From nobody Thu Oct 14 22:22:07 2021 X-Original-To: dev-commits-ports-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 0649C1802BAE; Thu, 14 Oct 2021 22:22:08 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HVkR36qZBz3Jvl; Thu, 14 Oct 2021 22:22:07 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id CA54E1B3B7; Thu, 14 Oct 2021 22:22:07 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 19EMM76f049989; Thu, 14 Oct 2021 22:22:07 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 19EMM71Q049988; Thu, 14 Oct 2021 22:22:07 GMT (envelope-from git) Date: Thu, 14 Oct 2021 22:22:07 GMT Message-Id: <202110142222.19EMM71Q049988@gitrepo.freebsd.org> To: ports-committers@FreeBSD.org, dev-commits-ports-all@FreeBSD.org, dev-commits-ports-main@FreeBSD.org From: John Baldwin Subject: git: 8ca1b9dc9369 - main - devel/gdb: Avoid a divide by zero in kgdb. List-Id: Commit messages for all branches of the ports repository List-Archive: https://lists.freebsd.org/archives/dev-commits-ports-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-ports-all@freebsd.org X-BeenThere: dev-commits-ports-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: jhb X-Git-Repository: ports X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 8ca1b9dc93695b2288f6b40d08c392b5a6dfbef2 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by jhb (doc, src committer): URL: https://cgit.FreeBSD.org/ports/commit/?id=8ca1b9dc93695b2288f6b40d08c392b5a6dfbef2 commit 8ca1b9dc93695b2288f6b40d08c392b5a6dfbef2 Author: John Baldwin AuthorDate: 2021-10-14 22:21:45 +0000 Commit: John Baldwin CommitDate: 2021-10-14 22:21:45 +0000 devel/gdb: Avoid a divide by zero in kgdb. Don't divide by zero if the message buffer size in a crashdump is zero. Reported by: glebius Reviewed by: pizzamig (maintainer), emaste Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D32486 --- devel/gdb/Makefile | 1 + devel/gdb/files/kgdb/fbsd-kvm.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/devel/gdb/Makefile b/devel/gdb/Makefile index 010dd16305bc..66abc21d8070 100644 --- a/devel/gdb/Makefile +++ b/devel/gdb/Makefile @@ -2,6 +2,7 @@ PORTNAME= gdb DISTVERSION= 11.1 +PORTREVISION= 1 CATEGORIES= devel MASTER_SITES= GNU diff --git a/devel/gdb/files/kgdb/fbsd-kvm.c b/devel/gdb/files/kgdb/fbsd-kvm.c index 4f11f641f78f..78fa9d331a5b 100644 --- a/devel/gdb/files/kgdb/fbsd-kvm.c +++ b/devel/gdb/files/kgdb/fbsd-kvm.c @@ -144,6 +144,8 @@ kgdb_dmesg(void) } catch (const gdb_exception_error &e) { return; } + if (size == 0) + return; rseq = MSGBUF_SEQ_TO_POS(size, rseq); wseq = MSGBUF_SEQ_TO_POS(size, wseq); if (rseq == wseq)