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