1 files changed, 5 insertions, 1 deletions
diff --git a/tools/guest-diag/phys_claim_cycle.sh b/tools/guest-diag/phys_claim_cycle.sh
index ec6e29f..40577f9 100755
--- a/tools/guest-diag/phys_claim_cycle.sh
+++ b/tools/guest-diag/phys_claim_cycle.sh
@@ -292,7 +292,11 @@ rail_count() {
 
 abort_signature() {
     grep -q -E "not ready .*after resume" "$1" 2>/dev/null && return 0
-    grep -q -E "board unresponsive|gsp-phys.*WARN|WARNING:.*gsp-phys" "$1" 2>/dev/null && return 0
+    # Exclude the benign TX-preflight status line: its parenthetical text
+    # "(WARNING: status TX header not linked)" otherwise matches "gsp-phys.*WARN"
+    # on every unlinked-header boot (known F3 false positive).
+    grep -v -F "status TX header not linked" "$1" 2>/dev/null | \
+        grep -q -E "board unresponsive|gsp-phys.*WARN|WARNING:.*gsp-phys" 2>/dev/null && return 0
     return 1
 }