static noinline void
no_context(struct pt_regs *regs, unsigned long error_code,
- unsigned long address)
+ unsigned long address, int signal, int si_code)
{
struct task_struct *tsk = current;
unsigned long *stackend;
int sig;
/* Are we prepared to handle this kernel fault? */
- if (fixup_exception(regs))
+ if (fixup_exception(regs)) {
+ if (current_thread_info()->sig_on_uaccess_error && signal) {
+ tsk->thread.trap_no = 14;
+ tsk->thread.error_code = error_code | PF_USER;
+ tsk->thread.cr2 = address;
+
+ /* XXX: hwpoison faults will set the wrong code. */
+ force_sig_info_fault(signal, si_code, address, tsk, 0);
+ }
return;
+ }
/*
* 32-bit:
if (is_f00f_bug(regs, address))
return;
- no_context(regs, error_code, address);
+ no_context(regs, error_code, address, SIGSEGV, si_code);
}
static noinline void
/* Kernel mode? Handle exceptions or die: */
if (!(error_code & PF_USER)) {
- no_context(regs, error_code, address);
+ no_context(regs, error_code, address, SIGBUS, BUS_ADRERR);
return;
}
if (!(fault & VM_FAULT_RETRY))
up_read(¤t->mm->mmap_sem);
if (!(error_code & PF_USER))
- no_context(regs, error_code, address);
+ no_context(regs, error_code, address, 0, 0);
return 1;
}
if (!(fault & VM_FAULT_ERROR))
/* Kernel mode? Handle exceptions or die: */
if (!(error_code & PF_USER)) {
up_read(¤t->mm->mmap_sem);
- no_context(regs, error_code, address);
+ no_context(regs, error_code, address,
+ SIGSEGV, SEGV_MAPERR);
return 1;
}