Your message dated Mon, 24 Aug 2009 19:58:37 +0200 with message-id <[email protected]> and subject line Re: Bug#543379: libc6: Valgrind says getprotobyname(3) performs an invalid read has caused the Debian Bug report #543379, regarding libc6: Valgrind says getprotobyname(3) performs an invalid read to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 543379: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=543379 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: libc6 Version: 2.7-18 Severity: normal Valgrind says getprotobyname(3) performs an invalid read. Compile and (valgrind-)execute the following C code: /* main.c * compile with: gcc main.c * valgrind-execute with: valgrind --tool=memcheck --partial-loads-ok=no ./a.out */ #include <netdb.h> int main(int argc, char ** argv) { getprotobyname("tcp"); } You will get the followin output: ==4325== Memcheck, a memory error detector. ==4325== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al. ==4325== Using LibVEX rev 1854, a library for dynamic binary translation. ==4325== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP. ==4325== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation framework. ==4325== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al. ==4325== For more details, rerun with: -v ==4325== ==4325== Invalid read of size 4 ==4325== at 0x4015847: (within /lib/ld-2.7.so) ==4325== by 0x4158131: (within /lib/i686/cmov/libc-2.7.so) ==4325== by 0x400DA15: (within /lib/ld-2.7.so) ==4325== by 0x41582F4: __libc_dlopen_mode (in /lib/i686/cmov/libc-2.7.so) ==4325== by 0x41306DF: __nss_lookup_function (in /lib/i686/cmov/libc-2.7.so) ==4325== by 0x41307CF: (within /lib/i686/cmov/libc-2.7.so) ==4325== by 0x41324D5: (within /lib/i686/cmov/libc-2.7.so) ==4325== by 0x41389F0: getprotobyname_r (in /lib/i686/cmov/libc-2.7.so) ==4325== by 0x41387E6: getprotobyname (in /lib/i686/cmov/libc-2.7.so) ==4325== by 0x80483C0: main (in /tmp/a.out) ==4325== Address 0x4199f74 is 44 bytes inside a block of size 46 alloc'd ==4325== at 0x4023D6E: malloc (vg_replace_malloc.c:207) ==4325== by 0x400DB23: (within /lib/ld-2.7.so) ==4325== by 0x4008555: (within /lib/ld-2.7.so) ==4325== by 0x4011B46: (within /lib/ld-2.7.so) ==4325== by 0x400DA15: (within /lib/ld-2.7.so) ==4325== by 0x401154D: (within /lib/ld-2.7.so) ==4325== by 0x4158131: (within /lib/i686/cmov/libc-2.7.so) ==4325== by 0x400DA15: (within /lib/ld-2.7.so) ==4325== by 0x41582F4: __libc_dlopen_mode (in /lib/i686/cmov/libc-2.7.so) ==4325== by 0x41306DF: __nss_lookup_function (in /lib/i686/cmov/libc-2.7.so) ==4325== by 0x41307CF: (within /lib/i686/cmov/libc-2.7.so) ==4325== by 0x41324D5: (within /lib/i686/cmov/libc-2.7.so) ==4325== ==4325== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 30 from 3) ==4325== malloc/free: in use at exit: 0 bytes in 0 blocks. ==4325== malloc/free: 43 allocs, 43 frees, 3,591 bytes allocated. ==4325== For counts of detected errors, rerun with: -v ==4325== All heap blocks were freed -- no leaks are possible. If you valgrind-execute ignoring partial-loads, you wont get the error: valgrind --tool=memcheck --partial-loads-ok=yes ./a.out ==4326== Memcheck, a memory error detector. ==4326== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al. ==4326== Using LibVEX rev 1854, a library for dynamic binary translation. ==4326== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP. ==4326== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation framework. ==4326== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al. ==4326== For more details, rerun with: -v ==4326== ==4326== ==4326== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 29 from 2) ==4326== malloc/free: in use at exit: 0 bytes in 0 blocks. ==4326== malloc/free: 43 allocs, 43 frees, 3,591 bytes allocated. ==4326== For counts of detected errors, rerun with: -v ==4326== All heap blocks were freed -- no leaks are possible. -- System Information: Debian Release: 5.0.2 APT prefers stable APT policy: (500, 'stable') Architecture: i386 (i686) Kernel: Linux 2.6.29.1 Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages libc6 depends on: ii libgcc1 1:4.3.2-1.1 GCC support library libc6 recommends no packages. Versions of packages libc6 suggests: ii glibc-doc 2.7-18 GNU C Library: Documentation ii libc6-i686 2.7-18 GNU C Library: Shared libraries [i ii locales 2.7-18 GNU C Library: National Language ( -- debconf information: glibc/upgrade: true glibc/restart-failed: * glibc/restart-services: ssh rsync openbsd-inetd exim4 cron atd
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--- Begin Message ---Version: 2.9-1 On Mon, Aug 24, 2009 at 05:47:23PM +0200, Alberto Cortes wrote: > Package: libc6 > Version: 2.7-18 > Severity: normal > > Valgrind says getprotobyname(3) performs an invalid read. > > Compile and (valgrind-)execute the following C code: > > /* main.c > * compile with: gcc main.c > * valgrind-execute with: valgrind --tool=memcheck --partial-loads-ok=no > ./a.out > */ > #include <netdb.h> > int main(int argc, char ** argv) { > getprotobyname("tcp"); > } > > > You will get the followin output: > ==4325== Memcheck, a memory error detector. > ==4325== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al. > ==4325== Using LibVEX rev 1854, a library for dynamic binary translation. > ==4325== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP. > ==4325== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation > framework. > ==4325== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al. > ==4325== For more details, rerun with: -v > ==4325== > ==4325== Invalid read of size 4 > ==4325== at 0x4015847: (within /lib/ld-2.7.so) > ==4325== by 0x4158131: (within /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x400DA15: (within /lib/ld-2.7.so) > ==4325== by 0x41582F4: __libc_dlopen_mode (in /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x41306DF: __nss_lookup_function (in > /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x41307CF: (within /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x41324D5: (within /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x41389F0: getprotobyname_r (in /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x41387E6: getprotobyname (in /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x80483C0: main (in /tmp/a.out) > ==4325== Address 0x4199f74 is 44 bytes inside a block of size 46 alloc'd > ==4325== at 0x4023D6E: malloc (vg_replace_malloc.c:207) > ==4325== by 0x400DB23: (within /lib/ld-2.7.so) > ==4325== by 0x4008555: (within /lib/ld-2.7.so) > ==4325== by 0x4011B46: (within /lib/ld-2.7.so) > ==4325== by 0x400DA15: (within /lib/ld-2.7.so) > ==4325== by 0x401154D: (within /lib/ld-2.7.so) > ==4325== by 0x4158131: (within /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x400DA15: (within /lib/ld-2.7.so) > ==4325== by 0x41582F4: __libc_dlopen_mode (in /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x41306DF: __nss_lookup_function (in > /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x41307CF: (within /lib/i686/cmov/libc-2.7.so) > ==4325== by 0x41324D5: (within /lib/i686/cmov/libc-2.7.so) > ==4325== > ==4325== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 30 from 3) > ==4325== malloc/free: in use at exit: 0 bytes in 0 blocks. > ==4325== malloc/free: 43 allocs, 43 frees, 3,591 bytes allocated. > ==4325== For counts of detected errors, rerun with: -v > ==4325== All heap blocks were freed -- no leaks are possible. > > If you valgrind-execute ignoring partial-loads, you wont get the error: > valgrind --tool=memcheck --partial-loads-ok=yes ./a.out > ==4326== Memcheck, a memory error detector. > ==4326== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al. > ==4326== Using LibVEX rev 1854, a library for dynamic binary translation. > ==4326== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP. > ==4326== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation > framework. > ==4326== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al. > ==4326== For more details, rerun with: -v > ==4326== > ==4326== > ==4326== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 29 from 2) > ==4326== malloc/free: in use at exit: 0 bytes in 0 blocks. > ==4326== malloc/free: 43 allocs, 43 frees, 3,591 bytes allocated. > ==4326== For counts of detected errors, rerun with: -v > ==4326== All heap blocks were freed -- no leaks are possible. > > Marking the bug as fixed in version 2.9. -- Aurelien Jarno GPG: 1024D/F1BCDB73 [email protected] http://www.aurel32.net
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