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Diffstat (limited to 'arch/x86/include/asm/stackprotector.h')
-rw-r--r--arch/x86/include/asm/stackprotector.h10
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/x86/include/asm/stackprotector.h b/arch/x86/include/asm/stackprotector.h
index c2d742c6e15f..157517763565 100644
--- a/arch/x86/include/asm/stackprotector.h
+++ b/arch/x86/include/asm/stackprotector.h
@@ -48,7 +48,7 @@
48 * head_32 for boot CPU and setup_per_cpu_areas() for others. 48 * head_32 for boot CPU and setup_per_cpu_areas() for others.
49 */ 49 */
50#define GDT_STACK_CANARY_INIT \ 50#define GDT_STACK_CANARY_INIT \
51 [GDT_ENTRY_STACK_CANARY] = { { { 0x00000018, 0x00409000 } } }, 51 [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x18),
52 52
53/* 53/*
54 * Initialize the stackprotector canary value. 54 * Initialize the stackprotector canary value.
@@ -78,21 +78,19 @@ static __always_inline void boot_init_stack_canary(void)
78#ifdef CONFIG_X86_64 78#ifdef CONFIG_X86_64
79 percpu_write(irq_stack_union.stack_canary, canary); 79 percpu_write(irq_stack_union.stack_canary, canary);
80#else 80#else
81 percpu_write(stack_canary, canary); 81 percpu_write(stack_canary.canary, canary);
82#endif 82#endif
83} 83}
84 84
85static inline void setup_stack_canary_segment(int cpu) 85static inline void setup_stack_canary_segment(int cpu)
86{ 86{
87#ifdef CONFIG_X86_32 87#ifdef CONFIG_X86_32
88 unsigned long canary = (unsigned long)&per_cpu(stack_canary, cpu) - 20; 88 unsigned long canary = (unsigned long)&per_cpu(stack_canary, cpu);
89 struct desc_struct *gdt_table = get_cpu_gdt_table(cpu); 89 struct desc_struct *gdt_table = get_cpu_gdt_table(cpu);
90 struct desc_struct desc; 90 struct desc_struct desc;
91 91
92 desc = gdt_table[GDT_ENTRY_STACK_CANARY]; 92 desc = gdt_table[GDT_ENTRY_STACK_CANARY];
93 desc.base0 = canary & 0xffff; 93 set_desc_base(&desc, canary);
94 desc.base1 = (canary >> 16) & 0xff;
95 desc.base2 = (canary >> 24) & 0xff;
96 write_gdt_entry(gdt_table, GDT_ENTRY_STACK_CANARY, &desc, DESCTYPE_S); 94 write_gdt_entry(gdt_table, GDT_ENTRY_STACK_CANARY, &desc, DESCTYPE_S);
97#endif 95#endif
98} 96}