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ANDROID: Revert "ANDROID: arm64: bpf: implement arch_bpf_jit_check_func"

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This reverts commit d9756ba082.

Reason for revert: fixes a conflict with upcoming upstream BPF changes.
Bug: 145210207
Change-Id: I0e7e76c117ab3608b6dd5a1bc6b949b9e109038f
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Sami Tolvanen 2020-01-29 17:32:58 -08:00
parent 5e34934ff0
commit 90e3e05ed8
1 changed files with 0 additions and 11 deletions
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11
arch/arm64/net/bpf_jit_comp.c
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@ -976,14 +976,3 @@ void bpf_jit_free_exec(void *addr)
{
return vfree(addr);
}
#ifdef CONFIG_CFI_CLANG
bool arch_bpf_jit_check_func(const struct bpf_prog *prog)
{
const uintptr_t func = (const uintptr_t)prog->bpf_func;
/* bpf_func must be correctly aligned and within the BPF JIT region */
return (func >= BPF_JIT_REGION_START && func < BPF_JIT_REGION_END &&
IS_ALIGNED(func, sizeof(u32)));
}
#endif