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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1444858844-883196-1-git-send-email-tom@herbertland.com>
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

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html