From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Mosberger Date: Wed, 16 May 2001 18:49:36 +0000 Subject: Re: [Linux-ia64] hanging process cannot be killed Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> On Wed, 16 May 2001 18:55:20 +0200 (MEST), Erich Focht said: Erich> Hello, how can it happen that a process isn't killable with Erich> kill -9 any more? Can happen easily if it's doing a non-interruptible sleep. Erich> I have encountered this a few times and from within kdb two Erich> processes seem to be in "run" state on the same CPU! The one Erich> marked as "current" shows the following traceback: Erich> __ia64_save_fpu+0x20 schedule+0xa40 invoke_schedule+0x20 Erich> ia64_leave_kernel+0x30 Erich> [snip...] Erich> I've seen this with 2.4.0 and 2.4.4 kernels, with B1 stepping Erich> CPUs. With 2.4.4 in single dispersal mode the problem doesn't Erich> seem to occur... I'd recommend to upgrade to B3 or C0. Earlier steppings had some issues. Most of them can be worked around, but it's not very pretty and I'd not recommend spending a lot of time on it. --david