Re: [PATCH] Hamradio: Fix a NULL pointer dereference in net/hamradio/mkiss.c

On Thu, Mar 16, 2006 at 11:20:45AM +0000, Ralf Baechle wrote:

> On Thu, Mar 16, 2006 at 02:42:11PM +0800, Eugene Teo wrote:
> 
> > Pointer ax is dereferenced before NULL check.
> > 
> > Coverity bug #817
> 
> Coverity non-bug #817.  The line discipline's ioctl method can only be
> called as long as sp_get(tty) is valid.  Same for mkiss.
> 
> Unless I'm wrong on the "locking rules" of the tty code that is and maybe
> that unobviousness is the real reason why the patch should be applied.

Oh and the same applies to Coverity bug #816.

  Ralf
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References:
- [PATCH] Hamradio: Fix a NULL pointer dereference in net/hamradio/mkiss.c
  - From: Eugene Teo <[email protected]>
- Re: [PATCH] Hamradio: Fix a NULL pointer dereference in net/hamradio/mkiss.c
  - From: Ralf Baechle <[email protected]>

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