Commits
Andrii Nakryiko committed 768e582a997
bpf: Fix cgroup ref leak in cgroup_bpf_inherit on out-of-memory commit 1d8006abaab4cb90f81add86e8d1bf9411add05a upstream. There is no compensating cgroup_bpf_put() for each ancestor cgroup in cgroup_bpf_inherit(). If compute_effective_progs returns error, those cgroups won't be freed ever. Fix it by putting them in cleanup code path. Fixes: e10360f815ca ("bpf: cgroup: prevent out-of-order release of cgroup bpf") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Roman Gushchin <guro@fb.com> Link: https://lore.kernel.org/bpf/20200309224017.1063297-1-andriin@fb.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>