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Diffstat (limited to 'kernel/bpf/core.c')
-rw-r--r--kernel/bpf/core.c30
1 files changed, 1 insertions, 29 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index a9e6c04d0f4a..1e5625d46414 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -598,8 +598,6 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
bpf_fill_ill_insns(hdr, size);
hdr->pages = size / PAGE_SIZE;
- hdr->locked = 0;
-
hole = min_t(unsigned int, size - (proglen + sizeof(*hdr)),
PAGE_SIZE - sizeof(*hdr));
start = (get_random_int() % hole) & ~(alignment - 1);
@@ -1450,22 +1448,6 @@ static int bpf_check_tail_call(const struct bpf_prog *fp)
return 0;
}
-static int bpf_prog_check_pages_ro_locked(const struct bpf_prog *fp)
-{
-#ifdef CONFIG_ARCH_HAS_SET_MEMORY
- int i, err;
-
- for (i = 0; i < fp->aux->func_cnt; i++) {
- err = bpf_prog_check_pages_ro_single(fp->aux->func[i]);
- if (err)
- return err;
- }
-
- return bpf_prog_check_pages_ro_single(fp);
-#endif
- return 0;
-}
-
static void bpf_prog_select_func(struct bpf_prog *fp)
{
#ifndef CONFIG_BPF_JIT_ALWAYS_ON
@@ -1524,17 +1506,7 @@ finalize:
* all eBPF JITs might immediately support all features.
*/
*err = bpf_check_tail_call(fp);
- if (*err)
- return fp;
-
- /* Checkpoint: at this point onwards any cBPF -> eBPF or
- * native eBPF program is read-only. If we failed to change
- * the page attributes (e.g. allocation failure from
- * splitting large pages), then reject the whole program
- * in order to guarantee not ending up with any W+X pages
- * from BPF side in kernel.
- */
- *err = bpf_prog_check_pages_ro_locked(fp);
+
return fp;
}
EXPORT_SYMBOL_GPL(bpf_prog_select_runtime);