5 Commits

Author	SHA1	Message	Date
Geliang Tang	f4fd706f73	selftests/bpf: Drop duplicate max/min definitions ... Drop duplicate macros min() and MAX() definitions in prog_tests and use MIN() or MAX() in sys/param.h instead. Signed-off-by: Geliang Tang <geliang.tang@suse.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/1ae276da9925c2de59b5bdc93b693b4c243e692e.1649462033.git.geliang.tang@suse.com	2022-04-11 17:18:09 +02:00
Andrii Nakryiko	6972dc3b87	selftests/bpf: Normalize selftest entry points ... Ensure that all test entry points are global void functions with no input arguments. Mark few subtest entry points as static. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20211022223228.99920-2-andrii@kernel.org	2021-10-25 14:45:45 -07:00
Kuniyuki Iwashima	ce547335d4	selftest/bpf: Extend the bpf_snprintf() test for "%c". ... This patch adds various "positive" patterns for "%c" and two "negative" patterns for wide character. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210814015718.42704-5-kuniyu@amazon.co.jp	2021-08-15 00:19:10 -07:00
Florent Revest	f80f88f0e2	selftests/bpf: Fix the snprintf test ... The BPF program for the snprintf selftest runs on all syscall entries. On busy multicore systems this can cause concurrency issues. For example it was observed that sometimes the userspace part of the test reads " 4 0000" instead of " 4 000" (extra '0' at the end) which seems to happen just before snprintf on another core sets end[-1] = '\0'. This patch adds a pid filter to the test to ensure that no bpf_snprintf() will write over the test's output buffers while the userspace reads the values. Fixes: c2e39c6bdc ("selftests/bpf: Add a series of tests for bpf_snprintf") Reported-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210428152501.1024509-1-revest@chromium.org	2021-04-30 10:36:59 -07:00
Florent Revest	c2e39c6bdc	selftests/bpf: Add a series of tests for bpf_snprintf ... The "positive" part tests all format specifiers when things go well. The "negative" part makes sure that incorrect format strings fail at load time. Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210419155243.1632274-7-revest@chromium.org	2021-04-19 15:27:37 -07:00