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Subject[PATCH 2/2] perf/test: Fix perf test 89 on x86
Date
From: Thomas Richter <richter@de.ibm.com>

perf test '89: probe libc's inet_pton & backtrace it with ping'
fails on x86. Debugging revealed a changed stack trace for the
ping command using probes:

ping 35729 [002] 8006.365063: probe_libc:inet_pton: (3ff9603e7c0)
12be50 __GI___inet_pton+0x0 (/usr/lib64/libc.so.6)
4fca main+0x139b (/usr/bin/ping)

The line getaddrinfo.... in the call stack is gone.
It was introduced with glibc version 2.36.8 released
with Fedora 37.

Output before on x86
# ./perf test 89
89: probe libc's inet_pton & backtrace it with ping : FAILED!
#

Output after on x86:
# ./perf test 89
89: probe libc's inet_pton & backtrace it with ping : Ok
#

Signed-off-by: Thomas Richter <richter@de.ibm.com>
---
tools/perf/tests/shell/record+probe_libc_inet_pton.sh | 1 -
1 file changed, 1 deletion(-)

diff --git a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
index 0f01c62cbee9..51ae8b906055 100755
--- a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
+++ b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
@@ -50,7 +50,6 @@ trace_libc_inet_pton_backtrace() {
;;
*)
eventattr='max-stack=3'
- echo "getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc\)$" >> $expected
echo ".*(\+0x[[:xdigit:]]+|\[unknown\])[[:space:]]\(.*/bin/ping.*\)$" >> $expected
;;
esac
--
2.38.1
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