diff options
| -rw-r--r-- | include/linux/filter.h | 5 | ||||
| -rw-r--r-- | kernel/bpf/core.c | 4 | ||||
| -rw-r--r-- | kernel/bpf/verifier.c | 8 |
3 files changed, 5 insertions, 12 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index 5a2800ec94ea..5090e940ba3e 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -842,15 +842,14 @@ bpf_ctx_narrow_access_offset(u32 off, u32 size, u32 size_default) #define bpf_classic_proglen(fprog) (fprog->len * sizeof(fprog->filter[0])) -static inline int __must_check bpf_prog_lock_ro(struct bpf_prog *fp) +static inline void bpf_prog_lock_ro(struct bpf_prog *fp) { #ifndef CONFIG_BPF_JIT_ALWAYS_ON if (!fp->jited) { set_vm_flush_reset_perms(fp); - return set_memory_ro((unsigned long)fp, fp->pages); + set_memory_ro((unsigned long)fp, fp->pages); } #endif - return 0; } static inline void bpf_jit_binary_lock_ro(struct bpf_binary_header *hdr) diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 77a9b12e00af..4124805ad7ba 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -2375,9 +2375,7 @@ struct bpf_prog *bpf_prog_select_runtime(struct bpf_prog *fp, int *err) } finalize: - *err = bpf_prog_lock_ro(fp); - if (*err) - return fp; + bpf_prog_lock_ro(fp); /* The tail call compatibility check can only be done at * this late stage as we need to determine, if we deal diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index aa546355918c..171045b6956d 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -18625,13 +18625,9 @@ static int jit_subprogs(struct bpf_verifier_env *env) * bpf_prog_load will add the kallsyms for the main program. */ for (i = 1; i < env->subprog_cnt; i++) { - err = bpf_prog_lock_ro(func[i]); - if (err) - goto out_free; - } - - for (i = 1; i < env->subprog_cnt; i++) + bpf_prog_lock_ro(func[i]); bpf_prog_kallsyms_add(func[i]); + } /* Last step: make now unused interpreter insns from main * prog consistent for later dump requests, so they can |