From patchwork Fri Apr 5 13:34:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 10887381 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C0E4E1575 for ; Fri, 5 Apr 2019 13:35:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9B7AD285CC for ; Fri, 5 Apr 2019 13:35:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8980A28B5A; Fri, 5 Apr 2019 13:35:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B9CA0285CC for ; Fri, 5 Apr 2019 13:35:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726594AbfDENfI (ORCPT ); Fri, 5 Apr 2019 09:35:08 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:48245 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726513AbfDENfH (ORCPT ); Fri, 5 Apr 2019 09:35:07 -0400 Received: from localhost ([127.0.0.1] helo=flow.W.breakpoint.cc) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1hCOzk-0002tV-75; Fri, 05 Apr 2019 15:35:00 +0200 From: Sebastian Andrzej Siewior To: linux-security-module@vger.kernel.org Cc: John Johansen , James Morris , "Serge E. Hallyn" , tglx@linutronix.de, Sebastian Andrzej Siewior Subject: [PATCH 2/2] apparmor: Switch to GFP_KERNEL where possible Date: Fri, 5 Apr 2019 15:34:58 +0200 Message-Id: <20190405133458.4809-2-bigeasy@linutronix.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190405133458.4809-1-bigeasy@linutronix.de> References: <20190405133458.4809-1-bigeasy@linutronix.de> MIME-Version: 1.0 Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: X-Virus-Scanned: ClamAV using ClamSMTP After removing preempt_disable() from get_buffers() it is possible to replace a few GFP_ATOMIC allocations with GFP_KERNEL. Replace GFP_ATOMIC allocations with GFP_KERNEL where the context looks to bee preepmtible. Signed-off-by: Sebastian Andrzej Siewior --- security/apparmor/domain.c | 20 ++++++++++---------- security/apparmor/file.c | 2 +- security/apparmor/mount.c | 2 +- 3 files changed, 12 insertions(+), 12 deletions(-) diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c index 1f4a6e420b6d3..b8114d9988bac 100644 --- a/security/apparmor/domain.c +++ b/security/apparmor/domain.c @@ -524,7 +524,7 @@ struct aa_label *x_table_lookup(struct aa_profile *profile, u32 xindex, label = &new_profile->label; continue; } - label = aa_label_parse(&profile->label, *name, GFP_ATOMIC, + label = aa_label_parse(&profile->label, *name, GFP_KERNEL, true, false); if (IS_ERR(label)) label = NULL; @@ -604,7 +604,7 @@ static struct aa_label *x_to_label(struct aa_profile *profile, /* base the stack on post domain transition */ struct aa_label *base = new; - new = aa_label_parse(base, stack, GFP_ATOMIC, true, false); + new = aa_label_parse(base, stack, GFP_KERNEL, true, false); if (IS_ERR(new)) new = NULL; aa_put_label(base); @@ -712,7 +712,7 @@ static struct aa_label *profile_transition(struct aa_profile *profile, if (DEBUG_ON) { dbg_printk("apparmor: scrubbing environment variables" " for %s profile=", name); - aa_label_printk(new, GFP_ATOMIC); + aa_label_printk(new, GFP_KERNEL); dbg_printk("\n"); } *secure_exec = true; @@ -788,7 +788,7 @@ static int profile_onexec(struct aa_profile *profile, struct aa_label *onexec, if (DEBUG_ON) { dbg_printk("apparmor: scrubbing environment " "variables for %s label=", xname); - aa_label_printk(onexec, GFP_ATOMIC); + aa_label_printk(onexec, GFP_KERNEL); dbg_printk("\n"); } *secure_exec = true; @@ -822,7 +822,7 @@ static struct aa_label *handle_onexec(struct aa_label *label, bprm, buffer, cond, unsafe)); if (error) return ERR_PTR(error); - new = fn_label_build_in_ns(label, profile, GFP_ATOMIC, + new = fn_label_build_in_ns(label, profile, GFP_KERNEL, aa_get_newest_label(onexec), profile_transition(profile, bprm, buffer, cond, unsafe)); @@ -834,9 +834,9 @@ static struct aa_label *handle_onexec(struct aa_label *label, buffer, cond, unsafe)); if (error) return ERR_PTR(error); - new = fn_label_build_in_ns(label, profile, GFP_ATOMIC, + new = fn_label_build_in_ns(label, profile, GFP_KERNEL, aa_label_merge(&profile->label, onexec, - GFP_ATOMIC), + GFP_KERNEL), profile_transition(profile, bprm, buffer, cond, unsafe)); } @@ -902,7 +902,7 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm) new = handle_onexec(label, ctx->onexec, ctx->token, bprm, buffer, &cond, &unsafe); else - new = fn_label_build(label, profile, GFP_ATOMIC, + new = fn_label_build(label, profile, GFP_KERNEL, profile_transition(profile, bprm, buffer, &cond, &unsafe)); @@ -946,7 +946,7 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm) if (DEBUG_ON) { dbg_printk("scrubbing environment variables for %s " "label=", bprm->filename); - aa_label_printk(new, GFP_ATOMIC); + aa_label_printk(new, GFP_KERNEL); dbg_printk("\n"); } bprm->secureexec = 1; @@ -957,7 +957,7 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm) if (DEBUG_ON) { dbg_printk("apparmor: clearing unsafe personality " "bits. %s label=", bprm->filename); - aa_label_printk(new, GFP_ATOMIC); + aa_label_printk(new, GFP_KERNEL); dbg_printk("\n"); } bprm->per_clear |= PER_CLEAR_ON_SETID; diff --git a/security/apparmor/file.c b/security/apparmor/file.c index e422a3f59e80c..3eb2c5369711c 100644 --- a/security/apparmor/file.c +++ b/security/apparmor/file.c @@ -80,7 +80,7 @@ static void file_audit_cb(struct audit_buffer *ab, void *va) if (aad(sa)->peer) { audit_log_format(ab, " target="); aa_label_xaudit(ab, labels_ns(aad(sa)->label), aad(sa)->peer, - FLAG_VIEW_SUBNS, GFP_ATOMIC); + FLAG_VIEW_SUBNS, GFP_KERNEL); } else if (aad(sa)->fs.target) { audit_log_format(ab, " target="); audit_log_untrustedstring(ab, aad(sa)->fs.target); diff --git a/security/apparmor/mount.c b/security/apparmor/mount.c index 8a6cf1c14e82a..d73bc3ceaf9f5 100644 --- a/security/apparmor/mount.c +++ b/security/apparmor/mount.c @@ -679,7 +679,7 @@ int aa_pivotroot(struct aa_label *label, const struct path *old_path, old_buffer = aa_get_buffer(); new_buffer = aa_get_buffer(); - target = fn_label_build(label, profile, GFP_ATOMIC, + target = fn_label_build(label, profile, GFP_KERNEL, build_pivotroot(profile, new_path, new_buffer, old_path, old_buffer)); if (!target) {