Messages in this thread | | | Date | Tue, 1 Mar 2016 13:25:46 -0500 | From | Steven Rostedt <> | Subject | Re: [PATCH RT 07/12] dump stack: dont disable preemption during trace |
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On Tue, 1 Mar 2016 09:45:05 -0500 Steven Rostedt <rostedt@goodmis.org> wrote:
> On Sat, 27 Feb 2016 11:32:06 +0100 > Sebastian Andrzej Siewior <sebastian@breakpoint.cc> wrote: > > > On 2016-02-26 16:32:42 [-0500], Steven Rostedt wrote: > > > 3.18.27-rt26-rc1 stable review patch. > > > If anyone has any objections, please let me know. > > > > Please merge this one along with "kernel: migrate_disable() do fastpath > > in atomic & irqs-off". Otherwise we might get recursive with lockdep and > > CPU-hotplug (if we go after hp->lock in pin_current_cpu()). > > Interesting. When I pulled this patch into 4.1-rt, it caused the system > to lock up. I'm looking into it now.
And that's because this commit also needs:
"kernel: softirq: unlock with irqs on"
And due to the WARN_ON_ONCE() issue (that I just posted a patch to fix mainline), it caused my system to reboot.
http://lkml.kernel.org/r/20160301110939.1b786f49@gandalf.local.home
-- Steve
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