From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: "Alexander Viro" <viro@zeniv.linux.org.uk>,
"Paul Elliott" <paul.elliott@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Amit Kachhap" <amit.kachhap@arm.com>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>,
"Marc Zyngier" <maz@kernel.org>,
"Eugene Syromiatnikov" <esyr@redhat.com>,
"Szabolcs Nagy" <szabolcs.nagy@arm.com>,
"H . J . Lu " <hjl.tools@gmail.com>,
"Andrew Jones" <drjones@redhat.com>,
"Kees Cook" <keescook@chromium.org>,
"Arnd Bergmann" <arnd@arndb.de>, "Jann Horn" <jannh@google.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Kristina Martšenko" <kristina.martsenko@arm.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Florian Weimer" <fweimer@redhat.com>,
"Sudakshina Das" <sudi.das@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-fsdevel@vger.kernel.org, "Mark Brown" <broonie@kernel.org>
Subject: [PATCH v9 00/13] arm64: Branch Target Identification support
Date: Wed, 11 Mar 2020 19:25:55 +0000 [thread overview]
Message-ID: <20200311192608.40095-1-broonie@kernel.org> (raw)
This patch series implements support for ARMv8.5-A Branch Target
Identification (BTI), which is a control flow integrity protection
feature introduced as part of the ARMv8.5-A extensions.
Changes:
v9:
- Move Kconfig addition to final patch in series.
- Add patch from Daniel Kiss adding BTI information to smaps, this has
a trivial conflict with a .rst conversion in -next.
v8:
- Remove a redundant IS_ENABLED(CONFIG_ARM64_BTI) check.
v7:
- Rebase onto v5.6-rc3.
- Move comment about keeping NT_GNU_PROPERTY_TYPE_0 internal into first
patch.
- Add an explicit check for system_supports_bti() when parsing BTI ELF
property for improved robustness.
v6:
- Rebase onto v5.6-rc1.
- Fix typos s/BYTPE/BTYPE/ in commit log for "arm64: BTI: Decode BYTPE
bits when printing PSTATE".
v5:
- Changed a bunch of -EIO to -ENOEXEC in the ELF parsing code.
- Move PSR_BTYPE defines to UAPI.
- Use compat_user_mode() rather than open coding.
- Fix a typo s/BYTPE/BTYPE/ in syscall.c
v4:
- Dropped patch fixing existing documentation as it has already been merged.
- Convert WARN_ON() to WARN_ON_ONCE() in "ELF: Add ELF program property
parsing support".
- Added display of guarded pages to ptdump.
- Updated for conversion of exception handling from assembler to C.
Notes:
* GCC 9 can compile backwards-compatible BTI-enabled code with
-mbranch-protection=bti or -mbranch-protection=standard.
* Binutils 2.33 and later support the new ELF note.
Creation of a BTI-enabled binary requires _everything_ linked in to
be BTI-enabled. For now ld --force-bti can be used to override this,
but some things may break until the required C library support is in
place.
There is no straightforward way to mark a .s file as BTI-enabled:
scraping the output from gcc -S works as a quick hack for now.
readelf -n can be used to examing the program properties in an ELF
file.
* Runtime mmap() and mprotect() can be used to enable BTI on a
page-by-page basis using the new PROT_BTI, but the code in the
affected pages still needs to be written or compiled to contain the
appopriate BTI landing pads.
Daniel Kiss (1):
mm: smaps: Report arm64 guarded pages in smaps
Dave Martin (11):
ELF: UAPI and Kconfig additions for ELF program properties
ELF: Add ELF program property parsing support
arm64: Basic Branch Target Identification support
elf: Allow arch to tweak initial mmap prot flags
arm64: elf: Enable BTI at exec based on ELF program properties
arm64: BTI: Decode BYTPE bits when printing PSTATE
arm64: unify native/compat instruction skipping
arm64: traps: Shuffle code to eliminate forward declarations
arm64: BTI: Reset BTYPE when skipping emulated instructions
KVM: arm64: BTI: Reset BTYPE when skipping emulated instructions
arm64: BTI: Add Kconfig entry for userspace BTI
Mark Brown (1):
arm64: mm: Display guarded pages in ptdump
Documentation/arm64/cpu-feature-registers.rst | 2 +
Documentation/arm64/elf_hwcaps.rst | 5 +
Documentation/filesystems/proc.txt | 1 +
arch/arm64/Kconfig | 25 +++
arch/arm64/include/asm/cpucaps.h | 3 +-
arch/arm64/include/asm/cpufeature.h | 6 +
arch/arm64/include/asm/elf.h | 50 ++++++
arch/arm64/include/asm/esr.h | 2 +-
arch/arm64/include/asm/exception.h | 1 +
arch/arm64/include/asm/hwcap.h | 1 +
arch/arm64/include/asm/kvm_emulate.h | 6 +-
arch/arm64/include/asm/mman.h | 37 +++++
arch/arm64/include/asm/pgtable-hwdef.h | 1 +
arch/arm64/include/asm/pgtable.h | 2 +-
arch/arm64/include/asm/ptrace.h | 1 +
arch/arm64/include/asm/sysreg.h | 4 +
arch/arm64/include/uapi/asm/hwcap.h | 1 +
arch/arm64/include/uapi/asm/mman.h | 9 ++
arch/arm64/include/uapi/asm/ptrace.h | 9 ++
arch/arm64/kernel/cpufeature.c | 33 ++++
arch/arm64/kernel/cpuinfo.c | 1 +
arch/arm64/kernel/entry-common.c | 11 ++
arch/arm64/kernel/process.c | 36 ++++-
arch/arm64/kernel/ptrace.c | 2 +-
arch/arm64/kernel/signal.c | 16 ++
arch/arm64/kernel/syscall.c | 18 +++
arch/arm64/kernel/traps.c | 127 +++++++--------
arch/arm64/mm/dump.c | 5 +
fs/Kconfig.binfmt | 6 +
fs/binfmt_elf.c | 145 +++++++++++++++++-
fs/compat_binfmt_elf.c | 4 +
fs/proc/task_mmu.c | 3 +
include/linux/elf.h | 43 ++++++
include/linux/mm.h | 3 +
include/uapi/linux/elf.h | 11 ++
35 files changed, 555 insertions(+), 75 deletions(-)
create mode 100644 arch/arm64/include/asm/mman.h
create mode 100644 arch/arm64/include/uapi/asm/mman.h
base-commit: f8788d86ab28f61f7b46eb6be375f8a726783636
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: "Alexander Viro" <viro@zeniv.linux.org.uk>,
"Paul Elliott" <paul.elliott@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Amit Kachhap" <amit.kachhap@arm.com>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>,
"Marc Zyngier" <maz@kernel.org>,
"Eugene Syromiatnikov" <esyr@redhat.com>,
"Szabolcs Nagy" <szabolcs.nagy@arm.com>,
"H . J . Lu " <hjl.tools@gmail.com>,
"Andrew Jones" <drjones@redhat.com>,
"Kees Cook" <keescook@chromium.org>,
"Arnd Bergmann" <arnd@arndb.de>, "Jann Horn" <jannh@google.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Kristina Martšenko" <kristina.martsenko@arm.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Florian Weimer" <fweimer@redhat.com>,
"Sudakshina Das" <sudi.das@arm.com>
Subject: [PATCH v9 00/13] arm64: Branch Target Identification support
Date: Wed, 11 Mar 2020 19:25:55 +0000 [thread overview]
Message-ID: <20200311192608.40095-1-broonie@kernel.org> (raw)
This patch series implements support for ARMv8.5-A Branch Target
Identification (BTI), which is a control flow integrity protection
feature introduced as part of the ARMv8.5-A extensions.
Changes:
v9:
- Move Kconfig addition to final patch in series.
- Add patch from Daniel Kiss adding BTI information to smaps, this has
a trivial conflict with a .rst conversion in -next.
v8:
- Remove a redundant IS_ENABLED(CONFIG_ARM64_BTI) check.
v7:
- Rebase onto v5.6-rc3.
- Move comment about keeping NT_GNU_PROPERTY_TYPE_0 internal into first
patch.
- Add an explicit check for system_supports_bti() when parsing BTI ELF
property for improved robustness.
v6:
- Rebase onto v5.6-rc1.
- Fix typos s/BYTPE/BTYPE/ in commit log for "arm64: BTI: Decode BYTPE
bits when printing PSTATE".
v5:
- Changed a bunch of -EIO to -ENOEXEC in the ELF parsing code.
- Move PSR_BTYPE defines to UAPI.
- Use compat_user_mode() rather than open coding.
- Fix a typo s/BYTPE/BTYPE/ in syscall.c
v4:
- Dropped patch fixing existing documentation as it has already been merged.
- Convert WARN_ON() to WARN_ON_ONCE() in "ELF: Add ELF program property
parsing support".
- Added display of guarded pages to ptdump.
- Updated for conversion of exception handling from assembler to C.
Notes:
* GCC 9 can compile backwards-compatible BTI-enabled code with
-mbranch-protection=bti or -mbranch-protection=standard.
* Binutils 2.33 and later support the new ELF note.
Creation of a BTI-enabled binary requires _everything_ linked in to
be BTI-enabled. For now ld --force-bti can be used to override this,
but some things may break until the required C library support is in
place.
There is no straightforward way to mark a .s file as BTI-enabled:
scraping the output from gcc -S works as a quick hack for now.
readelf -n can be used to examing the program properties in an ELF
file.
* Runtime mmap() and mprotect() can be used to enable BTI on a
page-by-page basis using the new PROT_BTI, but the code in the
affected pages still needs to be written or compiled to contain the
appopriate BTI landing pads.
Daniel Kiss (1):
mm: smaps: Report arm64 guarded pages in smaps
Dave Martin (11):
ELF: UAPI and Kconfig additions for ELF program properties
ELF: Add ELF program property parsing support
arm64: Basic Branch Target Identification support
elf: Allow arch to tweak initial mmap prot flags
arm64: elf: Enable BTI at exec based on ELF program properties
arm64: BTI: Decode BYTPE bits when printing PSTATE
arm64: unify native/compat instruction skipping
arm64: traps: Shuffle code to eliminate forward declarations
arm64: BTI: Reset BTYPE when skipping emulated instructions
KVM: arm64: BTI: Reset BTYPE when skipping emulated instructions
arm64: BTI: Add Kconfig entry for userspace BTI
Mark Brown (1):
arm64: mm: Display guarded pages in ptdump
Documentation/arm64/cpu-feature-registers.rst | 2 +
Documentation/arm64/elf_hwcaps.rst | 5 +
Documentation/filesystems/proc.txt | 1 +
arch/arm64/Kconfig | 25 +++
arch/arm64/include/asm/cpucaps.h | 3 +-
arch/arm64/include/asm/cpufeature.h | 6 +
arch/arm64/include/asm/elf.h | 50 ++++++
arch/arm64/include/asm/esr.h | 2 +-
arch/arm64/include/asm/exception.h | 1 +
arch/arm64/include/asm/hwcap.h | 1 +
arch/arm64/include/asm/kvm_emulate.h | 6 +-
arch/arm64/include/asm/mman.h | 37 +++++
arch/arm64/include/asm/pgtable-hwdef.h | 1 +
arch/arm64/include/asm/pgtable.h | 2 +-
arch/arm64/include/asm/ptrace.h | 1 +
arch/arm64/include/asm/sysreg.h | 4 +
arch/arm64/include/uapi/asm/hwcap.h | 1 +
arch/arm64/include/uapi/asm/mman.h | 9 ++
arch/arm64/include/uapi/asm/ptrace.h | 9 ++
arch/arm64/kernel/cpufeature.c | 33 ++++
arch/arm64/kernel/cpuinfo.c | 1 +
arch/arm64/kernel/entry-common.c | 11 ++
arch/arm64/kernel/process.c | 36 ++++-
arch/arm64/kernel/ptrace.c | 2 +-
arch/arm64/kernel/signal.c | 16 ++
arch/arm64/kernel/syscall.c | 18 +++
arch/arm64/kernel/traps.c | 127 +++++++--------
arch/arm64/mm/dump.c | 5 +
fs/Kconfig.binfmt | 6 +
fs/binfmt_elf.c | 145 +++++++++++++++++-
fs/compat_binfmt_elf.c | 4 +
fs/proc/task_mmu.c | 3 +
include/linux/elf.h | 43 ++++++
include/linux/mm.h | 3 +
include/uapi/linux/elf.h | 11 ++
35 files changed, 555 insertions(+), 75 deletions(-)
create mode 100644 arch/arm64/include/asm/mman.h
create mode 100644 arch/arm64/include/uapi/asm/mman.h
base-commit: f8788d86ab28f61f7b46eb6be375f8a726783636
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: "Paul Elliott" <paul.elliott@arm.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Andrew Jones" <drjones@redhat.com>,
"Amit Kachhap" <amit.kachhap@arm.com>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>,
linux-arch@vger.kernel.org, "Marc Zyngier" <maz@kernel.org>,
"Eugene Syromiatnikov" <esyr@redhat.com>,
"Szabolcs Nagy" <szabolcs.nagy@arm.com>,
"H . J . Lu " <hjl.tools@gmail.com>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Kees Cook" <keescook@chromium.org>,
"Arnd Bergmann" <arnd@arndb.de>, "Jann Horn" <jannh@google.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Kristina Martšenko" <kristina.martsenko@arm.com>,
"Mark Brown" <broonie@kernel.org>,
"Alexander Viro" <viro@zeniv.linux.org.uk>,
"Thomas Gleixner" <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
"Florian Weimer" <fweimer@redhat.com>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
"Sudakshina Das" <sudi.das@arm.com>
Subject: [PATCH v9 00/13] arm64: Branch Target Identification support
Date: Wed, 11 Mar 2020 19:25:55 +0000 [thread overview]
Message-ID: <20200311192608.40095-1-broonie@kernel.org> (raw)
This patch series implements support for ARMv8.5-A Branch Target
Identification (BTI), which is a control flow integrity protection
feature introduced as part of the ARMv8.5-A extensions.
Changes:
v9:
- Move Kconfig addition to final patch in series.
- Add patch from Daniel Kiss adding BTI information to smaps, this has
a trivial conflict with a .rst conversion in -next.
v8:
- Remove a redundant IS_ENABLED(CONFIG_ARM64_BTI) check.
v7:
- Rebase onto v5.6-rc3.
- Move comment about keeping NT_GNU_PROPERTY_TYPE_0 internal into first
patch.
- Add an explicit check for system_supports_bti() when parsing BTI ELF
property for improved robustness.
v6:
- Rebase onto v5.6-rc1.
- Fix typos s/BYTPE/BTYPE/ in commit log for "arm64: BTI: Decode BYTPE
bits when printing PSTATE".
v5:
- Changed a bunch of -EIO to -ENOEXEC in the ELF parsing code.
- Move PSR_BTYPE defines to UAPI.
- Use compat_user_mode() rather than open coding.
- Fix a typo s/BYTPE/BTYPE/ in syscall.c
v4:
- Dropped patch fixing existing documentation as it has already been merged.
- Convert WARN_ON() to WARN_ON_ONCE() in "ELF: Add ELF program property
parsing support".
- Added display of guarded pages to ptdump.
- Updated for conversion of exception handling from assembler to C.
Notes:
* GCC 9 can compile backwards-compatible BTI-enabled code with
-mbranch-protection=bti or -mbranch-protection=standard.
* Binutils 2.33 and later support the new ELF note.
Creation of a BTI-enabled binary requires _everything_ linked in to
be BTI-enabled. For now ld --force-bti can be used to override this,
but some things may break until the required C library support is in
place.
There is no straightforward way to mark a .s file as BTI-enabled:
scraping the output from gcc -S works as a quick hack for now.
readelf -n can be used to examing the program properties in an ELF
file.
* Runtime mmap() and mprotect() can be used to enable BTI on a
page-by-page basis using the new PROT_BTI, but the code in the
affected pages still needs to be written or compiled to contain the
appopriate BTI landing pads.
Daniel Kiss (1):
mm: smaps: Report arm64 guarded pages in smaps
Dave Martin (11):
ELF: UAPI and Kconfig additions for ELF program properties
ELF: Add ELF program property parsing support
arm64: Basic Branch Target Identification support
elf: Allow arch to tweak initial mmap prot flags
arm64: elf: Enable BTI at exec based on ELF program properties
arm64: BTI: Decode BYTPE bits when printing PSTATE
arm64: unify native/compat instruction skipping
arm64: traps: Shuffle code to eliminate forward declarations
arm64: BTI: Reset BTYPE when skipping emulated instructions
KVM: arm64: BTI: Reset BTYPE when skipping emulated instructions
arm64: BTI: Add Kconfig entry for userspace BTI
Mark Brown (1):
arm64: mm: Display guarded pages in ptdump
Documentation/arm64/cpu-feature-registers.rst | 2 +
Documentation/arm64/elf_hwcaps.rst | 5 +
Documentation/filesystems/proc.txt | 1 +
arch/arm64/Kconfig | 25 +++
arch/arm64/include/asm/cpucaps.h | 3 +-
arch/arm64/include/asm/cpufeature.h | 6 +
arch/arm64/include/asm/elf.h | 50 ++++++
arch/arm64/include/asm/esr.h | 2 +-
arch/arm64/include/asm/exception.h | 1 +
arch/arm64/include/asm/hwcap.h | 1 +
arch/arm64/include/asm/kvm_emulate.h | 6 +-
arch/arm64/include/asm/mman.h | 37 +++++
arch/arm64/include/asm/pgtable-hwdef.h | 1 +
arch/arm64/include/asm/pgtable.h | 2 +-
arch/arm64/include/asm/ptrace.h | 1 +
arch/arm64/include/asm/sysreg.h | 4 +
arch/arm64/include/uapi/asm/hwcap.h | 1 +
arch/arm64/include/uapi/asm/mman.h | 9 ++
arch/arm64/include/uapi/asm/ptrace.h | 9 ++
arch/arm64/kernel/cpufeature.c | 33 ++++
arch/arm64/kernel/cpuinfo.c | 1 +
arch/arm64/kernel/entry-common.c | 11 ++
arch/arm64/kernel/process.c | 36 ++++-
arch/arm64/kernel/ptrace.c | 2 +-
arch/arm64/kernel/signal.c | 16 ++
arch/arm64/kernel/syscall.c | 18 +++
arch/arm64/kernel/traps.c | 127 +++++++--------
arch/arm64/mm/dump.c | 5 +
fs/Kconfig.binfmt | 6 +
fs/binfmt_elf.c | 145 +++++++++++++++++-
fs/compat_binfmt_elf.c | 4 +
fs/proc/task_mmu.c | 3 +
include/linux/elf.h | 43 ++++++
include/linux/mm.h | 3 +
include/uapi/linux/elf.h | 11 ++
35 files changed, 555 insertions(+), 75 deletions(-)
create mode 100644 arch/arm64/include/asm/mman.h
create mode 100644 arch/arm64/include/uapi/asm/mman.h
base-commit: f8788d86ab28f61f7b46eb6be375f8a726783636
--
2.20.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2020-03-11 19:33 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 19:25 Mark Brown [this message]
2020-03-11 19:25 ` [PATCH v9 00/13] arm64: Branch Target Identification support Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-11 19:25 ` [PATCH v9 01/13] ELF: UAPI and Kconfig additions for ELF program properties Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-11 19:25 ` [PATCH v9 02/13] ELF: Add ELF program property parsing support Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-12 23:59 ` Kees Cook
2020-03-12 23:59 ` Kees Cook
2020-03-12 23:59 ` Kees Cook
2020-03-13 11:55 ` Mark Brown
2020-03-13 11:55 ` Mark Brown
2020-03-13 11:55 ` Mark Brown
2020-03-11 19:25 ` [PATCH v9 03/13] arm64: Basic Branch Target Identification support Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-11 19:25 ` [PATCH v9 04/13] elf: Allow arch to tweak initial mmap prot flags Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-11 19:25 ` Mark Brown
2020-03-11 19:26 ` [PATCH v9 05/13] arm64: elf: Enable BTI at exec based on ELF program properties Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` [PATCH v9 06/13] arm64: BTI: Decode BYTPE bits when printing PSTATE Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` [PATCH v9 07/13] arm64: unify native/compat instruction skipping Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` [PATCH v9 08/13] arm64: traps: Shuffle code to eliminate forward declarations Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-14 11:18 ` Catalin Marinas
2020-03-14 11:18 ` Catalin Marinas
2020-03-14 11:18 ` Catalin Marinas
2020-03-11 19:26 ` [PATCH v9 09/13] arm64: BTI: Reset BTYPE when skipping emulated instructions Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` [PATCH v9 10/13] KVM: " Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` [PATCH v9 11/13] arm64: mm: Display guarded pages in ptdump Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` [PATCH v9 12/13] mm: smaps: Report arm64 guarded pages in smaps Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-13 0:00 ` Kees Cook
2020-03-13 0:00 ` Kees Cook
2020-03-13 0:00 ` Kees Cook
2020-03-11 19:26 ` [PATCH v9 13/13] arm64: BTI: Add Kconfig entry for userspace BTI Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-11 19:26 ` Mark Brown
2020-03-13 0:01 ` Kees Cook
2020-03-13 0:01 ` Kees Cook
2020-03-13 0:01 ` Kees Cook
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