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From: "carlos_odonell at mentor dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sources.redhat.com
Subject: [Bug dynamic-link/14370] ld.so crashes on mismatched TLS/non-TLS symbols
Date: Tue, 04 Sep 2012 22:03:00 -0000 [thread overview]
Message-ID: <bug-14370-131-ydeNYcqKvy@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-14370-131@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=14370
--- Comment #18 from Carlos O'Donell <carlos_odonell at mentor dot com> 2012-09-04 22:03:15 UTC ---
(In reply to comment #17)
> Here are before and after timings of "make all" and "make check".
H.J., Thanks for working on this...
This looks like your patch *improved* performance, of which I'm skeptical
because it adds more instructions into the _dl_symbol_lookup_x hot path.
Are the build times from a cold reboot or after a "flush" to ensure the
previous build didn't change the numbers?
I don't like it that ld.so crashes, but I'm not sold that this is the best
solution, but it certainly makes the dynamic linker more rugged and perhaps
avoids what could possibly be used as an attack vector for a security breach.
Please post this to libc-alpha for wide review.
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next prev parent reply other threads:[~2012-09-04 22:03 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-18 10:05 [Bug dynamic-link/14370] New: SIGFPE in 'ldd -r' pluto at agmk dot net
2012-07-18 10:11 ` [Bug dynamic-link/14370] " aj at suse dot de
2012-07-18 10:49 ` pluto at agmk dot net
2012-07-18 10:54 ` jakub at redhat dot com
2012-07-18 11:00 ` pluto at agmk dot net
2012-07-18 12:37 ` pluto at agmk dot net
2012-07-24 2:04 ` carlos_odonell at mentor dot com
2012-07-24 6:14 ` pluto at agmk dot net
2012-09-02 20:00 ` hjl.tools at gmail dot com
2012-09-02 22:57 ` hjl.tools at gmail dot com
2012-09-03 2:54 ` bugdal at aerifal dot cx
2012-09-03 13:39 ` carlos_odonell at mentor dot com
2012-09-03 15:29 ` pluto at agmk dot net
2012-09-03 18:59 ` hjl.tools at gmail dot com
2012-09-03 20:07 ` aj at suse dot de
2012-09-04 19:09 ` [Bug dynamic-link/14370] ld.so crashes on mismatched TLS/non-TLS symbols hjl.tools at gmail dot com
2012-09-04 19:41 ` carlos_odonell at mentor dot com
2012-09-04 21:32 ` hjl.tools at gmail dot com
2012-09-04 22:03 ` carlos_odonell at mentor dot com [this message]
2012-09-04 22:15 ` bugdal at aerifal dot cx
2012-09-04 22:22 ` hjl.tools at gmail dot com
2012-09-04 23:26 ` bugdal at aerifal dot cx
2012-09-05 15:24 ` ppluzhnikov at google dot com
2012-09-05 15:30 ` hjl.tools at gmail dot com
2012-12-04 0:00 ` carlos at systemhalted dot org
2013-10-02 22:44 ` neleai at seznam dot cz
2014-06-17 18:59 ` fweimer at redhat dot com
2023-07-30 16:53 ` sam at gentoo dot org
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