Messages in this thread | | | From | Linus Torvalds <> | Date | Fri, 23 Oct 2020 10:50:55 -0700 | Subject | Re: [LTP] mmstress[1309]: segfault at 7f3d71a36ee8 ip 00007f3d77132bdf sp 00007f3d71a36ee8 error 4 in libc-2.27.so[7f3d77058000+1aa000] |
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On Fri, Oct 23, 2020 at 10:00 AM Naresh Kamboju <naresh.kamboju@linaro.org> wrote: > > [Old patch from yesterday] > > After applying your patch on top on linux next tag 20201015 > there are two observations, > 1) i386 build failed. please find build error build
Yes, this was expected. That patch explicitly only works on x86-64, because 32-bit needs the double register handling for 64-bit values (mainly loff_t).
> 2) x86_64 kasan test PASS and the reported error not found.
Ok, good. That confirms that the problem you reported is indeed the register allocation.
The patch I sent an hour ago (the one based on Rasmus' one from yesterday) should fix things too, and - unlike yesterday's - work on 32-bit.
But I'll wait for confirmation (and hopefully a sign-off from Rasmus so that I can give him authorship) before actually committing it.
Linus
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