linux-kernelorg-stable/tools/lib
hupu a5edf3550f perf subcmd: avoid crash in exclude_cmds when excludes is empty
When cross-compiling the perf tool for ARM64, `perf help` may crash
with the following assertion failure:

  help.c:122: exclude_cmds: Assertion `cmds->names[ci] == NULL' failed.

This happens when the perf binary is not named exactly "perf" or when
multiple "perf-*" binaries exist in the same directory. In such cases,
the `excludes` command list can be empty, which leads to the final
assertion in exclude_cmds() being triggered.

Add a simple guard at the beginning of exclude_cmds() to return early
if excludes->cnt is zero, preventing the crash.

Signed-off-by: hupu <hupu.gm@gmail.com>
Reported-by: Guilherme Amadio <amadio@gentoo.org>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20250909094953.106706-1-amadio@gentoo.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-09-12 17:51:35 -07:00
..
api
bpf libbpf: Add the ability to suppress perf event enablement 2025-08-07 09:01:41 -07:00
perf perf parse-events: Support user CPUs mixed with threads/processes 2025-07-24 13:41:35 -07:00
subcmd perf subcmd: avoid crash in exclude_cmds when excludes is empty 2025-09-12 17:51:35 -07:00
symbol
thermal
argv_split.c
bitmap.c
cmdline.c
ctype.c
find_bit.c
hweight.c
list_sort.c
rbtree.c
slab.c
str_error_r.c
string.c
vsprintf.c
zalloc.c