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From: "werner at suse dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/29327] A SIGSEGV in hardware optimized memset for sse2
 __memset_sse2_unaligned_erms()
Date: Fri, 22 Jul 2022 11:04:17 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29327

--- Comment #28 from Dr. Werner Fink <werner at suse dot de> ---
Created attachment 14224
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D14224&action=3Ded=
it
log2 --- ltrace log

(In reply to H.J. Lu from comment #27)
> libmemusage.so implements free, realloc, malloc and calloc.  Glibc also h=
as
> posix_memalign, aligned_alloc, valloc, memalign and pvalloc.  If any of t=
hem
> are
> used, free in libmemusage.so may free the wrong memory.

I've tried the following

( setenv LD_PRELOAD /lib64/libmemusage.so ; setenv MEMUSAGE_OUTPUT /dev/nul=
l ;
setenv MEMUSAGE_TRACE_MMAP yes ; ltrace -f -s 1024 -o log2 -e
'malloc+free+memset-@libc.so*' /usr/lib64/kodi/kodi.bin )

as well as

( setenv LD_PRELOAD /lib64/libmemusage.so ; setenv MEMUSAGE_OUTPUT /dev/nul=
l ;
setenv MEMUSAGE_TRACE_MMAP yes ; strace -f -s 1024 -o log
/usr/lib64/kodi/kodi.bin )

.. yes I'm a tcsh user :)

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