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-rw-r--r--arch/x86/entry/common.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index 4efd39aacb9f..7b2542b13ebd 100644
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
@@ -38,6 +38,7 @@
#ifdef CONFIG_X86_64
__visible noinstr void do_syscall_64(unsigned long nr, struct pt_regs *regs)
{
+ add_random_kstack_offset();
nr = syscall_enter_from_user_mode(regs, nr);
instrumentation_begin();
@@ -83,6 +84,7 @@ __visible noinstr void do_int80_syscall_32(struct pt_regs *regs)
{
unsigned int nr = syscall_32_enter(regs);
+ add_random_kstack_offset();
/*
* Subtlety here: if ptrace pokes something larger than 2^32-1 into
* orig_ax, the unsigned int return value truncates it. This may
@@ -102,6 +104,7 @@ static noinstr bool __do_fast_syscall_32(struct pt_regs *regs)
unsigned int nr = syscall_32_enter(regs);
int res;
+ add_random_kstack_offset();
/*
* This cannot use syscall_enter_from_user_mode() as it has to
* fetch EBP before invoking any of the syscall entry work