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[30/31] BPF: [TEMPORARY] Nerf BTF scalar value check

Message ID 20221130082313.3241517-31-tj@kernel.org (mailing list archive)
State RFC
Delegated to: BPF
Headers show
Series [01/31] rhashtable: Allow rhashtable to be used from irq-safe contexts | expand

Checks

Context Check Description
bpf/vmtest-bpf-PR fail merge-conflict

Commit Message

Tejun Heo Nov. 30, 2022, 8:23 a.m. UTC 
THIS IS A TEMPORARY WORKAROUND. WILL BE DROPPED.

This is needed for scx_example_atropos for now. This won't be needed once we
have generic BPF bitmask / cpumask helpers.

NOT_SIGNED_OFF
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Dave Marchevsky <davemarchevsky@meta.com>
---
 kernel/bpf/btf.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 5579ff3a5b54..1dc5a6e5e530 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -6400,11 +6400,14 @@  static int btf_check_func_arg_match(struct bpf_verifier_env *env,
 						return ret;
 				}
 			}
-
+#warning "btf argument scalar test nerfed"
+			/*
 			if (reg->type == SCALAR_VALUE)
 				continue;
 			bpf_log(log, "R%d is not a scalar\n", regno);
 			return -EINVAL;
+			*/
+			continue;
 		}
 
 		if (!btf_type_is_ptr(t)) {