accounts/usbwallet: fix data race in self-derivation paths

accounts/usbwallet/wallet.go

@@ -338,14 +338,17 @@
 		}
 		// Device lock obtained, derive the next batch of accounts
 		var (
-			accs  []accounts.Account
-			paths []accounts.DerivationPath
-
-			nextPaths = append([]accounts.DerivationPath{}, w.deriveNextPaths...)
-			nextAddrs = append([]common.Address{}, w.deriveNextAddrs...)
-
+			accs    []accounts.Account
+			paths   []accounts.DerivationPath
 			context = context.Background()
+			nextAddrs = append([]common.Address{}, w.deriveNextAddrs...)
 		)
+		// Deep-copy derivation paths so updates inside this section don't mutate
+		// w.deriveNextPaths while we only hold stateLock.RLock.
+		nextPaths := make([]accounts.DerivationPath, len(w.deriveNextPaths))
+		for i, path := range w.deriveNextPaths {
+			nextPaths[i] = append(accounts.DerivationPath(nil), path...)
+		}
 		for i := 0; i < len(nextAddrs); i++ {
 			for empty := false; !empty; {
 				// Retrieve the next derived Ethereum account

beacon/params/config_test.go

@@ -15,9 +15,6 @@ ALTAIR_FORK_EPOCH: 1
 EIP7928_FORK_VERSION: 0xb0000038
 EIP7928_FORK_EPOCH: 18446744073709551615
 
-EIP7XXX_FORK_VERSION: 
-EIP7XXX_FORK_EPOCH: 
-
 BLOB_SCHEDULE: []
 `
 	c := &ChainConfig{}