From nobody Fri Feb 13 19:29:09 2026 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 36C61E7D0B6 for ; Thu, 21 Sep 2023 22:50:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229916AbjIUWua (ORCPT ); Thu, 21 Sep 2023 18:50:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52440 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230456AbjIUWuY (ORCPT ); Thu, 21 Sep 2023 18:50:24 -0400 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 552B6585C3 for ; Thu, 21 Sep 2023 13:33:38 -0700 (PDT) Received: by mail-pl1-x649.google.com with SMTP id d9443c01a7336-1c40ac5b6e7so11371695ad.0 for ; Thu, 21 Sep 2023 13:33:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1695328418; x=1695933218; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=pekGycpm690ftEnzP10xe6Ye5goWUg/PNLNn/FLDQrU=; b=lwSNIm63R+7w1SGh93pi7J7uo6VBJm+uY9BngSBpoYHuLRB1GwdCJ7SWRCejttudXa ThCTZ+h2tE/t/XM3gNkIreJrE6CjrLT4MeO5waQTOpIbIirJ958HB0ItsrXXUAhkK3pz 6+j2P74GJCOqjsYqPrVPu2z25l34HXWg1Fr7d7Ub7xY9E1PGz43Rmplcd45u3ml5LZ8J Gc/KittbcQLNdF4Ctn3YV4aorSEWHg0epHChNlB1R59rDpndkyVrdmRogZp556tzw/8B 6U5czBzwMrasMbHvuB6OeEWhkMco9dQg2/jFPlwO7ePqYf3JHivzvTKbdPKDLrnvAsXU uyWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695328418; x=1695933218; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=pekGycpm690ftEnzP10xe6Ye5goWUg/PNLNn/FLDQrU=; b=Uas5/zbHSmNeRkpivWyOkg+cW5EQopM+75DicCWV1Hs7uG46RKCVH5H3pB/Y5N6ILd n/hRoz48JifMZBZy6idKlgKYBHj+iFyZVwm3sdU3kM3S2Gmy2qX1poRqWFGGkyPzZwhz XEgW60KKCnilSXJ8jy7elT2ApzOpTdY2As3iJB+2e5bQ9BNbQsnH+NUAGyKvS3o7c3g2 cGZRYW3yPqzOvY5Q/GhM1wKracY807SLMhVaeQ+dPHRzK1vWydeWPG5ze3H0nTlVU9hL AxyelhzM5BaIWeRO6Y+GdKmkNsJBlDg6wpewW5Ta6vRQPpXIsMKMYWD6wfd8JX+/SLjQ rxVg== X-Gm-Message-State: AOJu0YywB/I4KgRXKqgHCT0auAKHIwK5PXHxhfXmJi9d9U1W1pWzI6QB f0KWN9Mf2OWzs9xzLslTuW5xEjv40Sc= X-Google-Smtp-Source: AGHT+IEF4UT19Y0uaQX2IVlYHJIurtmC15TJZ1HuZVfkpN+vNSXFUmg/Of1RoXtQbwOKngdV2kpar7enry4= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:c945:b0:1c5:a79f:8ebb with SMTP id i5-20020a170902c94500b001c5a79f8ebbmr85481pla.6.1695328417821; Thu, 21 Sep 2023 13:33:37 -0700 (PDT) Reply-To: Sean Christopherson Date: Thu, 21 Sep 2023 13:33:19 -0700 In-Reply-To: <20230921203331.3746712-1-seanjc@google.com> Mime-Version: 1.0 References: <20230921203331.3746712-1-seanjc@google.com> X-Mailer: git-send-email 2.42.0.515.g380fc7ccd1-goog Message-ID: <20230921203331.3746712-3-seanjc@google.com> Subject: [PATCH 02/13] KVM: Actually truncate the inode when doing PUNCH_HOLE for guest_memfd From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Michael Roth , Binbin Wu Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Restore the call to truncate_inode_pages_range() in guest_memfd's handling of PUNCH_HOLE that was unintentionally removed in a rebase gone bad. Reported-by: Michael Roth Fixes: 1d46f95498c5 ("KVM: Add KVM_CREATE_GUEST_MEMFD ioctl() for guest-spe= cific backing memory") Signed-off-by: Sean Christopherson --- virt/kvm/guest_mem.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/virt/kvm/guest_mem.c b/virt/kvm/guest_mem.c index a819367434e9..3c9e83a596fe 100644 --- a/virt/kvm/guest_mem.c +++ b/virt/kvm/guest_mem.c @@ -140,10 +140,13 @@ static long kvm_gmem_punch_hole(struct inode *inode, = loff_t offset, loff_t len) */ filemap_invalidate_lock(inode->i_mapping); =20 - list_for_each_entry(gmem, gmem_list, entry) { + list_for_each_entry(gmem, gmem_list, entry) kvm_gmem_invalidate_begin(gmem, start, end); + + truncate_inode_pages_range(inode->i_mapping, offset, offset + len - 1); + + list_for_each_entry(gmem, gmem_list, entry) kvm_gmem_invalidate_end(gmem, start, end); - } =20 filemap_invalidate_unlock(inode->i_mapping); =20 --=20 2.42.0.515.g380fc7ccd1-goog