On Wed, Jul 10, 2013 at 11:30 AM, Enrico Scholz <enrico.sch...@sigma-chemnitz.de> wrote: > Bruce Ashfield <bruce.ashfield-re5jqeeqqe8avxtiumw...@public.gmane.org> > writes: > >>> Applying two upstream kernel commits >>> 455bd4c430b0c0a361f38e8658a0d6cb469942b5 (ARM: 7668/1: fix >>> memset-related crashes caused by recent GCC (4.7.2) optimizations) and >>> 418df63adac56841ef6b0f1fcf435bc64d4ed177 (ARM: 7670/1: fix the memset >>> fix) seem to fix the problem for me. >> >> Correct. Those are the same commits you'll see on linux-yocto-3.8, >> we've been soaking them for a while. I was waiting for LTSI and -stable >> to pick up the changes before updating linux-yocto-3.4, but that hasn't >> happened yet. >> >> If you are using linux-yocto-3.4 and can confirm that it boots for you >> with those patches, > > Sorry, I am using a more or less vanilla 3.4 kernel. Patches fix > the problem there (device boots) and (after knowing about them) the > problematic code is easy to spot:
No worries. I can spot the fix, since we already did this for the 3.8 kernel. I was just no where near my targets at the moment .. and if I had an independent report that things boot, I'd go ahead and push my 3.8 fixes (ported to 3.4) .. which I may do anyway, since I can drop them when they cycle through -stable and LTSI. Cheers, Bruce > > $ arm-linux-gnueabi-objdump -d mm/slub.o > > 000014c4 <init_object>: > ... > 14fc: e1a00001 mov r0, r1 > 1500: e3a0106b mov r1, #107 ; 0x6b > 1504: ebfffffe bl 0 <memset> > 1508: e1a03000 mov r3, r0 <<<<<<< > 150c: e5942010 ldr r2, [r4, #16] > 1510: e3e0105a mvn r1, #90 ; 0x5a > 1514: e0832002 add r2, r3, r2 > 1518: e5421001 strb r1, [r2, #-1] > > With unpatched memset, 'r0' points to end of buffer. > > > Enrico > _______________________________________________ > Openembedded-core mailing list > Openembedded-core@lists.openembedded.org > http://lists.openembedded.org/mailman/listinfo/openembedded-core -- "Thou shalt not follow the NULL pointer, for chaos and madness await thee at its end" _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
