[02:24] <vibhav> good motning
[02:41] <vibhav> morning, even
[08:34] <twpoland> hello
[18:29] <ositake> hi, I just found a problem in Ubuntu 12.04 and I don't know if it can be consider as a bug
[18:29] <ositake> the problems is that if you issue strace -ttt -f -p [pid from the xorg]
[18:29] <ositake> (don't try
[18:30] <ositake> it freezes the complete Ubuntu
[18:30] <ositake> meaning, you need to hard reset to work
[18:30] <ositake> but if I do the same from the any console
[18:30] <ositake> like ctrl+alt+F1
[18:30] <ositake> works smooth
[18:31] <geofft> that's disallowed by default because of the ptrace_scope stuff, right?
[18:31] <ositake> that's what I don't know
[18:31] <ositake> I guess that it is kind of stupid to strace the xorg
[18:31] <ositake> when you are in
[18:32] <ositake> but in a way, you should be able to do it
[18:32] <ositake> still I can't say
[18:32] <geofft> that too, I'd call that expected behavior. :-)
[18:32] <ogra_> well, if you call it like above you will output to the xterm you run in ... meaning you strace your own command as well ... sounds like a deadly loop you force there
[18:32] <ositake> indeed
[18:32] <geofft> I bet if you write a shell script to strace xorg with output to a file, and then kill the strace process after 30 seconds
[18:32] <ogra_> try redirecting to a file instead of oututting directly
[18:32] <geofft> it won't actually hang the system
[18:32] <ogra_> *outputting
[18:32] <ositake> good idea
[18:33] <ogra_> (since you would be stracing the strace output ... )
[18:35] <ositake> I know is something that a normal user would not do
[18:35] <ositake> that's why I wanted to ask before submitting any bug on that topoc
[18:35] <ositake> topic
[18:39] <ositake> thanks for the tip, by forwarding to a file, it doesn't happen,
[18:39] <geofft> I vaguely recall that tcpdump or tshark or something is clever enough to notice if you're over ssh
[18:40] <geofft> and not try to dump its own output
[18:40] <geofft> I wonder if it's worth doing the same thing for strace
[18:40] <geofft> but I can't really figure out how.
[18:40] <ositake> that could be a good idea
[18:40] <infinity> It's not worth trying to save people from applying that gun to that foot, I don't think.
[18:41] <infinity> "Infinite loops make computers appear frozen" isn't really a bug, unless it's a loop you reach in normal use.
[18:41] <ositake> true infinity , that's why I wanted to ask before hand
[18:41] <infinity> This is all reminiscint of how, every few years, someone freaks out because you can DoS a UNIX system by forkbombing.  Oooo.
[18:42] <infinity> The answer, of course, being twofold: "don't do that then" and "limit processes for non-root, if you care".
[18:42] <geofft> I thought that's no longer a problem with cgroups or something. :)
[18:42] <BenC> infinity: Can I get some buildd love for linux-ppc?
[18:42] <infinity> And in the ptrace case, we don't let regular users ptrace, and we really don't let them ptrace root-owned Xorg servers.
[18:42] <infinity> BenC: Maaaaybe.
[18:43] <infinity> BenC: adare and ross are manual, go nuts.
[18:43] <BenC> Thanks
[18:43] <geofft> I'm reminded of http://blog.michaeltang.me/yes-yes-no/
[18:44] <ositake> need to leave, thanks for the clarification!
[18:44] <ositake> cheers
[18:44] <geofft> (and in particular how _two_ different users on a shared system I run decided it sounded like a good idea to run)
[18:47] <BenC> Now I just need some distro-manager love
[18:57] <infinity> BenC: Release, you mean?  I can do that. :P
[18:58] <BenC> infinity: ah, the email says "distro manager approval"…I wasn't sure who to blame^Wask
[18:58] <infinity> BenC: There really was no ABI bump for PPC in that rebase?
[18:58] <infinity> That seems suspicious.
[19:03]  * ScottK hands infinity a neck tie, since he's distro manager, he should dress the part.
[19:04] <infinity> ScottK: Not gonna happen.
[19:04] <infinity> BenC: *poke*
[19:04] <ScottK> ;-)
[19:04] <infinity> BenC: Are you sure the rebase to 3.8.4 didn't bump ABI?  You don't have the abi check disabled?
[20:27] <BenC> infinity: I ran the build and no ABI bumps for me
[20:28] <BenC> infinity: debian.ppc/rules.d/powerpc.mk:skipabi = false