Em Fri, May 18, 2018 at 12:54:17PM +0530, Sandipan Das escreveu:
> This test currently fails because the regular expressions for
> matching the output of perf script do not consider the symbol
> offsets to be part of the output.
>
> The symbol offsets are seen because of the default behaviour
> introduced by commit 4140d2ea74b3 ("perf script: Show symbol
> offsets by default").
>
> Before applying this patch:
>
> # perf test -v "probe libc's inet_pton & backtrace it with ping"
>
> 62: probe libc's inet_pton & backtrace it with ping :
> --- start ---
> test child forked, pid 30389
> ping 30406 [002] 307144.280983: probe_libc:inet_pton: (7f4117adf220)
> 7f4117adf220 __GI___inet_pton+0x0 (/usr/lib64/libc-2.25.so)
> FAIL: expected backtrace entry 1
> ".*inet_pton[[:space:]]\(/usr/lib64/libc-2.25.so|inlined\)$" got
> "7f4117adf220 __GI___inet_pton+0x0 (/usr/lib64/libc-2.25.so)"
> test child finished with -1
> ---- end ----
> probe libc's inet_pton & backtrace it with ping: FAILED!
>
> After applying this patch:
>
> # perf test -v "probe libc's inet_pton & backtrace it with ping"
>
> 62: probe libc's inet_pton & backtrace it with ping :
> --- start ---
> test child forked, pid 30539
> ping 30556 [003] 307254.313217: probe_libc:inet_pton: (7fe19ab10220)
> 7fe19ab10220 __GI___inet_pton+0x0 (/usr/lib64/libc-2.25.so)
> 7fe19aad5ebd getaddrinfo+0x11d (/usr/lib64/libc-2.25.so)
> 56351e3c1c71 main+0x891 (/usr/bin/ping)
> test child finished with 0
> ---- end ----
> probe libc's inet_pton & backtrace it with ping: Ok
Here it went from failing with:
[root@seventh ~]# perf test -v pton
64: probe libc's inet_pton & backtrace it with ping :
--- start ---
test child forked, pid 22590
ping 22607 [001] 12782.425689: probe_libc:inet_pton: (7f8686da4e40)
7f8686da4e40 __GI___inet_pton+0x0 (/usr/lib64/libc-2.26.so)
FAIL: expected backtrace entry 1
".*inet_pton[[:space:]]\(/usr/lib64/libc-2.26.so|inlined\)$" got "7f8686da4e40
__GI___inet_pton+0x0 (/usr/lib64/libc-2.26.so)"
test child finished with -1
---- end ----
probe libc's inet_pton & backtrace it with ping: FAILED!
[root@seventh ~]#
To failing with:
[root@seventh ~]# perf test -v pton
64: probe libc's inet_pton & backtrace it with ping :
--- start ---
test child forked, pid 28954
ping 28971 [002] 14277.711200: probe_libc:inet_pton: (7fc9d66e3e40)
7fc9d66e3e40 __GI___inet_pton+0x0 (/usr/lib64/libc-2.26.so)
7fc9d66b02b4 getaddrinfo+0x124 (/usr/lib64/libc-2.26.so)
56075cb98f40 [unknown] (/usr/bin/ping)
FAIL: expected backtrace entry 3
".*\+0x[[:xdigit:]]+[[:space:]]\(.*/bin/ping.*\)$" got "56075cb98f40 [unknown]
(/usr/bin/ping)"
test child finished with -1
---- end ----
probe libc's inet_pton & backtrace it with ping: FAILED!
[root@seventh ~]#
Trying to figure this out...
- Arnaldo
