linux/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 libapi: Add missing header with NAME_MAX define to io_dir.h 2025-03-13 00:29:36 -07:00
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 tools: Drop nonsensical -O6 2024-09-11 13:08:36 -03:00
thermal tools: Remove redundant quiet setup 2025-02-18 16:27:43 -03:00
argv_split.c
bitmap.c lib/interval_tree: add test case for interval_tree_iter_xxx() helpers 2025-03-17 12:17:00 -07:00
cmdline.c memblock test: fix implicit declaration of function 'memparse' 2024-08-06 08:21:25 +03:00
ctype.c
find_bit.c
hweight.c
list_sort.c tools/lib/list_sort: remove unnecessary header includes 2024-11-05 17:12:33 -08:00
rbtree.c tools lib rbtree: pick some improvements from the kernel rbtree code 2024-05-08 08:41:27 -07:00
slab.c lib/rbtree: enable userland test suite for rbtree related data structure 2025-03-17 12:17:00 -07:00
str_error_r.c
string.c perf annotate: Add disasm_line__parse() to parse raw instruction for powerpc 2024-07-31 16:12:59 -03:00
vsprintf.c
zalloc.c