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SubjectRe: WARNING in kmalloc_slab (3)
On Sun, Dec 03, 2017 at 12:16:08PM -0800, Eric Biggers wrote:
> Looks like BLKTRACESETUP doesn't limit the '.buf_nr' parameter, allowing anyone
> who can open a block device to cause an extremely large kmalloc. Here's a
> simplified reproducer:

There are lots of places which allow people to allocate as much as they
want. With Syzcaller, you might want to just hard code a __GFP_NOWARN
in to disable it.

dan carpenter

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