GNU bug report logs - #23885
SEGFAULT: In procedure char-set-contains?: Wrong type argument in position 2 (expecting character): builder for libarchive-3.1.2

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Eus <eus <at> member.fsf.org>
To: bug-guix <at> gnu.org
Subject: SEGFAULT: In procedure char-set-contains?: Wrong type argument in
 position 2 (expecting character): builder for libarchive-3.1.2
Date: Sun, 03 Jul 2016 08:42:09 +0700

Hi everyone!

I downloaded the Guix for USB disk, booted from it, performed the instructions shown at Alt+F2 but replacing "guix system init ..." with:
$ guix pull
$ guix system --fallback --keep-failed init ...

Then, I ended up with a segfault as shown below:

grafting '/gnu/store/nvshb8zk84hjggag42nyj0a8bnyqmv3c-atk-2.20.0-doc' -> '/gnu/store/aindlj4dlxagzgvsnx127k1n0zi1jn4d-atk-2.20.0-doc'...
grafting '/gnu/store/qizy1vd86sxvn7dgwafi1c8vqhnq8nrr-atk-2.20.0' -> '/gnu/store/vafqayi2gbridw03b7x1jpxpn78mansw-atk-2.20.0'...
grafting '/gnu/store/nsd5dhp22qlimlpyj7x9svg1yl6spr3i-cups-minimal-2.1.0' -> '/gnu/store/cwy27kkz7a88bwpc8cwig1ya5127bb4c-cups-minimal-2.1.0'...
grafting '/gnu/store/777020nhx8yhgpdk9zgnpl2pnajgsdbr-cyrus-sasl-2.1.26' -> '/gnu/store/9q2x2z9bjri2dn4sciinyw2mil2g7n21-cyrus-sasl-2.1.26'...
grafting '/gnu/store/d60md8bmqfp9nh60yiwman5cvvvp19wi-dbus-1.10.8' -> '/gnu/store/r1n27559si0gc6gpf13qmam3by14jy23-dbus-1.10.8'...
grafting '/gnu/store/glbd0mzai2d83m6jab381flxrsv0h156-desktop-file-utils-0.22' -> '/gnu/store/g6yx2mr1acvws3dbhfqycsxgn4394hxq-desktop-file-utils-0.22'...
grafting '/gnu/store/kzl4d4qy66kmkblzr7pjavf9z6bd41j8-at-spi2-core-2.20.1-doc' -> '/gnu/store/sifnqqbf25lqr1pkaln6lbmpwlv0q9fq-at-spi2-core-2.20.1-doc'...
grafting '/gnu/store/rd5sjr6cafx41dla4g9z1s83zp1msy80-at-spi2-core-2.20.1' -> '/gnu/store/jlhyha061klw0nrrgc2xmwjmw9azcdjx-at-spi2-core-2.20.1'...
grafting '/gnu/store/r2bcyrm7z8pjafhihrhxydc4vkigdkrg-avahi-0.6.31' -> '/gnu/store/r7v5qbqdh94pzqs0ygpsdf3c0vmkxwdh-avahi-0.6.31'...
grafting '/gnu/store/83195wlwq4rbz4rzq96vg5c7sr90fxw5-at-spi2-atk-2.20.1' -> '/gnu/store/h3hz9gphykban1jzjgba8zair2qqy5j4-at-spi2-atk-2.20.1'...
grafting '/gnu/store/ibz8abb6aq2k8bp0krnvm53c1vmjgc01-dbus-glib-0.104' -> '/gnu/store/052wpm204hdfczgq7w9jm8gymsi8l5w6-dbus-glib-0.104'...
grafting '/gnu/store/280z99ky123fsjznpjb3vik2kyyax4g6-enchant-1.6.0' -> '/gnu/store/fqas39l0sr0i9zk4q65a6vvzk7k45mxy-enchant-1.6.0'...
`/gnu/store/r1sw6yvmnskiag8zlr7y4y6d3wjy3j4x-elogind-219.14/share/dbus-1/system-services/org.freedesktop.login1.service' -> `/gnu/store/p7c0fwqjf0hzmwdn6yhwgrdwz38c3g6n-elogind-wrapper/share/dbus-1/system-services/org.freedesktop.login1.service'
grafting '/gnu/store/fsqfr53ayw18xgdqidy3samm70zaq7m3-exempi-2.3.0' -> '/gnu/store/ji9103i1rg5pgf1qk1hwsaqzdcgqc7ir-exempi-2.3.0'...
grafting '/gnu/store/p7jvbh4g2hqfmrkqwhljd9fq984jbaci-fontconfig-2.11.94' -> '/gnu/store/4wnwvy5y1sjr2xg9nf7bjrm6xqc3p8in-fontconfig-2.11.94'...
grafting '/gnu/store/9877p5iac7084z57m48brngf0fni0n1x-gdk-pixbuf-2.34.0' -> '/gnu/store/ll196l2vjksqfms8gvq47g8ndb39lcl9-gdk-pixbuf-2.34.0'...
grafting '/gnu/store/qkvlazvwp3jdzl32n26cfrjw5sxv0ci5-cairo-1.14.6' -> '/gnu/store/bbv65l0vhp9vwgxqfr4szz08qbid4h86-cairo-1.14.6'...
grafting '/gnu/store/7hkzdkd6svcmc76hxqzlj5s7im01791r-cairo-1.14.6' -> '/gnu/store/ad5m5c81sjlwwm6zhhgvvk4947mrqpby-cairo-1.14.6'...
grafting '/gnu/store/ix381yxzkh1w0yi48azvhj92gw5hcmsz-gd-2.2.1' -> '/gnu/store/symjb2x3cmasvmm376zikxg85n35jaw4-gd-2.2.1'...
grafting '/gnu/store/44gb306m4rgv6j3w6zz3hr17vxkj95hm-cairomm-1.12.0' -> '/gnu/store/6jgbwb3g97bv330fqw3fsrrn36jhyprr-cairomm-1.12.0'...
grafting '/gnu/store/x9h2ss1fzr5fnvdn00bv67mn94j30idx-glibmm-2.48.1' -> '/gnu/store/njnw1dkd3qfs37k4r624c3f2zigwf8ql-glibmm-2.48.1'...
grafting '/gnu/store/qnxx9qnbgvsji4f9vng9l88rpy4zg3df-gmime-2.6.20' -> '/gnu/store/qfxakyk465n9j04v8d9bgi9af11y43v5-gmime-2.6.20'...
grafting '/gnu/store/31ixv2wa348zsykwaavq693z0l3faal9-atkmm-2.24.2' -> '/gnu/store/icpq6gd3q0k7mgr6lv2pprrff425qf9a-atkmm-2.24.2'...
grafting '/gnu/store/al8wigkjl4yzxhksainvcbl4rg59jbap-gom-0.3.2' -> '/gnu/store/5vi4h11yvy2j4r3rh19cnmyasgjaqalx-gom-0.3.2'...
grafting '/gnu/store/i6v4anmk12xmm3nsibk85mnv3f8nb5sq-gstreamer-1.8.0-doc' -> '/gnu/store/p64m3sf0gvyyg5hh2m4bkxsgjhhq9582-gstreamer-1.8.0-doc'...
grafting '/gnu/store/kasl32kj3423rnwd21gznjz73jfapvw0-gstreamer-1.8.0' -> '/gnu/store/pzi8863v1hhyl8zjqmyfaj1969zir42x-gstreamer-1.8.0'...
grafting '/gnu/store/1sv1hhg4vf7fn50wd83h2hx92hb5kcmp-guix-0.10.0-0.e901' -> '/gnu/store/vw26xsn24jmrijn939fjjk50m5i4hfq3-guix-0.10.0-0.e901'...
grafting '/gnu/store/cg4n0ib42apa0k6jpncpvdwd95fa7mp9-json-glib-1.2.0' -> '/gnu/store/gli388n5ylivc7ja0f0s70j0ira7mqym-json-glib-1.2.0'...
grafting '/gnu/store/7sba9q9dpkhcb2zmqcm8a00d1xrkccvz-libarchive-3.1.2' -> '/gnu/store/ciga1934crxdimj5s1gsnvh74rk24hnd-libarchive-3.1.2'...
grafting '/gnu/store/p07xa257vli65gx6vs3d0l3qxwqg13rk-libarchive-3.1.2' -> '/gnu/store/ji2jgkbpl4nabwn70ax6y7kg99r7xzk7-libarchive-3.1.2'...
[ 7584.270501] guile[27326]: segfault at 0 ip 00007ffff7b41c47 sp 00007ffff4cb1930 error 4 in libguile-2.0.so.22.7.2[7ffff7a4d000+153000]
ERROR: In procedure char-set-contains?: Wrong type argument in position 2 (expecting character): builder for `/gnu/store/2fjf4zqh05lzg8sa7l865xvg4faqc5z4-libarchive-3.1.2.drv' failed due to signal 11 (Segmentation fault)
cannot build derivation `/gnu/store/6y3lqn4cfxsh4g87hrbmvvalip66n9hl-grilo-0.3.0.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/kinnv75vg6mabiky3ha6px9ypyw1rg0q-gvfs-1.28.1.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/11y7qn07iwix7imp5ykvvxnml078mw8w-totem-3.20.1.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/15fhv0jx2mksk73pvmxd1ljiaf3168sb-profile.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/5xlkh7ivv2v78f5dd36ynjbyrqxm623s-system.drv': 1 dependencies couldn't be built
guix system: error: build failed: build of `/gnu/store/5xlkh7ivv2v78f5dd36ynjbyrqxm623s-system.drv' failed

Any suggestion as to how to debug this?

Thank you.

--
Best regards,
Eus (FSF member #4445)

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Message #8 received at 23885 <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: Eus <eus <at> member.fsf.org>
Cc: 23885 <at> debbugs.gnu.org
Subject: Re: bug#23885: SEGFAULT: In procedure char-set-contains?: Wrong type
 argument in position 2 (expecting character): builder for
 libarchive-3.1.2
Date: Sat, 2 Jul 2016 21:58:18 -0400

On Sun, Jul 03, 2016 at 08:42:09AM +0700, Eus wrote:
[...]

> grafting '/gnu/store/7sba9q9dpkhcb2zmqcm8a00d1xrkccvz-libarchive-3.1.2' -> '/gnu/store/ciga1934crxdimj5s1gsnvh74rk24hnd-libarchive-3.1.2'...
> grafting '/gnu/store/p07xa257vli65gx6vs3d0l3qxwqg13rk-libarchive-3.1.2' -> '/gnu/store/ji2jgkbpl4nabwn70ax6y7kg99r7xzk7-libarchive-3.1.2'...

Can anyone say if it is expected that there are two different
libarchives? Seems strange to me, and it immediately precedes the fault.

A quick `grep` in (gnu packages) didn't reveal any private libarchive
packages besides the graft replacement.

> [ 7584.270501] guile[27326]: segfault at 0 ip 00007ffff7b41c47 sp 00007ffff4cb1930 error 4 in libguile-2.0.so.22.7.2[7ffff7a4d000+153000]
> ERROR: In procedure char-set-contains?: Wrong type argument in position 2 (expecting character): builder for `/gnu/store/2fjf4zqh05lzg8sa7l865xvg4faqc5z4-libarchive-3.1.2.drv' failed due to signal 11 (Segmentation fault)

Message #11 received at 23885 <at> debbugs.gnu.org (full text, mbox):

From: ludo <at> gnu.org (Ludovic Courtès)
To: Leo Famulari <leo <at> famulari.name>
Cc: Eus <eus <at> member.fsf.org>, 23885 <at> debbugs.gnu.org
Subject: Re: bug#23885: SEGFAULT: In procedure char-set-contains?: Wrong type
 argument in position 2 (expecting character): builder for libarchive-3.1.2
Date: Mon, 04 Jul 2016 15:51:35 +0200

Leo Famulari <leo <at> famulari.name> skribis:

> On Sun, Jul 03, 2016 at 08:42:09AM +0700, Eus wrote:
> [...]
>
>> grafting '/gnu/store/7sba9q9dpkhcb2zmqcm8a00d1xrkccvz-libarchive-3.1.2' -> '/gnu/store/ciga1934crxdimj5s1gsnvh74rk24hnd-libarchive-3.1.2'...
>> grafting '/gnu/store/p07xa257vli65gx6vs3d0l3qxwqg13rk-libarchive-3.1.2' -> '/gnu/store/ji2jgkbpl4nabwn70ax6y7kg99r7xzk7-libarchive-3.1.2'...
>
> Can anyone say if it is expected that there are two different
> libarchives? Seems strange to me, and it immediately precedes the fault.

I think that can happen due to different graft orderings.  It’s hard to
tell without knowing the exact package set, though.

>> [ 7584.270501] guile[27326]: segfault at 0 ip 00007ffff7b41c47 sp 00007ffff4cb1930 error 4 in libguile-2.0.so.22.7.2[7ffff7a4d000+153000]
>> ERROR: In procedure char-set-contains?: Wrong type argument in position 2 (expecting character): builder for `/gnu/store/2fjf4zqh05lzg8sa7l865xvg4faqc5z4-libarchive-3.1.2.drv' failed due to signal 11 (Segmentation fault)

This is scary.  Eus, is it reproducible?  That is, does it happen again
if you run:

  guix build --rounds=4 \
     /gnu/store/2fjf4zqh05lzg8sa7l865xvg4faqc5z4-libarchive-3.1.2.drv

?

Thanks,
Ludo’.

Message #14 received at 23885 <at> debbugs.gnu.org (full text, mbox):

From: Eus <eus <at> member.fsf.org>
To: "ludo <at> gnu.org" <ludo <at> gnu.org>,
	Leo Famulari <leo <at> famulari.name>
Cc: "23885 <at> debbugs.gnu.org" <23885 <at> debbugs.gnu.org>
Subject: Re: bug#23885: SEGFAULT: In procedure char-set-contains?: Wrong type
 argument in position 2 (expecting character): builder for libarchive-3.1.2
Date: Tue, 05 Jul 2016 08:21:05 +0700

04.07.2016, 20:53, "Ludovic Courtès" <ludo <at> gnu.org>:
> Leo Famulari <leo <at> famulari.name> skribis:
>
>>  On Sun, Jul 03, 2016 at 08:42:09AM +0700, Eus wrote:
>>  [...]
>>
>>>  grafting '/gnu/store/7sba9q9dpkhcb2zmqcm8a00d1xrkccvz-libarchive-3.1.2' -> '/gnu/store/ciga1934crxdimj5s1gsnvh74rk24hnd-libarchive-3.1.2'...
>>>  grafting '/gnu/store/p07xa257vli65gx6vs3d0l3qxwqg13rk-libarchive-3.1.2' -> '/gnu/store/ji2jgkbpl4nabwn70ax6y7kg99r7xzk7-libarchive-3.1.2'...

[...]

>>>  [ 7584.270501] guile[27326]: segfault at 0 ip 00007ffff7b41c47 sp 00007ffff4cb1930 error 4 in libguile-2.0.so.22.7.2[7ffff7a4d000+153000]
>>>  ERROR: In procedure char-set-contains?: Wrong type argument in position 2 (expecting character): builder for `/gnu/store/2fjf4zqh05lzg8sa7l865xvg4faqc5z4-libarchive-3.1.2.drv' failed due to signal 11 (Segmentation fault)
>
> This is scary. Eus, is it reproducible? That is, does it happen again
> if you run:
>
>   guix build --rounds=4 \
>      /gnu/store/2fjf4zqh05lzg8sa7l865xvg4faqc5z4-libarchive-3.1.2.drv
>
> ?

Since I have already wiped the partition, I did everything from the beginning like what I have done when I encountered the segfault. This time, however, the problem did not appear.

I see that the grafting lines that appeared before the segfault message differ from the grafting lines in the successful run. In the failing one, there are 29 grafting lines. In the successful one, there are 17 grafting lines. Moreover, the grafting of /gnu/store/ciga1934crxdimj5s1gsnvh74rk24hnd-libarchive-3.1.2 and /gnu/store/ji2jgkbpl4nabwn70ax6y7kg99r7xzk7-libarchive-3.1.2 are reversed in the successful run although they both are still grafted one after another as before.

Other than that, in the failed run, I have the following line after segfault:
cannot build derivation `/gnu/store/6y3lqn4cfxsh4g87hrbmvvalip66n9hl-grilo-0.3.0.drv': 1 dependencies couldn't be built

In the successful run, however, ls -d /gnu/store/*-grilo-0.3.0.drv gives:
/gnu/store/cg3qlswny4242wc8f28maljd9yvwd5dd-grilo-0.3.0.drv
/gnu/store/qiwfbwn7a7cvf2lgqjlmkclwdrgl3fzz-grilo-0.3.0.drv

Any guess as to what actually causes the segfault?

I'd rather have you pursue this matter further, but if it is not worth the effort, I am okay if this report is dismissed.

> Thanks,
> Ludo’.

Thanks,
Eus

Message #17 received at 23885 <at> debbugs.gnu.org (full text, mbox):

From: ludo <at> gnu.org (Ludovic Courtès)
To: Eus <eus <at> member.fsf.org>
Cc: "23885 <at> debbugs.gnu.org" <23885 <at> debbugs.gnu.org>,
 Leo Famulari <leo <at> famulari.name>
Subject: Re: bug#23885: SEGFAULT: In procedure char-set-contains?: Wrong type
 argument in position 2 (expecting character): builder for libarchive-3.1.2
Date: Tue, 05 Jul 2016 09:55:28 +0200

Eus <eus <at> member.fsf.org> skribis:

> 04.07.2016, 20:53, "Ludovic Courtès" <ludo <at> gnu.org>:
>> Leo Famulari <leo <at> famulari.name> skribis:
>>
>>>  On Sun, Jul 03, 2016 at 08:42:09AM +0700, Eus wrote:
>>>  [...]
>>>
>>>>  grafting '/gnu/store/7sba9q9dpkhcb2zmqcm8a00d1xrkccvz-libarchive-3.1.2' -> '/gnu/store/ciga1934crxdimj5s1gsnvh74rk24hnd-libarchive-3.1.2'...
>>>>  grafting '/gnu/store/p07xa257vli65gx6vs3d0l3qxwqg13rk-libarchive-3.1.2' -> '/gnu/store/ji2jgkbpl4nabwn70ax6y7kg99r7xzk7-libarchive-3.1.2'...
>
> [...]
>
>>>>  [ 7584.270501] guile[27326]: segfault at 0 ip 00007ffff7b41c47 sp 00007ffff4cb1930 error 4 in libguile-2.0.so.22.7.2[7ffff7a4d000+153000]
>>>>  ERROR: In procedure char-set-contains?: Wrong type argument in position 2 (expecting character): builder for `/gnu/store/2fjf4zqh05lzg8sa7l865xvg4faqc5z4-libarchive-3.1.2.drv' failed due to signal 11 (Segmentation fault)
>>
>> This is scary. Eus, is it reproducible? That is, does it happen again
>> if you run:
>>
>>   guix build --rounds=4 \
>>      /gnu/store/2fjf4zqh05lzg8sa7l865xvg4faqc5z4-libarchive-3.1.2.drv
>>
>> ?
>
> Since I have already wiped the partition, I did everything from the beginning like what I have done when I encountered the segfault. This time, however, the problem did not appear.
>
> I see that the grafting lines that appeared before the segfault message differ from the grafting lines in the successful run. In the failing one, there are 29 grafting lines. In the successful one, there are 17 grafting lines. Moreover, the grafting of /gnu/store/ciga1934crxdimj5s1gsnvh74rk24hnd-libarchive-3.1.2 and /gnu/store/ji2jgkbpl4nabwn70ax6y7kg99r7xzk7-libarchive-3.1.2 are reversed in the successful run although they both are still grafted one after another as before.
>
> Other than that, in the failed run, I have the following line after segfault:
> cannot build derivation `/gnu/store/6y3lqn4cfxsh4g87hrbmvvalip66n9hl-grilo-0.3.0.drv': 1 dependencies couldn't be built
>
> In the successful run, however, ls -d /gnu/store/*-grilo-0.3.0.drv gives:
> /gnu/store/cg3qlswny4242wc8f28maljd9yvwd5dd-grilo-0.3.0.drv
> /gnu/store/qiwfbwn7a7cvf2lgqjlmkclwdrgl3fzz-grilo-0.3.0.drv
>
> Any guess as to what actually causes the segfault?
>
> I'd rather have you pursue this matter further, but if it is not worth the effort, I am okay if this report is dismissed.

OK, this is weird.  The segfault would be a Guile bug, something that
should never happen.  I’ve never seen it before though, so we’d need
more data to investigate.

I’m closing this bug and we can reopen it when we have more info.

Thanks,
Ludo’.

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