Re: glibc: causes segfault in Xorg
clone 625521 -1
severity 625521 grave
severity -1 important
reassign -1 libc6 2.13-0exp1
retitle -1 glibc: memcpy copies down on amd64
tags -1 upstream patch fixed-upstream
# sorry for the noise
quit
Jonathan Nieder wrote:
> Sounds like http://sourceware.org/bugzilla/show_bug.cgi?id=12518
> which is fixed (sort of) by commit 0354e355 (2011-04-01).
By the way, in principle that might be a nice commit to cherry-pick.
Not sure how to do it safely, though --- backing out the amd64
optimization would hide important bugs that can cause suffering later,
while applying upstream's fix would mean that apps linked against libc
would use new ABI.
I guess reverting glibc-2.13~215 (Improve 64bit memcpy/memmove for
Atom, Core 2 and Core i7, 2010-06-30) in sid (but not experimental)
and encouraging people to test libc6/experimental might be a good way.
Do you know how soon upstream's planning to release 2.14?
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