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Subject: bug#63368: Build coordiantor "Signals delivery fails constantly" crashes
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Since the recent core-updates merge, I've seen the build coordinator
using less memory, but it's also been crashing in a new way, up to 10
times a day.
In the log, you see something like:
2023-05-07 09:15:42 Signals delivery fails constantly at GC #71051
2023-05-07 09:15:42 Signals delivery fails constantly
I'm guessing the switch from libgc-8.0.4 to libgc-8.2.2 has something to
do with this.
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Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Christopher Baines <mail@HIDDEN> Subject: bug#63368: Acknowledgement (Build coordiantor "Signals delivery fails constantly" crashes) Message-ID: <handler.63368.B.168354329924592.ack <at> debbugs.gnu.org> References: <87mt2fytxh.fsf@HIDDEN> X-Gnu-PR-Message: ack 63368 X-Gnu-PR-Package: guix Reply-To: 63368 <at> debbugs.gnu.org Date: Mon, 08 May 2023 10:55:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-guix@HIDDEN If you wish to submit further information on this problem, please send it to 63368 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 63368: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D63368 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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Subject: bug#63368: Build coordiantor "Signals delivery fails constantly" crashes
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From: Christopher Baines <mail@HIDDEN>
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Christopher Baines <mail@HIDDEN> writes:
> Since the recent core-updates merge, I've seen the build coordinator
> using less memory, but it's also been crashing in a new way, up to 10
> times a day.
>
> In the log, you see something like:
>
> 2023-05-07 09:15:42 Signals delivery fails constantly at GC #71051
> 2023-05-07 09:15:42 Signals delivery fails constantly
>
> I'm guessing the switch from libgc-8.0.4 to libgc-8.2.2 has something to
> do with this.
I think I've found a workaround. I found a list of environment variables
[1] you can set to affect the GC behaviour, and the first one I tried
(GC_RETRY_SIGNALS=0) seems to have had the desired affect, in that the
crashes/restarts have stopped.
1: https://github.com/ivmai/bdwgc/blob/master/docs/README.environment
I've sent a patch [2] to apply this setting as part of the service.
2: https://issues.guix.gnu.org/63417
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Subject: bug#63368: Build coordiantor "Signals delivery fails constantly" crashes
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Hi,
Christopher Baines <mail@HIDDEN> skribis:
> Since the recent core-updates merge, I've seen the build coordinator
> using less memory, but it's also been crashing in a new way, up to 10
> times a day.
>
> In the log, you see something like:
>
> 2023-05-07 09:15:42 Signals delivery fails constantly at GC #71051
> 2023-05-07 09:15:42 Signals delivery fails constantly
>
> I'm guessing the switch from libgc-8.0.4 to libgc-8.2.2 has something to
> do with this.
Normally on GNU/Linux libgc has:
#define SIG_SUSPEND SIGPWR
The Coordinator fiddles with SIGALRM, SIGUSR1, SIGINT, and SIGPIPE,
which should normally be fine.
Is there anything else that might interfere with libgc?
Ludo=E2=80=99.
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Subject: bug#63368: Build coordiantor "Signals delivery fails constantly" crashes
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Ludovic Court=C3=A8s <ludo@HIDDEN> writes:
> Christopher Baines <mail@HIDDEN> skribis:
>
>> Since the recent core-updates merge, I've seen the build coordinator
>> using less memory, but it's also been crashing in a new way, up to 10
>> times a day.
>>
>> In the log, you see something like:
>>
>> 2023-05-07 09:15:42 Signals delivery fails constantly at GC #71051
>> 2023-05-07 09:15:42 Signals delivery fails constantly
>>
>> I'm guessing the switch from libgc-8.0.4 to libgc-8.2.2 has something to
>> do with this.
>
> Normally on GNU/Linux libgc has:
>
> #define SIG_SUSPEND SIGPWR
>
> The Coordinator fiddles with SIGALRM, SIGUSR1, SIGINT, and SIGPIPE,
> which should normally be fine.
>
> Is there anything else that might interfere with libgc?
I've seen this issue in both the build coordinator and nar-herder, both
of which use guile-sqlite, so I wonder if that could have something to
do with it.
--=-=-=
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X-Loop: help-debbugs@HIDDEN
Subject: bug#63368: Build coordiantor "Signals delivery fails constantly" crashes
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Christopher Baines <mail@HIDDEN> writes:
> Ludovic Court=C3=A8s <ludo@HIDDEN> writes:
>
>> Christopher Baines <mail@HIDDEN> skribis:
>>
>>> Since the recent core-updates merge, I've seen the build coordinator
>>> using less memory, but it's also been crashing in a new way, up to 10
>>> times a day.
>>>
>>> In the log, you see something like:
>>>
>>> 2023-05-07 09:15:42 Signals delivery fails constantly at GC #71051
>>> 2023-05-07 09:15:42 Signals delivery fails constantly
>>>
>>> I'm guessing the switch from libgc-8.0.4 to libgc-8.2.2 has something to
>>> do with this.
>>
>> Normally on GNU/Linux libgc has:
>>
>> #define SIG_SUSPEND SIGPWR
>>
>> The Coordinator fiddles with SIGALRM, SIGUSR1, SIGINT, and SIGPIPE,
>> which should normally be fine.
>>
>> Is there anything else that might interfere with libgc?
>
> I've seen this issue in both the build coordinator and nar-herder, both
> of which use guile-sqlite, so I wonder if that could have something to
> do with it.
I've seen this happen with the build coordinator agent now (on
milano-guix-1):
2023-06-02 18:59:55 2023-06-02 18:59:55 (DEBUG): fb9f06cf-cc1d-4493-88b8-=
3eac9437f5d4: checking the availability of build inputs
2023-06-02 18:59:55 2023-06-02 18:59:55 (INFO ): fb9f06cf-cc1d-4493-88b8-=
3eac9437f5d4: setup successful, building: /gnu/store/7fbrli2a8nzn676q8gz2b0=
i0y0lr9nxv-r-quasr-1.40.0.drv
2023-06-02 19:00:46 Signals delivery fails constantly at GC #55
2023-06-02 19:01:22 Signals delivery fails constantly
2023-06-02 19:01:29 locale is en_US.utf8
2023-06-02 19:01:29 (gnutls version: 3.7.7, guix version: 1.4.0-6.dc5430c)
Which is a bit more concerning, since the build coordinator agent is
intentionally quite simple (no SQLite for example).
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Christopher Baines <mail@HIDDEN> skribis:
> I've seen this happen with the build coordinator agent now (on
> milano-guix-1):
>
> 2023-06-02 18:59:55 2023-06-02 18:59:55 (DEBUG): fb9f06cf-cc1d-4493-88b=
8-3eac9437f5d4: checking the availability of build inputs
> 2023-06-02 18:59:55 2023-06-02 18:59:55 (INFO ): fb9f06cf-cc1d-4493-88b=
8-3eac9437f5d4: setup successful, building: /gnu/store/7fbrli2a8nzn676q8gz2=
b0i0y0lr9nxv-r-quasr-1.40.0.drv
> 2023-06-02 19:00:46 Signals delivery fails constantly at GC #55
> 2023-06-02 19:01:22 Signals delivery fails constantly
> 2023-06-02 19:01:29 locale is en_US.utf8
> 2023-06-02 19:01:29 (gnutls version: 3.7.7, guix version: 1.4.0-6.dc543=
0c)
>
> Which is a bit more concerning, since the build coordinator agent is
> intentionally quite simple (no SQLite for example).
The closure of (guix-build-coordinator agent) seems to be quite large
still.
Could you check what .so files are loaded by that code, perhaps via
/proc/PID/maps?
Thanks,
Ludo=E2=80=99.
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Ludovic Court=C3=A8s <ludo@HIDDEN> writes:
> Christopher Baines <mail@HIDDEN> skribis:
>
>> I've seen this happen with the build coordinator agent now (on
>> milano-guix-1):
>>
>> 2023-06-02 18:59:55 2023-06-02 18:59:55 (DEBUG):
>> fb9f06cf-cc1d-4493-88b8-3eac9437f5d4: checking the availability of
>> build inputs
>> 2023-06-02 18:59:55 2023-06-02 18:59:55 (INFO ):
>> fb9f06cf-cc1d-4493-88b8-3eac9437f5d4: setup successful, building:
>> /gnu/store/7fbrli2a8nzn676q8gz2b0i0y0lr9nxv-r-quasr-1.40.0.drv
>> 2023-06-02 19:00:46 Signals delivery fails constantly at GC #55
>> 2023-06-02 19:01:22 Signals delivery fails constantly
>> 2023-06-02 19:01:29 locale is en_US.utf8
>> 2023-06-02 19:01:29 (gnutls version: 3.7.7, guix version: 1.4.0-6.dc54=
30c)
>>
>> Which is a bit more concerning, since the build coordinator agent is
>> intentionally quite simple (no SQLite for example).
>
> The closure of (guix-build-coordinator agent) seems to be quite large
> still.
>
> Could you check what .so files are loaded by that code, perhaps via
> /proc/PID/maps?
I think I see these (that's on milano-guix-1 currently):
/gnu/store/0i81lpfnn05pmjc5f43q4nfvd27r08f7-guile-gnutls-3.7.12/lib/guile/3=
.0/extensions/guile-gnutls-v-2.so.0.0.0
/gnu/store/0jk7sl5xqwwdkzjpp9sxgz9z0d48a3vy-libunistring-1.0/lib/libunistri=
ng.so.2.2.0
/gnu/store/1r1azdi4hvfypnx14d01n60p4aa7g2im-libidn2-2.3.4/lib/libidn2.so.0.=
3.8
/gnu/store/1w1r6r56z9lhg8ghcb7lxss6mkn7d5l1-libgc-8.2.2/lib/libgc.so.1.5.1
/gnu/store/4gvgcfdiz67wv04ihqfa8pqwzsb0qpv5-guile-3.0.9/lib/libguile-3.0.so=
.1.6.0
/gnu/store/8y0pwifz8a3d7zbdfzsawa1amf4afx1s-libgcrypt-1.10.1/lib/libgcrypt.=
so.20.4.1
/gnu/store/930nwsiysdvy2x5zv1sf6v7ym75z8ayk-gcc-11.3.0-lib/lib/libgcc_s.so.1
/gnu/store/c2fx42ial6lr60s96xcbml5hd8vwaxq3-nettle-3.8.1/lib/libhogweed.so.=
6.6
/gnu/store/c2fx42ial6lr60s96xcbml5hd8vwaxq3-nettle-3.8.1/lib/libnettle.so.8=
.6
/gnu/store/gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35/lib/ld-linux-x86-64.=
so.2
/gnu/store/gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35/lib/libcrypt.so.1
/gnu/store/gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35/lib/libc.so.6
/gnu/store/gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35/lib/libm.so.6
/gnu/store/ib2n2vzqpchc3bhh9i712w5sq9zapn8d-gmp-6.2.1/lib/libgmp.so.10.4.1
/gnu/store/j5kzdjan6mnf2ngmkc50fia8vrbpqi9b-libtasn1-4.19.0/lib/libtasn1.so=
.6.6.3
/gnu/store/k0p01a6b7hsxjfr65ga4f2gh6lh92aiq-lzlib-1.13/lib/liblz.so.1.13
/gnu/store/m9wi9hcrf7f9dm4ri32vw1jrbh1csywi-libgpg-error-1.45/lib/libgpg-er=
ror.so.0.33.0
/gnu/store/slzq3zqwj75lbrg4ly51hfhbv2vhryv5-zlib-1.2.13/lib/libz.so.1.2.13
/gnu/store/vq7dxp5la2lnhsvniwv38j0ggvsmzim7-p11-kit-0.24.1/lib/libp11-kit.s=
o.0.3.0
/gnu/store/w8b0l8hk6g0fahj4fvmc4qqm3cvaxnmv-libffi-3.4.4/lib/libffi.so.8.1.2
/gnu/store/yr4lbvdyc4dgs76yij1dw2w2z8s84af8-gnutls-3.7.7/lib/libgnutls.so.3=
0.34.1
--=-=-=
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--=-=-=--
X-Loop: help-debbugs@HIDDEN
Subject: bug#63368: Build coordiantor "Signals delivery fails constantly" crashes
Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
References: <87mt2fytxh.fsf@HIDDEN> <87cz2ocu2f.fsf@HIDDEN>
<877csw4dvt.fsf@HIDDEN> <871qit7pq7.fsf@HIDDEN>
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Date: Fri, 09 Jun 2023 15:14:22 +0200
In-Reply-To: <87wn0g1utn.fsf@HIDDEN> (Christopher Baines's message of
"Tue, 06 Jun 2023 16:19:39 +0100")
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Christopher Baines <mail@HIDDEN> skribis:
> Ludovic Court=C3=A8s <ludo@HIDDEN> writes:
>
>> Christopher Baines <mail@HIDDEN> skribis:
[...]
>>> 2023-06-02 19:01:22 Signals delivery fails constantly
>>> 2023-06-02 19:01:29 locale is en_US.utf8
>>> 2023-06-02 19:01:29 (gnutls version: 3.7.7, guix version: 1.4.0-6.dc5=
430c)
>>>
>>> Which is a bit more concerning, since the build coordinator agent is
>>> intentionally quite simple (no SQLite for example).
>>
>> The closure of (guix-build-coordinator agent) seems to be quite large
>> still.
>>
>> Could you check what .so files are loaded by that code, perhaps via
>> /proc/PID/maps?
>
> I think I see these (that's on milano-guix-1 currently):
>
> /gnu/store/0i81lpfnn05pmjc5f43q4nfvd27r08f7-guile-gnutls-3.7.12/lib/guile=
/3.0/extensions/guile-gnutls-v-2.so.0.0.0
> /gnu/store/0jk7sl5xqwwdkzjpp9sxgz9z0d48a3vy-libunistring-1.0/lib/libunist=
ring.so.2.2.0
> /gnu/store/1r1azdi4hvfypnx14d01n60p4aa7g2im-libidn2-2.3.4/lib/libidn2.so.=
0.3.8
> /gnu/store/1w1r6r56z9lhg8ghcb7lxss6mkn7d5l1-libgc-8.2.2/lib/libgc.so.1.5.1
> /gnu/store/4gvgcfdiz67wv04ihqfa8pqwzsb0qpv5-guile-3.0.9/lib/libguile-3.0.=
so.1.6.0
> /gnu/store/8y0pwifz8a3d7zbdfzsawa1amf4afx1s-libgcrypt-1.10.1/lib/libgcryp=
t.so.20.4.1
> /gnu/store/930nwsiysdvy2x5zv1sf6v7ym75z8ayk-gcc-11.3.0-lib/lib/libgcc_s.s=
o.1
> /gnu/store/c2fx42ial6lr60s96xcbml5hd8vwaxq3-nettle-3.8.1/lib/libhogweed.s=
o.6.6
> /gnu/store/c2fx42ial6lr60s96xcbml5hd8vwaxq3-nettle-3.8.1/lib/libnettle.so=
.8.6
> /gnu/store/gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35/lib/ld-linux-x86-6=
4.so.2
> /gnu/store/gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35/lib/libcrypt.so.1
> /gnu/store/gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35/lib/libc.so.6
> /gnu/store/gsjczqir1wbz8p770zndrpw4rnppmxi3-glibc-2.35/lib/libm.so.6
> /gnu/store/ib2n2vzqpchc3bhh9i712w5sq9zapn8d-gmp-6.2.1/lib/libgmp.so.10.4.1
> /gnu/store/j5kzdjan6mnf2ngmkc50fia8vrbpqi9b-libtasn1-4.19.0/lib/libtasn1.=
so.6.6.3
> /gnu/store/k0p01a6b7hsxjfr65ga4f2gh6lh92aiq-lzlib-1.13/lib/liblz.so.1.13
> /gnu/store/m9wi9hcrf7f9dm4ri32vw1jrbh1csywi-libgpg-error-1.45/lib/libgpg-=
error.so.0.33.0
> /gnu/store/slzq3zqwj75lbrg4ly51hfhbv2vhryv5-zlib-1.2.13/lib/libz.so.1.2.13
> /gnu/store/vq7dxp5la2lnhsvniwv38j0ggvsmzim7-p11-kit-0.24.1/lib/libp11-kit=
.so.0.3.0
> /gnu/store/w8b0l8hk6g0fahj4fvmc4qqm3cvaxnmv-libffi-3.4.4/lib/libffi.so.8.=
1.2
> /gnu/store/yr4lbvdyc4dgs76yij1dw2w2z8s84af8-gnutls-3.7.7/lib/libgnutls.so=
.30.34.1
Hmm no idea. I=E2=80=99ve never seen =E2=80=9CSignals delivery fails=E2=80=
=9D before so I
really wonder what could be causing this. Would be great if you could
come up with a reduced test case, but I guess that won=E2=80=99t be easy.
Or perhaps you could run a Coordinator agent under =E2=80=98strace -f=E2=80=
=99 to see if
we get hints?
Ludo=E2=80=99.
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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
In-Reply-To: <87mt2fytxh.fsf@HIDDEN> (Christopher Baines's message of
"Mon, 08 May 2023 11:45:21 +0100")
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Christopher Baines <mail@HIDDEN> skribis:
> Since the recent core-updates merge, I've seen the build coordinator
> using less memory, but it's also been crashing in a new way, up to 10
> times a day.
>
> In the log, you see something like:
>
> 2023-05-07 09:15:42 Signals delivery fails constantly at GC #71051
> 2023-05-07 09:15:42 Signals delivery fails constantly
Same with =E2=80=98guix publish=E2=80=99: https://issues.guix.gnu.org/74632
> I'm guessing the switch from libgc-8.0.4 to libgc-8.2.2 has something to
> do with this.
I=E2=80=99m not sure when these started to happen for =E2=80=98guix publish=
=E2=80=99.
Data point: the =E2=80=98guix publish=E2=80=99 instance at guix.bordeaux.in=
ria.fr never
encountered this problem. The main difference compared to ci.guix is
that it does not produce lzip archives. (I see the Coordinator uses
Guile-Lzlib; maybe that=E2=80=99s a lead.)
Ludo=E2=80=99.
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