It's Linux, not GNU/Linux, no matter what Stallman insists. Linux is released under the GPL, but it is not, itself, part of the GNU project.
3dldf, a2ps, acct, acm, adns, alive, anubis, apl, archimedes, aris, aspell, auctex, autoconf, autoconf-archive, autogen, automake, avl, ballandpaddle, barcode, bash, bayonne, bazaar, bc, bfd, binutils, bison, bool, bpel2owfn, c-graph, ccaudio, ccd2cue, ccide, ccrtp, ccscript, cflow, cgicc, chess, cim, classpath, classpathx, clisp, cobol, combine, commoncpp, complexity, config, consensus, coreutils, cpio, cppi, cssc, cursynth, dap, datamash, dc, ddd, ddrescue, dejagnu, denemo, dia, dico, diction, diffutils, dionysus, djgpp, dmd, dominion, dr-geo, easejs, ed, edma, electric, emacs, emacs-muse, emms, enscript, eprints, epsilon, fdisk, ferret, findutils, fisicalab, fontutils, freedink, freefont, freeipmi, freetalk, fribidi, gama, garpd, gawk, gcal, gcc, gcide, gcl, gcompris, gdb, gdbm, gengen, gengetopt, gettext, gforth, ggradebook, ghostscript, gift, gimp, gleem, glib, global, glpk, glue, gmediaserver, gmp, gnash, gnat, gnats, gnatsweb, gnome, gnowsys, gnu-c-manual, gnu-crypto, gnu-pw-mgr, gnuae, gnubatch, gnubg, gnubiff, gnubik, gnucap, gnucash, gnucobol, gnucomm, gnudos, gnue, gnufm, gnugo, gnuit, gnujdoc, gnujump, gnukart, gnulib, gnumach, gnumed, gnumeric, gnump3d, gnun, gnunet, gnupg, gnupod, gnuprologjava, gnuradio, gnurobots, gnuschool, gnushogi, gnusound, gnuspeech, gnuspool, gnustandards, gnustep, gnutls, gnutrition, gnuzilla, goptical, gorm, gpaint, gperf, gprolog, grabcomics, greg, grep, gretl, groff, grub, gsasl, gsegrafix, gsl, gsrc, gss, gtick, gtk+, gtypist, guile, guile-dbi, guile-gnome, guile-ncurses, guile-opengl, guile-rpc, guile-sdl, guix, gurgle, gv, gvpe, gxmessage, gzip, halifax, health, hello, help2man, hp2xx, httptunnel, hurd, hyperbole, icecat, idutils, ignuit, indent, inetutils, intlfonts, jacal, java-getopt, jel, jwhois, kawa, kopi, leg, less, libc, libcdio, libdbh, liberty-eiffel, libextractor, libffcall, libgcrypt, libiconv, libidn, libjit, libmatheval, libmicrohttpd, libredwg, librejs, libsigsegv, libtasn1, libtool, libunistring, libxmi, lightning, lilypond, lims, linux-libre, liquidwar6, lispintro, lrzsz, lsh, m4, macchanger, mailman, mailutils, make, marst, maverik, mc, mcron, mcsim, mdk, mediagoblin, melting, metaexchange, metahtml, mifluz, mig, miscfiles, mit-scheme, moe, motti, mpc, mpfr, mpria, mtools, nana, nano, ncurses, nettle, network, ocrad, octave, oleo, orgadoc, osip, panorama, parallel, parted, pascal, patch, paxutils, pcb, pdf, pem, pexec, pgccfd, phantom_home, pies, pipo, plotutils, polyxmass, powerguru, proxyknife, pspp, psychosynth, pth, pyconfigure, pythonwebkit, qexo, quickthreads, r, radius, rcs, readline, recutils, reftex, remotecontrol, rottlog, rpge, rush, sather, scm, screen, sed, serveez, sharutils, shishi, shmm, shtool, sipwitch, slib, smalltalk, social, solfege, spacechart, speex, spell, sqltutor, src-highlite, stalkerfs, stow, stump, superopt, swbis, sysutils, talkfilters, tar, termcap, termutils, teseq, teximpatient, texinfo, texmacs, thales, time, tramp, trans-coord, trueprint, unifont, units, unrtf, userv, uucp, vc-dwim, vcdimager, vera, vmgen, wb, wdiff, websocket4j, webstump, wget, which, womb, xaos, xboard, xhippo, xlogmaster, xmlat, xnee, xorriso, and zile are all GNU. Linux is not.
The objection to calling it GNU/Linux should not be taken as a refusal to acknowledge the important role that GNU software has played in Linux's development and success, but that role does not spontaneously give Stallman permission to rebrand Linux, as if it were always part of his own project. If Stallman had really wanted any products to get publicly rebranded as GNU simply because they utilized GNU products so extensively, that's something that should have been clearly written into GPL v1. Such an explicit claim, however, probably would have resulted in GNU never becoming particularly popular in the first place.