linux-stable.git/tools/testing/selftests/bpf/progs/test_map_ops.c, branch linux-rolling-stable Linux kernel stable tree bpf/selftests: coverage for bpf_map_ops errors 2023-03-22T22:11:06+00:00 JP Kobryn inwardvessel@gmail.com 2023-03-22T19:47:53+00:00 830154cdc57971b06f81d4ffc39b868e3d7693de These tests expose the issue of being unable to properly check for errors returned from inlined bpf map helpers that make calls to the bpf_map_ops functions. At best, a check for zero or non-zero can be done but these tests show it is not possible to check for a negative value or for a specific error value. Signed-off-by: JP Kobryn <inwardvessel@gmail.com> Tested-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20230322194754.185781-2-inwardvessel@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
These tests expose the issue of being unable to properly check for errors
returned from inlined bpf map helpers that make calls to the bpf_map_ops
functions. At best, a check for zero or non-zero can be done but these
tests show it is not possible to check for a negative value or for a
specific error value.

Signed-off-by: JP Kobryn <inwardvessel@gmail.com>
Tested-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230322194754.185781-2-inwardvessel@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>