From: Mircea Cirjaliu <mcirjaliu@bitdefender.com>
Date: Tue, 19 Jan 2021 21:53:18 +0100
Subject: bpf: Fix helper bpf_map_peek_elem_proto pointing to wrong callback
Patch-mainline: v5.11-rc5
Git-commit: 301a33d51880619d0c5a581b5a48d3a5248fa84b
References: bsc#1155518

I assume this was obtained by copy/paste. Point it to bpf_map_peek_elem()
instead of bpf_map_pop_elem(). In practice it may have been less likely
hit when under JIT given shielded via 84430d4232c3 ("bpf, verifier: avoid
retpoline for map push/pop/peek operation").

Fixes: f1a2e44a3aec ("bpf: add queue and stack maps")
Signed-off-by: Mircea Cirjaliu <mcirjaliu@bitdefender.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Mauricio Vasquez <mauriciovasquezbernal@gmail.com>
Link: https://lore.kernel.org/bpf/AM7PR02MB6082663DFDCCE8DA7A6DD6B1BBA30@AM7PR02MB6082.eurprd02.prod.outlook.com
Acked-by: Gary Lin <glin@suse.com>
---
 kernel/bpf/helpers.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -105,7 +105,7 @@ BPF_CALL_2(bpf_map_peek_elem, struct bpf
 }
 
 const struct bpf_func_proto bpf_map_peek_elem_proto = {
-	.func		= bpf_map_pop_elem,
+	.func		= bpf_map_peek_elem,
 	.gpl_only	= false,
 	.ret_type	= RET_INTEGER,
 	.arg1_type	= ARG_CONST_MAP_PTR,