Searched hist:de7b9927105bd2afe940c6ad22de6938edd8b1c1 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/tools/testing/selftests/bpf/prog_tests/ |
| H A D | lru_bug.c | de7b9927105bd2afe940c6ad22de6938edd8b1c1 Tue Aug 09 16:30:33 CDT 2022 Kumar Kartikeya Dwivedi <memxor@gmail.com> selftests/bpf: Add test for prealloc_lru_pop bug
Add a regression test to check against invalid check_and_init_map_value
call inside prealloc_lru_pop.
The kptr should not be reset to NULL once we set it after deleting the
map element. Hence, we trigger a program that updates the element
causing its reuse, and checks whether the unref kptr is reset or not.
If it is, prealloc_lru_pop does an incorrect check_and_init_map_value
call and the test fails.
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20220809213033.24147-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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| /openbmc/linux/tools/testing/selftests/bpf/progs/ |
| H A D | lru_bug.c | de7b9927105bd2afe940c6ad22de6938edd8b1c1 Tue Aug 09 16:30:33 CDT 2022 Kumar Kartikeya Dwivedi <memxor@gmail.com> selftests/bpf: Add test for prealloc_lru_pop bug
Add a regression test to check against invalid check_and_init_map_value
call inside prealloc_lru_pop.
The kptr should not be reset to NULL once we set it after deleting the
map element. Hence, we trigger a program that updates the element
causing its reuse, and checks whether the unref kptr is reset or not.
If it is, prealloc_lru_pop does an incorrect check_and_init_map_value
call and the test fails.
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20220809213033.24147-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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