kernel/0001-bpf-Add-tech-preview-taint-for-syscall.patch
Justin M. Forbes dc4f070792 kernel-5.8.0-0.rc1.1
* Sun Jun 14 2020 Justin M. Forbes <jforbes@fedoraproject.org> [5.8.0-0.rc1.1]
- Fedora config update for rc1 ("Justin M. Forbes")
Resolves: rhbz#

Signed-off-by: Justin M. Forbes <jforbes@fedoraproject.org>
2020-06-14 18:10:41 -05:00

54 lines
1.6 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Eugene Syromiatnikov <esyr@redhat.com>
Date: Thu, 14 Jun 2018 16:36:08 -0400
Subject: [PATCH] bpf: Add tech preview taint for syscall
Message-id: <394af3a9985d1ad9ea6741cb95ff145312d106b9.1528991396.git.esyr@redhat.com>
Patchwork-id: 8251
O-Subject: [kernel team] [RHEL8 PATCH v4 3/5] [bpf] bpf: Add tech preview taint for syscall
Bugzilla: 1559877
RH-Acked-by: Jiri Benc <jbenc@redhat.com>
RH-Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Adding tech preview taint for using the eBPF syscall.
Based on a RHEL 7 commit "bpf: Add tech preview taint for syscall" by
Jiri Olsa.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1559877
Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=16716594
Upstream Status: RHEL only
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
---
kernel/bpf/syscall.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 8f5546ec2d1f..772054412fab 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -4091,11 +4091,17 @@ static int bpf_iter_create(union bpf_attr *attr)
SYSCALL_DEFINE3(bpf, int, cmd, union bpf_attr __user *, uattr, unsigned int, size)
{
union bpf_attr attr;
+ static int marked;
int err;
if (sysctl_unprivileged_bpf_disabled && !bpf_capable())
return -EPERM;
+ if (!marked) {
+ mark_tech_preview("eBPF syscall", NULL);
+ marked = true;
+ }
+
err = bpf_check_uarg_tail_zero(uattr, sizeof(attr), size);
if (err)
return err;
--
2.26.2