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From: "werner at suse dot de" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug string/29327] A SIGSEGV in hardware optimized memset for sse2
 __memset_sse2_unaligned_erms()
Date: Mon, 25 Jul 2022 06:00:52 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29327

--- Comment #31 from Dr. Werner Fink <werner at suse dot de> ---
(In reply to Noah Goldstein from comment #30)
> (In reply to Dr. Werner Fink from comment #lib29)
> > Maybe it is a combination of preloading libmemusage.so with a program u=
sing
> > the libsqlite3.so.0 as 68701503120 bytes seems to be very large for the
> > address 0x2db2320 as well as this address seems not be (m)allocated bef=
ore
> > as the addresses before
> Is there a reason to think this is a bug with memset and not invalid
> parameters?

If this is a bug with memset ... I don't know.  What I know is that the bug
happens if libmemusage.so is preloaded.  And I'm not the only one, see

 https://bugzilla.opensuse.org/show_bug.cgi?id=3D1201047#c14

interestingly if I use heaptrack (https://userbase.kde.org/Heaptrack) this
crash does not happen.  Also various valgrind tools do not trigger such a
crash.

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