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-rw-r--r--arch/mips/kernel/traps.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 074e857ced28..c51bd20cd081 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -712,10 +712,12 @@ int process_fpemu_return(int sig, void __user *fault_addr)
si.si_addr = fault_addr;
si.si_signo = sig;
if (sig == SIGSEGV) {
+ down_read(&current->mm->mmap_sem);
if (find_vma(current->mm, (unsigned long)fault_addr))
si.si_code = SEGV_ACCERR;
else
si.si_code = SEGV_MAPERR;
+ up_read(&current->mm->mmap_sem);
} else {
si.si_code = BUS_ADRERR;
}