Re: [PATCH] net: Fix potential NULL pointer dereference in __skb_try_recv_datagram

[Eric Dumazet]

On Tue, 2016-01-05 at 15:34 +0100, Jacob Siverskog wrote:
> On Tue, Jan 5, 2016 at 3:14 PM, Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote:

> >
> > You might build a kernel with KASAN support to get maybe more chances to
> > trigger the bug.
> >
> > ( https://www.kernel.org/doc/Documentation/kasan.txt )
> >
> 
> Ah. Doesn't seem to be supported on arm(32) unfortunately.

Then you could at least use standard debugging features :

CONFIG_SLAB=y
CONFIG_SLABINFO=y
CONFIG_DEBUG_SLAB=y
CONFIG_DEBUG_SLAB_LEAK=y

(Or equivalent SLUB options)

and

CONFIG_DEBUG_PAGEALLOC=y

(If arm(32) has CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y)



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