linux-kernel - Re: [PATCH] tracing: Fix missing errno when zero parser->idx in trace_pid

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Message-ID: <20250905150312.02bef848@gandalf.local.home>
Date: Fri, 5 Sep 2025 15:03:12 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: kernel test robot <oliver.sang@...el.com>
Cc: Pu Lehui <pulehui@...weicloud.com>, <oe-lkp@...ts.linux.dev>,
 <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
 <linux-trace-kernel@...r.kernel.org>, <mhiramat@...nel.org>,
 <mathieu.desnoyers@...icios.com>, <pulehui@...wei.com>
Subject: Re: [PATCH] tracing: Fix missing errno when zero parser->idx in
 trace_pid_write

On Tue, 2 Sep 2025 23:09:53 +0800
kernel test robot <oliver.sang@...el.com> wrote:

> commit: cebdd2c9a622becc41349f32ace1795d750beda8 ("[PATCH] tracing: Fix missing errno when zero parser->idx in trace_pid_write")
> url: https://github.com/intel-lab-lkp/linux/commits/Pu-Lehui/tracing-Fix-missing-errno-when-zero-parser-idx-in-trace_pid_write/20250821-151736
> base: https://git.kernel.org/cgit/linux/kernel/git/trace/linux-trace for-next
> patch link: https://lore.kernel.org/all/20250821071721.3609109-1-pulehui@huaweicloud.com/
> patch subject: [PATCH] tracing: Fix missing errno when zero parser->idx in trace_pid_write
> 
> in testcase: perf-sanity-tests
> version: 
> with following parameters:
> 
> 	perf_compiler: gcc
> 	group: group-01

This is why I hate LKP. It's huge, complex, and I never can get it working.

I did the following:

 # lkp split-job jobs/perf-sanity-tests.yaml
 # lkp install -f ./perf-sanity-tests-defaults.yaml

[ had to fix python up a little because it wanted python3.9 where I had 3.13 ]

 # lkp run ./perf-sanity-tests-defaults.yaml
/work/git/lkp-tests.git/programs/perf-sanity-tests/run: 7: .: cannot open /work/git/lkp-tests.git/lib/tests/perf_test.sh: No such file
kill 37975 vmstat --timestamp -n 10 
kill 37973 dmesg --follow --decode 
wait for background processes: 37978 meminfo


I have no idea where this "perf_test.sh" is supposed to come from, and why
it doesn't exist :-p


-- Steve