Commit 6920b086 authored by Ludovic L'Hours's avatar Ludovic L'Hours Committed by Martin KaFai Lau
Browse files

libbpf: Fix map creation flags sanitization 



As BPF_F_MMAPABLE flag is now conditionnaly set (by map_is_mmapable),
it should not be toggled but disabled if not supported by kernel.

Fixes: 4fcac46c ("libbpf: only add BPF_F_MMAPABLE flag for data maps with global vars")
Signed-off-by: default avatarLudovic L'Hours <ludovic.lhours@gmail.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230108182018.24433-1-ludovic.lhours@gmail.com


Signed-off-by: default avatarMartin KaFai Lau <martin.lau@kernel.org>
parent 75514e4c

tools/lib/bpf/libbpf.c

+1 −1
Original line number Diff line number Diff line
@@ -7355,7 +7355,7 @@ static int bpf_object__sanitize_maps(struct bpf_object *obj) 
		if (!bpf_map__is_internal(m))

			continue;

		if (!kernel_supports(obj, FEAT_ARRAY_MMAP))

			m->def.map_flags ^= BPF_F_MMAPABLE;

			m->def.map_flags &= ~BPF_F_MMAPABLE;

	}



	return 0;