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Commit 4e25c0e9 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
Browse files

m68k/mm: Check for mm != NULL in do_page_fault() debug code 



When DEBUG is enabled, do_page_fault() may dereference a NULL pointer,
causing recursive bus errors.

Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
parent 9da4a8d9

arch/m68k/mm/fault.c

+1 −2
Original line number Original line Diff line number Diff line
@@ -77,8 +77,7 @@ int do_page_fault(struct pt_regs *regs, unsigned long address, 




#ifdef DEBUG

#ifdef DEBUG

	printk ("do page fault:\nregs->sr=%#x, regs->pc=%#lx, address=%#lx, %ld, %p\n",

	printk ("do page fault:\nregs->sr=%#x, regs->pc=%#lx, address=%#lx, %ld, %p\n",

		regs->sr, regs->pc, address, error_code,

		regs->sr, regs->pc, address, error_code, mm ? mm->pgd : NULL);

		current->mm->pgd);

#endif

#endif





	/*

	/*