6 Apr
2012
6 Apr
'12
1:54 p.m.
On Fri, 6 Apr 2012 09:46:46 -0400, Xi Wang xi.wang@gmail.com wrote:
On Apr 6, 2012, at 9:36 AM, Chris Wilson wrote:
On Fri, 6 Apr 2012 08:58:18 -0400, Xi Wang xi.wang@gmail.com wrote:
A large args->buffer_count from userspace may overflow the allocation size, leading to out-of-bounds access.
Use kmalloc_array() to avoid that.
I can safely say that exec list larger than 4GiB is going to be an illegal operation and would rather the ioctl failed outright with EINVAL.
On 32-bit platform?
On any platform. The largest it can legally be is a few tens of megabytes. -Chris
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Chris Wilson, Intel Open Source Technology Centre