From: Alexey Budankov <alexey.budankov@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Ingo Molnar <mingo@redhat.com>,
"jani.nikula@linux.intel.com" <jani.nikula@linux.intel.com>,
"joonas.lahtinen@linux.intel.com"
<joonas.lahtinen@linux.intel.com>,
"rodrigo.vivi@intel.com" <rodrigo.vivi@intel.com>,
Alexei Starovoitov <ast@kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Serge Hallyn <serge@hallyn.com>, James Morris <jmorris@namei.org>,
Casey Schaufler <casey@schaufler-ca.com>
Cc: Jiri Olsa <jolsa@redhat.com>, Andi Kleen <ak@linux.intel.com>,
Stephane Eranian <eranian@google.com>,
Igor Lubashev <ilubashe@akamai.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Namhyung Kim <namhyung@kernel.org>,
Kees Cook <keescook@chromium.org>, Jann Horn <jannh@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
"linux-security-module@vger.kernel.org"
<linux-security-module@vger.kernel.org>,
"selinux@vger.kernel.org" <selinux@vger.kernel.org>,
linux-kernel@vger.kernel.org,
"linux-perf-users@vger.kernel.org"
<linux-perf-users@vger.kernel.org>,
intel-gfx@lists.freedesktop.org,
Brendan Gregg <bgregg@netflix.com>,
songliubraving@fb.com,
"bpf@vger.kernel.org" <bpf@vger.kernel.org>,
"linux-parisc@vger.kernel.org" <linux-parisc@vger.kernel.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: [PATCH v3 5/7] trace/bpf_trace: open access for CAP_SYS_PERFMON privileged process
Date: Mon, 16 Dec 2019 23:03:45 +0300 [thread overview]
Message-ID: <d94e5d0b-aa34-ad21-349f-fa3fd6862345@linux.intel.com> (raw)
In-Reply-To: <b175f283-d256-e37e-f447-6ba4ab4f3d3a@linux.intel.com>
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.budankov@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
next prev parent reply other threads:[~2019-12-16 20:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-16 19:52 [PATCH v3 0/7] Introduce CAP_SYS_PERFMON to secure system performance monitoring and observability Alexey Budankov
2019-12-16 19:58 ` [PATCH v3 1/7] capabilities: introduce CAP_SYS_PERFMON to kernel and user space Alexey Budankov
2019-12-17 15:02 ` Stephen Smalley
2019-12-16 19:59 ` [PATCH v3 2/7] perf/core: open access for CAP_SYS_PERFMON privileged process Alexey Budankov
2019-12-16 20:00 ` [PATCH v3 3/7] perf tool: extend Perf tool with CAP_SYS_PERFMON capability support Alexey Budankov
2019-12-16 20:03 ` [PATCH v3 4/7] drm/i915/perf: open access for CAP_SYS_PERFMON privileged process Alexey Budankov
2019-12-17 9:45 ` [Intel-gfx] " Lionel Landwerlin
2019-12-17 11:38 ` Alexey Budankov
2019-12-16 20:03 ` Alexey Budankov [this message]
2019-12-16 20:04 ` [PATCH v3 6/7] powerpc/perf: " Alexey Budankov
2019-12-16 20:05 ` [PATCH v3 7/7] parisc/perf: " Alexey Budankov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d94e5d0b-aa34-ad21-349f-fa3fd6862345@linux.intel.com \
--to=alexey.budankov@linux.intel.com \
--cc=acme@kernel.org \
--cc=ak@linux.intel.com \
--cc=alexander.shishkin@linux.intel.com \
--cc=ast@kernel.org \
--cc=benh@kernel.crashing.org \
--cc=bgregg@netflix.com \
--cc=bpf@vger.kernel.org \
--cc=casey@schaufler-ca.com \
--cc=eranian@google.com \
--cc=ilubashe@akamai.com \
--cc=intel-gfx@lists.freedesktop.org \
--cc=jani.nikula@linux.intel.com \
--cc=jannh@google.com \
--cc=jmorris@namei.org \
--cc=jolsa@redhat.com \
--cc=joonas.lahtinen@linux.intel.com \
--cc=keescook@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-parisc@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mingo@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=namhyung@kernel.org \
--cc=paulus@samba.org \
--cc=peterz@infradead.org \
--cc=rodrigo.vivi@intel.com \
--cc=selinux@vger.kernel.org \
--cc=serge@hallyn.com \
--cc=songliubraving@fb.com \
--cc=tglx@linutronix.de \
--cc=tvrtko.ursulin@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).