Messages in this thread | | | Subject | Re: [bug report][stable] perf probe: failed to add events | From | Adrian Hunter <> | Date | Mon, 25 Mar 2019 12:02:44 +0200 |
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On 21/03/19 12:10 PM, Greg KH wrote: > On Thu, Feb 28, 2019 at 09:19:08AM +0200, Adrian Hunter wrote: >> On 28/02/19 4:07 AM, Joseph Qi wrote: >>> Hi Adrian, >>> >>> On 19/2/27 20:39, Adrian Hunter wrote: >>>> Seems to be fixed by this: >>>> >>>> From: Adrian Hunter <adrian.hunter@intel.com> >>>> Date: Wed, 27 Feb 2019 05:35:25 +0200 >>>> Subject: [PATCH] perf probe: Fix getting the kernel map >>>> >>>> Since commit 4d99e4136580 ("perf machine: Workaround missing maps for x86 >>>> PTI entry trampolines"), perf tools has been creating more than one kernel >>>> map, however 'perf probe' assumed there could be only one. >>>> >>>> Fix by using machine__kernel_map() to get the main kernel map. >>>> >>>> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> >>>> Fixes: 4d99e4136580 ("perf machine: Workaround missing maps for x86 PTI entry trampolines") >>> >>> Below is my investigation result before, FYI. >>> the first bad commit (v4.18 ~ v4.19): >>> d83212d5dd67 kallsyms, x86: Export addresses of PTI entry trampolines >> >> Yes we should add a fixes tag for that also. > > So, what do I need to do here for the stable tree(s) to resolve this > issue?
Nothing.
Patch was re-sent with a stable tag so will go through like normal:
https://lore.kernel.org/lkml/2ed432de-e904-85d2-5c36-5897ddc5b23b@intel.com/
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