Messages in this thread Patch in this message | | | Date | Mon, 11 Feb 2008 23:10:34 +0100 | From | Ingo Molnar <> | Subject | Re: 2.6.24-git2: Oracle 11g VKTM process enters R state on startup and is unkillable [still broken in 2.6.25-rc1] |
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* Ingo Molnar <mingo@elte.hu> wrote:
> no, they were not lost, they just didnt pass QA here (they crashed on > a particularly hard to debug 8-way box i have) and Peter worked on > that queue of fixes up until today to get it really correct. Could you > check: > > git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched.git > > combo patch below as well - whichever you prefer. The shortlog can be > found below as well - but i dont yet consider this pullable, i'd like > it to see pass a full night of randconfig tests on my test-systems.
ok, we just found the reason for the 8-way crash, the delta fix from Peter is below if any of you have tried the previous combo patch. Updated sched.git as well, new HEAD is fec13e45305d69fd0bd23b30bd05a0a42cf341f8.
Ingo
Index: linux-2.6/kernel/sched.c =================================================================== --- linux-2.6.orig/kernel/sched.c +++ linux-2.6/kernel/sched.c @@ -219,6 +219,10 @@ static void start_rt_bandwidth(struct rt if (rt_b->rt_runtime == RUNTIME_INF) return; + if (hrtimer_active(&rt_b->rt_period_timer)) + return; + + spin_lock(&rt_b->rt_runtime_lock); for (;;) { if (hrtimer_active(&rt_b->rt_period_timer)) break; @@ -229,6 +233,7 @@ static void start_rt_bandwidth(struct rt rt_b->rt_period_timer.expires, HRTIMER_MODE_ABS); } + spin_unlock(&rt_b->rt_runtime_lock); } #ifdef CONFIG_RT_GROUP_SCHED
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