From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
Balbir Singh <bsingharora@gmail.com>,
Daniel Micay <danielmicay@gmail.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Rik van Riel <riel@redhat.com>,
Casey Schaufler <casey@schaufler-ca.com>,
PaX Team <pageexec@freemail.hu>,
Brad Spengler <spender@grsecurity.net>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
"David S. Miller" <davem@davemloft.net>,
x86@kernel.org, Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@suse.de>,
Mathias Krause <minipli@googlemail.com>, Jan Kara <jack@suse.cz>,
Vitaly Wool <vitalywool@gmail.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Dmitry Vyukov <dvyukov@google.com>,
Laura Abbott <labbott@fedoraproject.org>,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
kernel-hardening@lists.openwall.com
Subject: [PATCH v3 05/11] arm64/uaccess: Enable hardened usercopy
Date: Fri, 15 Jul 2016 14:44:19 -0700 [thread overview]
Message-ID: <1468619065-3222-6-git-send-email-keescook@chromium.org> (raw)
In-Reply-To: <1468619065-3222-1-git-send-email-keescook@chromium.org>
Enables CONFIG_HARDENED_USERCOPY checks on arm64. As done by KASAN in -next,
renames the low-level functions to __arch_copy_*_user() so a static inline
can do additional work before the copy.
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/arm64/Kconfig | 2 ++
arch/arm64/include/asm/uaccess.h | 16 ++++++++++++++--
arch/arm64/kernel/arm64ksyms.c | 4 ++--
arch/arm64/lib/copy_from_user.S | 4 ++--
arch/arm64/lib/copy_to_user.S | 4 ++--
5 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 5a0a691d4220..b771cd97f74b 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -51,10 +51,12 @@ config ARM64
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_BITREVERSE
+ select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
select HAVE_ARCH_KGDB
+ select HAVE_ARCH_LINEAR_KERNEL_MAPPING
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 9e397a542756..5d0dacdb695b 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -256,11 +256,23 @@ do { \
-EFAULT; \
})
-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __must_check __copy_in_user(void __user *to, const void __user *from, unsigned long n);
extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ check_object_size(to, n, false);
+ return __arch_copy_from_user(to, from, n);
+}
+
+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ check_object_size(from, n, true);
+ return __arch_copy_to_user(to, from, n);
+}
+
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c
index 678f30b05a45..2dc44406a7ad 100644
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -34,8 +34,8 @@ EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
/* user mem (segment) */
-EXPORT_SYMBOL(__copy_from_user);
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(__arch_copy_from_user);
+EXPORT_SYMBOL(__arch_copy_to_user);
EXPORT_SYMBOL(__clear_user);
EXPORT_SYMBOL(__copy_in_user);
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
index 17e8306dca29..0b90497d4424 100644
--- a/arch/arm64/lib/copy_from_user.S
+++ b/arch/arm64/lib/copy_from_user.S
@@ -66,7 +66,7 @@
.endm
end .req x5
-ENTRY(__copy_from_user)
+ENTRY(__arch_copy_from_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -75,7 +75,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0 // Nothing to copy
ret
-ENDPROC(__copy_from_user)
+ENDPROC(__arch_copy_from_user)
.section .fixup,"ax"
.align 2
diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S
index 21faae60f988..7a7efe255034 100644
--- a/arch/arm64/lib/copy_to_user.S
+++ b/arch/arm64/lib/copy_to_user.S
@@ -65,7 +65,7 @@
.endm
end .req x5
-ENTRY(__copy_to_user)
+ENTRY(__arch_copy_to_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -74,7 +74,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0
ret
-ENDPROC(__copy_to_user)
+ENDPROC(__arch_copy_to_user)
.section .fixup,"ax"
.align 2
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
Balbir Singh <bsingharora@gmail.com>,
Daniel Micay <danielmicay@gmail.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Rik van Riel <riel@redhat.com>,
Casey Schaufler <casey@schaufler-ca.com>,
PaX Team <pageexec@freemail.hu>,
Brad Spengler <spender@grsecurity.net>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
"David S. Miller" <davem@davemloft.net>,
x86@kernel.org, Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andy
Subject: [PATCH v3 05/11] arm64/uaccess: Enable hardened usercopy
Date: Fri, 15 Jul 2016 14:44:19 -0700 [thread overview]
Message-ID: <1468619065-3222-6-git-send-email-keescook@chromium.org> (raw)
In-Reply-To: <1468619065-3222-1-git-send-email-keescook@chromium.org>
Enables CONFIG_HARDENED_USERCOPY checks on arm64. As done by KASAN in -next,
renames the low-level functions to __arch_copy_*_user() so a static inline
can do additional work before the copy.
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/arm64/Kconfig | 2 ++
arch/arm64/include/asm/uaccess.h | 16 ++++++++++++++--
arch/arm64/kernel/arm64ksyms.c | 4 ++--
arch/arm64/lib/copy_from_user.S | 4 ++--
arch/arm64/lib/copy_to_user.S | 4 ++--
5 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 5a0a691d4220..b771cd97f74b 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -51,10 +51,12 @@ config ARM64
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_BITREVERSE
+ select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
select HAVE_ARCH_KGDB
+ select HAVE_ARCH_LINEAR_KERNEL_MAPPING
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 9e397a542756..5d0dacdb695b 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -256,11 +256,23 @@ do { \
-EFAULT; \
})
-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __must_check __copy_in_user(void __user *to, const void __user *from, unsigned long n);
extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ check_object_size(to, n, false);
+ return __arch_copy_from_user(to, from, n);
+}
+
+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ check_object_size(from, n, true);
+ return __arch_copy_to_user(to, from, n);
+}
+
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c
index 678f30b05a45..2dc44406a7ad 100644
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -34,8 +34,8 @@ EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
/* user mem (segment) */
-EXPORT_SYMBOL(__copy_from_user);
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(__arch_copy_from_user);
+EXPORT_SYMBOL(__arch_copy_to_user);
EXPORT_SYMBOL(__clear_user);
EXPORT_SYMBOL(__copy_in_user);
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
index 17e8306dca29..0b90497d4424 100644
--- a/arch/arm64/lib/copy_from_user.S
+++ b/arch/arm64/lib/copy_from_user.S
@@ -66,7 +66,7 @@
.endm
end .req x5
-ENTRY(__copy_from_user)
+ENTRY(__arch_copy_from_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -75,7 +75,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0 // Nothing to copy
ret
-ENDPROC(__copy_from_user)
+ENDPROC(__arch_copy_from_user)
.section .fixup,"ax"
.align 2
diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S
index 21faae60f988..7a7efe255034 100644
--- a/arch/arm64/lib/copy_to_user.S
+++ b/arch/arm64/lib/copy_to_user.S
@@ -65,7 +65,7 @@
.endm
end .req x5
-ENTRY(__copy_to_user)
+ENTRY(__arch_copy_to_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -74,7 +74,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0
ret
-ENDPROC(__copy_to_user)
+ENDPROC(__arch_copy_to_user)
.section .fixup,"ax"
.align 2
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
Balbir Singh <bsingharora@gmail.com>,
Daniel Micay <danielmicay@gmail.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Rik van Riel <riel@redhat.com>,
Casey Schaufler <casey@schaufler-ca.com>,
PaX Team <pageexec@freemail.hu>,
Brad Spengler <spender@grsecurity.net>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
"David S. Miller" <davem@davemloft.net>,
x86@kernel.org, Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@suse.de>,
Mathias Krause <minipli@googlemail.com>, Jan Kara <jack@suse.cz>,
Vitaly Wool <vitalywool@gmail.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Dmitry Vyukov <dvyukov@google.com>,
Laura Abbott <labbott@fedoraproject.org>,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
kernel-hardening@lists.openwall.com
Subject: [PATCH v3 05/11] arm64/uaccess: Enable hardened usercopy
Date: Fri, 15 Jul 2016 21:44:19 +0000 [thread overview]
Message-ID: <1468619065-3222-6-git-send-email-keescook@chromium.org> (raw)
In-Reply-To: <1468619065-3222-1-git-send-email-keescook@chromium.org>
Enables CONFIG_HARDENED_USERCOPY checks on arm64. As done by KASAN in -next,
renames the low-level functions to __arch_copy_*_user() so a static inline
can do additional work before the copy.
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/arm64/Kconfig | 2 ++
arch/arm64/include/asm/uaccess.h | 16 ++++++++++++++--
arch/arm64/kernel/arm64ksyms.c | 4 ++--
arch/arm64/lib/copy_from_user.S | 4 ++--
arch/arm64/lib/copy_to_user.S | 4 ++--
5 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 5a0a691d4220..b771cd97f74b 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -51,10 +51,12 @@ config ARM64
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_BITREVERSE
+ select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
select HAVE_ARCH_KGDB
+ select HAVE_ARCH_LINEAR_KERNEL_MAPPING
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 9e397a542756..5d0dacdb695b 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -256,11 +256,23 @@ do { \
-EFAULT; \
})
-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __must_check __copy_in_user(void __user *to, const void __user *from, unsigned long n);
extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ check_object_size(to, n, false);
+ return __arch_copy_from_user(to, from, n);
+}
+
+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ check_object_size(from, n, true);
+ return __arch_copy_to_user(to, from, n);
+}
+
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c
index 678f30b05a45..2dc44406a7ad 100644
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -34,8 +34,8 @@ EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
/* user mem (segment) */
-EXPORT_SYMBOL(__copy_from_user);
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(__arch_copy_from_user);
+EXPORT_SYMBOL(__arch_copy_to_user);
EXPORT_SYMBOL(__clear_user);
EXPORT_SYMBOL(__copy_in_user);
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
index 17e8306dca29..0b90497d4424 100644
--- a/arch/arm64/lib/copy_from_user.S
+++ b/arch/arm64/lib/copy_from_user.S
@@ -66,7 +66,7 @@
.endm
end .req x5
-ENTRY(__copy_from_user)
+ENTRY(__arch_copy_from_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -75,7 +75,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0 // Nothing to copy
ret
-ENDPROC(__copy_from_user)
+ENDPROC(__arch_copy_from_user)
.section .fixup,"ax"
.align 2
diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S
index 21faae60f988..7a7efe255034 100644
--- a/arch/arm64/lib/copy_to_user.S
+++ b/arch/arm64/lib/copy_to_user.S
@@ -65,7 +65,7 @@
.endm
end .req x5
-ENTRY(__copy_to_user)
+ENTRY(__arch_copy_to_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -74,7 +74,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0
ret
-ENDPROC(__copy_to_user)
+ENDPROC(__arch_copy_to_user)
.section .fixup,"ax"
.align 2
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
Balbir Singh <bsingharora@gmail.com>,
Daniel Micay <danielmicay@gmail.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Rik van Riel <riel@redhat.com>,
Casey Schaufler <casey@schaufler-ca.com>,
PaX Team <pageexec@freemail.hu>,
Brad Spengler <spender@grsecurity.net>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
"David S. Miller" <davem@davemloft.net>,
x86@kernel.org, Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@suse.de>,
Mathias Krause <minipli@googlemail.com>, Jan Kara <jack@suse.cz>,
Vitaly Wool <vitalywool@gmail.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Dmitry Vyukov <dvyukov@google.com>,
Laura Abbott <labbott@fedoraproject.org>,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
kernel-hardening@lists.openwall.com
Subject: [PATCH v3 05/11] arm64/uaccess: Enable hardened usercopy
Date: Fri, 15 Jul 2016 14:44:19 -0700 [thread overview]
Message-ID: <1468619065-3222-6-git-send-email-keescook@chromium.org> (raw)
In-Reply-To: <1468619065-3222-1-git-send-email-keescook@chromium.org>
Enables CONFIG_HARDENED_USERCOPY checks on arm64. As done by KASAN in -next,
renames the low-level functions to __arch_copy_*_user() so a static inline
can do additional work before the copy.
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/arm64/Kconfig | 2 ++
arch/arm64/include/asm/uaccess.h | 16 ++++++++++++++--
arch/arm64/kernel/arm64ksyms.c | 4 ++--
arch/arm64/lib/copy_from_user.S | 4 ++--
arch/arm64/lib/copy_to_user.S | 4 ++--
5 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 5a0a691d4220..b771cd97f74b 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -51,10 +51,12 @@ config ARM64
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_BITREVERSE
+ select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
select HAVE_ARCH_KGDB
+ select HAVE_ARCH_LINEAR_KERNEL_MAPPING
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 9e397a542756..5d0dacdb695b 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -256,11 +256,23 @@ do { \
-EFAULT; \
})
-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __must_check __copy_in_user(void __user *to, const void __user *from, unsigned long n);
extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ check_object_size(to, n, false);
+ return __arch_copy_from_user(to, from, n);
+}
+
+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ check_object_size(from, n, true);
+ return __arch_copy_to_user(to, from, n);
+}
+
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c
index 678f30b05a45..2dc44406a7ad 100644
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -34,8 +34,8 @@ EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
/* user mem (segment) */
-EXPORT_SYMBOL(__copy_from_user);
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(__arch_copy_from_user);
+EXPORT_SYMBOL(__arch_copy_to_user);
EXPORT_SYMBOL(__clear_user);
EXPORT_SYMBOL(__copy_in_user);
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
index 17e8306dca29..0b90497d4424 100644
--- a/arch/arm64/lib/copy_from_user.S
+++ b/arch/arm64/lib/copy_from_user.S
@@ -66,7 +66,7 @@
.endm
end .req x5
-ENTRY(__copy_from_user)
+ENTRY(__arch_copy_from_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -75,7 +75,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0 // Nothing to copy
ret
-ENDPROC(__copy_from_user)
+ENDPROC(__arch_copy_from_user)
.section .fixup,"ax"
.align 2
diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S
index 21faae60f988..7a7efe255034 100644
--- a/arch/arm64/lib/copy_to_user.S
+++ b/arch/arm64/lib/copy_to_user.S
@@ -65,7 +65,7 @@
.endm
end .req x5
-ENTRY(__copy_to_user)
+ENTRY(__arch_copy_to_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -74,7 +74,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0
ret
-ENDPROC(__copy_to_user)
+ENDPROC(__arch_copy_to_user)
.section .fixup,"ax"
.align 2
--
2.7.4
--
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WARNING: multiple messages have this Message-ID (diff)
From: keescook@chromium.org (Kees Cook)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 05/11] arm64/uaccess: Enable hardened usercopy
Date: Fri, 15 Jul 2016 14:44:19 -0700 [thread overview]
Message-ID: <1468619065-3222-6-git-send-email-keescook@chromium.org> (raw)
In-Reply-To: <1468619065-3222-1-git-send-email-keescook@chromium.org>
Enables CONFIG_HARDENED_USERCOPY checks on arm64. As done by KASAN in -next,
renames the low-level functions to __arch_copy_*_user() so a static inline
can do additional work before the copy.
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/arm64/Kconfig | 2 ++
arch/arm64/include/asm/uaccess.h | 16 ++++++++++++++--
arch/arm64/kernel/arm64ksyms.c | 4 ++--
arch/arm64/lib/copy_from_user.S | 4 ++--
arch/arm64/lib/copy_to_user.S | 4 ++--
5 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 5a0a691d4220..b771cd97f74b 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -51,10 +51,12 @@ config ARM64
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_BITREVERSE
+ select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
select HAVE_ARCH_KGDB
+ select HAVE_ARCH_LINEAR_KERNEL_MAPPING
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 9e397a542756..5d0dacdb695b 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -256,11 +256,23 @@ do { \
-EFAULT; \
})
-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __must_check __copy_in_user(void __user *to, const void __user *from, unsigned long n);
extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ check_object_size(to, n, false);
+ return __arch_copy_from_user(to, from, n);
+}
+
+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ check_object_size(from, n, true);
+ return __arch_copy_to_user(to, from, n);
+}
+
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c
index 678f30b05a45..2dc44406a7ad 100644
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -34,8 +34,8 @@ EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
/* user mem (segment) */
-EXPORT_SYMBOL(__copy_from_user);
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(__arch_copy_from_user);
+EXPORT_SYMBOL(__arch_copy_to_user);
EXPORT_SYMBOL(__clear_user);
EXPORT_SYMBOL(__copy_in_user);
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
index 17e8306dca29..0b90497d4424 100644
--- a/arch/arm64/lib/copy_from_user.S
+++ b/arch/arm64/lib/copy_from_user.S
@@ -66,7 +66,7 @@
.endm
end .req x5
-ENTRY(__copy_from_user)
+ENTRY(__arch_copy_from_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -75,7 +75,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0 // Nothing to copy
ret
-ENDPROC(__copy_from_user)
+ENDPROC(__arch_copy_from_user)
.section .fixup,"ax"
.align 2
diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S
index 21faae60f988..7a7efe255034 100644
--- a/arch/arm64/lib/copy_to_user.S
+++ b/arch/arm64/lib/copy_to_user.S
@@ -65,7 +65,7 @@
.endm
end .req x5
-ENTRY(__copy_to_user)
+ENTRY(__arch_copy_to_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -74,7 +74,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0
ret
-ENDPROC(__copy_to_user)
+ENDPROC(__arch_copy_to_user)
.section .fixup,"ax"
.align 2
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
Balbir Singh <bsingharora@gmail.com>,
Daniel Micay <danielmicay@gmail.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Rik van Riel <riel@redhat.com>,
Casey Schaufler <casey@schaufler-ca.com>,
PaX Team <pageexec@freemail.hu>,
Brad Spengler <spender@grsecurity.net>,
Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
"David S. Miller" <davem@davemloft.net>,
x86@kernel.org, Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@suse.de>,
Mathias Krause <minipli@googlemail.com>, Jan Kara <jack@suse.cz>,
Vitaly Wool <vitalywool@gmail.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Dmitry Vyukov <dvyukov@google.com>,
Laura Abbott <labbott@fedoraproject.org>,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
kernel-hardening@lists.openwall.com
Subject: [kernel-hardening] [PATCH v3 05/11] arm64/uaccess: Enable hardened usercopy
Date: Fri, 15 Jul 2016 14:44:19 -0700 [thread overview]
Message-ID: <1468619065-3222-6-git-send-email-keescook@chromium.org> (raw)
In-Reply-To: <1468619065-3222-1-git-send-email-keescook@chromium.org>
Enables CONFIG_HARDENED_USERCOPY checks on arm64. As done by KASAN in -next,
renames the low-level functions to __arch_copy_*_user() so a static inline
can do additional work before the copy.
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/arm64/Kconfig | 2 ++
arch/arm64/include/asm/uaccess.h | 16 ++++++++++++++--
arch/arm64/kernel/arm64ksyms.c | 4 ++--
arch/arm64/lib/copy_from_user.S | 4 ++--
arch/arm64/lib/copy_to_user.S | 4 ++--
5 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 5a0a691d4220..b771cd97f74b 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -51,10 +51,12 @@ config ARM64
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_BITREVERSE
+ select HAVE_ARCH_HARDENED_USERCOPY
select HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP && !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
select HAVE_ARCH_KGDB
+ select HAVE_ARCH_LINEAR_KERNEL_MAPPING
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 9e397a542756..5d0dacdb695b 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -256,11 +256,23 @@ do { \
-EFAULT; \
})
-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check __arch_copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __must_check __copy_in_user(void __user *to, const void __user *from, unsigned long n);
extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ check_object_size(to, n, false);
+ return __arch_copy_from_user(to, from, n);
+}
+
+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ check_object_size(from, n, true);
+ return __arch_copy_to_user(to, from, n);
+}
+
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c
index 678f30b05a45..2dc44406a7ad 100644
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -34,8 +34,8 @@ EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
/* user mem (segment) */
-EXPORT_SYMBOL(__copy_from_user);
-EXPORT_SYMBOL(__copy_to_user);
+EXPORT_SYMBOL(__arch_copy_from_user);
+EXPORT_SYMBOL(__arch_copy_to_user);
EXPORT_SYMBOL(__clear_user);
EXPORT_SYMBOL(__copy_in_user);
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
index 17e8306dca29..0b90497d4424 100644
--- a/arch/arm64/lib/copy_from_user.S
+++ b/arch/arm64/lib/copy_from_user.S
@@ -66,7 +66,7 @@
.endm
end .req x5
-ENTRY(__copy_from_user)
+ENTRY(__arch_copy_from_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -75,7 +75,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0 // Nothing to copy
ret
-ENDPROC(__copy_from_user)
+ENDPROC(__arch_copy_from_user)
.section .fixup,"ax"
.align 2
diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S
index 21faae60f988..7a7efe255034 100644
--- a/arch/arm64/lib/copy_to_user.S
+++ b/arch/arm64/lib/copy_to_user.S
@@ -65,7 +65,7 @@
.endm
end .req x5
-ENTRY(__copy_to_user)
+ENTRY(__arch_copy_to_user)
ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(0)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
add end, x0, x2
@@ -74,7 +74,7 @@ ALTERNATIVE("nop", __stringify(SET_PSTATE_PAN(1)), ARM64_ALT_PAN_NOT_UAO, \
CONFIG_ARM64_PAN)
mov x0, #0
ret
-ENDPROC(__copy_to_user)
+ENDPROC(__arch_copy_to_user)
.section .fixup,"ax"
.align 2
--
2.7.4
next prev parent reply other threads:[~2016-07-15 21:47 UTC|newest]
Thread overview: 257+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-15 21:44 [PATCH v3 00/11] mm: Hardened usercopy Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 01/11] mm: Implement stack frame object validation Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 02/11] mm: Hardened usercopy Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-19 1:06 ` Laura Abbott
2016-07-19 1:06 ` [kernel-hardening] " Laura Abbott
2016-07-19 1:06 ` Laura Abbott
2016-07-19 1:06 ` Laura Abbott
2016-07-19 1:06 ` Laura Abbott
2016-07-19 1:06 ` Laura Abbott
2016-07-19 18:48 ` Kees Cook
2016-07-19 18:48 ` [kernel-hardening] " Kees Cook
2016-07-19 18:48 ` Kees Cook
2016-07-19 18:48 ` Kees Cook
2016-07-19 18:48 ` Kees Cook
2016-07-19 18:48 ` Kees Cook
2016-07-19 18:48 ` Kees Cook
2016-07-19 22:00 ` [PATCH] mm: Add is_migrate_cma_page Laura Abbott
2016-07-19 22:00 ` [kernel-hardening] " Laura Abbott
2016-07-19 22:00 ` Laura Abbott
2016-07-19 22:00 ` Laura Abbott
2016-07-19 22:00 ` Laura Abbott
2016-07-19 22:00 ` Laura Abbott
2016-07-19 22:40 ` Kees Cook
2016-07-19 22:40 ` [kernel-hardening] " Kees Cook
2016-07-19 22:40 ` Kees Cook
2016-07-19 22:40 ` Kees Cook
2016-07-19 22:40 ` Kees Cook
2016-07-19 22:40 ` Kees Cook
2016-07-19 22:40 ` Kees Cook
2016-07-20 10:24 ` [PATCH v3 02/11] mm: Hardened usercopy Balbir Singh
2016-07-20 10:24 ` [kernel-hardening] " Balbir Singh
2016-07-20 10:24 ` Balbir Singh
2016-07-20 10:24 ` Balbir Singh
2016-07-20 10:24 ` Balbir Singh
2016-07-20 10:24 ` Balbir Singh
2016-07-20 10:24 ` Balbir Singh
2016-07-20 10:24 ` Balbir Singh
2016-07-20 15:36 ` Laura Abbott
2016-07-20 15:36 ` [kernel-hardening] " Laura Abbott
2016-07-20 15:36 ` Laura Abbott
2016-07-20 15:36 ` Laura Abbott
2016-07-20 15:36 ` Laura Abbott
2016-07-20 15:36 ` Laura Abbott
2016-07-20 15:36 ` Laura Abbott
2016-07-19 1:52 ` Laura Abbott
2016-07-19 1:52 ` [kernel-hardening] " Laura Abbott
2016-07-19 1:52 ` Laura Abbott
2016-07-19 1:52 ` Laura Abbott
2016-07-19 1:52 ` Laura Abbott
2016-07-19 1:52 ` Laura Abbott
2016-07-19 19:12 ` Kees Cook
2016-07-19 19:12 ` [kernel-hardening] " Kees Cook
2016-07-19 19:12 ` Kees Cook
2016-07-19 19:12 ` Kees Cook
2016-07-19 19:12 ` Kees Cook
2016-07-19 19:12 ` Kees Cook
2016-07-19 19:12 ` Kees Cook
2016-07-19 22:55 ` Kees Cook
2016-07-19 22:55 ` [kernel-hardening] " Kees Cook
2016-07-19 22:55 ` Kees Cook
2016-07-19 22:55 ` Kees Cook
2016-07-19 22:55 ` Kees Cook
2016-07-19 22:55 ` Kees Cook
2016-07-19 22:55 ` Kees Cook
2016-07-19 9:21 ` Christian Borntraeger
2016-07-19 9:21 ` [kernel-hardening] " Christian Borntraeger
2016-07-19 9:21 ` Christian Borntraeger
2016-07-19 9:21 ` Christian Borntraeger
2016-07-19 9:21 ` Christian Borntraeger
2016-07-19 9:21 ` Christian Borntraeger
2016-07-19 19:31 ` Kees Cook
2016-07-19 19:31 ` [kernel-hardening] " Kees Cook
2016-07-19 19:31 ` Kees Cook
2016-07-19 19:31 ` Kees Cook
2016-07-19 19:31 ` Kees Cook
2016-07-19 19:31 ` Kees Cook
2016-07-19 19:31 ` Kees Cook
2016-07-19 20:14 ` Christian Borntraeger
2016-07-19 20:14 ` [kernel-hardening] " Christian Borntraeger
2016-07-19 20:14 ` Christian Borntraeger
2016-07-19 20:14 ` Christian Borntraeger
2016-07-19 20:14 ` Christian Borntraeger
2016-07-19 20:14 ` Christian Borntraeger
2016-07-19 20:14 ` Christian Borntraeger
2016-07-19 20:34 ` Kees Cook
2016-07-19 20:34 ` [kernel-hardening] " Kees Cook
2016-07-19 20:34 ` Kees Cook
2016-07-19 20:34 ` Kees Cook
2016-07-19 20:34 ` Kees Cook
2016-07-19 20:34 ` Kees Cook
2016-07-19 20:34 ` Kees Cook
2016-07-19 20:44 ` Christian Borntraeger
2016-07-19 20:44 ` [kernel-hardening] " Christian Borntraeger
2016-07-19 20:44 ` Christian Borntraeger
2016-07-19 20:44 ` Christian Borntraeger
2016-07-19 20:44 ` Christian Borntraeger
2016-07-19 20:44 ` Christian Borntraeger
2016-07-19 20:44 ` Christian Borntraeger
2016-07-21 6:52 ` Michael Ellerman
2016-07-21 6:52 ` Michael Ellerman
2016-07-21 6:52 ` Michael Ellerman
2016-07-21 6:52 ` [kernel-hardening] " Michael Ellerman
2016-07-21 6:52 ` Michael Ellerman
2016-07-21 6:52 ` Michael Ellerman
2016-07-21 6:52 ` Michael Ellerman
2016-07-21 6:52 ` Michael Ellerman
2016-07-21 6:52 ` Michael Ellerman
[not found] ` <5790711f.2350420a.b4287.2cc0SMTPIN_ADDED_BROKEN@mx.google.com>
2016-07-21 18:34 ` Kees Cook
2016-07-21 18:34 ` [kernel-hardening] " Kees Cook
2016-07-21 18:34 ` Kees Cook
2016-07-21 18:34 ` Kees Cook
2016-07-21 18:34 ` Kees Cook
2016-07-21 18:34 ` Kees Cook
2016-07-21 18:34 ` Kees Cook
2016-07-22 17:45 ` Josh Poimboeuf
2016-07-22 17:45 ` [kernel-hardening] " Josh Poimboeuf
2016-07-22 17:45 ` Josh Poimboeuf
2016-07-22 17:45 ` Josh Poimboeuf
2016-07-22 17:45 ` Josh Poimboeuf
2016-07-22 17:45 ` Josh Poimboeuf
2016-07-22 17:45 ` Josh Poimboeuf
2016-07-25 9:27 ` David Laight
2016-07-25 9:27 ` [kernel-hardening] " David Laight
2016-07-25 9:27 ` David Laight
2016-07-25 9:27 ` David Laight
2016-07-25 9:27 ` David Laight
2016-07-25 9:27 ` David Laight
2016-07-25 9:27 ` David Laight
2016-07-26 2:09 ` Michael Ellerman
2016-07-26 2:09 ` [kernel-hardening] " Michael Ellerman
2016-07-26 2:09 ` Michael Ellerman
2016-07-26 2:09 ` Michael Ellerman
2016-07-26 2:09 ` Michael Ellerman
2016-07-26 2:09 ` Michael Ellerman
2016-07-26 2:09 ` Michael Ellerman
2016-07-26 2:09 ` Michael Ellerman
2016-07-26 2:03 ` Michael Ellerman
2016-07-26 2:03 ` [kernel-hardening] " Michael Ellerman
2016-07-26 2:03 ` Michael Ellerman
2016-07-26 2:03 ` Michael Ellerman
2016-07-26 4:46 ` Kees Cook
2016-07-26 4:46 ` [kernel-hardening] " Kees Cook
2016-07-26 4:46 ` Kees Cook
2016-07-26 4:46 ` Kees Cook
2016-07-26 4:46 ` Kees Cook
2016-07-26 4:46 ` Kees Cook
2016-07-26 4:46 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 03/11] x86/uaccess: Enable hardened usercopy Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 04/11] ARM: uaccess: " Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook [this message]
2016-07-15 21:44 ` [kernel-hardening] [PATCH v3 05/11] arm64/uaccess: " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 06/11] ia64/uaccess: " Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 07/11] powerpc/uaccess: " Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 08/11] sparc/uaccess: " Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 09/11] s390/uaccess: " Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 10/11] mm: SLAB hardened usercopy support Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` [PATCH v3 11/11] mm: SLUB " Kees Cook
2016-07-15 21:44 ` [kernel-hardening] " Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-15 21:44 ` Kees Cook
2016-07-18 8:26 ` [PATCH v3 00/11] mm: Hardened usercopy Balbir Singh
2016-07-18 8:26 ` [kernel-hardening] " Balbir Singh
2016-07-18 8:26 ` Balbir Singh
2016-07-18 8:26 ` Balbir Singh
2016-07-18 8:26 ` Balbir Singh
2016-07-18 8:26 ` Balbir Singh
2016-07-18 8:26 ` Balbir Singh
2016-07-20 9:52 ` David Laight
2016-07-20 9:52 ` [kernel-hardening] " David Laight
2016-07-20 9:52 ` David Laight
2016-07-20 9:52 ` David Laight
2016-07-20 9:52 ` David Laight
2016-07-20 9:52 ` David Laight
2016-07-20 9:52 ` David Laight
2016-07-20 15:31 ` Kees Cook
2016-07-20 15:31 ` [kernel-hardening] " Kees Cook
2016-07-20 15:31 ` Kees Cook
2016-07-20 15:31 ` Kees Cook
2016-07-20 15:31 ` Kees Cook
2016-07-20 15:31 ` Kees Cook
2016-07-20 15:31 ` Kees Cook
2016-07-20 16:02 ` David Laight
2016-07-20 16:02 ` [kernel-hardening] " David Laight
2016-07-20 16:02 ` David Laight
2016-07-20 16:02 ` David Laight
2016-07-20 16:02 ` David Laight
2016-07-20 16:02 ` David Laight
2016-07-20 16:02 ` David Laight
2016-07-20 16:22 ` Rik van Riel
2016-07-20 16:22 ` [kernel-hardening] " Rik van Riel
2016-07-20 16:22 ` Rik van Riel
2016-07-20 16:22 ` Rik van Riel
2016-07-20 16:22 ` Rik van Riel
2016-07-20 16:22 ` Rik van Riel
2016-07-20 17:44 ` Kees Cook
2016-07-20 17:44 ` [kernel-hardening] " Kees Cook
2016-07-20 17:44 ` Kees Cook
2016-07-20 17:44 ` Kees Cook
2016-07-20 17:44 ` Kees Cook
2016-07-20 17:44 ` Kees Cook
2016-07-20 17:44 ` Kees Cook
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