Re: perf test BPF failing on 4.15.0-rc6

Em Thu, Jan 04, 2018 at 09:37:35AM +0800, Wangnan (F) escreveu: > > > On 2018/1/4 4:13, Arnaldo Carvalho de Melo wrote: > > Em Wed, Jan 03, 2018 at 03:33:07PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Em Wed, Jan 03, 2018 at 03:27:01PM -0300, Arnaldo Carvalho de Melo > > > escreveu: > > >

Re: perf test BPF failing on 4.15.0-rc6

Em Thu, Jan 04, 2018 at 09:37:35AM +0800, Wangnan (F) escreveu: > > > On 2018/1/4 4:13, Arnaldo Carvalho de Melo wrote: > > Em Wed, Jan 03, 2018 at 03:33:07PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Em Wed, Jan 03, 2018 at 03:27:01PM -0300, Arnaldo Carvalho de Melo > > > escreveu: > > >

Re: perf test BPF failing on 4.15.0-rc6

On 2018/1/4 4:13, Arnaldo Carvalho de Melo wrote: Em Wed, Jan 03, 2018 at 03:33:07PM -0300, Arnaldo Carvalho de Melo escreveu: Em Wed, Jan 03, 2018 at 03:27:01PM -0300, Arnaldo Carvalho de Melo escreveu: Continuing investigation... After applying the fallback patch to allow new tools to

Re: perf test BPF failing on 4.15.0-rc6

On 2018/1/4 4:13, Arnaldo Carvalho de Melo wrote: Em Wed, Jan 03, 2018 at 03:33:07PM -0300, Arnaldo Carvalho de Melo escreveu: Em Wed, Jan 03, 2018 at 03:27:01PM -0300, Arnaldo Carvalho de Melo escreveu: Continuing investigation... After applying the fallback patch to allow new tools to

Re: perf test BPF failing on 4.15.0-rc6

Em Wed, Jan 03, 2018 at 03:33:07PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Wed, Jan 03, 2018 at 03:27:01PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Continuing investigation... > > > > After applying the fallback patch to allow new tools to work with older > > kernels: > > > >

Re: perf test BPF failing on 4.15.0-rc6

Em Wed, Jan 03, 2018 at 03:33:07PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Wed, Jan 03, 2018 at 03:27:01PM -0300, Arnaldo Carvalho de Melo escreveu: > > > Continuing investigation... > > > > After applying the fallback patch to allow new tools to work with older > > kernels: > > > >

Re: perf test BPF failing on 4.15.0-rc6

Em Wed, Jan 03, 2018 at 03:27:01PM -0300, Arnaldo Carvalho de Melo escreveu: > > Continuing investigation... > > After applying the fallback patch to allow new tools to work with older > kernels: > > [root@felicio ~]# perf test bpf > 39: BPF filter: >

Re: perf test BPF failing on 4.15.0-rc6

Em Wed, Jan 03, 2018 at 03:27:01PM -0300, Arnaldo Carvalho de Melo escreveu: > > Continuing investigation... > > After applying the fallback patch to allow new tools to work with older > kernels: > > [root@felicio ~]# perf test bpf > 39: BPF filter: >

Re: perf test BPF failing on 4.15.0-rc6

Em Wed, Jan 03, 2018 at 01:58:44PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Wed, Jan 03, 2018 at 12:58:26PM +0800, Wangnan (F) escreveu: > > And please check if the kprobe created by > > > > $ perf probe -v SyS_epoll_wait > > [root@seventh ~]# perf probe -v SyS_epoll_wait >

Re: perf test BPF failing on 4.15.0-rc6

Em Wed, Jan 03, 2018 at 01:58:44PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Wed, Jan 03, 2018 at 12:58:26PM +0800, Wangnan (F) escreveu: > > And please check if the kprobe created by > > > > $ perf probe -v SyS_epoll_wait > > [root@seventh ~]# perf probe -v SyS_epoll_wait >

Re: perf test BPF failing on 4.15.0-rc6

Em Wed, Jan 03, 2018 at 12:58:26PM +0800, Wangnan (F) escreveu: > And please check if the kprobe created by > > $ perf probe -v SyS_epoll_wait [root@seventh ~]# perf probe -v SyS_epoll_wait probe-definition(0): SyS_epoll_wait symbol:SyS_epoll_wait file:(null) line:0 offset:0 return:0

Re: perf test BPF failing on 4.15.0-rc6

Em Wed, Jan 03, 2018 at 12:58:26PM +0800, Wangnan (F) escreveu: > And please check if the kprobe created by > > $ perf probe -v SyS_epoll_wait [root@seventh ~]# perf probe -v SyS_epoll_wait probe-definition(0): SyS_epoll_wait symbol:SyS_epoll_wait file:(null) line:0 offset:0 return:0

Re: perf test BPF failing on 4.15.0-rc6

And please check if the kprobe created by $ perf probe -v SyS_epoll_wait works for the test program used by this testcase: #include #include #define NR_ITERS 100 static int epoll_wait_loop(void) { int i; /* Should fail NR_ITERS times */ for (i = 0; i < NR_ITERS;

Re: perf test BPF failing on 4.15.0-rc6

And please check if the kprobe created by $ perf probe -v SyS_epoll_wait works for the test program used by this testcase: #include #include #define NR_ITERS 100 static int epoll_wait_loop(void) { int i; /* Should fail NR_ITERS times */ for (i = 0; i < NR_ITERS;

Re: perf test BPF failing on 4.15.0-rc6

Unable to reproduce. In my kernel configuration, SyS_epoll_wait is not inlined at all. From the log you sent, it seems that all 3 instances are attached. This testcase should work if the last one (SyS_epoll_wait) get probed correctly. Could you please have a look if the 3rd kprobe event

Re: perf test BPF failing on 4.15.0-rc6

Unable to reproduce. In my kernel configuration, SyS_epoll_wait is not inlined at all. From the log you sent, it seems that all 3 instances are attached. This testcase should work if the last one (SyS_epoll_wait) get probed correctly. Could you please have a look if the 3rd kprobe event

perf test BPF failing on 4.15.0-rc6

Hi Wang, I just updated my machine to Fedora 27 and 4.15.0-rc6 and the only test failing for me is: [root@jouet linux]# perf test bpf 39: BPF filter: 39.1: Basic BPF filtering : FAILED! 39.2: BPF pinning

perf test BPF failing on 4.15.0-rc6

Hi Wang, I just updated my machine to Fedora 27 and 4.15.0-rc6 and the only test failing for me is: [root@jouet linux]# perf test bpf 39: BPF filter: 39.1: Basic BPF filtering : FAILED! 39.2: BPF pinning