r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000000)='ns\x00')
r1 = syz_open_procfs(0x0, &(0x7f0000000000)='ns\x00')
renameat(r0, &(0x7f0000000040)='./mnt\x00', r1, &(0x7f0000000080)='./mnt\x00')