From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 77C4C46453 for ; Fri, 19 Apr 2024 08:00:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713513612; cv=none; b=J3RwF9oLP50LFWE07UxPWyNKLNLY7pMmWGWG8jXZZxgabFoHxEd2xOc4U9lGUpZKKrRBiuVoyDsgk5EaE6hOgiXE3Jm4NlGAFk0djFoRlxLMW020G3hW4Yq2KFi/qMouzlhwi48I93eICWgOrW/RVhJaeSeC/SQb7jnkHSp6J1c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713513612; c=relaxed/simple; bh=yvMOELS1mZJEkU7Bq72vzdWwyjmcKUeWZmIXURTaZ4M=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=IY3xvP1XCbWv0HrOqjoLG5yAAgvEtbjL7sl/c9zhxwAlsyJVKRpyfl5qW1upSZOW+MT56mcnzc5Usxtmxln7QNj0RZWDZab+H3kVil6L5VWZAgDT7VWZOBGgKlVHQ1RMDAaqGaUopP4Z2Cb42Ybm+T56iJAm2gbslnHaPDEZxZg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--tabba.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=1Kb7hfYV; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--tabba.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="1Kb7hfYV" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-de465062289so3626767276.2 for ; Fri, 19 Apr 2024 01:00:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1713513610; x=1714118410; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=t6erxIkBNPLG5XuZNesh8tT0OudDbIDHEfU5Xz+QPxo=; b=1Kb7hfYVHXuKCAgwSEJbqGelNyueomYoR0HdA+FsjVY8ZJ8IcQaiheU5riI3vu50fT xgKLXUeT00E+Lotx90K+4arUmRicLGpXTJYdaT8TadIJ7zwmQRCbfOUN1xNWS9ecgrgg 3wJSA8sWq84ipFKVBsIVjDfN+F9yvbjB6h9mjL2It01CDZOKreA2l/F9Av53wKIv4CkL qomXNvsmKt/l4E6GXOtJwcR6UJCUDqilhabVDG3iThAORnZitrSQrNWgnkh/e5gU0JRg Pca9/KRl+sZW18bXXkw6Zb4gktFm0ji8TNvpTM0kkP1ZWEaL8QAZv8J74TaekRkiOOdi N2Lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713513610; x=1714118410; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=t6erxIkBNPLG5XuZNesh8tT0OudDbIDHEfU5Xz+QPxo=; b=fyF7sN42p164uX3iyKbtQBd6bM7mMFqQ2J2ft8VjmzJ18xObGMpg0938c7cny7qJi+ pu9zb2coDOtuGLtthb8c/uLIpgLwuHx1JYlnl2wjlNu2pCaF3mTTsnuCel9V+VRyglF6 WoM+rWF6LTfy+VuocrzWzvbVyHLSzcaZ6eSOkoDN/T2h+qzUcyldKoOx38ssao4exqpC RABF5Oy9t7N8lIF3BLXXFhvfrJKmcekAem+IgZUk2o/RC75Ng8y0sXz1FerFK3Y9E9/0 rRY7ZFBtzLhF2ScNbJrQ1Br/7dpnvTMFmW1DXK1aLjTiLTHkqwyd1gY/E1utTxiL/aqV z/SQ== X-Gm-Message-State: AOJu0YyavlQ2VoIi6H1/fOo7E3N1uFhoLQ2KcSEoIINHTERFK7gRjrZI bt88/1589oubkslwb3m/i9mpeursc71PvWWutR7ZZvT1THOhsdBLyOCIg2EzyMrIQTEAlv7Cia2 ZX/92Gw4Du9AefmFdeETQxqClfPifeu4HkAN1/6zIZH4rbUmwj65DKdbwiJJ9sjlg3WgJLLrBdJ FdqNY/gST+CdSORzKD8we67v4uBiE= X-Google-Smtp-Source: AGHT+IHqpXU+N8jVJracYDow+qrEzUoO5a+YLKjZzpEsNB4jdJhcjpMhEUmtvpA6//iwz4p0TWygEvsCug== X-Received: from fuad.c.googlers.com ([fda3:e722:ac3:cc00:28:9cb1:c0a8:1613]) (user=tabba job=sendgmr) by 2002:a05:6902:2b93:b0:dc6:dfc6:4207 with SMTP id fj19-20020a0569022b9300b00dc6dfc64207mr369090ybb.10.1713513610447; Fri, 19 Apr 2024 01:00:10 -0700 (PDT) Date: Fri, 19 Apr 2024 08:59:22 +0100 In-Reply-To: <20240419075941.4085061-1-tabba@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240419075941.4085061-1-tabba@google.com> X-Mailer: git-send-email 2.44.0.769.g3c40516874-goog Message-ID: <20240419075941.4085061-13-tabba@google.com> Subject: [PATCH v3 12/31] KVM: arm64: Prevent kmemleak from accessing .hyp.data From: Fuad Tabba To: kvmarm@lists.linux.dev Cc: maz@kernel.org, will@kernel.org, qperret@google.com, tabba@google.com, seanjc@google.com, alexandru.elisei@arm.com, catalin.marinas@arm.com, philmd@linaro.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, mark.rutland@arm.com, broonie@kernel.org, joey.gouly@arm.com, rananta@google.com, smostafa@google.com Content-Type: text/plain; charset="UTF-8" From: Quentin Perret We've added a .data section for the hypervisor, which kmemleak is eager to parse. This clearly doesn't go well, so add the section to kmemleak's block list. Signed-off-by: Quentin Perret Signed-off-by: Fuad Tabba --- arch/arm64/kvm/pkvm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kvm/pkvm.c b/arch/arm64/kvm/pkvm.c index e2c08443f284..85117ea8f351 100644 --- a/arch/arm64/kvm/pkvm.c +++ b/arch/arm64/kvm/pkvm.c @@ -258,6 +258,7 @@ static int __init finalize_pkvm(void) * at, which would end badly once inaccessible. */ kmemleak_free_part(__hyp_bss_start, __hyp_bss_end - __hyp_bss_start); + kmemleak_free_part(__hyp_rodata_start, __hyp_rodata_end - __hyp_rodata_start); kmemleak_free_part_phys(hyp_mem_base, hyp_mem_size); ret = pkvm_drop_host_privileges(); -- 2.44.0.769.g3c40516874-goog