Message ID | ebc80132c8ebf6016821ddffbb7e461bd2484824.1550839937.git.andreyknvl@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[209.85.220.65]) by mx.google.com with SMTPS id b14sor1109912wrx.20.2019.02.22.04.53.46 for <linux-mm@kvack.org> (Google Transport Security); Fri, 22 Feb 2019 04:53:46 -0800 (PST) Received-SPF: pass (google.com: domain of andreyknvl@google.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=dFFShaLk; spf=pass (google.com: domain of andreyknvl@google.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=andreyknvl@google.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9mSxyMmz1xjHsHJUyT/WYIPnpYi9SCNSb/qUJqV67bQ=; b=dFFShaLkfC9Jd78NrGHT6+qV8Fa9yuKItk3VxryuG9FBzLyVutr/noYyEqX9rPsCPB 4FR/7879ajA8ORjVk4I07QF8PQLg274w2Q+K0O39R3Ga3Hhea7F4g92KaP8LM4y5+Hso eJt1r7agSQJ/Q7Cx/ewAN6NsplIo0lNiUtrymbVmaJov1lsCukOg7OdDCcVG/G6dymSR 5NrIRbGPjHAFt0tx/2kWNS9S69vHxnpOLSsET8RPCLmIYV5M4RxLn41hJi0rYK9TmjkN 4J4iqkL9iIltHwkRu+ZKdYA7Xy0gQC5aG2HVCItmVD26gYOu7PxGByh9QtCwnvGsjRA4 qTzA== X-Google-Smtp-Source: AHgI3IYB1rxXC3qLSPjqnlg3vyINEmisEJ9COGx3+BlbVTSYQsvRd/r4g+wzkk/8Tl6H/RsXQOXN5Q== X-Received: by 2002:a5d:500c:: with SMTP id e12mr3055201wrt.27.1550840025673; Fri, 22 Feb 2019 04:53:45 -0800 (PST) Received: from andreyknvl0.muc.corp.google.com ([2a00:79e0:15:13:8ce:d7fa:9f4c:492]) by smtp.gmail.com with ESMTPSA id o14sm808209wrp.34.2019.02.22.04.53.43 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Feb 2019 04:53:44 -0800 (PST) From: Andrey Konovalov <andreyknvl@google.com> To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, Mark Rutland <mark.rutland@arm.com>, Robin Murphy <robin.murphy@arm.com>, Kees Cook <keescook@chromium.org>, Kate Stewart <kstewart@linuxfoundation.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Andrew Morton <akpm@linux-foundation.org>, Ingo Molnar <mingo@kernel.org>, "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>, Shuah Khan <shuah@kernel.org>, Vincenzo Frascino <vincenzo.frascino@arm.com>, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Dmitry Vyukov <dvyukov@google.com>, Kostya Serebryany <kcc@google.com>, Evgeniy Stepanov <eugenis@google.com>, Lee Smith <Lee.Smith@arm.com>, Ramana Radhakrishnan <Ramana.Radhakrishnan@arm.com>, Jacob Bramley <Jacob.Bramley@arm.com>, Ruben Ayrapetyan <Ruben.Ayrapetyan@arm.com>, Chintan Pandya <cpandya@codeaurora.org>, Luc Van Oostenryck <luc.vanoostenryck@gmail.com>, Dave Martin <Dave.Martin@arm.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Szabolcs Nagy <Szabolcs.Nagy@arm.com>, Andrey Konovalov <andreyknvl@google.com> Subject: [PATCH v10 08/12] net, arm64: untag user pointers in tcp_zerocopy_receive Date: Fri, 22 Feb 2019 13:53:20 +0100 Message-Id: <ebc80132c8ebf6016821ddffbb7e461bd2484824.1550839937.git.andreyknvl@google.com> X-Mailer: git-send-email 2.21.0.rc0.258.g878e2cd30e-goog In-Reply-To: <cover.1550839937.git.andreyknvl@google.com> References: <cover.1550839937.git.andreyknvl@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
arm64: untag user pointers passed to the kernel
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diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index cf3c5095c10e..80f3c1fb9809 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1756,6 +1756,8 @@ static int tcp_zerocopy_receive(struct sock *sk, int inq; int ret; + address = untagged_addr(address); + if (address & (PAGE_SIZE - 1) || address != zc->address) return -EINVAL;
tcp_zerocopy_receive() uses provided user pointers for vma lookups, which can only by done with untagged pointers. Untag user pointers in this function. Signed-off-by: Andrey Konovalov <andreyknvl@google.com> --- net/ipv4/tcp.c | 2 ++ 1 file changed, 2 insertions(+)