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linux/tools/testing/selftests/bpf/test_loader.c
Eduard Zingerman 34c513be3d selftests/bpf: __not_msg() tag for test_loader framework 
This patch adds tags __not_msg(<msg>) and __not_msg_unpriv(<msg>).
Test fails if <msg> is found in verifier log.

If __msg_not() is situated between __msg() tags framework matches
__msg() tags first, and then checks that <msg> 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 <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20250918-callchain-sensitive-liveness-v3-11-c3cd27bacc60@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-09-19 09:27:23 -07:00

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