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[Bug dynamic-link/20480] Patch: ifunc not executable, crashes sudo qemu
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Thu, 18 Aug 2016 08:29:02 +0000
- Subject: [Bug dynamic-link/20480] Patch: ifunc not executable, crashes sudo qemu
- Auto-submitted: auto-generated
- References: <bug-20480-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20480
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2016-08-18
CC| |fweimer at redhat dot com
Component|libc |dynamic-link
Ever confirmed|0 |1
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
We need a full reproducer. This could well be a compiler or binutils bug. Can
you provide more information, please? “eu-readelf -l -S” could be helpful,
combined with the call stack and disassembly of the affected functions.
The patch looks wrong. Some systems disallow PROT_WRITE|PROT_EXEC as a matter
of policy.
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