syzbot

loop0: detected capacity change from 0 to 128
VFS: Found a Xenix FS (block size = 1024) on device loop0
attempt to access beyond end of device
loop0: rw=0, want=6491538, limit=128
Buffer I/O error on dev loop0, logical block 3245768, async page read
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WARNING: CPU: 1 PID: 4162 at fs/inode.c:364 inc_nlink+0x120/0x130
Modules linked in:
CPU: 1 PID: 4162 Comm: syz-executor140 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:inc_nlink+0x120/0x130 fs/inode.c:364
Code: ed ff e9 37 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 49 ff ff ff 4c 89 ef e8 4a 9e ed ff e9 3c ff ff ff e8 10 c6 a3 ff <0f> 0b eb 80 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 53 48
RSP: 0018:ffffc90002ef7d60 EFLAGS: 00010293
RAX: ffffffff81dcad90 RBX: 1ffff1100de28810 RCX: ffff8880219d5940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81dcad0a R09: ffffed1002e39a57
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88806f144080 R14: ffff88806f144038 R15: 0000000000000000
FS:  0000555568622380(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc4a0c95000 CR3: 0000000026634000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_inc_link_count include/linux/fs.h:2499 [inline]
 sysv_mkdir+0x1d/0x120 fs/sysv/namei.c:119
 vfs_mkdir+0x3b6/0x590 fs/namei.c:4065
 do_mkdirat+0x260/0x520 fs/namei.c:4090
 __do_sys_mkdir fs/namei.c:4110 [inline]
 __se_sys_mkdir fs/namei.c:4108 [inline]
 __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4108
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc4a90c4a59
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdbb13c248 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc4a90c4a59
RDX: 00007fc4a90c3cb0 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007fc4a91415f0 R08: 0000000000009e89 R09: 00005555686234c0
R10: 00007ffdbb13c110 R11: 0000000000000246 R12: 00007ffdbb13c270
R13: 00007ffdbb13c498 R14: 431bde82d7b634db R15: 00007fc4a910d03b
 </TASK>