loop5: detected capacity change from 0 to 128
VFS: Found a Xenix FS (block size = 1024) on device loop5
syz.5.1325: attempt to access beyond end of device
loop5: rw=0, sector=6491536, nr_sectors = 2 limit=128
Buffer I/O error on dev loop5, logical block 3245768, async page read
------------[ cut here ]------------
WARNING: CPU: 0 PID: 12507 at fs/inode.c:462 inc_nlink+0x127/0x150 fs/inode.c:462
Modules linked in:
CPU: 0 UID: 0 PID: 12507 Comm: syz.5.1325 Not tainted 6.12.0-rc6-next-20241107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:inc_nlink+0x127/0x150 fs/inode.c:462
Code: ff e9 35 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 47 ff ff ff 4c 89 ef e8 14 f8 e5 ff e9 3a ff ff ff e8 da 81 7b ff 90 <0f> 0b 90 e9 7b ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 49
RSP: 0018:ffffc900030d7d30 EFLAGS: 00010283
RAX: ffffffff8223e546 RBX: 1ffff1100bccf0b8 RCX: 0000000000040000
RDX: ffffc90004561000 RSI: 0000000000006b1b RDI: 0000000000006b1c
RBP: 0000000000000000 R08: ffffffff8223e4c0 R09: 1ffff110035907a0
R10: dffffc0000000000 R11: ffffffff82c742f0 R12: dffffc0000000000
R13: ffff88805e6785c0 R14: ffff88805e678578 R15: 0000000000000000
FS:  00007f0b27b546c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faf39a00020 CR3: 000000001cb0c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_inc_link_count include/linux/fs.h:2514 [inline]
 sysv_mkdir+0x21/0x130 fs/sysv/namei.c:119
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4311
 do_mkdirat+0x264/0x3a0 fs/namei.c:4334
 __do_sys_mkdirat fs/namei.c:4349 [inline]
 __se_sys_mkdirat fs/namei.c:4347 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0b26d7e719
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:00007f0b27b54038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f0b26f35f80 RCX: 00007f0b26d7e719
RDX: 0000000000000000 RSI: 0000000020000100 RDI: ffffffffffffff9c
RBP: 00007f0b26df139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0b26f35f80 R15: 00007ffc50c78958
 </TASK>