netdev - [PATCH bpf] selftests/bpf: fix attach

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Date:   Fri, 12 Jul 2019 15:41:42 +0200
From:   Ilya Leoshkevich <iii@...ux.ibm.com>
To:     bpf@...r.kernel.org, netdev@...r.kernel.org
Cc:     gor@...ux.ibm.com, heiko.carstens@...ibm.com,
        Ilya Leoshkevich <iii@...ux.ibm.com>
Subject: [PATCH bpf] selftests/bpf: fix attach_probe on s390

attach_probe test fails, because it cannot install a kprobe on a
non-existent sys_nanosleep symbol.

Use the correct symbol name for the nanosleep syscall on 64-bit s390.
Don't bother adding one for 31-bit mode, since tests are compiled only
in 64-bit mode.

Fixes: 1e8611bbdfc9 ("selftests/bpf: add kprobe/uprobe selftests")
Signed-off-by: Ilya Leoshkevich <iii@...ux.ibm.com>
Acked-by: Vasily Gorbik <gor@...ux.ibm.com>
---
 tools/testing/selftests/bpf/prog_tests/attach_probe.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/attach_probe.c b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
index a4686395522c..47af4afc5013 100644
--- a/tools/testing/selftests/bpf/prog_tests/attach_probe.c
+++ b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
@@ -23,6 +23,8 @@ ssize_t get_base_addr() {
 
 #ifdef __x86_64__
 #define SYS_KPROBE_NAME "__x64_sys_nanosleep"
+#elif defined(__s390x__)
+#define SYS_KPROBE_NAME "__s390x_sys_nanosleep"
 #else
 #define SYS_KPROBE_NAME "sys_nanosleep"
 #endif
-- 
2.21.0