Message ID | 99b59c349ed81d4b204353f54b89f930f01d6ee3.1550839937.git.andreyknvl@google.com (mailing list archive) |
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State | New, archived |
Headers | show
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[209.85.220.65]) by mx.google.com with SMTPS id v18sor1098320wrn.45.2019.02.22.04.53.49 for <linux-mm@kvack.org> (Google Transport Security); Fri, 22 Feb 2019 04:53:49 -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="N/CagzxO"; 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=mpZDvMXD49QdxJt8wpvUxUfka//FLmK5Q3bpesHxKPk=; b=N/CagzxODuKekdv/276f71hXtTpFv4KVsTM9wpsQCTigrrhdbo1a8DtexWnL0uLpkO 18omeTVoB8fzJ0j5vhRXb57XZU1dQgAzOHIdQfbKZw9pdxjklam5LDKdghq0pF7kUS4k TSktr+912xlWRX6ndEx5vBw3TcYrt2b8W0OjFZ0QWHqpApAu8Ul9v1iLffz1Em/x0Xya i4dGp/mgL49JMPe5c8rQczRqypr/Nip2+Eha9JF7UL97GTTb+ns7m5QrUYDBTdT9jbCq BDRsMTGNRmV1HHpb/DISeZc2DQhKRnEurBM5elN5TifJa0lXs64tIKkY6Q2oGNBe/Q7A j6NQ== X-Google-Smtp-Source: AHgI3IavQme072cpLVKWYOoRpuCla4tOdeXjezjFtFrbJI9VPdNaXp7MfZlgZAflIs5r0SUzqIri2w== X-Received: by 2002:adf:fecd:: with SMTP id q13mr2883485wrs.3.1550840029193; Fri, 22 Feb 2019 04:53:49 -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.34.2019.02.22.04.53.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Feb 2019 04:53:48 -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 10/12] tracing, arm64: untag user pointers in seq_print_user_ip Date: Fri, 22 Feb 2019 13:53:22 +0100 Message-Id: <99b59c349ed81d4b204353f54b89f930f01d6ee3.1550839937.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/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 54373d93e251..7c893328f97b 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -379,7 +379,7 @@ static int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm, const struct vm_area_struct *vma; down_read(&mm->mmap_sem); - vma = find_vma(mm, ip); + vma = find_vma(mm, untagged_addr(ip)); if (vma) { file = vma->vm_file; vmstart = vma->vm_start;
seq_print_user_ip() 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> --- kernel/trace/trace_output.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)