netdev - [PATCH net-next] bpf: Need to call bpf_prog_uncharge_memlock from bpf_prog

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Date:	Wed, 14 Oct 2015 14:40:44 -0700
From:	Tom Herbert <tom@...bertland.com>
To:	<davem@...emloft.net>, <netdev@...r.kernel.org>, <ast@...mgrid.com>
CC:	<kernel-team@...com>
Subject: [PATCH net-next] 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: commit aaac3ba95e4c8b49 ("bpf: charge user for creation of BPF maps and programs")
Signed-off-by: Tom Herbert <tom@...bertland.com>
---
 kernel/bpf/syscall.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index f640e5f..687dd6c 100644
--- 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);
 	}
 }
-- 
2.4.6

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