Messages in this thread | | | Date | Fri, 25 Sep 2020 17:12:45 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: [stable 4.19] [PANIC]: tracing: Centralize preemptirq tracepoints and unify their usage |
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On Fri, Sep 25, 2020 at 11:07:06AM -0400, Steven Rostedt wrote: > On Fri, 25 Sep 2020 10:59:14 -0400 > Steven Rostedt <rostedt@goodmis.org> wrote: > > > On Fri, 25 Sep 2020 10:54:58 -0400 > > Steven Rostedt <rostedt@goodmis.org> wrote: > > > > > > > The crash looks like its cr3 related, which I believe Peter Zijlstra > > > > s/cr3/cr2/ > > > > Specifically, commits: > > a0d14b8909de55139b8702fe0c7e80b69763dcfb ("x86/mm, tracing: Fix CR2 corruption") > 6879298bd0673840cadd1fb36d7225485504ceb4 ("x86/entry/64: Prevent clobbering of saved CR2 value") > b8f70953c1251d8b16276995816a95639f598e70 ("x86/entry/32: Pass cr2 to do_async_page_fault()") > > (which are in 5.4 but not 4.19) > > But again, is this too intrusive. There was a workaround that was > original proposed, but Peter didn't want any more band-aids, and did > the restructuring, but as you can see from the two other patches, it > makes it a bit more high risk.
If those are known to work, why can't I take them as-is?
thanks,
greg k-h
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