From owner-svn-src-stable-11@freebsd.org Mon Aug 7 17:30:23 2017 Return-Path: Delivered-To: svn-src-stable-11@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D6375DBCEDC; Mon, 7 Aug 2017 17:30:23 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A4D0876043; Mon, 7 Aug 2017 17:30:23 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v77HUMal005840; Mon, 7 Aug 2017 17:30:22 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v77HUMAq005839; Mon, 7 Aug 2017 17:30:22 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201708071730.v77HUMAq005839@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston Date: Mon, 7 Aug 2017 17:30:22 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r322176 - stable/11/sys/x86/x86 X-SVN-Group: stable-11 X-SVN-Commit-Author: markj X-SVN-Commit-Paths: stable/11/sys/x86/x86 X-SVN-Commit-Revision: 322176 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-11@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for only the 11-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Aug 2017 17:30:24 -0000 Author: markj Date: Mon Aug 7 17:30:22 2017 New Revision: 322176 URL: https://svnweb.freebsd.org/changeset/base/322176 Log: MFC r321803: Don't trace running threads that have interrupts disabled. Modified: stable/11/sys/x86/x86/stack_machdep.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/x86/x86/stack_machdep.c ============================================================================== --- stable/11/sys/x86/x86/stack_machdep.c Mon Aug 7 17:29:54 2017 (r322175) +++ stable/11/sys/x86/x86/stack_machdep.c Mon Aug 7 17:30:22 2017 (r322176) @@ -49,12 +49,14 @@ __FBSDID("$FreeBSD$"); #ifdef __i386__ #define PCB_FP(pcb) ((pcb)->pcb_ebp) +#define TF_FLAGS(tf) ((tf)->tf_eflags) #define TF_FP(tf) ((tf)->tf_ebp) #define TF_PC(tf) ((tf)->tf_eip) typedef struct i386_frame *x86_frame_t; #else #define PCB_FP(pcb) ((pcb)->pcb_rbp) +#define TF_FLAGS(tf) ((tf)->tf_rflags) #define TF_FP(tf) ((tf)->tf_rbp) #define TF_PC(tf) ((tf)->tf_rip) @@ -104,10 +106,10 @@ stack_nmi_handler(struct trapframe *tf) if (nmi_stack == NULL || curthread != nmi_pending) return (0); - if (INKERNEL(TF_PC(tf))) + if (INKERNEL(TF_PC(tf)) && (TF_FLAGS(tf) & PSL_I) != 0) stack_capture(curthread, nmi_stack, TF_FP(tf)); else - /* We interrupted a thread in user mode. */ + /* We were running in usermode or had interrupts disabled. */ nmi_stack->depth = 0; atomic_store_rel_ptr((long *)&nmi_pending, (long)NULL); @@ -155,7 +157,6 @@ stack_save_td_running(struct stack *st, struct thread mtx_unlock_spin(&nmi_lock); if (st->depth == 0) - /* We interrupted a thread in user mode. */ return (EAGAIN); #else /* !SMP */ KASSERT(0, ("curthread isn't running"));