bpf: Move bpf map owner out of common struct

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[ Upstream commit fd1c98f0ef ]

Given this is only relevant for BPF tail call maps, it is adding up space
and penalizing other map types. We also need to extend this with further
objects to track / compare to. Therefore, lets move this out into a separate
structure and dynamically allocate it only for BPF tail call maps.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20250730234733.530041-2-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Stable-dep-of: abad3d0bad ("bpf: Fix oob access in cgroup local storage")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Daniel Borkmann 2025-07-31 01:47:31 +02:00 • committed by Greg Kroah-Hartman

parent 963e79f6bd

commit f13441c171

3 changed files with 49 additions and 35 deletions

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35

kernel/bpf/core.c

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13

kernel/bpf/syscall.c

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