[Bug 24193] ptrace protection in Ubuntu 10.10 breaks debuggers (affects winedbg, wow, ...)

wine-bugs at winehq.org wine-bugs at winehq.org
Mon Sep 13 10:10:52 CDT 2010


http://bugs.winehq.org/show_bug.cgi?id=24193

Kees Cook <kees at outflux.net> changed:

           What    |Removed                     |Added
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                 CC|                            |kees at outflux.net

--- Comment #6 from Kees Cook <kees at outflux.net> 2010-09-13 10:10:51 CDT ---
Ubuntu has added prctl(PR_SET_PTRACER, debugger_pid, 0, 0, 0); as the way to
declare PTRACE relationships for crash handlers (or wardens).  For an example,
see how kdelibs was patched:

http://launchpadlibrarian.net/51487035/kde4libs_4%3A4.4.90-0ubuntu2_4%3A4.4.90-0ubuntu3.diff.gz

It should be possible for a process to specify which process families are
allowed to PTRACE it.

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