Messages in this thread Patch in this message |  | | | Date | Mon, 6 Nov 2006 10:38:15 +0100 | | From | Ingo Molnar <> | | Subject | Re: realtime-preempt patch-2.6.18-rt7 oops |
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* Mike Galbraith <efault@gmx.de> wrote:
> I just reproduced it running glibc make check. I had just enabled > kprobes and recompiled with the stock SuSE-10.1 compiler while waiting > for you to send me your .config (nevermind that request) so I could > try to reproduce it here.
hm, so kprobe_flush_task() is likely PREEMPT_RT-unsafe.
could you try the patch below, does it help? (a quick review seems to suggest that all codepaths protected by kretprobe_lock are atomic)
Ingo
Index: linux/kernel/kprobes.c =================================================================== --- linux.orig/kernel/kprobes.c +++ linux/kernel/kprobes.c @@ -50,7 +50,7 @@ static struct hlist_head kretprobe_inst_ static atomic_t kprobe_count; DEFINE_MUTEX(kprobe_mutex); /* Protects kprobe_table */ -DEFINE_SPINLOCK(kretprobe_lock); /* Protects kretprobe_inst_table */ +DEFINE_RAW_SPINLOCK(kretprobe_lock); /* Protects kretprobe_inst_table */ static DEFINE_PER_CPU(struct kprobe *, kprobe_instance) = NULL; static struct notifier_block kprobe_page_fault_nb = { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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