GNU bug report logs - #43048
QEMU 5 fails its test suite on some machines (e.g., AMD Ryzen 3900X)

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#43048: closed (QEMU 5 fails its test suite on some machines
 (e.g., AMD Ryzen 3900X))
Date: Sun, 20 Sep 2020 03:30:02 +0000

[Message part 1 (text/plain, inline)]

Your message dated Sat, 19 Sep 2020 23:30:04 -0400
with message-id <877dspxgzn.fsf <at> gmail.com>
and subject line Re: bug#43048: QEMU 5 fails its test suite
has caused the debbugs.gnu.org bug report #43048,
regarding QEMU 5 fails its test suite on some machines (e.g., AMD Ryzen 3900X)
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
43048: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=43048
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Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: bug-guix <bug-guix <at> gnu.org>
Subject: QEMU 5 fails its test suite
Date: Tue, 25 Aug 2020 14:59:26 -0400

Hello,

Found while reconfiguring with Guix at commit fbd36a233420757e11b6abb076647781d4e5652d:

--8<---------------cut here---------------start------------->8---
SS 17 hd-geo-test /i386/hd-geo/override/virtio_hot_unplug
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=i386-softmmu/qemu-system-i386 QTEST_QEMU_IMG=qemu-img tests/qtest/boot-order-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="boot-order-test" 
PASS 1 boot-order-test /i386/boot-order/pc
MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=i386-softmmu/qemu-system-i386 QTEST_QEMU_IMG=qemu-img tests/qtest/bios-tables-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="bios-tables-test" 
qemu-system-i386: error: failed to set MSR 0x4b564d02 to 0x0
qemu-system-i386: /tmp/guix-build-qemu-5.0.0.drv-0/qemu-5.0.0/target/i386/kvm.c:2695: kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
Broken pipe
tests/qtest/libqtest.c:175: kill_qemu() detected QEMU death from signal 6 (Aborted)
ERROR - too few tests run (expected 17, got 0)
make: *** [/tmp/guix-build-qemu-5.0.0.drv-0/qemu-5.0.0/tests/Makefile.include:636: check-qtest-i386] Error 1

Test suite failed, dumping logs.
command "make" "check" "V=1" failed with status 2
builder for `/gnu/store/xkw86xzrqamn9kjihkdwrfiadvmxrxh1-qemu-5.0.0.drv' failed with exit code 1
build of /gnu/store/xkw86xzrqamn9kjihkdwrfiadvmxrxh1-qemu-5.0.0.drv failed
View build log at '/var/log/guix/drvs/xk/w86xzrqamn9kjihkdwrfiadvmxrxh1-qemu-5.0.0.drv.bz2'.
guix system: error: build of
`/gnu/store/xkw86xzrqamn9kjihkdwrfiadvmxrxh1-qemu-5.0.0.drv' failed
--8<---------------cut here---------------end--------------->8---

Maxim

[Message part 3 (message/rfc822, inline)]

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: 43048-done <at> debbugs.gnu.org
Subject: Re: bug#43048: QEMU 5 fails its test suite
Date: Sat, 19 Sep 2020 23:30:04 -0400

Hello,

Maxim Cournoyer <maxim.cournoyer <at> gmail.com> writes:

> Hello,
>
> Found while reconfiguring with Guix at commit fbd36a233420757e11b6abb076647781d4e5652d:
>
> SS 17 hd-geo-test /i386/hd-geo/override/virtio_hot_unplug
> MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=i386-softmmu/qemu-system-i386 QTEST_QEMU_IMG=qemu-img tests/qtest/boot-order-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="boot-order-test" 
> PASS 1 boot-order-test /i386/boot-order/pc
> MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}  QTEST_QEMU_BINARY=i386-softmmu/qemu-system-i386 QTEST_QEMU_IMG=qemu-img tests/qtest/bios-tables-test -m=quick -k --tap < /dev/null | ./scripts/tap-driver.pl --test-name="bios-tables-test" 
> qemu-system-i386: error: failed to set MSR 0x4b564d02 to 0x0
> qemu-system-i386: /tmp/guix-build-qemu-5.0.0.drv-0/qemu-5.0.0/target/i386/kvm.c:2695: kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
> Broken pipe
> tests/qtest/libqtest.c:175: kill_qemu() detected QEMU death from signal 6 (Aborted)
> ERROR - too few tests run (expected 17, got 0)
> make: *** [/tmp/guix-build-qemu-5.0.0.drv-0/qemu-5.0.0/tests/Makefile.include:636: check-qtest-i386] Error 1
>
> Test suite failed, dumping logs.
> command "make" "check" "V=1" failed with status 2
> builder for `/gnu/store/xkw86xzrqamn9kjihkdwrfiadvmxrxh1-qemu-5.0.0.drv' failed with exit code 1
> build of /gnu/store/xkw86xzrqamn9kjihkdwrfiadvmxrxh1-qemu-5.0.0.drv failed
> View build log at '/var/log/guix/drvs/xk/w86xzrqamn9kjihkdwrfiadvmxrxh1-qemu-5.0.0.drv.bz2'.
> guix system: error: build of
> `/gnu/store/xkw86xzrqamn9kjihkdwrfiadvmxrxh1-qemu-5.0.0.drv' failed

I was able to reproduce this on the master branch of QEMU and could get
a backtrace.  I opened an upstream ticket with QEMU here:
https://bugs.launchpad.net/qemu/+bug/1896263.

In the meantime, this is worked around in our qemu package by disabling
the bios-tables-test test (pushed with commit
afeed71ae447ea18f7bc1b0b331e73e995308251).

Closing,

Maxim

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