On Wed, 22 May 2019, Gen Zhang wrote:
> In function con_init(), the pointer variable vc_cons[currcons].d, vc and
> vc->vc_screenbuf is allocated a memory space via kzalloc(). And they are
> used in the following codes.
> However, when there is a memory allocation error, kzalloc() can fail.
> Thus
In function con_init(), the pointer variable vc_cons[currcons].d, vc and
vc->vc_screenbuf is allocated a memory space via kzalloc(). And they are
used in the following codes.
However, when there is a memory allocation error, kzalloc() can fail.
Thus null pointer (vc_cons[currcons].d, vc and vc->vc_
Cc'ing Grzegorz.
On Tue, May 21, 2019 at 11:21:18AM +0800, Gen Zhang wrote:
> On Mon, May 20, 2019 at 10:55:40PM -0400, Nicolas Pitre wrote:
> > As soon as you release the lock, another thread could come along and
> > start using the memory pointed by vc_cons[currcons].d you're about to
> > free
On Mon, May 20, 2019 at 10:55:40PM -0400, Nicolas Pitre wrote:
> As soon as you release the lock, another thread could come along and
> start using the memory pointed by vc_cons[currcons].d you're about to
> free here. This is unlikely for an initcall, but still.
>
> You should consider this ord
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