Index: lib/sanitizer_common/sanitizer_linux.cc
===================================================================
--- lib/sanitizer_common/sanitizer_linux.cc
+++ lib/sanitizer_common/sanitizer_linux.cc
@@ -1557,7 +1557,10 @@
   register int *r2 __asm__("r2") = parent_tidptr;
   register void *r3 __asm__("r3") = newtls;
   register int *r4 __asm__("r4") = child_tidptr;
-  register int r7 __asm__("r7") = __NR_clone;
+  //GCC does not allow to have frame pointer register as a clobber register
+  //for inline assembler, when flag -fno-omit-frame-pointer is added.
+  //By default, arm with mthumb mode uses r7 as a frame pointer register.
+  register int r8 __asm__("r8") = __NR_clone;
 
 #if __ARM_ARCH > 4 || defined (__ARM_ARCH_4T__)
 # define ARCH_HAS_BX
@@ -1586,6 +1589,8 @@
                         */
 
                        /* Do the system call */
+                       "push {r7}\n"
+                       "mov r7, r8\n"
                        "swi 0x0\n"
 
                        /* if (%r0 != 0)
@@ -1602,9 +1607,10 @@
                        "mov r7, %7\n"
                        "swi 0x0\n"
                        "1:\n"
+                       "pop {r7}\n"
                        "mov %0, r0\n"
                        : "=r"(res)
-                       : "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r7),
+                       : "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r8),
                          "i"(__NR_exit)
                        : "memory");
   return res;