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Bug#858405: xmlto: intermittent Segmentation fault when building manpages for libreswan on mips64el

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Hi,

On 22/03/17 01:29, Daniel Kahn Gillmor wrote:
> Package: xmlto
> Version: 0.0.28-1
> Severity: normal
> 
> https://buildd.debian.org/status/fetch.php?pkg=libreswan&arch=mips64el&ver=3.20-6&stamp=1490132010&raw=0
> 
> shows xmlto having a segfault during the build of libreswan's manpages.
> 
> make[5]: Leaving directory '/«PKGBUILDDIR»/OBJ.linux.mips64/programs/proc'
> sed -e "s:@IPSECVERSION@:3.20:g" -e "/@linux_START@/,/@linux_END@/d" -e "s:@EXAMPLECONFDIR@:/usr/share/doc/libreswan:g" -e "s:@FINALBINDIR@:/usr/lib/ipsec:g" -e "s:@FINALCONFDDIR@:/etc/ipsec.d:g" -e "s:@FINALCONFDIR@:/etc:g" -e "s:@FINALCONFFILE@:/etc/ipsec.conf:g" -e "s:@FINALDOCDIR@:/usr/share/doc/libreswan:g" -e "s:@FINALEXAMPLECONFDIR@:/usr/share/doc/libreswan:g" -e "s:@FINALLIBEXECDIR@:/usr/lib/ipsec:g" -e "s:@FINALRCDIR@:/etc/init.d:g" -e "s:@FINALSBINDIR@:/usr/sbin:g" -e "s:@FINALSYSCONFDIR@:/etc:g" -e "s:@FINALVARDIR@:/var:g" -e "s:@IPSEC_CONF@:/etc/ipsec.conf:g" -e "s:@IPSEC_CONFDDIR@:/etc/ipsec.d:g" -e "s:@IPSEC_NSSDIR@:/var/lib/ipsec/nss:g" -e "s:@IPSEC_DIR@:/usr/lib/ipsec:g" -e "s:@IPSEC_EXECDIR@:/usr/lib/ipsec:g" -e "s:@IPSEC_VARDIR@:/var:g" -e "s:@IPSEC_SBINDIR@:/usr/sbin:g" -e "s:@IPSEC_SECRETS_FILE@:/etc/ipsec.secrets:g" -e "s:@MODPROBEBIN@:modprobe:g" -e "s:@MODPROBEARGS@:--quiet --use-blacklist:g" -e "s:@USE_DEFAULT_CONNS@::g" -e "s:@SD_TYPE@:notify:g" -e "s:@SD_RESTART_TYPE@:"always":g" -e "s:@SD_PLUTO_OPTIONS@:"--leak-detective":g" -e "s:@SD_WATCHDOGSEC@:200:g"  < ipsec_version.5.xml > ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp.tmp
> mv ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp.tmp ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp
> : ignoring seemingly bogus xmlto exit status
> xmlto man ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp -o ../../OBJ.linux.mips64/programs/proc || true
> /usr/bin/xmlto: line 613:  5007 Segmentation fault      "/usr/bin/xsltproc" --nonet --xinclude --param passivetex.extensions '1' -o "/tmp/xmlto.vUw7Aq/ipsec_version.5.proc" "/tmp/xmlto-xsl.XOSOth" "/«PKGBUILDDIR»/programs/proc/../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp"
> test -z ""  -a -r ../../OBJ.linux.mips64/programs/proc/ipsec_version.5
> ../../mk/manpages.mk:79: recipe for target '../../OBJ.linux.mips64/programs/proc/ipsec_version.5.man' failed
> make[4]: *** [../../OBJ.linux.mips64/programs/proc/ipsec_version.5.man] Error 1
> make[4]: Leaving directory '/«PKGBUILDDIR»/programs/proc'
> 
> The build of the previous version, 3.20-5, which is very similar code, did not have the segfault:
> 
> https://buildd.debian.org/status/fetch.php?pkg=libreswan&arch=mips64el&ver=3.20-5&stamp=1490115466&raw=0
> 
> make[5]: Leaving directory '/«PKGBUILDDIR»/OBJ.linux.mips64/programs/proc'
> sed -e "s:@IPSECVERSION@:3.20:g" -e "/@linux_START@/,/@linux_END@/d" -e "s:@EXAMPLECONFDIR@:/usr/share/doc/libreswan:g" -e "s:@FINALBINDIR@:/usr/lib/ipsec:g" -e "s:@FINALCONFDDIR@:/etc/ipsec.d:g" -e "s:@FINALCONFDIR@:/etc:g" -e "s:@FINALCONFFILE@:/etc/ipsec.conf:g" -e "s:@FINALDOCDIR@:/usr/share/doc/libreswan:g" -e "s:@FINALEXAMPLECONFDIR@:/usr/share/doc/libreswan:g" -e "s:@FINALLIBEXECDIR@:/usr/lib/ipsec:g" -e "s:@FINALRCDIR@:/etc/init.d:g" -e "s:@FINALSBINDIR@:/usr/sbin:g" -e "s:@FINALSYSCONFDIR@:/etc:g" -e "s:@FINALVARDIR@:/var:g" -e "s:@IPSEC_CONF@:/etc/ipsec.conf:g" -e "s:@IPSEC_CONFDDIR@:/etc/ipsec.d:g" -e "s:@IPSEC_NSSDIR@:/var/lib/ipsec/nss:g" -e "s:@IPSEC_DIR@:/usr/lib/ipsec:g" -e "s:@IPSEC_EXECDIR@:/usr/lib/ipsec:g" -e "s:@IPSEC_VARDIR@:/var:g" -e "s:@IPSEC_SBINDIR@:/usr/sbin:g" -e "s:@IPSEC_SECRETS_FILE@:/etc/ipsec.secrets:g" -e "s:@MODPROBEBIN@:modprobe:g" -e "s:@MODPROBEARGS@:--quiet --use-blacklist:g" -e "s:@USE_DEFAULT_CONNS@::g" -e "s:@SD_TYPE@:notify:g" -e "s:@SD_RESTART_TYPE@:"always":g" -e "s:@SD_PLUTO_OPTIONS@:"--leak-detective":g" -e "s:@SD_WATCHDOGSEC@:200:g"  < ipsec_version.5.xml > ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp.tmp
> mv ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp.tmp ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp
> : ignoring seemingly bogus xmlto exit status
> xmlto man ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.tmp -o ../../OBJ.linux.mips64/programs/proc || true
> Note: Writing ipsec_version.5
> test -z ""  -a -r ../../OBJ.linux.mips64/programs/proc/ipsec_version.5
> touch ../../OBJ.linux.mips64/programs/proc/ipsec_version.5.man
> 
> So xmlto seems to fail intermittently on mips64el, even though it
> behaves reliably on all the other debian architectures.
> 
> Sorry that i haven't been able to debug it further.
> 
> Perhaps someone who knows mips64el can debug it better than i can.
> 
> For debian revisions of 3.20, failures happened on:
> 
>   mipsel-manda-02
>   eberlin
>         
> Also for revisions of 3.20, successes happened on:
> 
>   mipsel-sil-01
>   mipsel-manda-03
>   mipsel-manda-01

This is a known issue and it only affects Loongson buildds.
Interestingly mipsel-manda-01 is Loongson and didn't fail there so there
may be a random element involved here. I don't think anyone's tracked
down the underlying issue though.

For the moment, I'll rebuild libreswan again and hope a good buildd is
picked.

James

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Bug#858405: xmlto: intermittent Segmentation fault when building manpages for libreswan on mips64el Daniel Kahn Gillmor <dkg@fifthhorseman.net> - 2017-03-22 02:40 +0100
  Bug#858405: xmlto: intermittent Segmentation fault when building manpages for libreswan on mips64el James Cowgill <jcowgill@debian.org> - 2017-03-22 11:30 +0100
    Bug#858405: xmlto: intermittent Segmentation fault when building manpages for libreswan on mips64el Daniel Kahn Gillmor <dkg@fifthhorseman.net> - 2017-03-22 22:30 +0100
      Bug#750593: Bug#858405: xmlto: intermittent Segmentation fault when building manpages for libreswan on mips64el James Cowgill <jcowgill@debian.org> - 2017-03-23 18:10 +0100
        Bug#750593: Stable update request: kernel changes to fix PIE with large stack Ben Hutchings <ben@decadent.org.uk> - 2017-03-23 22:40 +0100
          Bug#858405: Stable update request: kernel changes to fix PIE with large stack Ben Hutchings <ben@decadent.org.uk> - 2017-03-30 00:40 +0200
        Bug#750593: Bug#858405: xmlto: intermittent Segmentation fault when building manpages for libreswan on mips64el YunQiang Su <wzssyqa@gmail.com> - 2017-03-24 10:40 +0100

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