tcp, ulp: enforce sock_owned_by_me upon ulp init and cleanup

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Whenever the ULP data on the socket is mangled, enforce that the
caller has the socket lock held as otherwise things may race with
initialization and cleanup callbacks from ulp ops as both would
mangle internal socket state.

Joint work with John.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Daniel Borkmann 2018-10-13 02:45:56 +02:00 • committed by Alexei Starovoitov

parent 67e89ac328

commit 8b9088f806

1 changed files with 4 additions and 0 deletions

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net/ipv4/tcp_ulp.c

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