Ursula Braun 86434744fe net/smc: add fallback check to connect() ... FASTOPEN setsockopt() or sendmsg() may switch the SMC socket to fallback mode. Once fallback mode is active, the native TCP socket functions are called. Nevertheless there is a small race window, when FASTOPEN setsockopt/sendmsg runs in parallel to a connect(), and switch the socket into fallback mode before connect() takes the sock lock. Make sure the SMC-specific connect setup is omitted in this case. This way a syzbot-reported refcount problem is fixed, triggered by different threads running non-blocking connect() and FASTOPEN_KEY setsockopt. Reported-by: syzbot+96d3f9ff6a86d37e44c8@syzkaller.appspotmail.com Fixes: 6d6dd528d5 ("net/smc: fix refcount non-blocking connect() -part 2") Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>		2019-12-15 11:10:30 -08:00
..
af_smc.c	net/smc: add fallback check to connect()	2019-12-15 11:10:30 -08:00
Kconfig
Makefile
smc_cdc.c	net/smc: fix final cleanup sequence for SMCD devices	2019-11-15 12:28:28 -08:00
smc_cdc.h
smc_clc.c	net/smc: abnormal termination of SMCD link groups	2019-11-15 12:28:28 -08:00
smc_clc.h
smc_close.c	net/smc: remove unused constant	2019-11-16 12:26:49 -08:00
smc_close.h	net/smc: remove close abort worker	2019-10-22 11:23:44 -07:00
smc_core.c	net/smc: guarantee removal of link groups in reboot	2019-11-16 12:26:49 -08:00
smc_core.h	net/smc: introduce bookkeeping of SMCR link groups	2019-11-16 12:26:49 -08:00
smc_diag.c
smc_ib.c	net/smc: introduce bookkeeping of SMCR link groups	2019-11-16 12:26:49 -08:00
smc_ib.h	net/smc: introduce bookkeeping of SMCR link groups	2019-11-16 12:26:49 -08:00
smc_ism.c	net/smc: introduce bookkeeping of SMCD link groups	2019-11-15 12:28:28 -08:00
smc_ism.h
smc_llc.c	net/smc: immediate termination for SMCR link groups	2019-11-15 12:28:28 -08:00
smc_llc.h
smc_netns.h
smc_pnet.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-11-09 11:04:37 -08:00
smc_pnet.h
smc_rx.c	net/smc: cancel send and receive for terminated socket	2019-10-22 11:23:43 -07:00
smc_rx.h
smc_tx.c	net/smc: abnormal termination of SMCD link groups	2019-11-15 12:28:28 -08:00
smc_tx.h
smc_wr.c	net/smc: wait for tx completions before link freeing	2019-11-15 12:28:28 -08:00
smc_wr.h	net/smc: no WR buffer wait for terminating link group	2019-11-15 12:28:28 -08:00
smc.h	net/smc: cancel send and receive for terminated socket	2019-10-22 11:23:43 -07:00