diff options
| author | Song Liu <song@kernel.org> | 2022-09-26 21:47:39 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-09-27 06:40:43 +0300 |
| commit | 5b0d1c7bd5722467960829af51d523f5a6ffd848 (patch) | |
| tree | 0967cb40ef2d0af8f6beab452a0ed72cb0640c52 /include/linux/bpf.h | |
| parent | 19c02415da2345d0dda2b5c4495bc17cc14b18b5 (diff) | |
| download | linux-5b0d1c7bd5722467960829af51d523f5a6ffd848.tar.xz | |
bpf: Enforce W^X for bpf trampoline
Mark the trampoline as RO+X after arch_prepare_bpf_trampoline, so that
the trampoine follows W^X rule strictly. This will turn off warnings like
CPA refuse W^X violation: 8000000000000163 -> 0000000000000163 range: ...
Also remove bpf_jit_alloc_exec_page(), since it is not used any more.
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20220926184739.3512547-3-song@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 9ae155c75014..5161fac0513f 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -1008,7 +1008,6 @@ int arch_prepare_bpf_dispatcher(void *image, void *buf, s64 *funcs, int num_func void bpf_dispatcher_change_prog(struct bpf_dispatcher *d, struct bpf_prog *from, struct bpf_prog *to); /* Called only from JIT-enabled code, so there's no need for stubs. */ -void *bpf_jit_alloc_exec_page(void); void bpf_image_ksym_add(void *data, struct bpf_ksym *ksym); void bpf_image_ksym_del(struct bpf_ksym *ksym); void bpf_ksym_add(struct bpf_ksym *ksym); |