Bug#529587: Can't handle mfpvr instruction
Package: valgrind
Version: 1:3.4.1-1
Severity: important
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Since upgrading libc6 to 2.9-12, running any program in valgrind fails with
2417== Memcheck, a memory error detector.
==2417== Copyright (C) 2002-2008, and GNU GPL'd, by Julian Seward et al.
==2417== Using LibVEX rev 1884, a library for dynamic binary translation.
==2417== Copyright (C) 2004-2008, and GNU GPL'd, by OpenWorks LLP.
==2417== Using valgrind-3.4.1-Debian, a dynamic binary instrumentation framework.
==2417== Copyright (C) 2000-2008, and GNU GPL'd, by Julian Seward et al.
==2417== For more details, rerun with: -v
==2417==
dis_proc_ctl(ppc)(mfspr,SPR)(0x11F)
disInstr(ppc): unhandled instruction: 0x7D3F42A6
primary 31(0x1F), secondary 678(0x2A6)
==2417== valgrind: Unrecognised instruction at address 0x4016164.
==2417== Your program just tried to execute an instruction that Valgrind
==2417== did not recognise. There are two possible reasons for this.
==2417== 1. Your program has a bug and erroneously jumped to a non-code
==2417== location. If you are running Memcheck and you just saw a
==2417== warning about a bad jump, it's probably your program's fault.
==2417== 2. The instruction is legitimate but Valgrind doesn't handle it,
==2417== i.e. it's Valgrind's fault. If you think this is the case or
==2417== you are not sure, please let us know and we'll try to fix it.
==2417== Either way, Valgrind will now raise a SIGILL signal which will
==2417== probably kill your program.
==2417==
==2417== Process terminating with default action of signal 4 (SIGILL)
==2417== Illegal opcode at address 0x4016164
==2417== at 0x4016164: _dl_sysdep_start (dl-sysdep.c:177)
==2417== by 0x4002233: _dl_start_final (rtld.c:332)
==2417== by 0x4002817: _dl_start (rtld.c:560)
==2417== by 0x4016FB7: _start (in /lib/ld-2.9.so)
Disassembling the failing instruction in gdb reveals
0x04016164: mfpvr r9
Downgrading libc6 to 2.9-10 works around the problem, apparently that
version didn't use this instruction yet.
- -- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'stable'), (102, 'experimental')
Architecture: powerpc (ppc)
Kernel: Linux 2.6.29.3
Locale: LANG=de_CH.UTF-8, LC_CTYPE=de_CH.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages valgrind depends on:
ii libc6 2.9-12 GNU C Library: Shared libraries
Versions of packages valgrind recommends:
ii gdb 6.8.50.20090116.python-1 The GNU Debugger
Versions of packages valgrind suggests:
ii alleyoop 0.9.3-2 Front-end to the Valgrind memory c
ii kcachegrind 4:4.2.2-1 visualisation tool for the Valgrin
ii libc6-dbg 2.9-12 GNU C Library: detached debugging
- -- no debconf information
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