X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Farm%2Fkernel%2Fswp_emulate.c;h=5d9b1eeecfd14e89e628b3e7aa826a4b113ea058;hb=ccc5d24ca98a00a1161021ed7550e0aae1ec663e;hp=5f452f8fde0569d140e0d6055220f29be08396f1;hpb=f85f19de90a9997583bb26e6f1f9297a4e152c18;p=pandora-kernel.git

diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c
index 5f452f8fde05..5d9b1eeecfd1 100644
--- a/arch/arm/kernel/swp_emulate.c
+++ b/arch/arm/kernel/swp_emulate.c
@@ -108,10 +108,12 @@ static void set_segfault(struct pt_regs *regs, unsigned long addr)
 {
 	siginfo_t info;
 
+	down_read(&current->mm->mmap_sem);
 	if (find_vma(current->mm, addr) == NULL)
 		info.si_code = SEGV_MAPERR;
 	else
 		info.si_code = SEGV_ACCERR;
+	up_read(&current->mm->mmap_sem);
 
 	info.si_signo = SIGSEGV;
 	info.si_errno = 0;