diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/task_kfunc_success.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/task_kfunc_success.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/task_kfunc_success.c b/tools/testing/selftests/bpf/progs/task_kfunc_success.c index b09371bba204..70df695312dc 100644 --- a/tools/testing/selftests/bpf/progs/task_kfunc_success.c +++ b/tools/testing/selftests/bpf/progs/task_kfunc_success.c @@ -18,6 +18,13 @@ int err, pid; */ struct task_struct *bpf_task_acquire(struct task_struct *p) __ksym __weak; + +struct task_struct *bpf_task_acquire___one(struct task_struct *task) __ksym __weak; +/* The two-param bpf_task_acquire doesn't exist */ +struct task_struct *bpf_task_acquire___two(struct task_struct *p, void *ctx) __ksym __weak; +/* Incorrect type for first param */ +struct task_struct *bpf_task_acquire___three(void *ctx) __ksym __weak; + void invalid_kfunc(void) __ksym __weak; void bpf_testmod_test_mod_kfunc(int i) __ksym __weak; @@ -56,6 +63,50 @@ static int test_acquire_release(struct task_struct *task) } SEC("tp_btf/task_newtask") +int BPF_PROG(test_task_kfunc_flavor_relo, struct task_struct *task, u64 clone_flags) +{ + struct task_struct *acquired = NULL; + int fake_ctx = 42; + + if (bpf_ksym_exists(bpf_task_acquire___one)) { + acquired = bpf_task_acquire___one(task); + } else if (bpf_ksym_exists(bpf_task_acquire___two)) { + /* Here, bpf_object__resolve_ksym_func_btf_id's find_ksym_btf_id + * call will find vmlinux's bpf_task_acquire, but subsequent + * bpf_core_types_are_compat will fail + */ + acquired = bpf_task_acquire___two(task, &fake_ctx); + err = 3; + return 0; + } else if (bpf_ksym_exists(bpf_task_acquire___three)) { + /* bpf_core_types_are_compat will fail similarly to above case */ + acquired = bpf_task_acquire___three(&fake_ctx); + err = 4; + return 0; + } + + if (acquired) + bpf_task_release(acquired); + else + err = 5; + return 0; +} + +SEC("tp_btf/task_newtask") +int BPF_PROG(test_task_kfunc_flavor_relo_not_found, struct task_struct *task, u64 clone_flags) +{ + /* Neither symbol should successfully resolve. + * Success or failure of one ___flavor should not affect others + */ + if (bpf_ksym_exists(bpf_task_acquire___two)) + err = 1; + else if (bpf_ksym_exists(bpf_task_acquire___three)) + err = 2; + + return 0; +} + +SEC("tp_btf/task_newtask") int BPF_PROG(test_task_acquire_release_argument, struct task_struct *task, u64 clone_flags) { if (!is_test_kfunc_task()) |