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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-24 15:21:10 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-24 15:21:10 +0200 |
| commit | 85fb1a27b128f6404cb9a08f3a4a094e92a78ac0 (patch) | |
| tree | 85b23c9ace88f2a72665dd0c72768fd0a4c3e4ca /kernel/bpf/helpers.c | |
| parent | e4788edc730a0d2b26e1ae1f08fbb3f635b92dbb (diff) | |
| parent | e22ce8eb631bdc47a4a4ea7ecf4e4ba499db4f93 (diff) | |
Merge 5.14-rc7 into usb-next
We need the USB fix in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/bpf/helpers.c')
| -rw-r--r-- | kernel/bpf/helpers.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index 7a97b2f4747d..55f83ea09dae 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -353,9 +353,15 @@ const struct bpf_func_proto bpf_jiffies64_proto = { #ifdef CONFIG_CGROUPS BPF_CALL_0(bpf_get_current_cgroup_id) { - struct cgroup *cgrp = task_dfl_cgroup(current); + struct cgroup *cgrp; + u64 cgrp_id; - return cgroup_id(cgrp); + rcu_read_lock(); + cgrp = task_dfl_cgroup(current); + cgrp_id = cgroup_id(cgrp); + rcu_read_unlock(); + + return cgrp_id; } const struct bpf_func_proto bpf_get_current_cgroup_id_proto = { @@ -366,13 +372,17 @@ const struct bpf_func_proto bpf_get_current_cgroup_id_proto = { BPF_CALL_1(bpf_get_current_ancestor_cgroup_id, int, ancestor_level) { - struct cgroup *cgrp = task_dfl_cgroup(current); + struct cgroup *cgrp; struct cgroup *ancestor; + u64 cgrp_id; + rcu_read_lock(); + cgrp = task_dfl_cgroup(current); ancestor = cgroup_ancestor(cgrp, ancestor_level); - if (!ancestor) - return 0; - return cgroup_id(ancestor); + cgrp_id = ancestor ? cgroup_id(ancestor) : 0; + rcu_read_unlock(); + + return cgrp_id; } const struct bpf_func_proto bpf_get_current_ancestor_cgroup_id_proto = { |