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| author | Like Xu <likexu@tencent.com> | 2023-06-25 10:34:38 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-07-31 23:55:26 +0300 |
| commit | 1d6664fadda3e028b8220ba1ba487a928e801825 (patch) | |
| tree | 197f81e5a4d6b4f1a6e41618c7de9542ecb13ac6 | |
| parent | fdf0eaf11452d72945af31804e2a1048ee1b574c (diff) | |
| download | linux-1d6664fadda3e028b8220ba1ba487a928e801825.tar.xz | |
KVM: x86: Use sysfs_emit() instead of sprintf()
Use sysfs_emit() instead of the sprintf() for sysfs entries. sysfs_emit()
knows the maximum of the temporary buffer used for outputting sysfs
content and avoids overrunning the buffer length.
Signed-off-by: Like Xu <likexu@tencent.com>
Link: https://lore.kernel.org/r/20230625073438.57427-1-likexu@tencent.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index ec169f5c7dce..31d9cbe817a2 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -6862,7 +6862,7 @@ static void mmu_destroy_caches(void) static int get_nx_huge_pages(char *buffer, const struct kernel_param *kp) { if (nx_hugepage_mitigation_hard_disabled) - return sprintf(buffer, "never\n"); + return sysfs_emit(buffer, "never\n"); return param_get_bool(buffer, kp); } diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 0ecf4be2c6af..254f2296e549 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -366,9 +366,9 @@ static int vmentry_l1d_flush_set(const char *s, const struct kernel_param *kp) static int vmentry_l1d_flush_get(char *s, const struct kernel_param *kp) { if (WARN_ON_ONCE(l1tf_vmx_mitigation >= ARRAY_SIZE(vmentry_l1d_param))) - return sprintf(s, "???\n"); + return sysfs_emit(s, "???\n"); - return sprintf(s, "%s\n", vmentry_l1d_param[l1tf_vmx_mitigation].option); + return sysfs_emit(s, "%s\n", vmentry_l1d_param[l1tf_vmx_mitigation].option); } static void vmx_setup_fb_clear_ctrl(void) |