IR: unimplemented insn: B348 0010 on s390x in apt

[Balint Reczey]

apt's autopkgtest triggers a Valgrind error:

http://autopkgtest.ubuntu.com/packages/a/apt/focal/s390x

https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/s390x/a/apt/20200205_194314_57d5d@/log.gz :

Test for successful execution of valgrind aptget update -o Acquire::Queue-Mode=access … ==203867== Memcheck, a memory error detector
==203867== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==203867== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==203867== Command: /usr/bin/apt-get update -o Acquire::Queue-Mode=access
==203867==
vex s390->IR: unimplemented insn: B348 0010
==203867== valgrind: Unrecognised instruction at address 0x4ba27f6.
==203867== at 0x4BA27F6: std::__detail::_Prime_rehash_policy::_M_need_rehash(unsigned long, unsigned long, unsigned long) const (in /usr/lib/s390x-linux-gnu/libstdc++.so.6.0.28)
==203867== by 0x4985DAB: ReadConfigFile(Configuration&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool const&, unsigned int const&) (in /usr/lib/s390x-linux-gnu/libapt-pkg.so.5.90.0)
==203867== by 0x4A218D9: pkgInitConfig(Configuration&) (in /usr/lib/s390x-linux-gnu/libapt-pkg.so.5.90.0)
==203867== by 0x486801D: ParseCommandLine(CommandLine&, APT_CMD, Configuration* const*, pkgSystem**, int, char const**, bool (*)(CommandLine&), std::vector<aptDispatchWithHelp, std::allocator<aptDispatchWithHelp> > (*)()) (in /usr/lib/s390x-linux-gnu/libapt-private.so.0.0.0)
==203867== by 0x10BE3B: main (in /usr/bin/apt-get)
==203867== Your program just tried to execute an instruction that Valgrind
==203867== did not recognise. There are two possible reasons for this.
==203867== 1. Your program has a bug and erroneously jumped to a non-code
==203867== location. If you are running Memcheck and you just saw a
==203867== warning about a bad jump, it's probably your program's fault.
==203867== 2. The instruction is legitimate but Valgrind doesn't handle it,
==203867== i.e. it's Valgrind's fault. If you think this is the case or
==203867== you are not sure, please let us know and we'll try to fix it.
==203867== Either way, Valgrind will now raise a SIGILL signal which will
==203867== probably kill your program.
==203867==
==203867== Process terminating with default action of signal 4 (SIGILL)
==203867== Illegal opcode at address 0x4BA27F6
==203867== at 0x4BA27F6: std::__detail::_Prime_rehash_policy::_M_need_rehash(unsigned long, unsigned long, unsigned long) const (in /usr/lib/s390x-linux-gnu/libstdc++.so.6.0.28)
==203867== by 0x4985DAB: ReadConfigFile(Configuration&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool const&, unsigned int const&) (in /usr/lib/s390x-linux-gnu/libapt-pkg.so.5.90.0)
==203867== by 0x4A218D9: pkgInitConfig(Configuration&) (in /usr/lib/s390x-linux-gnu/libapt-pkg.so.5.90.0)
==203867== by 0x486801D: ParseCommandLine(CommandLine&, APT_CMD, Configuration* const*, pkgSystem**, int, char const**, bool (*)(CommandLine&), std::vector<aptDispatchWithHelp, std::allocator<aptDispatchWithHelp> > (*)()) (in /usr/lib/s390x-linux-gnu/libapt-private.so.0.0.0)
==203867== by 0x10BE3B: main (in /usr/bin/apt-get)
==203867==
==203867== HEAP SUMMARY:
==203867== in use at exit: 84,929 bytes in 866 blocks
==203867== total heap usage: 4,880 allocs, 4,014 frees, 438,639 bytes allocated
==203867==
==203867== LEAK SUMMARY:
==203867== definitely lost: 0 bytes in 0 blocks
==203867== indirectly lost: 0 bytes in 0 blocks
==203867== possibly lost: 0 bytes in 0 blocks
==203867== still reachable: 84,929 bytes in 866 blocks
==203867== suppressed: 0 bytes in 0 blocks
==203867== Rerun with --leak-check=full to see details of leaked memory
==203867==
==203867== For lists of detected and suppressed errors, rerun with: -s
==203867== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Illegal instruction (core dumped)
FAIL: exitcode 132
...

[Launchpad Janitor (janitor)]

This bug was fixed in the package valgrind - 1:3.15.0-1ubuntu7

---------------
valgrind (1:3.15.0-1ubuntu7) focal; urgency=medium

  * Cherry pick upstream commit Bug 416301 - s390x: Support
    "compare and signal" instructions (LP: #1862183)

 -- Julian Andres Klode <email address hidden> Thu, 06 Feb 2020 15:49:24 +0100