Re: net: non contiguous allocations passed to build_skb

[Eric Dumazet]

On Fri, 2015-04-24 at 15:02 -0700, Eric Dumazet wrote:
> On Fri, 2015-04-24 at 17:28 -0400, Sasha Levin wrote:
> > Hey Eric,
> > 
> > Your commit 79930f5892e ("net: do not deplete pfmemalloc reserve") assumes that
> > build_skb() will only handle contiguous allocations because of the
> > virt_to_head_page().
> > 
> > However, netlink_sendmsg() calls build_skb() with vmalloc()ed memory, causing:
> 
> gosh. netlink & vmalloc() striked again.

I'll send a fix, thanks for the report.


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