D32726.1775844449.diff
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D32726.1775844449.diff
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	Index: sys/kern/subr_syscall.c
	===================================================================
	--- sys/kern/subr_syscall.c
	+++ sys/kern/subr_syscall.c
	@@ -260,9 +260,14 @@
	* the exec event now and then clear TDB_EXEC so that
	* the next stop is reported as a syscall exit by
	* linux_ptrace_status().
	+ *
	+ * We are accessing p->p_pptr without any additional
	+ * locks here: it cannot change while p is kept locked,
	+ * and a debugger process changing its ABI while tracing
	+ * another process seems highly unprobable.
	*/
	- if ((td->td_dbgflags & TDB_EXEC) != 0 &&
	- SV_PROC_ABI(td->td_proc) == SV_ABI_LINUX) {
	+ if (traced && (td->td_dbgflags & TDB_EXEC) != 0 &&
	+ SV_PROC_ABI(p->p_pptr) == SV_ABI_LINUX) {
	ptracestop(td, SIGTRAP, NULL);
	td->td_dbgflags &= ~TDB_EXEC;
	}