Re: [PATCH] vsprintf: Do not break early boot with probing addresses
From: Steven Rostedt <rostedt@goodmis.org>
Date: 2019-05-10 16:24:07
Also in:
linux-arch, linux-s390, lkml
On Fri, 10 May 2019 10:42:13 +0200 Petr Mladek [off-list ref] wrote:
static const char *check_pointer_msg(const void *ptr)
{
- char byte;
-
if (!ptr)
return "(null)";
- if (probe_kernel_address(ptr, byte))
+ if ((unsigned long)ptr < PAGE_SIZE || IS_ERR_VALUE(ptr))
return "(efault)";
< PAGE_SIZE ? do you mean: < TASK_SIZE ? -- Steve