From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C5EB02AB22 for ; Wed, 20 Sep 2023 12:21:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D5B0C433C7; Wed, 20 Sep 2023 12:21:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695212503; bh=UR0mBbCkEor60Tq2VAUJVav0OvZ+p2Q8UdapfDPv1kI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lqsTV+u4BP2nVVtcmCxcHeRaCcXnsiPQN4eAnc1O+9HspcyiIJnhVmz+JZm166lHW //2okf3UmT2rLzWtPcjkw6lRmyt18Fliux/ZJo7wOSGa2nhqUMc2T0KgzP3efFvJqf JSJn82DpLFBeTsEE53BKYz0FPxI6FziVOZGS+apg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Paul E. McKenney" , Sasha Levin Subject: [PATCH 5.10 07/83] scftorture: Forgive memory-allocation failure if KASAN Date: Wed, 20 Sep 2023 13:30:57 +0200 Message-ID: <20230920112826.940393821@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112826.634178162@linuxfoundation.org> References: <20230920112826.634178162@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul E. McKenney [ Upstream commit 013608cd0812bdb21fc26d39ed8fdd2fc76e8b9b ] Kernels built with CONFIG_KASAN=y quarantine newly freed memory in order to better detect use-after-free errors. However, this can exhaust memory more quickly in allocator-heavy tests, which can result in spurious scftorture failure. This commit therefore forgives memory-allocation failure in kernels built with CONFIG_KASAN=y, but continues counting the errors for use in detailed test-result analyses. Signed-off-by: Paul E. McKenney Signed-off-by: Sasha Levin --- kernel/scftorture.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/kernel/scftorture.c b/kernel/scftorture.c index 060ee0b1569a0..be86207a2ab68 100644 --- a/kernel/scftorture.c +++ b/kernel/scftorture.c @@ -158,7 +158,8 @@ static void scf_torture_stats_print(void) scfs.n_all_wait += scf_stats_p[i].n_all_wait; } if (atomic_read(&n_errs) || atomic_read(&n_mb_in_errs) || - atomic_read(&n_mb_out_errs) || atomic_read(&n_alloc_errs)) + atomic_read(&n_mb_out_errs) || + (!IS_ENABLED(CONFIG_KASAN) && atomic_read(&n_alloc_errs))) bangstr = "!!! "; pr_alert("%s %sscf_invoked_count %s: %lld single: %lld/%lld single_ofl: %lld/%lld many: %lld/%lld all: %lld/%lld ", SCFTORT_FLAG, bangstr, isdone ? "VER" : "ver", invoked_count, @@ -306,7 +307,8 @@ static void scftorture_invoke_one(struct scf_statistics *scfp, struct torture_ra preempt_disable(); if (scfsp->scfs_prim == SCF_PRIM_SINGLE || scfsp->scfs_wait) { scfcp = kmalloc(sizeof(*scfcp), GFP_ATOMIC); - if (WARN_ON_ONCE(!scfcp)) { + if (!scfcp) { + WARN_ON_ONCE(!IS_ENABLED(CONFIG_KASAN)); atomic_inc(&n_alloc_errs); } else { scfcp->scfc_cpu = -1; -- 2.40.1