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| author | Yureka Lilian <yuka@yuka.dev> | 2025-08-14 20:01:12 +0200 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2025-08-15 16:52:50 -0700 |
| commit | 6c6b4146deb12d20f42490d5013f2043df942161 (patch) | |
| tree | dfbe3fbe87b3552f4fe44675ee286a69bfc916ff /scripts/lib/kdoc/kdoc_re.py | |
| parent | abdaf49be5424db74e19d167c10d7dad79a0efc2 (diff) | |
libbpf: Fix reuse of DEVMAP
Previously, re-using pinned DEVMAP maps would always fail, because
get_map_info on a DEVMAP always returns flags with BPF_F_RDONLY_PROG set,
but BPF_F_RDONLY_PROG being set on a map during creation is invalid.
Thus, ignore the BPF_F_RDONLY_PROG flag in the flags returned from
get_map_info when checking for compatibility with an existing DEVMAP.
The same problem is handled in a third-party ebpf library:
- https://github.com/cilium/ebpf/issues/925
- https://github.com/cilium/ebpf/pull/930
Fixes: 0cdbb4b09a06 ("devmap: Allow map lookups from eBPF")
Signed-off-by: Yureka Lilian <yuka@yuka.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250814180113.1245565-3-yuka@yuka.dev
Diffstat (limited to 'scripts/lib/kdoc/kdoc_re.py')
0 files changed, 0 insertions, 0 deletions