Re: IPv4: ip_options_compile() how can we avoid blowing up on a NULL skb???

From: "Jesper Juhl" <[email protected]>
Date: Thu, 16 Nov 2006 23:34:14 +0100

> So if 'skb' is NULL, the only route I see that doesn't cause a NULL
> pointer deref is if  (opt != NULL)  and at the same time
> (opt->is_data != NULL)  .   Is that guaranteed in any way?

Yes, it is guarenteed, all callers  make sure these invariants
hold true.

I'm very happy to accept a patch which assert's this using BUG()
checks :-)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: IPv4: ip_options_compile() how can we avoid blowing up on a NULL skb???
    • From: Herbert Xu <[email protected]>

• References:
  • IPv4: ip_options_compile() how can we avoid blowing up on a NULL skb???
    • From: "Jesper Juhl" <[email protected]>

• Prev by Date: Re: UDP packets loss
• Next by Date: RE: [PATCH] ALSA: hda-intel - Disable MSI support by default
• Previous by thread: IPv4: ip_options_compile() how can we avoid blowing up on a NULL skb???
• Next by thread: Re: IPv4: ip_options_compile() how can we avoid blowing up on a NULL skb???
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]