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hupu 1773f674c4 perf subcmd: avoid crash in exclude_cmds when excludes is empty 
[ Upstream commit a5edf3550f ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-12 12:57:16 +02:00
..
accounting delayacct: track delays from IRQ/SOFTIRQ 2023-04-18 16:39:34 -07:00
arch objtool/LoongArch: Mark special atomic instruction as INSN_BUG type 2025-09-25 11:13:45 +02:00
bootconfig tools/bootconfig: Fix the wrong format specifier 2025-02-08 09:58:00 +01:00
bpf bpftool: Fix JSON writer resource leak in version command 2025-08-20 18:30:38 +02:00
build tools/build: Don't pass test log files to linker 2025-05-29 11:02:08 +02:00
certs tools/certs: Add print-cert-tbs-hash.sh 2022-05-23 18:47:49 +03:00
cgroup memcg_slabinfo: Fix use of PG_slab 2025-08-15 12:13:46 +02:00
counter tools/counter: Remove unneeded semicolon 2023-12-20 11:43:31 -05:00
crypto crypto: tools/ccp - Remove unused variable 2024-08-30 18:22:30 +08:00
debugging tools: Add new "test" taint to kernel-chktaint 2022-09-07 14:51:12 -06:00
firewire treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
firmware Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
gpio tools: gpio: remove the include directory on make clean 2025-09-09 18:58:25 +02:00
hv tools/hv: fcopy: Fix irregularities with size of ring buffer 2025-08-20 18:30:56 +02:00
iio tools: iio: rm .*.cmd when make clean 2024-09-05 19:27:13 +01:00
include tools/nolibc: fix spelling of FD_SETBITMASK in FD_* macros 2025-08-20 18:30:56 +02:00
kvm/kvm_stat tools/kvm_stat: use canonical ftrace path 2023-03-29 06:52:08 -04:00
laptop change email address for Pali Rohár 2020-04-10 15:36:22 -07:00
leds .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
lib perf subcmd: avoid crash in exclude_cmds when excludes is empty 2025-10-12 12:57:16 +02:00
memory-model tools/memory-model: simple.txt: Fix stale reference to recipes-pairs.txt 2024-09-13 23:56:44 -07:00
mm tools/mm: fix compile error 2024-11-14 22:43:48 -08:00
net tools: ynl-gen: validate 0 len strings from kernel 2025-05-29 11:03:12 +02:00
objtool objtool/LoongArch: Mark special atomic instruction as INSN_BUG type 2025-09-25 11:13:45 +02:00
pci tools: PCI: Remove unused BILLION macro 2024-09-13 22:37:06 +00:00
pcmcia .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
perf perf bpf-utils: Harden get_bpf_prog_info_linear 2025-09-09 18:58:25 +02:00
power cpupower: Fix a bug where the -t option of the set subcommand was not working. 2025-09-09 18:58:02 +02:00
rcu tools/rcu: Remove RCU Tasks Rude asynchronous APIs from rcu-updaters.sh 2024-07-29 07:39:32 +05:30
sched_ext tools/sched_ext: Add helper to check task migration state 2025-03-22 12:54:28 -07:00
scripts tools/build: Fix s390(x) cross-compilation with clang 2025-08-20 18:30:24 +02:00
sound ASoC: dapm-graph: set fill colour of turned on nodes 2025-03-22 12:54:20 -07:00
spi spi: spidev_fdx: Fix the wrong format specifier 2024-09-04 16:50:33 +01:00
testing selftests: fib_nexthops: Fix creation of non-FDB nexthops 2025-10-02 13:44:10 +02:00
thermal tools/thermal/tmon: Fix compilation warning for wrong format 2024-01-02 09:33:19 +01:00
time treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
tracing rtla: Check pkg-config install 2025-09-04 15:31:42 +02:00
usb usbip: tools: Fix detach_port() invalid port error path 2024-10-29 04:23:23 +01:00
verification tools/rv: Do not skip idle in trace 2025-08-15 12:13:46 +02:00
virtio Fix typo in vringh_test.c 2024-11-06 04:40:07 -05:00
wmi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
workqueue workqueue: remove unnecessary import and function in wq_monitor.py 2024-03-25 10:11:32 -10:00
writeback writeback: add wb_monitor.py script to monitor writeback info on bdi 2024-05-05 17:53:51 -07:00
Makefile sched_ext: Add scx_simple and scx_example_qmap example schedulers 2024-06-18 10:09:17 -10:00