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bpf: Fix helper bpf_map_peek_elem_proto pointing to wrong callback 

commit 301a33d51880619d0c5a581b5a48d3a5248fa84b upstream.

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 84430d4232 ("bpf, verifier: avoid
retpoline for map push/pop/peek operation").

Fixes: f1a2e44a3a ("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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mircea Cirjaliu 2021-01-19 21:53:18 +01:00 committed by Greg Kroah-Hartman
parent 79ce12cfa5
commit bd4793843c
1 changed files with 1 additions and 1 deletions
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2
kernel/bpf/helpers.c
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@ -105,7 +105,7 @@ BPF_CALL_2(bpf_map_peek_elem, struct bpf_map *, map, void *, value)
}
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,