Package: valgrind
Version: 1:3.9.0-6
Severity: normal
Tags: patch upstream
valgrind happens to announce RTM flag in cpuid (as can be seen by running
valgrind cpuid), but only implements XBEGIN, not XABORT [1]. This confuses
pthread to use lock elision [2] and therefore programs using pthread mutexes
crash. I can reproduce this using e.g.
ROOTDIR=/usr/lib/erlang BINDIR=/usr/lib/erlang/erts-6.1/bin valgrind
/usr/lib/erlang/erts-6.1/bin/beam.smp -sbt db -- -root /usr/lib/erlang
-progname erl
[1]
http://anonscm.debian.org/gitweb/?p=collab-maint/valgrind.git;a=blob;f=VEX/priv/guest_amd64_toIR.c;h=a17c8f4b0c05d4b8e5e80894ce68ec15b9bac2aa;hb=HEAD#l20253
[2] http://fossies.org/dox/glibc-2.19/elision-conf_8c_source.html#l00065
This is fixed in upstream: https://bugs.kde.org/show_bug.cgi?id=328100
Alternatively, not announcing RTM in cpuid should fix this as well:
http://anonscm.debian.org/gitweb/?p=collab-maint/valgrind.git;a=blob;f=VEX/priv/guest_amd64_helpers.c;h=021aceabbabc20dda6e5f5cfbbdca10129cb9a91;hb=HEAD#l2654
-- System Information:
Debian Release: jessie/sid
APT prefers testing
APT policy: (980, 'testing'), (980, 'stable'), (500, 'unstable'), (500,
'stable'), (200, 'experimental')
Architecture: i386 (x86_64)
Foreign Architectures: amd64
Kernel: Linux 3.15.2-lis64+ (SMP w/4 CPU cores)
Locale: LANG=cs_CZ.UTF-8, LC_CTYPE=cs_CZ.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages valgrind depends on:
ii libc6 2.19-4
ii libc6-dbg 2.19-4
Versions of packages valgrind recommends:
ii gdb 7.6.2-1.1+b1
pn valgrind-dbg <none>
Versions of packages valgrind suggests:
pn alleyoop <none>
ii kcachegrind 4:4.13.1-1
pn valgrind-mpi <none>
pn valkyrie <none>
-- no debconf information
--
Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/
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