From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Rothwell Subject: linux-next: build failure after merge of the ecryptfs tree Date: Tue, 14 May 2019 10:15:18 +1000 Message-ID: <20190514100910.6996d2f5@canb.auug.org.au> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/GsNMvU2qEo9mMflr5OjEJ0k"; protocol="application/pgp-signature" Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Masahiro Yamada Cc: Tyler Hicks , Linux Next Mailing List , Linux Kernel Mailing List List-Id: linux-next.vger.kernel.org --Sig_/GsNMvU2qEo9mMflr5OjEJ0k Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, I don't know why this suddenly appeared after mergeing the ecryptfs tree since nothin has changed in that tree for some time (and nothing in that tree seems relevant). After merging the ecryptfs tree, today's linux-next build (x86_64 allmodconfig) failed like this: scripts/Makefile.modpost:112: target '.tmp_versions/asix.mod' doesn't match= the target pattern scripts/Makefile.modpost:113: warning: overriding recipe for target '.tmp_v= ersions/asix.mod' scripts/Makefile.modpost:100: warning: ignoring old recipe for target '.tmp= _versions/asix.mod' scripts/Makefile.modpost:127: target '.tmp_versions/asix.mod' doesn't match= the target pattern scripts/Makefile.modpost:128: warning: overriding recipe for target '.tmp_v= ersions/asix.mod' scripts/Makefile.modpost:113: warning: ignoring old recipe for target '.tmp= _versions/asix.mod' make[2]: Circular .tmp_versions/asix.mod <- __modpost dependency dropped. Binary file .tmp_versions/asix.mod matches: No such file or directory make[2]: *** [scripts/Makefile.modpost:91: __modpost] Error 1 make[1]: *** [Makefile:1290: modules] Error 2 The only clue I can see is that asix.o gets built in two separate directories (drivers/net/{phy,usb}). I have the following files in the object directory: ./.tmp_versions/asix.mod ./drivers/net/usb/asix.ko ./drivers/net/usb/asix.mod.o ./drivers/net/usb/asix.o ./drivers/net/usb/asix_common.o ./drivers/net/usb/asix_devices.o ./drivers/net/usb/.asix.ko.cmd ./drivers/net/usb/.asix.mod.o.cmd ./drivers/net/usb/.asix.o.cmd ./drivers/net/usb/asix.mod.c ./drivers/net/usb/.asix_common.o.cmd ./drivers/net/usb/.asix_devices.o.cmd ./drivers/net/phy/asix.ko ./drivers/net/phy/asix.o ./drivers/net/phy/.asix.ko.cmd ./drivers/net/phy/.asix.mod.o.cmd ./drivers/net/phy/asix.mod.o ./drivers/net/phy/asix.mod.c ./drivers/net/phy/.asix.o.cmd ./.tmp_versions/asix.mod Looks like this: ------------------------------------------ drivers/net/phy/asix.ko drivers/net/phy/asix.o ------------------------------------------ What you can't see above are the 256 NUL bytes at the end of the file (followed by a NL). This is from a -j 80 build. Surely there is a race condition here if the file in .tmp_versions is only named for the base name of the module and we have 2 modules with the same base name. I removed that file and redid the build and it succeeded. Mind you, I have no itdea why this file was begin rebuilt, the merge only touched these files: fs/ecryptfs/crypto.c fs/ecryptfs/keystore.c Puzzled ... :-( --=20 Cheers, Stephen Rothwell --Sig_/GsNMvU2qEo9mMflr5OjEJ0k Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAlzaCJYACgkQAVBC80lX 0GwlwQf9Gj9wz73uyo5re6z+nQHohC1vGzloekz15OIqF5RmdKpSqIF99rFJYE2k 1O6LUj+zVLOPN2h6NBFMX7XHRw4I5h7IXPp7VVTiVcptnsalQ12Ehjv9N+tZaNII PMX6oZdNDAG9GtwShSKuUGHLMiFVvhf1TNyDfmCSRT72KytN6/eYchSDkqGNOBUi rSu2+4aytF6UE8WHcf7EUmG0kfoN3bUCsKvrQe3KyHyo+b9fcbI9Fsisv/rUuI6m Q8NRE25pzrL49YFLiZG506gyUBsorBHdT1wp+Qo1A1MtHwI2439Zuv5el7QLSVll jsaBXyrZvpJ/3dC6UFwJza/3vx1fag== =Cwco -----END PGP SIGNATURE----- --Sig_/GsNMvU2qEo9mMflr5OjEJ0k--