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-rw-r--r--arch/x86/kernel/ldt.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 500e90e44f86..26d713ecad34 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -426,7 +426,8 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
* already installed then the PTE page is already
* populated. Mop up a half populated page table.
*/
- free_ldt_pgtables(mm);
+ if (!WARN_ON_ONCE(old_ldt))
+ free_ldt_pgtables(mm);
free_ldt_struct(new_ldt);
goto out_unlock;
}