bpf: Need to call bpf_prog_uncharge_memlock from bpf_prog_put

Currently, is only called from __prog_put_rcu in the bpf_prog_release
path. Need this to call this from bpf_prog_put also to get correct
accounting.

Fixes: aaac3ba95e4c8b49 ("bpf: charge user for creation of BPF maps and programs")
Signed-off-by: Tom Herbert <tom@herbertland.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index f640e5f..687dd6c 100644 (file)
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -520,6 +520,7 @@ void bpf_prog_put(struct bpf_prog *prog)
 {
        if (atomic_dec_and_test(&prog->aux->refcnt)) {
                free_used_maps(prog->aux);
+               bpf_prog_uncharge_memlock(prog);
                bpf_prog_free(prog);
        }
 }