FAT-fs (loop0): Directory bread(block 72) failed
FAT-fs (loop0): Directory bread(block 73) failed
FAT-fs (loop0): unable to read boot sector to mark fs as dirty
------------[ cut here ]------------
WARNING: fs/buffer.c:1125 at __getblk_slow fs/buffer.c:1125 [inline], CPU#0: syz.0.206/6876
WARNING: fs/buffer.c:1125 at bdev_getblk+0x580/0x660 fs/buffer.c:1461, CPU#0: syz.0.206/6876
Modules linked in:
CPU: 0 UID: 0 PID: 6876 Comm: syz.0.206 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__getblk_slow fs/buffer.c:1125 [inline]
RIP: 0010:bdev_getblk+0x580/0x660 fs/buffer.c:1461
Code: 26 fb ff ff e8 61 ef 78 ff 48 c7 c7 a0 fc 99 8b 48 c7 c6 29 0b a0 8d 4c 89 fa 4c 89 e9 e8 48 e1 e0 fe eb bd e8 41 ef 78 ff 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 41 80 3c 07 00 74 08 48 89
RSP: 0018:ffffc9001b077438 EFLAGS: 00010283
RAX: ffffffff8246bcef RBX: ffff888022d03998 RCX: 0000000000080000
RDX: ffffc900046f2000 RSI: 000000000000053d RDI: 000000000000053e
RBP: 0000000000000800 R08: ffffc9001b0771a0 R09: 0000000000000020
R10: 0000000000000406 R11: ffffffff819e1240 R12: ffff888022d042e8
R13: ffff888022d03980 R14: 0000000000000800 R15: 1ffff110045a0733
FS:  00007fe246e6c6c0(0000) GS:ffff888125bd7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558294e808 CR3: 0000000066ccc000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __bread_gfp+0x89/0x3c0 fs/buffer.c:1515
 sb_bread include/linux/buffer_head.h:346 [inline]
 fat__get_entry fs/fat/dir.c:100 [inline]
 fat_get_entry+0x785/0xa90 fs/fat/dir.c:128
 fat_search_long+0x15b/0x1130 fs/fat/dir.c:490
 vfat_find fs/fat/namei_vfat.c:695 [inline]
 vfat_lookup+0x1a5/0x480 fs/fat/namei_vfat.c:709
 lookup_open fs/namei.c:3686 [inline]
 open_last_lookups fs/namei.c:3807 [inline]
 path_openat+0x10fe/0x3830 fs/namei.c:4043
 do_filp_open+0x1fa/0x410 fs/namei.c:4073
 do_sys_openat2+0x121/0x1c0 fs/open.c:1435
 do_sys_open fs/open.c:1450 [inline]
 __do_sys_creat fs/open.c:1528 [inline]
 __se_sys_creat fs/open.c:1522 [inline]
 __x64_sys_creat+0x8f/0xc0 fs/open.c:1522
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe245f8e929
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:00007fe246e6c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fe2461b5fa0 RCX: 00007fe245f8e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000300
RBP: 00007fe246010b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe2461b5fa0 R15: 00007ffd5e186968
 </TASK>