[PATCH linux-next 2/2] perf: Return EACCESS when need perfmon capability
From: Luo Gengkun <hidden>
Date: 2024-12-23 06:57:53
Also in:
linux-arm-kernel, linux-perf-users, linux-trace-kernel, lkml, selinux
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
For perf_allow_kernel and perf_allow_cpu, both return EACCES when require CAP_PERFMON or CAP_SYS_ADMIN permissions, so update perf_allow_tracepoint to keep them the same. Signed-off-by: Luo Gengkun <redacted> --- include/linux/perf_event.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 5d2ec4283ebf..c1bc0d7a275b 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h@@ -1685,7 +1685,7 @@ static inline int perf_allow_cpu(void) static inline int perf_allow_tracepoint(void) { if (sysctl_perf_event_paranoid > -1 && !perfmon_capable()) - return -EPERM; + return -EACCES; return security_perf_event_open(PERF_SECURITY_TRACEPOINT); }
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2.34.1