From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5E882C433EF for ; Wed, 8 Jun 2022 07:37:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+Rmrm29y2TrtkozYTkuSHfBYElyRV29jyI54kOqUY2U=; b=tfy7GjLhuomda/ PdzpBKB96RzI2xJCy8hX9wHnoUNL16t7abf7j8B+Psr/iSKeJAIDZbOcqL6dfvb328RZlFZLEAnn6 vjp9o7jgxIWaW1++NHx8gIw7B1Q+39HpjcAfHrv2VEj4MSvMQ3qg5VW/tE9Kw8qh3I+Y/QvwW0Q3J PAmoeSp/yOgx3K+FFKilqtbQitBoe+Nmc66xLq1F4n9WZ4aPQV+JIEdDOaqseOiislsq7AQLirtEO gRr7km1BXkvWGi1l+Wqc86j2ON/0tVPk8BJ0gbP0qd2hUUu6lmAQzbamZW2adw2RsSQpfplZL6yix IJCdM6XNWYBLd5P0bujg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nyqEi-00BdfK-1Z; Wed, 08 Jun 2022 07:36:16 +0000 Received: from mail-pg1-x52e.google.com ([2607:f8b0:4864:20::52e]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nyqEe-00Bdcw-Sk for linux-arm-kernel@lists.infradead.org; Wed, 08 Jun 2022 07:36:14 +0000 Received: by mail-pg1-x52e.google.com with SMTP id c18so9817945pgh.11 for ; Wed, 08 Jun 2022 00:36:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=9dT1YbLiitv03+PdOtWagge0EdcnKxpI77SoGaYuRcY=; b=SP8iQOXw3TyCNNE3e5y15XHPh4wkAzTM4T6CFjlFHuZOTsIwlqatl/sMUjuDNpMCZt V3GQpJrRiJpZ546fXVFaonmkMIYX64ZZAaT9a2qJ5+BUEd7IVk+bh3K58dxvoSBHn92q k3oIfugG7ZX3poTCMLMZFoDidkgYglLZZJBVg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=9dT1YbLiitv03+PdOtWagge0EdcnKxpI77SoGaYuRcY=; b=yErHgaJi8BQz4JbfnzMLHukbGRZaOJnqMRoY6zRU/6lVarxkvLDuGLB1P9L16mdcy5 t/OMG2GlyoUrkI7pM400KRGhZlRLr8sBOIQ8te35Uy40ryaHoNborp4Dce7y8uKiMDyp CW0b5p3HwUr5lA9zEIfMo35DtPKwgmijvX7/NEAXJrGeHQp5WmPDtPA01xeIyZ13eXb8 3OBAVITVQthM1PtMezAjyg/pAkZtruHGi5hCicbRPVrFsW3mttxVZAXs+1eX5gqUaD2g ivAweR0leoj8DIqWNbslmxtnM2UMgGJY2nDEMhNrxl6KlZPK8IpuH0/f6P1Um7hD4tbn 5F5A== X-Gm-Message-State: AOAM533B8rjA+LcJ8QMXQt9r8e8YJlN/T5JR+BYUh0wc2djiTkugs4DK Uu7SzF+9+U/5KUqLDO3HkKfAlQ== X-Google-Smtp-Source: ABdhPJwaxdsj6eMQY2PXnXyn7JGln1BneLzhB4mTT8eUahzdJoFLMCIyVlAJyLCCAWjTQesyjDXvzw== X-Received: by 2002:a63:65c7:0:b0:3fc:85b5:30c0 with SMTP id z190-20020a6365c7000000b003fc85b530c0mr29388641pgb.165.1654673770813; Wed, 08 Jun 2022 00:36:10 -0700 (PDT) Received: from google.com ([2401:fa00:8f:203:463d:a192:6128:66e]) by smtp.gmail.com with ESMTPSA id d4-20020a170903230400b00167729dfe0bsm6439373plh.168.2022.06.08.00.36.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Jun 2022 00:36:10 -0700 (PDT) Date: Wed, 8 Jun 2022 16:36:05 +0900 From: Sergey Senozhatsky To: Naresh Kamboju , Minchan Kim Cc: open list , linux-fsdevel@vger.kernel.org, Linux ARM , "open list:KERNEL SELFTEST FRAMEWORK" , linux-block , regressions@lists.linux.dev, Jens Axboe , Nitin Gupta , Sergey Senozhatsky Subject: Re: qemu-arm: zram: mkfs.ext4 : Unable to handle kernel NULL pointer dereference at virtual address 00000140 Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220608_003613_039619_75A21104 X-CRM114-Status: GOOD ( 12.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On (22/06/08 11:45), Sergey Senozhatsky wrote: > > Something like this? May be even something like below. Move static initializer to cpu up hook. --- mm/zsmalloc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 9152fbde33b5..6d3789d834e2 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -453,9 +453,7 @@ MODULE_ALIAS("zpool-zsmalloc"); #endif /* CONFIG_ZPOOL */ /* per-cpu VM mapping areas for zspage accesses that cross page boundaries */ -static DEFINE_PER_CPU(struct mapping_area, zs_map_area) = { - .lock = INIT_LOCAL_LOCK(lock), -}; +static DEFINE_PER_CPU(struct mapping_area, zs_map_area); static __maybe_unused int is_first_page(struct page *page) { @@ -1113,6 +1111,7 @@ static inline int __zs_cpu_up(struct mapping_area *area) area->vm_buf = kmalloc(ZS_MAX_ALLOC_SIZE, GFP_KERNEL); if (!area->vm_buf) return -ENOMEM; + local_lock_init(&area->lock); return 0; } -- 2.36.1.255.ge46751e96f-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel