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authorRalf Baechle <ralf@linux-mips.org>2005-08-16 17:47:00 +0000
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 19:32:06 +0100
commitac351d947390c00b8ece3cde997fe173fc8649ed (patch)
tree57f5801414b2d66905b2596ce93573f53528a457
parentd2f755e04f26b9ab4b8da24c025dc4f6112d6bee (diff)
Add a few simple error checks to tlb dumper.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/lib-32/dump_tlb.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/arch/mips/lib-32/dump_tlb.c b/arch/mips/lib-32/dump_tlb.c
index 9373a7740125..46519f4331eb 100644
--- a/arch/mips/lib-32/dump_tlb.c
+++ b/arch/mips/lib-32/dump_tlb.c
@@ -160,24 +160,27 @@ void dump_list_process(struct task_struct *t, void *address)
if (addr > KSEG0)
page_dir = pgd_offset_k(0);
- else
+ else if (t->mm) {
page_dir = pgd_offset(t->mm, 0);
- printk("page_dir == %08x\n", (unsigned int) page_dir);
+ printk("page_dir == %08x\n", (unsigned int) page_dir);
+ } else
+ printk("Current thread has no mm\n");
if (addr > KSEG0)
pgd = pgd_offset_k(addr);
- else
+ else if (t->mm) {
pgd = pgd_offset(t->mm, addr);
- printk("pgd == %08x, ", (unsigned int) pgd);
+ printk("pgd == %08x, ", (unsigned int) pgd);
+ pud = pud_offset(pgd, addr);
+ printk("pud == %08x, ", (unsigned int) pud);
- pud = pud_offset(pgd, addr);
- printk("pud == %08x, ", (unsigned int) pud);
-
- pmd = pmd_offset(pud, addr);
- printk("pmd == %08x, ", (unsigned int) pmd);
+ pmd = pmd_offset(pud, addr);
+ printk("pmd == %08x, ", (unsigned int) pmd);
- pte = pte_offset(pmd, addr);
- printk("pte == %08x, ", (unsigned int) pte);
+ pte = pte_offset(pmd, addr);
+ printk("pte == %08x, ", (unsigned int) pte);
+ } else
+ printk("Current thread has no mm\n");
page = *pte;
#ifdef CONFIG_64BIT_PHYS_ADDR