From: kernel test robot <lkp@intel.com>
To: Kalesh Singh <kaleshsingh@google.com>
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, will@kernel.org,
maz@kernel.org, qperret@google.com, tabba@google.com,
surenb@google.com, kernel-team@android.com,
Kalesh Singh <kaleshsingh@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
James Morse <james.morse@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Ard Biesheuvel <ardb@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Pasha Tatashin <pasha.tatashin@soleen.com>,
Joey Gouly <joey.gouly@arm.com>,
Peter Collingbourne <pcc@google.com>,
Andrew Scull <ascull@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Zenghui Yu <yuzenghui@huawei.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v2 6/9] KVM: arm64: Detect and handle hypervisor stack overflows
Date: Wed, 23 Feb 2022 17:05:18 +0800 [thread overview]
Message-ID: <202202231727.L621fVgD-lkp@intel.com> (raw)
In-Reply-To: <20220222165212.2005066-7-kaleshsingh@google.com>
Hi Kalesh,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on cfb92440ee71adcc2105b0890bb01ac3cddb8507]
url: https://github.com/0day-ci/linux/commits/Kalesh-Singh/KVM-arm64-Hypervisor-stack-enhancements/20220223-010522
base: cfb92440ee71adcc2105b0890bb01ac3cddb8507
config: arm64-randconfig-r011-20220221 (https://download.01.org/0day-ci/archive/20220223/202202231727.L621fVgD-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/0day-ci/linux/commit/7fe99fd40f7c4b2973218045ca5b9c9160524db1
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Kalesh-Singh/KVM-arm64-Hypervisor-stack-enhancements/20220223-010522
git checkout 7fe99fd40f7c4b2973218045ca5b9c9160524db1
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:200:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_FP_ASIMD] = kvm_hyp_handle_fpsimd,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:196:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:201:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_IABT_LOW] = kvm_hyp_handle_iabt_low,
^~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:196:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:202:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_DABT_LOW] = kvm_hyp_handle_dabt_low,
^~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:196:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:203:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_PAC] = kvm_hyp_handle_ptrauth,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:196:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:208:24: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SYS64] = kvm_handle_pvm_sys64,
^~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:207:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:209:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SVE] = kvm_handle_pvm_restricted,
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:207:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:210:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_FP_ASIMD] = kvm_handle_pvm_fpsimd,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:207:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:211:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_IABT_LOW] = kvm_hyp_handle_iabt_low,
^~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:207:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:212:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_DABT_LOW] = kvm_hyp_handle_dabt_low,
^~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:207:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:213:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_PAC] = kvm_hyp_handle_ptrauth,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:207:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/nvhe/switch.c:350:17: warning: no previous prototype for function 'hyp_panic' [-Wmissing-prototypes]
void __noreturn hyp_panic(void)
^
arch/arm64/kvm/hyp/nvhe/switch.c:350:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __noreturn hyp_panic(void)
^
static
>> arch/arm64/kvm/hyp/nvhe/switch.c:372:17: warning: no previous prototype for function 'hyp_panic_bad_stack' [-Wmissing-prototypes]
void __noreturn hyp_panic_bad_stack(void)
^
arch/arm64/kvm/hyp/nvhe/switch.c:372:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __noreturn hyp_panic_bad_stack(void)
^
static
arch/arm64/kvm/hyp/nvhe/switch.c:377:17: warning: no previous prototype for function 'kvm_unexpected_el2_exception' [-Wmissing-prototypes]
asmlinkage void kvm_unexpected_el2_exception(void)
^
arch/arm64/kvm/hyp/nvhe/switch.c:377:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void kvm_unexpected_el2_exception(void)
^
static
16 warnings generated.
vim +/hyp_panic_bad_stack +372 arch/arm64/kvm/hyp/nvhe/switch.c
371
> 372 void __noreturn hyp_panic_bad_stack(void)
373 {
374 hyp_panic();
375 }
376
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
next prev parent reply other threads:[~2022-02-23 9:06 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-22 16:51 [PATCH v2 0/9] KVM: arm64: Hypervisor stack enhancements Kalesh Singh
2022-02-22 16:51 ` [PATCH v2 1/9] KVM: arm64: Introduce hyp_alloc_private_va_range() Kalesh Singh
2022-02-22 18:53 ` Mark Rutland
2022-02-22 16:51 ` [PATCH v2 2/9] KVM: arm64: Introduce pkvm_alloc_private_va_range() Kalesh Singh
2022-02-22 16:51 ` [PATCH v2 3/9] KVM: arm64: Add guard pages for KVM nVHE hypervisor stack Kalesh Singh
2022-02-22 16:51 ` [PATCH v2 4/9] KVM: arm64: Add guard pages for pKVM (protected nVHE) " Kalesh Singh
2022-02-22 18:55 ` Mark Rutland
2022-02-22 20:30 ` Kalesh Singh
2022-02-22 16:51 ` [PATCH v2 5/9] arm64: asm: Introduce test_sp_overflow macro Kalesh Singh
2022-02-22 18:32 ` Mark Rutland
2022-02-22 20:20 ` Kalesh Singh
2022-02-22 16:51 ` [PATCH v2 6/9] KVM: arm64: Detect and handle hypervisor stack overflows Kalesh Singh
2022-02-23 2:04 ` kernel test robot
2022-02-23 9:05 ` kernel test robot [this message]
2022-02-23 9:16 ` Marc Zyngier
2022-02-23 12:34 ` [kbuild-all] " Philip Li
2022-02-23 12:54 ` Marc Zyngier
2022-02-23 12:56 ` Ard Biesheuvel
2022-02-24 10:39 ` Marc Zyngier
2022-02-25 2:12 ` Chen, Rong A
2022-02-25 3:11 ` Kalesh Singh
2022-02-25 15:31 ` Marc Zyngier
2022-02-25 15:38 ` Ard Biesheuvel
2022-02-22 16:51 ` [PATCH v2 7/9] KVM: arm64: Add hypervisor overflow stack Kalesh Singh
2022-02-22 16:51 ` [PATCH v2 8/9] KVM: arm64: Unwind and dump nVHE HYP stacktrace Kalesh Singh
2022-02-22 16:51 ` [PATCH v2 9/9] KVM: arm64: Symbolize the nVHE HYP backtrace Kalesh Singh
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