From patchwork Tue Apr 5 07:32:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 557259 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F1833C3527D for ; Tue, 5 Apr 2022 10:29:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356198AbiDEKXW (ORCPT ); Tue, 5 Apr 2022 06:23:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46088 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234999AbiDEJap (ORCPT ); Tue, 5 Apr 2022 05:30:45 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78F40E7F7E; Tue, 5 Apr 2022 02:17:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 2482CB81B14; Tue, 5 Apr 2022 09:17:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84304C385A0; Tue, 5 Apr 2022 09:17:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649150270; bh=+XNFu5tzAZ28lpUNmFeUfsDI3/CgFwn+nRal1GCbe9E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EzN9KwGNM4+JrS2szXpFysM0PUKRAmewnnEuSlHy9ANFSWctl/LsgpLNP0wcSHiNt pASG8m3kEp41z37X99VYO3Gypy+z/cg0RtRXKBArdBzVQU+XeJwcqSJWhNmzm9sOQy 3Zxgoyg57jEJUph+YfdW4AKAV0V3z8kEimpl/tZk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jann Horn , Kees Cook , "Eric W. Biederman" Subject: [PATCH 5.16 1016/1017] coredump/elf: Pass coredump_params into fill_note_info Date: Tue, 5 Apr 2022 09:32:09 +0200 Message-Id: <20220405070424.353492195@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220405070354.155796697@linuxfoundation.org> References: <20220405070354.155796697@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Eric W. Biederman commit 9ec7d3230717b4fe9b6c7afeb4811909c23fa1d7 upstream. Instead of individually passing cprm->siginfo and cprm->regs into fill_note_info pass all of struct coredump_params. This is preparation to allow fill_files_note to use the existing vma snapshot. Reviewed-by: Jann Horn Reviewed-by: Kees Cook Signed-off-by: "Eric W. Biederman" Signed-off-by: Greg Kroah-Hartman --- fs/binfmt_elf.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1823,7 +1823,7 @@ static int fill_thread_core_info(struct static int fill_note_info(struct elfhdr *elf, int phdrs, struct elf_note_info *info, - const kernel_siginfo_t *siginfo, struct pt_regs *regs) + struct coredump_params *cprm) { struct task_struct *dump_task = current; const struct user_regset_view *view = task_user_regset_view(dump_task); @@ -1895,7 +1895,7 @@ static int fill_note_info(struct elfhdr * Now fill in each thread's information. */ for (t = info->thread; t != NULL; t = t->next) - if (!fill_thread_core_info(t, view, siginfo->si_signo, &info->size)) + if (!fill_thread_core_info(t, view, cprm->siginfo->si_signo, &info->size)) return 0; /* @@ -1904,7 +1904,7 @@ static int fill_note_info(struct elfhdr fill_psinfo(psinfo, dump_task->group_leader, dump_task->mm); info->size += notesize(&info->psinfo); - fill_siginfo_note(&info->signote, &info->csigdata, siginfo); + fill_siginfo_note(&info->signote, &info->csigdata, cprm->siginfo); info->size += notesize(&info->signote); fill_auxv_note(&info->auxv, current->mm); @@ -2052,7 +2052,7 @@ static int elf_note_info_init(struct elf static int fill_note_info(struct elfhdr *elf, int phdrs, struct elf_note_info *info, - const kernel_siginfo_t *siginfo, struct pt_regs *regs) + struct coredump_params *cprm) { struct core_thread *ct; struct elf_thread_status *ets; @@ -2073,13 +2073,13 @@ static int fill_note_info(struct elfhdr list_for_each_entry(ets, &info->thread_list, list) { int sz; - sz = elf_dump_thread_status(siginfo->si_signo, ets); + sz = elf_dump_thread_status(cprm->siginfo->si_signo, ets); info->thread_status_size += sz; } /* now collect the dump for the current */ memset(info->prstatus, 0, sizeof(*info->prstatus)); - fill_prstatus(&info->prstatus->common, current, siginfo->si_signo); - elf_core_copy_regs(&info->prstatus->pr_reg, regs); + fill_prstatus(&info->prstatus->common, current, cprm->siginfo->si_signo); + elf_core_copy_regs(&info->prstatus->pr_reg, cprm->regs); /* Set up header */ fill_elf_header(elf, phdrs, ELF_ARCH, ELF_CORE_EFLAGS); @@ -2095,7 +2095,7 @@ static int fill_note_info(struct elfhdr fill_note(info->notes + 1, "CORE", NT_PRPSINFO, sizeof(*info->psinfo), info->psinfo); - fill_siginfo_note(info->notes + 2, &info->csigdata, siginfo); + fill_siginfo_note(info->notes + 2, &info->csigdata, cprm->siginfo); fill_auxv_note(info->notes + 3, current->mm); info->numnote = 4; @@ -2105,8 +2105,8 @@ static int fill_note_info(struct elfhdr } /* Try to dump the FPU. */ - info->prstatus->pr_fpvalid = elf_core_copy_task_fpregs(current, regs, - info->fpu); + info->prstatus->pr_fpvalid = + elf_core_copy_task_fpregs(current, cprm->regs, info->fpu); if (info->prstatus->pr_fpvalid) fill_note(info->notes + info->numnote++, "CORE", NT_PRFPREG, sizeof(*info->fpu), info->fpu); @@ -2219,7 +2219,7 @@ static int elf_core_dump(struct coredump * Collect all the non-memory information about the process for the * notes. This also sets up the file header. */ - if (!fill_note_info(&elf, e_phnum, &info, cprm->siginfo, cprm->regs)) + if (!fill_note_info(&elf, e_phnum, &info, cprm)) goto end_coredump; has_dumped = 1;