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Diffstat (limited to 'arch/x86/mm/fault.c')
-rw-r--r--arch/x86/mm/fault.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 9d591c895803..6dea040cc3a1 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -1001,6 +1001,12 @@ static int fault_in_kernel_space(unsigned long address)
1001 1001
1002static inline bool smap_violation(int error_code, struct pt_regs *regs) 1002static inline bool smap_violation(int error_code, struct pt_regs *regs)
1003{ 1003{
1004 if (!IS_ENABLED(CONFIG_X86_SMAP))
1005 return false;
1006
1007 if (!static_cpu_has(X86_FEATURE_SMAP))
1008 return false;
1009
1004 if (error_code & PF_USER) 1010 if (error_code & PF_USER)
1005 return false; 1011 return false;
1006 1012
@@ -1087,11 +1093,9 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code)
1087 if (unlikely(error_code & PF_RSVD)) 1093 if (unlikely(error_code & PF_RSVD))
1088 pgtable_bad(regs, error_code, address); 1094 pgtable_bad(regs, error_code, address);
1089 1095
1090 if (static_cpu_has(X86_FEATURE_SMAP)) { 1096 if (unlikely(smap_violation(error_code, regs))) {
1091 if (unlikely(smap_violation(error_code, regs))) { 1097 bad_area_nosemaphore(regs, error_code, address);
1092 bad_area_nosemaphore(regs, error_code, address); 1098 return;
1093 return;
1094 }
1095 } 1099 }
1096 1100
1097 /* 1101 /*