Commit b40b84b1 authored by Wang Kefeng's avatar Wang Kefeng Committed by Russell King (Oracle)
Browse files

ARM: 9254/1: mm: Provide better message when kernel fault 



If there is a kernel fault, see do_kernel_fault(), we only print
the generic "paging request" or "NULL pointer dereference" message
which don't show read, write or excute information, let's provide
better fault message for them.

Signed-off-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: default avatarRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
parent d539fee9

arch/arm/mm/fault.c

+3 −2
Original line number Diff line number Diff line
@@ -111,8 +111,9 @@ static void die_kernel_fault(const char *msg, struct mm_struct *mm, 
{

	bust_spinlocks(1);

	pr_alert("8<--- cut here ---\n");

	pr_alert("Unable to handle kernel %s at virtual address %08lx\n",

		 msg, addr);

	pr_alert("Unable to handle kernel %s at virtual address %08lx when %s\n",

		 msg, addr, fsr & FSR_LNX_PF ? "execute" :

		 fsr & FSR_WRITE ? "write" : "read");



	show_pte(KERN_ALERT, mm, addr);

	die("Oops", regs, fsr);