}
mmap_read_unlock(mm);
- if (unlikely(fault & VM_FAULT_ERROR)) {
- mm_fault_error(regs, hw_error_code, address, fault);
+ if (likely(!(fault & VM_FAULT_ERROR)))
+ return;
+
+ if (fatal_signal_pending(current) && !user_mode(regs)) {
+ kernelmode_fixup_or_oops(regs, error_code, address, 0, 0);
return;
}
-
- check_v8086_mode(regs, address, tsk);
+
+ if (fault & VM_FAULT_OOM) {
+ /* Kernel mode? Handle exceptions or die: */
+ if (!user_mode(regs)) {
+ kernelmode_fixup_or_oops(regs, error_code, address,
+ SIGSEGV, SEGV_MAPERR);
+ return;
+ }
+
+ /*
+ * We ran out of memory, call the OOM killer, and return the
+ * userspace (which will retry the fault, or kill us if we got
+ * oom-killed):
+ */
+ pagefault_out_of_memory();
+ } else {
+ if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON|
+ VM_FAULT_HWPOISON_LARGE))
+ do_sigbus(regs, error_code, address, fault);
+ else if (fault & VM_FAULT_SIGSEGV)
+ bad_area_nosemaphore(regs, error_code, address);
+ else
+ BUG();
+ }
}
NOKPROBE_SYMBOL(do_user_addr_fault);