| commit | 102acbacfd9a96d101abd96d1a7a5bf92b7c3e8e | [log] [tgz] |
|---|---|---|
| author | Kees Cook <keescook@chromium.org> | Tue Sep 28 16:09:46 2021 -0700 |
| committer | Alexei Starovoitov <ast@kernel.org> | Tue Sep 28 16:27:18 2021 -0700 |
| tree | 18cfa723e40dbe24928faf0299bf0b90e8df9f43 | |
| parent | 3d717fad5081b8e3bda76d86907fad95398cbde8 [diff] |
bpf: Replace callers of BPF_CAST_CALL with proper function typedef In order to keep ahead of cases in the kernel where Control Flow Integrity (CFI) may trip over function call casts, enabling -Wcast-function-type is helpful. To that end, BPF_CAST_CALL causes various warnings and is one of the last places in the kernel triggering this warning. For actual function calls, replace BPF_CAST_CALL() with a typedef, which captures the same details about the given function pointers. This change results in no object code difference. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://github.com/KSPP/linux/issues/20 Link: https://lore.kernel.org/lkml/CAEf4Bzb46=-J5Fxc3mMZ8JQPtK1uoE0q6+g6WPz53Cvx=CBEhw@mail.gmail.com Link: https://lore.kernel.org/bpf/20210928230946.4062144-3-keescook@chromium.org