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authorMartin KaFai Lau <[email protected]>2020-10-19 12:42:25 -0700
committerAlexei Starovoitov <[email protected]>2020-10-19 15:57:42 -0700
commit8568c3cefd5143fa0dc09f90e1bc9dc8905292f4 (patch)
tree90ff2079a7ea6260ffe6399e1d00f457cabea8cf /tools/perf/scripts/python/syscall-counts.py
parente710bcc6d92c47bb7d8e803b41ef529c09ad6a9e (diff)
bpf: selftest: Ensure the return value of the bpf_per_cpu_ptr() must be checked
This patch tests all pointers returned by bpf_per_cpu_ptr() must be tested for NULL first before it can be accessed. This patch adds a subtest "null_check", so it moves the ".data..percpu" existence check to the very beginning and before doing any subtest. Signed-off-by: Martin KaFai Lau <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
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