From owner-freebsd-ports@freebsd.org Fri Dec 28 08:16:54 2018 Return-Path: Delivered-To: freebsd-ports@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 855E5143085D for ; Fri, 28 Dec 2018 08:16:54 +0000 (UTC) (envelope-from marklmi@yahoo.com) Received: from sonic305-19.consmr.mail.gq1.yahoo.com (sonic305-19.consmr.mail.gq1.yahoo.com [98.137.64.82]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C15987764E for ; Fri, 28 Dec 2018 08:16:52 +0000 (UTC) (envelope-from marklmi@yahoo.com) X-YMail-OSG: y6hfxTIVM1m.UxJCWvaYFp.vJKhuoLDTG_f_sirbOSO1O5EmN7wxLtXZg3PD7u5 IUMsJkJqN6D_bsApJEsaBJ6V0l_ODYd.RS2ZF9KtLSwHqVOQHhCtPNxrovKLhXBypoW8uO2tU1Ct Ge9XCCXnRHzbBs3UfhBOa1PfljZGeWT61nnu3Swe9lvuAyPR51kSxqrTcAwxafFM_aoLD.yQFTkM i1Q.7Cb.KDkgZZZAr30w4Rd2J226rzB3pkojIzxHA6SGT1Acqp90X2GiSA4ODBN7D8g2QQLAUK8t 1kMvbBdMegsL6ToHHxM6sYj9TuJ37xM9Ob2pbhzc5OftI516KbTgZy9CKt2w92Bh1nbPfVNfneZj akbN96c.KD5XLhpJaHaFr1K9_jri2dCxEc_mwUCngJ2HH29Ql1u2wWgcsV5VtyyJSswkYWcQVr6f LvANHL4.RrGX6E5r7_JRdsjeHBQhn79KNHuCu6HNxvdAcZMMoeFdVdU0PlsuhWRorgU7kso2M294 T6JzaKLfYosROjFpVxnd4mVpS8zGG48KaYin7M_PtT7zfmofpaqI7dHFIELoie9nrkij_j6yAuMn TsQdFS5ZUw16cHHtks3zek8ArfZlDQedPjqz1kHnJQofZVJVZxiZ6pUt_kc9zK_LTCIx6zPXLonD RUgp.zXw4hMN8.Gg1uDqaOCWudORkvu2nvwMl6cwzaANKKiTmgLwMnfgng69H8CDUxZbDfx1aui0 ojG1uxneuYppp.i9LRH9vFdUOJiOVnAfI_1C_wCCa6cYE8_pUKt4zLSc5n2xDFOW0eZNXz1l1BQQ 0qOKLd1rS7HcjQXyHUl_lQB2aBkjXGdMF_sbVD3HRx7aQQQARxBijmeidocneyY6lA1wwAb5KyPE GxsaVM5rivSiDPCTCO_ZwWdD3kcLUkuQUQS6g44ksfKqPKEoeVyDFOn4bKM6yMK5ZPGW1MPHdWdW U4G8AFmn4.WlBMFgmyMqsUceZ238hKSJJ.62oZK6fsKVjAA.5lrv1IJ5vlTh4c7Fj9NG18nEsAGK 9YchCBSoC4tS2WRUAbyq5P1LgIazbiV73WNWdHJOEsMAx0ue80hrTCNpt04.F1vGNVRZXyWT6IhZ MMA-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic305.consmr.mail.gq1.yahoo.com with HTTP; Fri, 28 Dec 2018 08:16:51 +0000 Received: from c-67-170-167-181.hsd1.or.comcast.net (EHLO [192.168.1.109]) ([67.170.167.181]) by smtp423.mail.gq1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID 8f402acdf959e803df861ac1ea528308; Fri, 28 Dec 2018 08:16:49 +0000 (UTC) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Subject: Re: A reliable port cross-build failure (hangup) in my context (amd64->armv7 cross build, with native-tool speedup involved) From: Mark Millard In-Reply-To: <5C3F09FE-EA50-452D-98EE-364B7BF3ECD0@yahoo.com> Date: Fri, 28 Dec 2018 00:16:48 -0800 Cc: freebsd-arm , FreeBSD Toolchain Content-Transfer-Encoding: quoted-printable Message-Id: <3946C94A-FCA6-49FE-ADDB-B042BBE50913@yahoo.com> References: <865A13C8-9749-486E-9F79-5EEDDECBE621@yahoo.com> <0154C3AC-D85B-4FCF-BA63-454BC26BC1A2@yahoo.com> <5C3F09FE-EA50-452D-98EE-364B7BF3ECD0@yahoo.com> To: freebsd-emulation@freebsd.org, FreeBSD Current , ports-list freebsd X-Mailer: Apple Mail (2.3445.102.3) X-Rspamd-Queue-Id: C15987764E X-Spamd-Bar: / X-Spamd-Result: default: False [0.01 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; MV_CASE(0.50)[]; FREEMAIL_FROM(0.00)[yahoo.com]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[yahoo.com:+]; MX_GOOD(-0.01)[cached: mta6.am0.yahoodns.net]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/21, country:US]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[yahoo.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.41)[-0.406,0]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; FROM_HAS_DN(0.00)[]; NEURAL_SPAM_SHORT(0.88)[0.875,0]; NEURAL_HAM_LONG(-0.84)[-0.837,0]; MIME_GOOD(-0.10)[text/plain]; IP_SCORE(0.89)[ip: (3.41), ipnet: 98.137.64.0/21(0.62), asn: 36647(0.49), country: US(-0.08)]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[82.64.137.98.list.dnswl.org : 127.0.5.0]; RWL_MAILSPIKE_POSSIBLE(0.00)[82.64.137.98.rep.mailspike.net : 127.0.0.17] X-BeenThere: freebsd-ports@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Porting software to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Dec 2018 08:16:54 -0000 [The historical notes are removed and replaced by partial trace information from example hang-ups, not that I've figured out what contributes yet.] I ran into the following while trying to get evidence about the hang-up for an amd64->armv7 cross-build of multimedia/gstreamer1-qt@qt5 . The following from trying to get evidence for the hang-up via a manual run of "make multimedia/gstreamer1-qt FLAVOR=3Dqt5=E2=80=9D in a poudriere bulk -i=E2=80=99s interactive mode for the context that has the hang-up in normal poudriere-devel runs. =46rom top after the hang-up (to identify some context): 14528 root 2 52 0 100M 24M 0 kqread 11 0:00 = 0.00% /usr/local/bin/qemu-arm-static /usr/local/bin/cmake -E = cmake_autogen /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/. 14527 root 2 52 0 88M 13M 0 select 22 0:00 = 0.00% /usr/local/bin/qemu-arm-static ninja -j1 -v all from ps -auxd as well (to identify more context): root 10114 0.0 0.0 10328 1756 1 I+J 13:47 0:00.01 | = `-- make FLAVOR=3Dqt5 root 14526 0.0 0.0 10204 1792 1 I+J 13:50 0:00.00 | = `-- /bin/sh -e -c (cd = /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build; if ! = /usr/bin/env QT_SELE root 14527 0.0 0.0 90304 13084 1 I+J 13:50 0:00.09 | = `-- /usr/local/bin/qemu-arm-static ninja -j1 -v all root 14528 0.0 0.0 102876 25060 1 IJ 13:50 0:00.12 | = `-- /usr/local/bin/qemu-arm-static = /usr/local/bin/cmake -E cmake_autogen /wrkdirs/usr/ports/multimedia/g I had made a qemu-user-static that enabled do_strace when it is used to run cmake or ninja. The only do_strace lines from qemu-arm-static running cmake or ninja mentioning process 14528 are included in the sequence: (Before the below was a long list of "14527 fstatat=E2=80=9D lines. I=E2=80=99ll note that "'Unknown syscall 545=E2=80=9D is from ppoll = use.) 82400 sigprocmask(1,-1610620016,-191968524,-186261416,0,24) =3D 0 82400 sigaction(2,-1610620040,-191968596,-186261584,210460,0) =3D 0 82400 sigaction(15,-1610620040,-191968572,-186261584,210460,0) =3D 0 82400 sigaction(1,-1610620040,-191968548,-186261584,210460,0) =3D 0 82400 gettimeofday(-1610619984,0,4,-186261584,-1610619440,-1610619528) =3D= 0 82400 gettimeofday(-1610619984,0,4,359949,1545969996,0) =3D 0 82400 gettimeofday(-1610620120,0,4,2,-184666112,-1610619520) =3D 0 82400 fstatat(-100,"elements/gstqtvideosink/CMakeFiles", 0x9fffe200, 0) = =3D 0 82400 fstatat(-100,"elements/gstqtvideosink/gstqt5videosink_autogen", = 0x9fffe200, 0) =3D 0 82400 pipe2(-1610620176,0,-1610620108,0,-1610620120,167084) =3D 0 82400 fcntl(5,1,-1610620108,-185863932,-192200556,-1610620228) =3D 0 82400 fcntl(5,2,1,-185863932,-192200556,-1610620228) =3D 0 82400 vfork(0,66450,-186876196,-1610620184,-1610620240,0) =3D 82401 82400 close(6) =3D 0 =3D 0 82400 Unknown syscall 545 82401 setpgid(0,0,-186876196,-1610620184,-1610620240,0) =3D 0 82401 sigprocmask(3,-191586912,0,-1610620184,-1610620240,0) =3D 0 82401 close(5) =3D 0 82401 open("/dev/null",0,0) =3D 5 82401 dup2(5,0,0,-1610620184,-1610620240,0) =3D 0 82401 close(5) =3D 0 82401 fcntl(0,2,0,-1610620184,-1610620240,0) =3D 0 82401 dup2(6,1,0,-1610620184,-1610620240,0) =3D 1 82401 fcntl(1,2,0,-1610620184,-1610620240,0) =3D 0 82401 dup2(6,2,0,-1610620184,-1610620240,0)82400 = sigpending(-1610620072,1,0,-191968524,0,0) =3D 0 The vfork then close(6) sequence for 82400 vs. the later use of 6 in dup2 in 82401 may be rather odd. But it looks like qemu-*-static uses do_freebsd_fork to implement do_freebsd_vfork, despite reporting vfork before calling do_freebsd_vfork. (Does the close(6) appear to indicate a race for native operation of ninja for the period when the address space is shared?) Ninja has Subprocess::Start code that has: #ifdef POSIX_SPAWN_USEVFORK flags |=3D POSIX_SPAWN_USEVFORK; #endif if (posix_spawnattr_setflags(&attr, flags) !=3D 0) Fatal("posix_spawnattr_setflags: %s", strerror(errno)); const char* spawned_args[] =3D { "/bin/sh", "-c", command.c_str(), = NULL }; if (posix_spawn(&pid_, "/bin/sh", &action, &attr, const_cast(spawned_args), environ) !=3D 0) Fatal("posix_spawn: %s", strerror(errno)); that is in use here. I think that this explains the vfork use. It turns out that putting the hung-up build in the background and then killing 82401 with the likes of kill -6 leads to more output that had apparently been buffered. It shows the use of the (amd64 native) /bin/sh that in turn leads to /usr/local/bin/cmake via qemu-arm-static. /bin/sh, being native, gets no do_strace output from qemu-arm-static. 82400 sigpending(-1610620072,1,0,-191968524,0,0) =3D 0 82400 read(5,0x9fffd368,4096) =3D 58 82400 Unknown syscall 545 82400 sigpending(-1610620072,1,0,-191968524,0,0) =3D 0 82400 read(5,0x9fffd368,4096) =3D 0 82400 close(5) =3D 0 82400 wait4(82401,-1610620004,0,0,-191968640,0) =3D 82401 82400 mmap(0,86016,3,201330690,-1,-1610620169) =3D 0xf4777000 82400 gettimeofday(-1610620224,0,4,-1610619944,31,16777216) =3D 0 82400 write(1,0xf4950000,283)[1/129] cd = /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build/elements/gstqt= videosink && /usr/local/bin/cmake -E cmake_autogen = /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build/elements/gstqt= videosink/CMakeFiles/gstqt5videosink_autogen.dir/AutogenInfo.cmake Debug =3D 283 82400 write(1,0xf4950000,137)FAILED: = elements/gstqtvideosink/CMakeFiles/gstqt5videosink_autogen = elements/gstqtvideosink/gstqt5videosink_autogen/mocs_compilation.cpp=20 =3D 137 82400 write(1,0xf4950000,275)cd = /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build/elements/gstqt= videosink && /usr/local/bin/cmake -E cmake_autogen = /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build/elements/gstqt= videosink/CMakeFiles/gstqt5videosink_autogen.dir/AutogenInfo.cmake Debug =3D 275 82400 write(1,0xf4950000,5) =3D 2 =3D 5 (Note that some 82400 writes are reporting 82401 information:) 82400 write(1,0xf4950000,49)82401 fcntl(2,2,0,-1610620184,-1610620240,0) = =3D 0 =3D 49 82400 write(1,0xf4950000,19)82401 close(6) =3D 0 =3D 19 82400 write(1,0xf4950000,401)82401 execve("/bin/sh",{"/bin/sh","-c","cd = /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build/elements/gstqt= videosink && /usr/local/bin/cmake -E cmake_autogen = /wrkdirs/usr/ports/multimedia/gstreamer1-qt/work-qt5/.build/elements/gstqt= videosink/CMakeFiles/gstqt5videosink_autogen.dir/AutogenInfo.cmake = Debug",NULL})82401 __sysctl({ 0 3 }, 2, 0x9fffda80, 0x9fffdf64, = 0xf5002097, 0x0000000c) =3D 0 =3D 401 (The /bin/sh activity is not logged: /bin/sh is native amd64 code here. = The below is from the later /usr/local/bin/cmake via qemu-arm-static. . . . (much omitted) . . . 82400 write(1,0xf4950000,60)82401 = mmap(0,28672,3,201330690,-1,-1610621989) =3D 0xf41a0000 =3D 60 82400 write(1,0xf4950000,74)82401 = clock_gettime(4,-1610621832,4,-199622492,-199622492,-199622656) =3D 0 =3D 74 82400 write(1,0xf4950000,62)82401 = kqueue(-199622656,0,53102,0,-199622656,-1610621444) =3D 3 =3D 62 82400 write(1,0xf4950000,81)82401 ioctl(3, 0x20006601 { IO GRP:0x66('f') = CMD:1 LEN:0 }, 0x0000cf6e, ...) =3D 0 =3D 81 . . . (some omitted) . . . (Then there is a fairly long sequence of access's and then a sequence of fstatat's just before:) 82400 write(1,0xf4950000,32)82401 write(9,0xf4e1a945,1) =3D 1 =3D 32 82400 write(1,0xf4950000,61)82401 = clock_gettime(4,-1610622624,4,100863,1,-199483392) =3D 0 =3D 61 82400 write(1,0xf4950000,106)82401 = kevent(3,-1610688200,2,-1610688200,1024,0)qemu: uncaught target signal 6 = (Abort trap) - core dumped =3D 106 82400 write(1,0xf4950000,41)ninja: build stopped: subcommand failed. =3D 41 So it was hung at the kevent until the kill -6 . Via another experiment ninja was at the time waiting in ppoll: Reading symbols from ninja...done. [New LWP 73023] Core was generated by `ninja'. Program terminated with signal SIGABRT, Aborted. #0 0xf4e5e0dc in _ppoll () from /lib/libc.so.7 (gdb) bt #0 0xf4e5e0dc in _ppoll () from /lib/libc.so.7 #1 0x00033bf0 in SubprocessSet::DoWork (this=3D) at = src/subprocess-posix.cc:237 Backtrace stopped: previous frame inner to this frame (corrupt stack?) =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)