Hi Xiaolong,
On 07/04/2018 12:27 PM, kernel test robot wrote:
>
> FYI, we noticed the following commit (built with gcc-7):
>
> commit: 32a4debc7c89ee5e29c0bbdfdd3ae0ce0e01057f ("[PATCH] perf tests: Fix
> regex for record+probe_libc_inet_pton.sh")
> url:
> https://github.com/0day-ci/linux/commits/Sandipan-Das/perf-tests-Fix-regex-for-record-probe_libc_inet_pton-sh/20180521-130408
>
>
> in testcase: perf-sanity-tests
> with following parameters:
>
> perf_compiler: gcc
>
>
>
> on test machine: qemu-system-x86_64 -enable-kvm -cpu kvm64,+ssse3 -smp 2 -m 8G
>
> caused below changes (please refer to attached dmesg/kmsg for entire
> log/backtrace):
>
>
> 2018-05-22 17:41:14 sudo
> /usr/src/linux-perf-x86_64-fedora-25-32a4debc7c89ee5e29c0bbdfdd3ae0ce0e01057f/tools/perf/perf
> test 62
> 62: probe libc's inet_pton & backtrace it with ping : FAILED!
>
>
This patch has the following dependencies which seem to be missing from your
source tree.
7903a7086723 ("perf script: Show symbol offsets by default")
19610184693c ("perf script: Show virtual addresses instead of offsets")
Output without these patches:
62: probe libc's inet_pton & backtrace it with ping :
--- start ---
test child forked, pid 10323
ping 10340 [001] 888647.764907: probe_libc:inet_pton: (7fe66cbc2220)
132220 __GI___inet_pton (/usr/lib64/libc-2.25.so)
FAIL: expected backtrace entry 1
".*inet_pton\+0x[[:xdigit:]]+[[:space:]]\(/usr/lib64/libc-2.25.so|inlined\)$"
got "132220 __GI___inet_pton (/usr/lib64/libc-2.25.so)"
test child finished with -1
---- end ----
probe libc's inet_pton & backtrace it with ping: FAILED!
Output with these patches:
62: probe libc's inet_pton & backtrace it with ping :
--- start ---
test child forked, pid 13155
ping 13172 [000] 888783.582767: probe_libc:inet_pton: (7f2afe5ce220)
7f2afe5ce220 __GI___inet_pton+0x0 (/usr/lib64/libc-2.25.so)
7f2afe593ebd getaddrinfo+0x11d (/usr/lib64/libc-2.25.so)
55b725fd8c71 main+0x891 (/usr/bin/ping)
test child finished with 0
---- end ----
probe libc's inet_pton & backtrace it with ping: Ok
--
With Regards,
Sandipan
