Commit cf2ec789 authored Sep 30, 2021 by Sven Schnelle Committed by Helge Deller Oct 30, 2021

parisc/unwind: use copy_from_kernel_nofault()



I have no idea why get_user() is used there, but we're unwinding the
kernel stack, so we should use copy_from_kernel_nofault().

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>

parent 3a4347d8

arch/parisc/kernel/unwind.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -302,7 +302,8 @@ static void unwind_frame_regs(struct unwind_frame_info *info)
		break;
		}

		if (get_user(tmp, (unsigned long *)(info->prev_sp - RP_OFFSET)))
		if (copy_from_kernel_nofault(&tmp,
		(void *)info->prev_sp - RP_OFFSET, sizeof(tmp)))
		break;
		info->prev_ip = tmp;
		sp = info->prev_sp;