Cong Wang 8621436671 smc: disallow TCP_ULP in smc_setsockopt() ... 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>		2021-05-05 12:52:45 -07:00
..
af_smc.c	smc: disallow TCP_ULP in smc_setsockopt()	2021-05-05 12:52:45 -07:00
Kconfig
Makefile	net/smc: Introduce generic netlink interface for diagnostic purposes	2020-12-01 17:56:12 -08:00
smc.h
smc_cdc.c	net: smc: convert tasklets to use new tasklet_setup() API	2020-11-07 10:41:15 -08:00
smc_cdc.h
smc_clc.c	net/smc: Add support for obtaining system information	2020-12-01 17:56:13 -08:00
smc_clc.h	net/smc: Add support for obtaining system information	2020-12-01 17:56:13 -08:00
smc_close.c
smc_close.h
smc_core.c	net/smc: use memcpy instead of snprintf to avoid out of bounds read	2021-01-12 20:22:01 -08:00
smc_core.h	net: smc: Remove repeated struct declaration	2021-04-01 15:52:38 -07:00
smc_diag.c	net/smc: Introduce SMCR get link command	2020-12-01 17:56:13 -08:00
smc_ib.c	net/smc: use memcpy instead of snprintf to avoid out of bounds read	2021-01-12 20:22:01 -08:00
smc_ib.h	net/smc: Add support for obtaining SMCR device list	2020-12-01 17:56:13 -08:00
smc_ism.c	net/smc: use memcpy instead of snprintf to avoid out of bounds read	2021-01-12 20:22:01 -08:00
smc_ism.h	net/smc: Add support for obtaining SMCD device list	2020-12-01 17:56:13 -08:00
smc_llc.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-10-15 12:43:21 -07:00
smc_llc.h
smc_netlink.c	net/smc: Add support for obtaining SMCR device list	2020-12-01 17:56:13 -08:00
smc_netlink.h	net/smc: Add support for obtaining system information	2020-12-01 17:56:13 -08:00
smc_netns.h
smc_pnet.c	net/smc: Add diagnostic information to smc ib-device	2020-12-01 17:56:12 -08:00
smc_pnet.h
smc_rx.c
smc_rx.h
smc_tx.c
smc_tx.h
smc_wr.c	net: smc: convert tasklets to use new tasklet_setup() API	2020-11-07 10:41:15 -08:00
smc_wr.h