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Message-ID: <20080122103708.GA21149@elte.hu> Date: Tue, 22 Jan 2008 11:37:08 +0100 From: Ingo Molnar <mingo@...e.hu> To: Nick Piggin <nickpiggin@...oo.com.au> Cc: Frederik Himpe <fhimpe@...enet.be>, linux-kernel@...r.kernel.org Subject: Re: 2.6.24 regression: pan hanging unkilleable and un-straceable * Nick Piggin <nickpiggin@...oo.com.au> wrote: > On Tuesday 22 January 2008 07:58, Frederik Himpe wrote: > > With Linux 2.6.24-rc8 I often have the problem that the pan usenet > > reader starts using 100% of CPU time after some time. When this happens, > > kill -9 does not work, and strace just hangs when trying to attach to > > the process. The same with gdb. ps shows the process as being in the R > > state. > > > > I pressed Ctrl-Alt-SysRq-T, and this was shown for pan: > > Jan 21 21:45:01 Anastacia kernel: pan R running task 0 > > Well I've twice tried to submit a patch to print stacks for running > tasks as well, but nobody seems interested. It would at least give a > chance to see something. i definitely remembering having done this myself a couple of times (it makes tons of sense to get _some_ info out of the system) but some problem in -mm kept reverting it. I dont remember the specifics ... it was some race. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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