Re: [PATCH] net: bpf: correctly handle errors in sk_attach_filter()

[Daniel Borkmann]

On 09/13/2014 06:06 AM, Sasha Levin wrote:
> Commit "net: bpf: make eBPF interpreter images read-only" has changed bpf_prog
> to be vmalloc()ed but never handled some of the errors paths of the old code.
>
> On error within sk_attach_filter (which userspace can easily trigger), we'd
> kfree() the vmalloc()ed memory, and leak the internal bpf_work_struct.
>
> Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>

[ This patch is for net-next. ]

Acked-by: Daniel Borkmann <dborkman@xxxxxxxxxx>
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