Re: valgrind reports uninitialized values in dl-reloc.c
Yuri D'Elia a écrit :
> Hi everyone. I'm posting this directly to the list, since I'm unsure whether this is a glibc optimization that should be filtered, a valgrind bug or a real glibc bug.
This should be whitelisted in valgrind.
> I'm running valgrind 3.5.0 from sid against libc6-2.10.1-3 on amd64 on several executables, and I'm getting these reports:
>
> ==7254== Conditional jump or move depends on uninitialised value(s)
> ==7254== at 0x400A7ED: _dl_relocate_object (do-rel.h:65)
> ==7254== by 0x40117DA: dl_open_worker (dl-open.c:402)
> ==7254== by 0x400D135: _dl_catch_error (dl-error.c:178)
> ==7254== by 0x4011046: _dl_open (dl-open.c:615)
> ==7254== by 0x55D6F65: dlopen_doit (dlopen.c:67)
> ==7254== by 0x400D135: _dl_catch_error (dl-error.c:178)
> ==7254== by 0x55D72EB: _dlerror_run (dlerror.c:164)
> ==7254== by 0x55D6EE0: dlopen@@GLIBC_2.2.5 (dlopen.c:88)
> ==7254== by 0x63B5DE: loadLibrary (dynload.c:92)
> ==7254== by 0x4EA564: AddDLL (Rdynload.c:532)
> ==7254== by 0x4EB176: do_dynload (Rdynload.c:891)
> ==7254== by 0x431C51: do_internal (names.c:1165)
> ==7254== Uninitialised value was created by a stack allocation
> ==7254== at 0x400A690: _dl_relocate_object (dl-reloc.c:155)
> ==7254==
> ==7254== Conditional jump or move depends on uninitialised value(s)
> ==7254== at 0x400AD83: _dl_relocate_object (do-rel.h:104)
> ==7254== by 0x40117DA: dl_open_worker (dl-open.c:402)
> ==7254== by 0x400D135: _dl_catch_error (dl-error.c:178)
> ==7254== by 0x4011046: _dl_open (dl-open.c:615)
> ==7254== by 0x55D6F65: dlopen_doit (dlopen.c:67)
> ==7254== by 0x400D135: _dl_catch_error (dl-error.c:178)
> ==7254== by 0x55D72EB: _dlerror_run (dlerror.c:164)
> ==7254== by 0x55D6EE0: dlopen@@GLIBC_2.2.5 (dlopen.c:88)
> ==7254== by 0x63B5DE: loadLibrary (dynload.c:92)
> ==7254== by 0x4EA564: AddDLL (Rdynload.c:532)
> ==7254== by 0x4EB176: do_dynload (Rdynload.c:891)
> ==7254== by 0x431C51: do_internal (names.c:1165)
> ==7254== Uninitialised value was created by a stack allocation
> ==7254== at 0x400A690: _dl_relocate_object (dl-reloc.c:155)
> ==7254==
> ==7254== Conditional jump or move depends on uninitialised value(s)
> ==7254== at 0x400A9CF: _dl_relocate_object (do-rel.h:117)
> ==7254== by 0x40117DA: dl_open_worker (dl-open.c:402)
> ==7254== by 0x400D135: _dl_catch_error (dl-error.c:178)
> ==7254== by 0x4011046: _dl_open (dl-open.c:615)
> ==7254== by 0x55D6F65: dlopen_doit (dlopen.c:67)
> ==7254== by 0x400D135: _dl_catch_error (dl-error.c:178)
> ==7254== by 0x55D72EB: _dlerror_run (dlerror.c:164)
> ==7254== by 0x55D6EE0: dlopen@@GLIBC_2.2.5 (dlopen.c:88)
> ==7254== by 0x63B5DE: loadLibrary (dynload.c:92)
> ==7254== by 0x4EA564: AddDLL (Rdynload.c:532)
> ==7254== by 0x4EB176: do_dynload (Rdynload.c:891)
> ==7254== by 0x431C51: do_internal (names.c:1165)
> ==7254== Uninitialised value was created by a stack allocation
> ==7254== at 0x400A690: _dl_relocate_object (dl-reloc.c:155)
>
> Thanks.
>
>
>
--
Aurelien Jarno GPG: 1024D/F1BCDB73
aurelien@aurel32.net http://www.aurel32.net
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