linux/tools/testing
Andrii Nakryiko b955ceba2c selftests/bpf: fix test_spin_lock_fail.c's global vars usage
[ Upstream commit 1b2bfc2969 ]

Global variables of special types (like `struct bpf_spin_lock`) make
underlying ARRAY maps non-mmapable. To make this work with libbpf's
mmaping logic, application is expected to declare such special variables
as static, so libbpf doesn't even attempt to mmap() such ARRAYs.

test_spin_lock_fail.c didn't follow this rule, but given it relied on
this test to trigger failures, this went unnoticed, as we never got to
the step of mmap()'ing these ARRAY maps.

It is fragile and relies on specific sequence of libbpf steps, which are
an internal implementation details.

Fix the test by marking lockA and lockB as static.

Fixes: c48748aea4 ("selftests/bpf: Add failure test cases for spin lock pairing")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20241023043908.3834423-2-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-12-09 10:32:05 +01:00
..
crypto/chacha20-s390 tools/testing/crypto: Use vzalloc instead of vmalloc+memset 2022-07-05 14:46:36 +02:00
cxl cxl/port: Fix use-after-free, permit out-of-order decoder shutdown 2024-11-08 16:28:24 +01:00
fault-injection docs: fault-injection: convert docs to ReST and rename to *.rst 2019-06-14 14:21:07 -06:00
ktest ktest.pl: Avoid false positives with grub2 skip regex 2024-10-17 15:24:16 +02:00
kunit kunit: tool: fix parsing of test attributes 2024-02-05 20:14:15 +00:00
memblock memblock tests: fix warning ‘struct seq_file’ declared inside parameter list 2023-09-14 10:51:28 +03:00
nvdimm tools/testing/nvdimm: Drop empty platform remove function 2023-06-07 13:30:21 -07:00
radix-tree maple_tree: do not preallocate nodes for slot stores 2024-01-05 15:19:43 +01:00
scatterlist tools/testing/scatterlist: add missing defines 2022-01-30 09:56:58 +02:00
selftests selftests/bpf: fix test_spin_lock_fail.c's global vars usage 2024-12-09 10:32:05 +01:00
vsock vsock/test: fix SEQPACKET message bounds test 2023-12-03 07:33:05 +01:00