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selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tc

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The current regex also matches symbols in modules, which makes the
test fail on s390 where name_show is present only once in the kernel,
but also multiple times in modules:

000001b1401cdc20 t name_show
000001b0c05e6c40 t name_show    [mdev]
000001b0c0495f30 t name_show    [i2c_core]

Fix this by changing the regular expression to only match the function
name.

Link: https://lore.kernel.org/all/20260909092954.2200558-1-svens@linux.ibm.com/

Fixes: 03b80ff802 ("selftests/ftrace: Add new test case which checks non unique symbol")
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
This commit is contained in:
Sven Schnelle 2026-09-09 11:29:53 +02:00 committed by Masami Hiramatsu (Google)
parent df2908090c
commit d22c3e0088
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc
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@ -6,7 +6,7 @@
SYMBOL='name_show'
# We skip this test on kernel where SYMBOL is unique or does not exist.
if [ "$(grep -c -E "[[:alnum:]]+ t ${SYMBOL}" /proc/kallsyms)" -le '1' ]; then
if [ "$(grep -c -E "[[:alnum:]]+ t ${SYMBOL}$" /proc/kallsyms)" -le '1' ]; then
exit_unsupported
fi