From owner-svn-src-all@freebsd.org Sat Mar 2 04:02:12 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 29C0F150FE51; Sat, 2 Mar 2019 04:02:12 +0000 (UTC) (envelope-from bcran@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) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id BF88F73647; Sat, 2 Mar 2019 04:02:11 +0000 (UTC) (envelope-from bcran@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 mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id B21222723F; Sat, 2 Mar 2019 04:02:11 +0000 (UTC) (envelope-from bcran@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x2242Bdq083004; Sat, 2 Mar 2019 04:02:11 GMT (envelope-from bcran@FreeBSD.org) Received: (from bcran@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x2242B3V083002; Sat, 2 Mar 2019 04:02:11 GMT (envelope-from bcran@FreeBSD.org) Message-Id: <201903020402.x2242B3V083002@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: bcran set sender to bcran@FreeBSD.org using -f From: Rebecca Cran Date: Sat, 2 Mar 2019 04:02:11 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r344718 - in head/stand/efi/loader/arch: arm i386 X-SVN-Group: head X-SVN-Commit-Author: bcran X-SVN-Commit-Paths: in head/stand/efi/loader/arch: arm i386 X-SVN-Commit-Revision: 344718 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: BF88F73647 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.95)[-0.948,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Mar 2019 04:02:12 -0000 Author: bcran Date: Sat Mar 2 04:02:11 2019 New Revision: 344718 URL: https://svnweb.freebsd.org/changeset/base/344718 Log: EFI: don't call printf after ExitBootServices, since it uses Boot Services ExitBootServices terminates all boot services including console access. Attempting to call printf afterwards can result in a crash, depending on the implementation. Move any printf statements to before we call bi_load, and remove any that depend on calling bi_load first. Reviewed by: imp, tsoome Differential Revision: https://reviews.freebsd.org/D19374 Modified: head/stand/efi/loader/arch/arm/exec.c head/stand/efi/loader/arch/i386/elf32_freebsd.c Modified: head/stand/efi/loader/arch/arm/exec.c ============================================================================== --- head/stand/efi/loader/arch/arm/exec.c Sat Mar 2 03:17:23 2019 (r344717) +++ head/stand/efi/loader/arch/arm/exec.c Sat Mar 2 04:02:11 2019 (r344718) @@ -74,16 +74,19 @@ __elfN(arm_exec)(struct preloaded_file *fp) e = (Elf_Ehdr *)&fmp->md_data; efi_time_fini(); + + entry = efi_translate(e->e_entry); + + printf("Kernel entry at 0x%x...\n", (unsigned)entry); + printf("Kernel args: %s\n", fp->f_args); + if ((error = bi_load(fp->f_args, &modulep, &kernend)) != 0) { efi_time_init(); return (error); } - entry = efi_translate(e->e_entry); - printf("Kernel entry at 0x%x...\n", (unsigned)entry); - printf("Kernel args: %s\n", fp->f_args); - printf("modulep: %#x\n", modulep); - printf("relocation_offset %llx\n", __elfN(relocation_offset)); + /* At this point we've called ExitBootServices, so we can't call + * printf or any other function that uses Boot Services */ dev_cleanup(); Modified: head/stand/efi/loader/arch/i386/elf32_freebsd.c ============================================================================== --- head/stand/efi/loader/arch/i386/elf32_freebsd.c Sat Mar 2 03:17:23 2019 (r344717) +++ head/stand/efi/loader/arch/i386/elf32_freebsd.c Sat Mar 2 04:02:11 2019 (r344718) @@ -75,14 +75,19 @@ elf32_exec(struct preloaded_file *fp) ehdr = (Elf_Ehdr *)&(md->md_data); efi_time_fini(); + + entry = ehdr->e_entry & 0xffffff; + + printf("Start @ 0x%x ...\n", entry); + err = bi_load(fp->f_args, &modulep, &kernend); if (err != 0) { efi_time_init(); return(err); } - entry = ehdr->e_entry & 0xffffff; - printf("Start @ 0x%x ...\n", entry); + /* At this point we've called ExitBootServices, so we can't call + * printf or any other function that uses Boot Services */ dev_cleanup(); __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend);