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linux/net/smc
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Cong Wang cee6592d44 smc: disallow TCP_ULP in smc_setsockopt() 
[ Upstream commit 8621436671 ]

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
..
af_smc.c
smc: disallow TCP_ULP in smc_setsockopt()
2021-05-19 10:13:08 +02:00
Kconfig
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
Makefile
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
smc_cdc.c
net/smc: use separate work queues for different worker types
2020-09-10 15:24:27 -07:00
smc_cdc.h
net/smc: pre-fetch send buffer outside of send_lock
2020-05-30 18:12:25 -07:00
smc_clc.c
net/smc: CLC decline - V2 enhancements
2020-09-28 15:19:03 -07:00
smc_clc.h
net/smc: Replace zero-length array with flexible-array member
2020-10-30 16:57:42 -05:00
smc_close.c
net/smc: check variable before dereferencing in smc_close.c
2020-09-16 17:30:16 -07:00
smc_close.h
net/smc: remove close abort worker
2019-10-22 11:23:44 -07:00
smc_core.c
net/smc: fix matching of existing link groups
2020-11-19 10:59:19 -08:00
smc_core.h
net/smc: introduce CLC first contact extension
2020-09-28 15:19:03 -07:00
smc_diag.c
net/smc: use the retry mechanism for netlink messages
2020-09-10 15:24:27 -07:00
smc_ib.c
net/smc: fix direct access to ib_gid_addr->ndev in smc_ib_determine_gid()
2020-11-19 10:59:19 -08:00
smc_ib.h
net/smc: protect smc ib device initialization
2020-07-19 15:30:22 -07:00
smc_ism.c
net/smc: use an array to check fields in system EID
2020-10-03 17:04:48 -07:00
smc_ism.h
net/smc: introduce CHID callback for ISM devices
2020-09-28 15:19:03 -07:00
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
net/smc: move add link processing for new device into llc layer
2020-07-19 15:30:22 -07:00
smc_netns.h
net/smc: introduce list of pnetids for Ethernet devices
2020-09-28 15:19:03 -07:00
smc_pnet.c
net/smc: determine proposed ISM devices
2020-09-28 15:19:03 -07:00
smc_pnet.h
net/smc: determine proposed ISM devices
2020-09-28 15:19:03 -07:00
smc_rx.c
fs: make the pipe_buf_operations ->confirm operation optional
2020-05-20 12:11:26 -04:00
smc_rx.h
smc: add support for splice()
2018-05-04 11:45:06 -04:00
smc_tx.c
net/smc: use separate work queues for different worker types
2020-09-10 15:24:27 -07:00
smc_tx.h
net/smc: eliminate cursor read and write calls
2018-07-23 10:57:14 -07:00
smc_wr.c
net/smc: fix work request handling
2020-07-08 12:35:15 -07:00
smc_wr.h
net/smc: wait for departure of an IB message
2020-05-04 10:54:39 -07:00
smc.h
net/smc: introduce CLC first contact extension
2020-09-28 15:19:03 -07:00