ce8
R10: dffffc0000000000 R11: ffffed100ab40ce9 R12: dffffc0000000000
R13: ffff888074249ca8 R14: ffffea0001a79e58 R15: 0000000000000000
FS:  00007f745421e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000140 CR3: 000000002f668000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 mark_buffer_dirty_inode+0x86/0x2e0 fs/buffer.c:681
 fat_remove_entries+0x181/0x400 fs/fat/dir.c:1050
 vfat_rename fs/fat/namei_vfat.c:1037 [inline]
 vfat_rename2+0x180f/0x1c90 fs/fat/namei_vfat.c:1179
 vfs_rename+0xba2/0xed0 fs/namei.c:4880
 do_renameat2+0x8e9/0xce0 fs/namei.c:5033
 __do_sys_renameat2 fs/namei.c:5066 [inline]
 __se_sys_renameat2 fs/namei.c:5063 [inline]
 __x64_sys_renameat2+0xd2/0xe0 fs/namei.c:5063
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f745339c799
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:00007f745421e028 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f7453616090 RCX: 00007f745339c799
RDX: ffffffffffffff9c RSI: 0000200000000780 RDI: ffffffffffffff9c
RBP: 00007f7453432c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7453616128 R14: 00007f7453616090 R15: 00007ffde18ab128
 </TASK>