Messages in this thread | | | Subject | Re: UBSAN: Undefined behaviour in arch/x86/events/intel/p6.c:116:29 | From | Meelis Roos <> | Date | Wed, 4 Dec 2019 21:47:31 +0200 |
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04.12.19 17:06 Peter Zijlstra wrote: > On Wed, Dec 04, 2019 at 01:15:40PM +0100, Jiri Olsa wrote: >> On Tue, Dec 03, 2019 at 03:39:49PM +0200, Meelis Roos wrote: >>>> Does something like so fix it? >>> >>> Unfortunately not (tested on top of todays git): >> >> hi, >> which p6 model are you seeing this on? >> how do you trigger that? > > Triggers on any p6 model. I hacked up perf and used "qemu-system-x86_64 > -cpu pentium2". > > The below seems to cure things.
Yes, works for me on Pentium M. The UBSAN warning is gone and everything seems to work as before.
Thank you!
-- Meelis Roos <mroos@linux.ee>
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