diff options
Diffstat (limited to 'arch/ppc/kernel/align.c')
| -rw-r--r-- | arch/ppc/kernel/align.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/ppc/kernel/align.c b/arch/ppc/kernel/align.c index 40d356c66c4..ff81da9598d 100644 --- a/arch/ppc/kernel/align.c +++ b/arch/ppc/kernel/align.c @@ -290,6 +290,10 @@ fix_alignment(struct pt_regs *regs) /* lwm, stmw */ nb = (32 - reg) * 4; } + + if (!access_ok((flags & ST? VERIFY_WRITE: VERIFY_READ), addr, nb+nb0)) + return -EFAULT; /* bad address */ + rptr = (unsigned char *) ®s->gpr[reg]; if (flags & LD) { for (i = 0; i < nb; ++i) |