bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-04 06:22:40 -04:00
Code Issues Packages Projects Releases Wiki Activity

selftests/bpf: Improve test coverage for kfunc call

Browse Source 
On powerpc, immediate load instructions are sign extended. In case
of unsigned types, arguments should be explicitly zero-extended by
the caller. For kfunc call, this needs to be handled in the JIT code.
In bpf_kfunc_call_test4(), that tests for sign-extension of signed
argument types in kfunc calls, add some additional failure checks.
And add bpf_kfunc_call_test5() to test zero-extension of unsigned
argument types in kfunc calls.

Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20260312080113.843408-1-hbathini@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Hari Bathini
2026-03-12 13:31:13 +05:30
committed by Alexei Starovoitov
parent ca0f39a369
commit 2af3aa702c
4 changed files with 154 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
tools/testing/selftests/bpf/test_kmods/bpf_testmod_kfunc.h
View File

@@ -110,6 +110,7 @@ __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
int bpf_kfunc_call_test2(struct sock *sk, __u32 a, __u32 b) __ksym;
struct sock *bpf_kfunc_call_test3(struct sock *sk) __ksym;
long bpf_kfunc_call_test4(signed char a, short b, int c, long d) __ksym;
int bpf_kfunc_call_test5(__u8 a, __u16 b, __u32 c) __ksym;
void bpf_kfunc_call_test_pass_ctx(struct __sk_buff *skb) __ksym;
void bpf_kfunc_call_test_pass1(struct prog_test_pass1 *p) __ksym;