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Commit f10eca6e authored by Michal Simek's avatar Michal Simek
Browse files

microblaze: Fix do_page_fault for no context 



Calling fixup when we are in kernel mode. This
prevent fault for copy_to/from_user. This fault
was find thanks to writev01/03/04 LTP tests.

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent f14d6f7c

arch/microblaze/mm/fault.c

+4 −9
Original line number Diff line number Diff line
@@ -122,15 +122,10 @@ void do_page_fault(struct pt_regs *regs, unsigned long address, 
	}

#endif /* CONFIG_KGDB */



	if (in_atomic() || mm == NULL) {

		/* FIXME */

		if (kernel_mode(regs)) {

			printk(KERN_EMERG

				"Page fault in kernel mode - Oooou!!! pid %d\n",

				current->pid);

			_exception(SIGSEGV, regs, code, address);

			return;

		}

	if (in_atomic() || !mm) {

		if (kernel_mode(regs))

			goto bad_area_nosemaphore;



		/* in_atomic() in user mode is really bad,

		   as is current->mm == NULL. */

		printk(KERN_EMERG "Page fault in user mode with "