From owner-dev-commits-src-main@freebsd.org Tue Sep 21 21:17:12 2021 Return-Path: Delivered-To: dev-commits-src-main@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5B8F967B7BB; Tue, 21 Sep 2021 21:17:12 +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 4HDZ4m26v8z4bDC; Tue, 21 Sep 2021 21:17:12 +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 2897532D6; Tue, 21 Sep 2021 21:17:12 +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 18LLHCNd041359; Tue, 21 Sep 2021 21:17:12 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 18LLHCVp041358; Tue, 21 Sep 2021 21:17:12 GMT (envelope-from git) Date: Tue, 21 Sep 2021 21:17:12 GMT Message-Id: <202109212117.18LLHCVp041358@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Konstantin Belousov Subject: git: c2ee4dfd0497 - main - ia32_get_fpcontext(): xfpusave can be legitimately NULL MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: c2ee4dfd04970f1597eea58bb30eb93e1ed5a491 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-main@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for the main branch of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Sep 2021 21:17:12 -0000 The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=c2ee4dfd04970f1597eea58bb30eb93e1ed5a491 commit c2ee4dfd04970f1597eea58bb30eb93e1ed5a491 Author: Konstantin Belousov AuthorDate: 2021-09-21 21:09:34 +0000 Commit: Konstantin Belousov CommitDate: 2021-09-21 21:17:06 +0000 ia32_get_fpcontext(): xfpusave can be legitimately NULL Reported by: cy Sponsored by: The FreeBSD Foundation MFC after: 1 week Fixes: bd9e0f5df681da8b5ef05 --- sys/amd64/ia32/ia32_signal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/amd64/ia32/ia32_signal.c b/sys/amd64/ia32/ia32_signal.c index 1ca19072a1dc..ab7100f5b9fb 100644 --- a/sys/amd64/ia32/ia32_signal.c +++ b/sys/amd64/ia32/ia32_signal.c @@ -99,6 +99,8 @@ ia32_get_fpcontext(struct thread *td, struct ia32_mcontext *mcp, bcopy(get_pcb_user_save_td(td), &mcp->mc_fpstate[0], sizeof(mcp->mc_fpstate)); mcp->mc_fpformat = fpuformat(); + if (xfpusave == NULL) + return; if (!use_xsave || cpu_max_ext_state_size <= sizeof(struct savefpu)) { *xfpusave_len = 0; *xfpusave = NULL;