kernel.git/tools/testing/selftests/bpf/prog_tests/bad_struct_ops.c, branch masterHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=master2024-03-06T23:18:15Zselftests/bpf: Verify struct_ops autoload/autocreate sync2024-03-06T23:18:15ZEduard Zingerman2024-03-06T10:45:23Zurn:sha1:651d49f15b2a84b3bcfe950fa99c3672b9619dbd
Check that autocreate flags of struct_ops map cause autoload of
struct_ops corresponding programs:
- when struct_ops program is referenced only from a map for which
autocreate is set to false, that program should not be loaded;
- when struct_ops program with autoload == false is set to be used
from a map with autocreate == true using shadow var,
that program should be loaded;
- when struct_ops program is not referenced from any map object load
should fail.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240306104529.6453-10-eddyz87@gmail.com
selftests/bpf: Bad_struct_ops test2024-03-06T23:18:15ZEduard Zingerman2024-03-06T10:45:20Zurn:sha1:c1b93c07b3ac3204c6a42a7f7b6217e36f44df4f
When loading struct_ops programs kernel requires BTF id of the
struct_ops type and member index for attachment point inside that
type. This makes impossible to use same BPF program in several
struct_ops maps that have different struct_ops type.
Check if libbpf rejects such BPF objects files.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240306104529.6453-7-eddyz87@gmail.com