Re: [PATCH 1/5] mtd: m25p80: fix allocation size

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On Thursday 24 October 2013 10:47 PM, Brian Norris wrote:
On Wed, Oct 23, 2013 at 07:58:19PM -0700, Brian Norris wrote:
This patch fixes two memory errors:

1. During a probe failure (in mtd_device_parse_register?) the command
    buffer would not be freed.

2. The command buffer's size is determined based on the 'fast_read'
    boolean, but the assignment of fast_read is made after this
    allocation. Thus, the buffer may be allocated "too small".

To fix the first, just switch to the devres version of kzalloc.

To fix the second, increase MAX_CMD_SIZE unconditionally. It's not worth
saving a byte to fiddle around with the conditions here.

This problem was reported by Yuhang Wang a while back.

Signed-off-by: Brian Norris<computersforpeace@xxxxxxxxx>
Reported-by: Yuhang Wang<wangyuhang2014@xxxxxxxxx>
Cc:<stable@xxxxxxxxxxxxxxx>
I pushed patches 1, 2, and 3 to l2-mtd.git (for Sourav's sake).
Thanks!
I'll
wait a little while on the others. Comments are still welcome on the
whole series, though.

Brian

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