On 9/9/20 11:01 AM, Greg Kroah-Hartman wrote: > On Wed, Sep 09, 2020 at 09:47:05AM -0700, Guenter Roeck wrote: >> On Tue, Sep 08, 2020 at 05:22:22PM +0200, Greg Kroah-Hartman wrote: >>> This is the start of the stable review cycle for the 5.8.8 release. >>> There are 186 patches in this series, all will be posted as a response >>> to this one. If anyone has any issues with these being applied, please >>> let me know. >>> >>> Responses should be made by Thu, 10 Sep 2020 15:21:57 +0000. >>> Anything received after that time might be too late. >>> >> >> Build results: >> total: 154 pass: 153 fail: 1 >> Failed builds: >> powerpc:allmodconfig >> Qemu test results: >> total: 430 pass: 430 fail: 0 >> >> The powerpc problem is the same as before: >> >> Inconsistent kallsyms data >> Try make KALLSYMS_EXTRA_PASS=1 as a workaround >> >> KALLSYMS_EXTRA_PASS=1 doesn't help. The problem is sporadic, elusive, and all >> but impossible to bisect. The same build passes on another system, for example, >> with a different load pattern. It may pass with -j30 and fail with -j40. >> The problem started at some point after v5.8, and got worse over time; by now >> it almost always happens. I'd be happy to debug if there is a means to do it, >> but I don't have an idea where to even start. I'd disable KALLSYMS in my >> test configurations, but the symbol is selected from various places and thus >> difficult to disable. So unless I stop building ppc:allmodconfig entirely >> we'll just have to live with the failure. > > Ah, I was worried when I saw your dashboard orange for this kernel. > > I guess the powerpc maintainers don't care? Sad :( > Not sure if the powerpc architecture is to blame. Bisect attempts end up all over the place, and don't typically include any powerpc changes. I have no idea how kallsyms is created, but my suspicion is that it is a generic problem and that powerpc just happens to hit it right now. I have added KALLSYMS_EXTRA_PASS=1 to several architecture builds over time, when they reported similar problems. Right now I set it for alpha, arm, and m68k. powerpc just happens to be the first architecture where it doesn't help. Guenter
