Open access to bpf_trace monitoring for CAP_SYS_PERFMON privileged
processes. For backward compatibility reasons access to bpf_trace
monitoring remains open for CAP_SYS_ADMIN privileged processes but
CAP_SYS_ADMIN usage for secure bpf_trace monitoring is discouraged
with respect to CAP_SYS_PERFMON capability.
Signed-off-by: Alexey Budankov <alexey.budan...@linux.intel.com>
---
kernel/trace/bpf_trace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 44bd08f2443b..bafe21ac6d92 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -1272,7 +1272,7 @@ int perf_event_query_prog_array(struct perf_event *event,
void __user *info)
u32 *ids, prog_cnt, ids_len;
int ret;
- if (!capable(CAP_SYS_ADMIN))
+ if (!perfmon_capable())
return -EPERM;
if (event->attr.type != PERF_TYPE_TRACEPOINT)
return -EINVAL;
--
2.20.1
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