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selftests/bpf: Fix pid check in fexit_sleep test
author
Yucong Sun
<sunyucong@gmail.com>
Wed, 6 Oct 2021 18:56:17 +0000
(11:56 -0700)
committer
Andrii Nakryiko
<andrii@kernel.org>
Fri, 8 Oct 2021 22:17:00 +0000
(15:17 -0700)
bpf_get_current_pid_tgid() returns u64, whose upper 32 bits are the same
as userspace getpid() return value.
Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link:
https://lore.kernel.org/bpf/20211006185619.364369-13-fallentree@fb.com
tools/testing/selftests/bpf/progs/fexit_sleep.c
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diff --git
a/tools/testing/selftests/bpf/progs/fexit_sleep.c
b/tools/testing/selftests/bpf/progs/fexit_sleep.c
index
03a672d
..
bca92c9
100644
(file)
--- 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++;