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| author | Peter Zijlstra <peterz@infradead.org> | 2023-12-15 12:12:22 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-12-16 03:25:55 +0300 |
| commit | e4c00339891c074c76f626ac82981963cbba5332 (patch) | |
| tree | 4f2231383a2360a9fa0d7e8841343c8c69e2b164 /net/bpf | |
| parent | e9d13b9d2f99ccf7afeab490d97eaa5ac9846598 (diff) | |
| download | linux-e4c00339891c074c76f626ac82981963cbba5332.tar.xz | |
bpf: Fix dtor CFI
Ensure the various dtor functions match their prototype and retain
their CFI signatures, since they don't have their address taken, they
are prone to not getting CFI, making them impossible to call
indirectly.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231215092707.799451071@infradead.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net/bpf')
| -rw-r--r-- | net/bpf/test_run.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 711cf5d59816..dfd919374017 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -600,10 +600,21 @@ __bpf_kfunc void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) refcount_dec(&p->cnt); } +__bpf_kfunc void bpf_kfunc_call_test_release_dtor(void *p) +{ + bpf_kfunc_call_test_release(p); +} +CFI_NOSEAL(bpf_kfunc_call_test_release_dtor); + __bpf_kfunc void bpf_kfunc_call_memb_release(struct prog_test_member *p) { } +__bpf_kfunc void bpf_kfunc_call_memb_release_dtor(void *p) +{ +} +CFI_NOSEAL(bpf_kfunc_call_memb_release_dtor); + __bpf_kfunc_end_defs(); BTF_SET8_START(bpf_test_modify_return_ids) @@ -1671,9 +1682,9 @@ static const struct btf_kfunc_id_set bpf_prog_test_kfunc_set = { BTF_ID_LIST(bpf_prog_test_dtor_kfunc_ids) BTF_ID(struct, prog_test_ref_kfunc) -BTF_ID(func, bpf_kfunc_call_test_release) +BTF_ID(func, bpf_kfunc_call_test_release_dtor) BTF_ID(struct, prog_test_member) -BTF_ID(func, bpf_kfunc_call_memb_release) +BTF_ID(func, bpf_kfunc_call_memb_release_dtor) static int __init bpf_prog_test_run_init(void) { |