From: George-Aurelian Popescu <georgepope@google.com>
To: maz@kernel.org, catalin.marinas@arm.com, will@kernel.org,
masahiroy@kernel.org, michal.lkml@markovi.net
Cc: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org,
linux-kbuild@vger.kernel.org, clang-built-linux@googlegroups.com,
james.morse@arm.com, julien.thierry.kdev@gmail.com,
suzuki.poulose@arm.com, natechancellor@gmail.com,
ndesaulniers@google.com, dbrazdil@google.com, broonie@kernel.org,
maskray@google.com, ascull@google.com, keescook@chromium.org,
akpm@linux-foundation.org, dvyukov@google.com, elver@google.com,
tglx@linutronix.de, arnd@arndb.de,
George Popescu <georgepope@google.com>
Subject: [PATCH 06/14] Fix CFLAGS for UBSAN_BOUNDS on Clang
Date: Mon, 14 Sep 2020 17:27:42 +0000 [thread overview]
Message-ID: <20200914172750.852684-7-georgepope@google.com> (raw)
In-Reply-To: <20200914172750.852684-1-georgepope@google.com>
From: George Popescu <georgepope@google.com>
When the kernel is compiled with Clang, UBSAN_BOUNDS inserts a brk after
the handler call, preventing it from printing any information processed
inside the buffer.
For Clang -fsanitize=bounds expands to -fsanitize=array-bounds and
-fsanitize=local-bounds, and the latter adds a brk after the handler
call
Signed-off-by: George Popescu <georgepope@google.com>
---
scripts/Makefile.ubsan | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan
index 27348029b2b8..3d15ac346c97 100644
--- a/scripts/Makefile.ubsan
+++ b/scripts/Makefile.ubsan
@@ -4,7 +4,14 @@ ifdef CONFIG_UBSAN_ALIGNMENT
endif
ifdef CONFIG_UBSAN_BOUNDS
- CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
+ # For Clang -fsanitize=bounds translates to -fsanitize=array-bounds and
+ # -fsanitize=local-bounds; the latter adds a brk right after the
+ # handler is called.
+ ifdef CONFIG_CC_IS_CLANG
+ CFLAGS_UBSAN += $(call cc-option, -fsanitize=array-bounds)
+ else
+ CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
+ endif
endif
ifdef CONFIG_UBSAN_MISC
--
2.28.0.618.gf4bc123cb7-goog
WARNING: multiple messages have this Message-ID (diff)
From: George-Aurelian Popescu <georgepope@google.com>
To: maz@kernel.org, catalin.marinas@arm.com, will@kernel.org,
masahiroy@kernel.org, michal.lkml@markovi.net
Cc: arnd@arndb.de, elver@google.com, tglx@linutronix.de,
keescook@chromium.org, maskray@google.com,
linux-kbuild@vger.kernel.org, ndesaulniers@google.com,
linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
clang-built-linux@googlegroups.com, broonie@kernel.org,
dvyukov@google.com, natechancellor@gmail.com,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 06/14] Fix CFLAGS for UBSAN_BOUNDS on Clang
Date: Mon, 14 Sep 2020 17:27:42 +0000 [thread overview]
Message-ID: <20200914172750.852684-7-georgepope@google.com> (raw)
In-Reply-To: <20200914172750.852684-1-georgepope@google.com>
From: George Popescu <georgepope@google.com>
When the kernel is compiled with Clang, UBSAN_BOUNDS inserts a brk after
the handler call, preventing it from printing any information processed
inside the buffer.
For Clang -fsanitize=bounds expands to -fsanitize=array-bounds and
-fsanitize=local-bounds, and the latter adds a brk after the handler
call
Signed-off-by: George Popescu <georgepope@google.com>
---
scripts/Makefile.ubsan | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan
index 27348029b2b8..3d15ac346c97 100644
--- a/scripts/Makefile.ubsan
+++ b/scripts/Makefile.ubsan
@@ -4,7 +4,14 @@ ifdef CONFIG_UBSAN_ALIGNMENT
endif
ifdef CONFIG_UBSAN_BOUNDS
- CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
+ # For Clang -fsanitize=bounds translates to -fsanitize=array-bounds and
+ # -fsanitize=local-bounds; the latter adds a brk right after the
+ # handler is called.
+ ifdef CONFIG_CC_IS_CLANG
+ CFLAGS_UBSAN += $(call cc-option, -fsanitize=array-bounds)
+ else
+ CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
+ endif
endif
ifdef CONFIG_UBSAN_MISC
--
2.28.0.618.gf4bc123cb7-goog
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: George-Aurelian Popescu <georgepope@google.com>
To: maz@kernel.org, catalin.marinas@arm.com, will@kernel.org,
masahiroy@kernel.org, michal.lkml@markovi.net
Cc: arnd@arndb.de, elver@google.com, tglx@linutronix.de,
keescook@chromium.org, maskray@google.com,
linux-kbuild@vger.kernel.org, suzuki.poulose@arm.com,
ndesaulniers@google.com, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org, George Popescu <georgepope@google.com>,
clang-built-linux@googlegroups.com, broonie@kernel.org,
james.morse@arm.com, julien.thierry.kdev@gmail.com,
dvyukov@google.com, natechancellor@gmail.com,
dbrazdil@google.com, kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org, ascull@google.com
Subject: [PATCH 06/14] Fix CFLAGS for UBSAN_BOUNDS on Clang
Date: Mon, 14 Sep 2020 17:27:42 +0000 [thread overview]
Message-ID: <20200914172750.852684-7-georgepope@google.com> (raw)
In-Reply-To: <20200914172750.852684-1-georgepope@google.com>
From: George Popescu <georgepope@google.com>
When the kernel is compiled with Clang, UBSAN_BOUNDS inserts a brk after
the handler call, preventing it from printing any information processed
inside the buffer.
For Clang -fsanitize=bounds expands to -fsanitize=array-bounds and
-fsanitize=local-bounds, and the latter adds a brk after the handler
call
Signed-off-by: George Popescu <georgepope@google.com>
---
scripts/Makefile.ubsan | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan
index 27348029b2b8..3d15ac346c97 100644
--- a/scripts/Makefile.ubsan
+++ b/scripts/Makefile.ubsan
@@ -4,7 +4,14 @@ ifdef CONFIG_UBSAN_ALIGNMENT
endif
ifdef CONFIG_UBSAN_BOUNDS
- CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
+ # For Clang -fsanitize=bounds translates to -fsanitize=array-bounds and
+ # -fsanitize=local-bounds; the latter adds a brk right after the
+ # handler is called.
+ ifdef CONFIG_CC_IS_CLANG
+ CFLAGS_UBSAN += $(call cc-option, -fsanitize=array-bounds)
+ else
+ CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
+ endif
endif
ifdef CONFIG_UBSAN_MISC
--
2.28.0.618.gf4bc123cb7-goog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-09-14 17:29 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 17:27 [PATCH 00/14] UBSan Enablement for hyp/nVHE code George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 01/14] KVM: arm64: Enable UBSan instrumentation in nVHE hyp code George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 02/14] KVM: arm64: Define a macro for storing a value inside a per_cpu variable George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 03/14] KVM: arm64: Add support for creating and checking a logging buffer inside hyp/nVHE George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-10-01 10:07 ` Andrew Scull
2020-10-01 10:07 ` Andrew Scull
2020-10-01 10:07 ` Andrew Scull
2020-09-14 17:27 ` [PATCH 04/14] KVM: arm64: Add support for buffer usage George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 05/14] KVM: arm64: Define a buffer that can pass UBSan data from hyp/nVHE to kernel George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-15 13:25 ` George Popescu
2020-09-15 13:25 ` George Popescu
2020-09-15 13:25 ` George Popescu
2020-10-01 10:51 ` Andrew Scull
2020-10-01 10:51 ` Andrew Scull
2020-10-01 10:51 ` Andrew Scull
2020-09-14 17:27 ` George-Aurelian Popescu [this message]
2020-09-14 17:27 ` [PATCH 06/14] Fix CFLAGS for UBSAN_BOUNDS on Clang George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 21:17 ` Nick Desaulniers
2020-09-14 21:17 ` Nick Desaulniers
2020-09-14 21:17 ` Nick Desaulniers
2020-09-14 22:13 ` Kees Cook
2020-09-14 22:13 ` Kees Cook
2020-09-14 22:13 ` Kees Cook
2020-09-15 10:24 ` George Popescu
2020-09-15 10:24 ` George Popescu
2020-09-15 10:24 ` George Popescu
2020-09-15 11:18 ` Marco Elver
2020-09-15 11:18 ` Marco Elver
2020-09-15 11:18 ` Marco Elver
2020-09-15 12:01 ` George Popescu
2020-09-15 12:01 ` George Popescu
2020-09-15 12:01 ` George Popescu
2020-09-15 17:32 ` Marco Elver
2020-09-15 17:32 ` Marco Elver
2020-09-15 17:32 ` Marco Elver
2020-09-16 7:40 ` George Popescu
2020-09-16 7:40 ` George Popescu
2020-09-16 7:40 ` George Popescu
2020-09-16 8:32 ` Marco Elver
2020-09-16 8:32 ` Marco Elver
2020-09-16 8:32 ` Marco Elver
2020-09-16 12:14 ` George Popescu
2020-09-16 12:14 ` George Popescu
2020-09-16 13:40 ` Marco Elver
2020-09-16 13:40 ` Marco Elver
2020-09-16 13:40 ` Marco Elver
2020-09-17 6:37 ` Marco Elver
2020-09-17 6:37 ` Marco Elver
2020-09-17 6:37 ` Marco Elver
2020-09-17 11:35 ` George Popescu
2020-09-17 11:35 ` George Popescu
2020-09-17 11:35 ` George Popescu
2020-09-17 22:21 ` Kees Cook
2020-09-17 22:21 ` Kees Cook
2020-09-17 22:21 ` Kees Cook
2020-09-17 22:17 ` Kees Cook
2020-09-17 22:17 ` Kees Cook
2020-09-17 22:17 ` Kees Cook
2020-09-14 17:27 ` [PATCH 07/14] KVM: arm64: Enable UBSAN_BOUNDS for the both the kernel and hyp/nVHE George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-10-01 10:57 ` Andrew Scull
2020-10-01 10:57 ` Andrew Scull
2020-10-01 10:57 ` Andrew Scull
2020-09-14 17:27 ` [PATCH 08/14] KVM: arm64: Enable UBsan check for unreachable code inside hyp/nVHE code George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 09/14] KVM: arm64: Enable shift out of bounds undefined behaviour check for hyp/nVHE George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 10/14] KVM: arm64: __ubsan_handle_load_invalid_value hyp/nVHE implementation George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 11/14] KVM: arm64: Detect type mismatch undefined behaviour from hyp/nVHE code George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 12/14] KVM: arm64: Detect arithmetic overflow is inside hyp/nVHE George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 13/14] KVM: arm64: Enable the CONFIG_TEST UBSan for PKVM George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` [PATCH 14/14] DO NOT MERGE: Enable configs to test the patch series George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
2020-09-14 17:27 ` George-Aurelian Popescu
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