Index: sys/kern/subr_syscall.c
===================================================================
--- sys/kern/subr_syscall.c
+++ sys/kern/subr_syscall.c
@@ -261,10 +261,16 @@
 		 * the next stop is reported as a syscall exit by
 		 * linux_ptrace_status().
 		 */
-		if ((td->td_dbgflags & TDB_EXEC) != 0 &&
-		    SV_PROC_ABI(td->td_proc) == SV_ABI_LINUX) {
-			ptracestop(td, SIGTRAP, NULL);
-			td->td_dbgflags &= ~TDB_EXEC;
+		if (traced && (td->td_dbgflags & TDB_EXEC) != 0 &&
+		    SV_PROC_ABI(p) == SV_ABI_LINUX) {
+			PROC_LOCK(p->p_pptr);
+			if (SV_PROC_ABI(p->p_pptr) == SV_ABI_LINUX) {
+				PROC_UNLOCK(p->p_pptr);
+				ptracestop(td, SIGTRAP, NULL);
+				td->td_dbgflags &= ~TDB_EXEC;
+			} else {
+				PROC_UNLOCK(p->p_pptr);
+			}
 		}
 		/*
 		 * If tracing the execed process, trap to the debugger