kernel/linux.git/tools/testing/selftests/bpf/test_loader.c, branch v7.1-rc5

selftests/bpf: inline TEST_TAG constants in test_loader.c

2026-04-11T14:17:06+00:00

After str_has_pfx() refactoring each TEST_TAG_* / TEST_BTF_PATH constant is used exactly once. Since constant definitions are not shared between BPF-side bpf_misc.h and userspace side test_loader.c, there is no need in the additional redirection layer. Acked-by: Ihor Solodrai Reviewed-by: Puranjay Mohan Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260410-selftests-global-tags-ordering-v2-4-c566ec9781bf@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: impose global ordering for test decl_tags

2026-04-11T14:17:06+00:00

Impose global ordering for all decl tags used by test_loader.c based tests (__success, __failure, __msg, etc): - change every tag to expand as __attribute__((btf_decl_tag("comment:" XSTR(__COUNTER__) ...))) - change parse_test_spec() to collect all decl tags before processing and sort them using strverscmp(). The ordering is necessary for gcc-bpf. Neither GCC nor the C standard defines the order in which function attributes are consumed. While Clang tends to preserve definition order, GCC may process them out of sequence. This inconsistency causes BPF tests with multiple __msg entries to fail when compiled with GCC. Signed-off-by: Cupertino Miranda Reviewed-by: Puranjay Mohan Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260410-selftests-global-tags-ordering-v2-3-c566ec9781bf@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: make str_has_pfx return pointer past the prefix

2026-04-11T14:17:06+00:00

Change str_has_pfx() to return a pointer to the first character after the prefix, thus eliminating the repetitive (s + sizeof(PFX) - 1) patterns. Acked-by: Ihor Solodrai Acked-by: Mykyta Yatsenko Reviewed-by: Puranjay Mohan Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260410-selftests-global-tags-ordering-v2-2-c566ec9781bf@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Allow prog name matching for tests with __description

2026-04-07T19:24:29+00:00

For tests that carry a __description tag, allow matching on both the description string and program name for convenience. Before this commit, the description string must be spelt out to filter the tests. Suggested-by: Alexei Starovoitov Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260407145606.3991770-1-memxor@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Support non-linear flag in test loader

2025-10-10T17:43:04+00:00

This patch adds support for a new tag __linear_size in the test loader, to specify the size of the linear area in case of non-linear skbs. If the tag is absent or null, a linear skb is crafted. Signed-off-by: Paul Chaignon Signed-off-by: Martin KaFai Lau Link: https://patch.msgid.link/7ad928ec7591daef4f1b84032aeb86c918b3e5a7.1760037899.git.paul.chaignon@gmail.com

selftests/bpf: __not_msg() tag for test_loader framework

2025-09-19T16:27:23+00:00

This patch adds tags __not_msg() and __not_msg_unpriv(). Test fails if is found in verifier log. If __msg_not() is situated between __msg() tags framework matches __msg() tags first, and then checks that is not present in a portion of a log between bracketing __msg() tags. __msg_not() tags bracketed by a same __msg() group are effectively unordered. The idea is borrowed from LLVM's CheckFile with its CHECK-NOT syntax. Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20250918-callchain-sensitive-liveness-v3-11-c3cd27bacc60@gmail.com Signed-off-by: Alexei Starovoitov

selftests: bpf: introduce stderr and stdout

2025-09-11T20:00:44+00:00

Add __stderr and __stdout to validate the output of BPF streams for bpf selftests. Similar to __xlated, __jited, etc., __stderr/out can be used in the BPF progs to compare a string (regex supported) to the output in the bpf streams. Signed-off-by: Puranjay Mohan Acked-by: Eduard Zingerman Link: https://lore.kernel.org/r/20250911145808.58042-5-puranjay@kernel.org Signed-off-by: Alexei Starovoitov

selftests/bpf: Fix the issue where the error code is 0

2025-09-08T16:51:13+00:00

The error message printed here only uses the previous err value, which results in it being printed as 0. When bpf_map__attach_struct_ops encounters an error, it uses libbpf_err_ptr(err) to set errno = -err and returns NULL. Therefore, Using -errno can fix this issue. Fix before: run_subtest:FAIL:1019 bpf_map__attach_struct_ops failed for map pro_epilogue: err=0 Fix after: run_subtest:FAIL:1019 bpf_map__attach_struct_ops failed for map pro_epilogue: err=-9 Signed-off-by: Feng Yang Signed-off-by: Martin KaFai Lau Link: https://patch.msgid.link/20250908060810.1054341-1-yangfeng59949@163.com

selftests/bpf: Add __arch_s390x macro

2025-08-26T23:51:52+00:00

Make it possible to limit certain tests to s390x, just like it's already done for x86_64, arm64, and riscv64. Signed-off-by: Ilya Leoshkevich Link: https://lore.kernel.org/r/20250821113339.292434-4-iii@linux.ibm.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Add a missing newline to the "bad arch spec" message

2025-08-26T23:51:52+00:00

Fix error messages like this one: parse_test_spec:FAIL:569 bad arch spec: 's390x'process_subtest:FAIL:1153 Can't parse test spec for program 'may_goto_simple' Signed-off-by: Ilya Leoshkevich Link: https://lore.kernel.org/r/20250821113339.292434-3-iii@linux.ibm.com Signed-off-by: Alexei Starovoitov

kernel/linux.git/tools/testing/selftests/bpf/test_loader.c, branch v7.1-rc5

selftests/bpf: inline TEST_TAG constants in test_loader.c

selftests/bpf: impose global ordering for test decl_tags

selftests/bpf: make str_has_pfx return pointer past the prefix

selftests/bpf: Allow prog name matching for tests with __description

selftests/bpf: Support non-linear flag in test loader

selftests/bpf: __not_msg() tag for test_loader framework

selftests: bpf: introduce __stderr and __stdout

selftests/bpf: Fix the issue where the error code is 0

selftests/bpf: Add __arch_s390x macro

selftests/bpf: Add a missing newline to the "bad arch spec" message

selftests: bpf: introduce stderr and stdout