Re: [PATCH v5.10.y] bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself

[Harinadh Dommaraju]

On Thu, Jan 8, 2026 at 9:24 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On Fri, Dec 12, 2025 at 03:54:58AM +0000, HarinadhD wrote:
> > From: Jakub Sitnicki <jakub@xxxxxxxxxxxxxx>
> >
> > [ Upstream commit 5b4a79ba65a1ab479903fff2e604865d229b70a9 ]
> >
> > sock_map proto callbacks should never call themselves by design. Protect
> > against bugs like [1] and break out of the recursive loop to avoid a stack
> > overflow in favor of a resource leak.
> >
> > [1] https://lore.kernel.org/all/00000000000073b14905ef2e7401@xxxxxxxxxx/
> >
> > Suggested-by: Eric Dumazet <edumazet@xxxxxxxxxx>
> > Signed-off-by: Jakub Sitnicki <jakub@xxxxxxxxxxxxxx>
> > Acked-by: John Fastabend <john.fastabend@xxxxxxxxx>
> > Link: https://lore.kernel.org/r/20230113-sockmap-fix-v2-1-1e0ee7ac2f90@xxxxxxxxxxxxxx
> > Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
> > Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
> > [ Harinadh: Modified to apply on v5.10.y ]
> > Signed-off-by: HarinadhD <Harinadh.Dommaraju@xxxxxxxxxxxx>
>
> Please use your name for your signed-off-by.
>

Thanks Greg.
I have sent v2.

- Harinadh

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