From: kernel test robot <lkp@intel.com>
To: Quentin Perret <qperret@google.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>
Subject: [kvmarm:fixes 18/18] arch/arm64/kvm/hyp/nvhe/mem_protect.c:1086:9: warning: variable 'ret' is uninitialized when used here
Date: Mon, 10 Feb 2025 09:39:04 +0800 [thread overview]
Message-ID: <202502100911.8c9DbtKD-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git fixes
head: eabc7aaef7a553b64bf6e631ce04526af6c8d104
commit: eabc7aaef7a553b64bf6e631ce04526af6c8d104 [18/18] KVM: arm64: Simplify np-guest hypercalls
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20250210/202502100911.8c9DbtKD-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250210/202502100911.8c9DbtKD-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502100911.8c9DbtKD-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> arch/arm64/kvm/hyp/nvhe/mem_protect.c:1086:9: warning: variable 'ret' is uninitialized when used here [-Wuninitialized]
1086 | return ret;
| ^~~
arch/arm64/kvm/hyp/nvhe/mem_protect.c:1076:9: note: initialize the variable 'ret' to silence this warning
1076 | int ret;
| ^
| = 0
1 warning generated.
vim +/ret +1086 arch/arm64/kvm/hyp/nvhe/mem_protect.c
76f0b18b3db578 Quentin Perret 2024-12-18 1071
76f0b18b3db578 Quentin Perret 2024-12-18 1072 int __pkvm_host_mkyoung_guest(u64 gfn, struct pkvm_hyp_vcpu *vcpu)
76f0b18b3db578 Quentin Perret 2024-12-18 1073 {
76f0b18b3db578 Quentin Perret 2024-12-18 1074 struct pkvm_hyp_vm *vm = pkvm_hyp_vcpu_to_hyp_vm(vcpu);
76f0b18b3db578 Quentin Perret 2024-12-18 1075 u64 ipa = hyp_pfn_to_phys(gfn);
76f0b18b3db578 Quentin Perret 2024-12-18 1076 int ret;
76f0b18b3db578 Quentin Perret 2024-12-18 1077
eabc7aaef7a553 Quentin Perret 2025-02-07 1078 if (pkvm_hyp_vm_is_protected(vm))
eabc7aaef7a553 Quentin Perret 2025-02-07 1079 return -EPERM;
76f0b18b3db578 Quentin Perret 2024-12-18 1080
eabc7aaef7a553 Quentin Perret 2025-02-07 1081 assert_host_shared_guest(vm, ipa);
eabc7aaef7a553 Quentin Perret 2025-02-07 1082 guest_lock_component(vm);
76f0b18b3db578 Quentin Perret 2024-12-18 1083 kvm_pgtable_stage2_mkyoung(&vm->pgt, ipa, 0);
76f0b18b3db578 Quentin Perret 2024-12-18 1084 guest_unlock_component(vm);
76f0b18b3db578 Quentin Perret 2024-12-18 1085
76f0b18b3db578 Quentin Perret 2024-12-18 @1086 return ret;
:::::: The code at line 1086 was first introduced by commit
:::::: 76f0b18b3db57868fb0cabe691201aad3085b712 KVM: arm64: Introduce __pkvm_host_mkyoung_guest()
:::::: TO: Quentin Perret <qperret@google.com>
:::::: CC: Marc Zyngier <maz@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2025-02-10 1:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-10 1:39 kernel test robot [this message]
2025-02-10 9:21 ` [kvmarm:fixes 18/18] arch/arm64/kvm/hyp/nvhe/mem_protect.c:1086:9: warning: variable 'ret' is uninitialized when used here Marc Zyngier
2025-02-10 9:44 ` Quentin Perret
2025-02-10 10:37 ` Marc Zyngier
2025-02-13 7:25 ` Philip Li
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