From: Michael Richardson <mcr+osw@sandelman.ca>
To: user-mode-linux-devel <user-mode-linux-devel@lists.sourceforge.net>
Subject: [uml-devel] UML vs ptrace_scope
Date: Fri, 17 May 2013 06:43:03 -0400 [thread overview]
Message-ID: <9106.1368787383@sandelman.ca> (raw)
I have been trying to bring the openswan nightly build system up again
on a newish system. I started these scripts back in 2002, and it has been running
on and off for many years, and many kernel revisions.
I started this most recent effort work when 3.5 was stable, so my guest
kernel is a 3.5 kernel running on a debian squeeze host with a 2.6.26
kernel. I compile things fine.
With 2.6.26, I got:
...
Checking that ptrace can change system call numbers...ptrace: Operation
not permitted
check_ptrace : expected SIGSTOP, got status = 9
I upgraded to wheezy (needed to be done anyway), and then felt that I
ran run into the ptrace_scope problem. At least, that's what I thought.
I installed a 3.8 debian kernel tree, patched it to enable YAMA, and
booted that finally. I set:
kernel.yama.ptrace_scope = 0
but this does not affect the above error. Is there something else I am
missing? I tried adding the capability, but it doesn't help.
curley-[~] mcr 10001 %sudo /sbin/setcap cap_sys_ptrace+ep
/btmp/build/HEAD/2013_05_12/openswan-2/UMLPOOL/plain26/linux
[sudo] password for mcr:
curley-[~] mcr 10002 %sudo /sbin/getcap
/btmp/build/HEAD/2013_05_12/openswan-2/UMLPOOL/plain26/linux
/btmp/build/HEAD/2013_05_12/openswan-2/UMLPOOL/plain26/linux =
cap_sys_ptrace+ep
No I suspect the problem is elsewhere.
Is there something else I am missing?
--
] Never tell me the odds! | ipv6 mesh networks [
] Michael Richardson, Sandelman Software Works | network architect [
] mcr@sandelman.ca http://www.sandelman.ca/ | ruby on rails [
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