On 07/26/2018 09:14 PM, Arnaldo Carvalho de Melo wrote: > Em Thu, Jul 26, 2018 at 03:58:05PM -0300, Arnaldo Carvalho de Melo escreveu: >> Em Thu, Jul 26, 2018 at 11:04:08PM +0530, Sandipan Das escreveu: >>> I came across the same problem. Does the following patch fix it? > >>> https://lkml.org/lkml/2018/7/26/669 > >> Oh my, that one was subtle... Checking... > > Right, when it said it was running: > > 40.3: BPF prologue generation > > In fact it was running: > > 40.4: BPF relocation checker > > That error message in the 'perf test -v' output: > > libbpf: Program 'func=sys_write' contains non-map related relo data > pointing to section 65522 > > Was the _expected_ one for "40.4: BPF relocation checker", then it > failed when it couldn't run the off by one "last" subtest, duh. > > Thomas, this was a problem introduced by a patch from you, just for > reference, this one: > > Fixes: 9ef0112442bd ("perf test: Fix subtest number when showing results") > > I should have caught this by running 'perf test' before/after applying > that patch, I'll now make sure this is done before sending pull reqs > upstream. > > In fact I did after, and thought, hey, some BPF related regression, I > must've updated clang/llvm and something new appeared on the radar, so I > went that direction and went nowhere, well, now I have an uptodate > llvm/clang combo to play with BTF, pahole, etc 8-) > > Thanks! > > - Arnaldo
Sandipan, thanks for fixing what I have messed up. Arnaldo, sorry for the hickup, I should have caught this too. In fact I ran perf test before and after, but redirected the output and just looked at the grep'ed lines on the screen.... I should be looked more carefully... Apologies for the mess and thanks again for fixing this. -- Thomas Richter, Dept 3303, IBM s390 Linux Development, Boeblingen, Germany -- Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294
