loop0: detected capacity change from 0 to 4
VFS: Found a V7 FS (block size = 512) on device loop0
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WARNING: CPU: 0 PID: 8375 at fs/inode.c:362 inc_nlink+0x144/0x160 fs/inode.c:362
Modules linked in:
CPU: 0 PID: 8375 Comm: syz-executor996 Not tainted 5.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:inc_nlink+0x144/0x160 fs/inode.c:362
Code: ff 4c 89 e7 e8 9d 1b ee ff e9 42 ff ff ff 4c 89 e7 e8 20 1b ee ff e9 fc fe ff ff 4c 89 e7 e8 13 1b ee ff eb d4 e8 cc 70 aa ff <0f> 0b e9 6e ff ff ff e8 10 1b ee ff e9 44 ff ff ff e8 06 1b ee ff
RSP: 0018:ffffc9000163fe08 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88802f370038 RCX: 0000000000000000
RDX: ffff888018f10000 RSI: ffffffff81c98084 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81c97ff0 R11: 0000000000000000 R12: ffff88802f370080
R13: ffff88802db37be8 R14: ffffffff89952400 R15: 0000000000000000
FS:  0000000000b6c300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e0ca743820 CR3: 0000000029c9f000 CR4: 0000000000350ee0
Call Trace:
 inode_inc_link_count include/linux/fs.h:2297 [inline]
 sysv_mkdir+0x21/0x150 fs/sysv/namei.c:119
 vfs_mkdir+0x1ca/0x360 fs/namei.c:3817
 do_mkdirat+0x284/0x310 fs/namei.c:3842
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x443c29
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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcd88ce268 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 0000000000443c29
RDX: 00000000004021f3 RSI: 0000000000000023 RDI: 0000000020000080
RBP: 00000000004034c0 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffcd88ce130 R11: 0000000000000246 R12: 0000000000403550
R13: 0000000000000000 R14: 00000000004b1018 R15: 00000000004004a0