From d22c3e0088e85be8131f7a9283f759cdbb20726d Mon Sep 17 00:00:00 2001 From: Sven Schnelle Date: Wed, 9 Sep 2026 11:29:53 +0200 Subject: selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tc 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: 03b80ff8023a ("selftests/ftrace: Add new test case which checks non unique symbol") Signed-off-by: Sven Schnelle Reviewed-by: Steven Rostedt Signed-off-by: Masami Hiramatsu (Google) --- arch/arm/tools/syscallnr.sh | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 arch/arm/tools/syscallnr.sh (limited to 'arch/arm/tools/syscallnr.sh') diff --git a/arch/arm/tools/syscallnr.sh b/arch/arm/tools/syscallnr.sh new file mode 100644 index 000000000..9e386770b --- /dev/null +++ b/arch/arm/tools/syscallnr.sh @@ -0,0 +1,33 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +in="$1" +out="$2" +align=1 + +fileguard=_ASM_ARM_`basename "$out" | sed \ + -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \ + -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'` + +grep -E "^[0-9A-Fa-fXx]+[[:space:]]+" "$in" | sort -n | tail -n1 | ( + echo "#ifndef ${fileguard} +#define ${fileguard} 1 + +/* + * This needs to be greater than __NR_last_syscall+1 in order to account + * for the padding in the syscall table. + */ +" + + while read nr abi name entry; do + nr=$(($nr + 1)) + while [ "$(($nr / (256 * $align) ))" -gt 0 ]; do + align=$(( $align * 4 )) + done + nr=$(( ($nr + $align - 1) & ~($align - 1) )) + echo "/* aligned to $align */" + echo "#define __NR_syscalls $nr" + done + + echo "" + echo "#endif /* ${fileguard} */" +) > "$out" -- cgit v1.3.1