[PATCH v4 5/9] trace/bpf_trace: open access for CAP_SYS_PERFMON privileged process
Alexey Budankov <[email protected]> Wed, 18 Dec 2019 12:28:10 +0300
| Newsgroups | gmane.comp.freedesktop.xorg.drivers.intel,gmane.linux.oprofile,gmane.linux.ports.arm.kernel,gmane.linux.ports.parisc,gmane.linux.kernel,gmane.linux.kernel.perf.user,gmane.linux.kernel.lsm,gmane.linux.ports.ppc64.devel |
|---|---|
| Organization | Intel Corp. |
| Message-ID | <[email protected]> |
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 <[email protected]> --- 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