Cong Wang cee6592d44 smc: disallow TCP_ULP in smc_setsockopt() ... [ Upstream commit 8621436671f3a4bba5db57482e1ee604708bf1eb ] syzbot is able to setup kTLS on an SMC socket which coincidentally uses sk_user_data too. Later, kTLS treats it as psock so triggers a refcnt warning. The root cause is that smc_setsockopt() simply calls TCP setsockopt() which includes TCP_ULP. I do not think it makes sense to setup kTLS on top of SMC sockets, so we should just disallow this setup. It is hard to find a commit to blame, but we can apply this patch since the beginning of TCP_ULP. Reported-and-tested-by: syzbot+b54a1ce86ba4a623b7f0@syzkaller.appspotmail.com Fixes: 734942cc4e ("tcp: ULP infrastructure") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-19 10:13:08 +02:00
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af_smc.c
Kconfig
Makefile
smc_cdc.c
smc_cdc.h
smc_clc.c
smc_clc.h
smc_close.c
smc_close.h
smc_core.c
smc_core.h
smc_diag.c
smc_ib.c
smc_ib.h
smc_ism.c
smc_ism.h
smc_llc.c
smc_llc.h
smc_netns.h
smc_pnet.c
smc_pnet.h
smc_rx.c
smc_rx.h
smc_tx.c
smc_tx.h
smc_wr.c
smc_wr.h
smc.h