From: Yucong Sun Date: Wed, 6 Oct 2021 18:56:17 +0000 (-0700) Subject: selftests/bpf: Fix pid check in fexit_sleep test X-Git-Tag: v6.6.17~8953^2~2^2~62^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5db02dd7f09fdc32fa3866386784d383aca191d8;p=platform%2Fkernel%2Flinux-rpi.git selftests/bpf: Fix pid check in fexit_sleep test bpf_get_current_pid_tgid() returns u64, whose upper 32 bits are the same as userspace getpid() return value. Signed-off-by: Yucong Sun Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20211006185619.364369-13-fallentree@fb.com --- diff --git a/tools/testing/selftests/bpf/progs/fexit_sleep.c b/tools/testing/selftests/bpf/progs/fexit_sleep.c index 03a672d..bca92c9 100644 --- a/tools/testing/selftests/bpf/progs/fexit_sleep.c +++ b/tools/testing/selftests/bpf/progs/fexit_sleep.c @@ -13,7 +13,7 @@ int fexit_cnt = 0; SEC("fentry/__x64_sys_nanosleep") int BPF_PROG(nanosleep_fentry, const struct pt_regs *regs) { - if ((int)bpf_get_current_pid_tgid() != pid) + if (bpf_get_current_pid_tgid() >> 32 != pid) return 0; fentry_cnt++; @@ -23,7 +23,7 @@ int BPF_PROG(nanosleep_fentry, const struct pt_regs *regs) SEC("fexit/__x64_sys_nanosleep") int BPF_PROG(nanosleep_fexit, const struct pt_regs *regs, int ret) { - if ((int)bpf_get_current_pid_tgid() != pid) + if (bpf_get_current_pid_tgid() >> 32 != pid) return 0; fexit_cnt++;