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-rw-r--r--src/arch/x86/boot/acpigen.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/arch/x86/boot/acpigen.c b/src/arch/x86/boot/acpigen.c
index 121cb22f05..6496d759de 100644
--- a/src/arch/x86/boot/acpigen.c
+++ b/src/arch/x86/boot/acpigen.c
@@ -274,7 +274,8 @@ int acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len)
acpigen_emit_byte(0x83);
len = acpigen_write_len_f();
- sprintf(pscope, "\\_PR.CPU%x", (unsigned int) cpuindex);
+ snprintf(pscope, sizeof (pscope),
+ "\\_PR.CPU%x", (unsigned int) cpuindex);
len += acpigen_emit_namestring(pscope);
acpigen_emit_byte(cpuindex);
acpigen_emit_byte(pblock_addr & 0xff);