Wen Gu 56d99e81ec net/smc: Fix hung_task when removing SMC-R devices ... A hung_task is observed when removing SMC-R devices. Suppose that a link group has two active links(lnk_A, lnk_B) associated with two different SMC-R devices(dev_A, dev_B). When dev_A is removed, the link group will be removed from smc_lgr_list and added into lgr_linkdown_list. lnk_A will be cleared and smcibdev(A)->lnk_cnt will reach to zero. However, when dev_B is removed then, the link group can't be found in smc_lgr_list and lnk_B won't be cleared, making smcibdev->lnk_cnt never reaches zero, which causes a hung_task. This patch fixes this issue by restoring the implementation of smc_smcr_terminate_all() to what it was before commit 349d43127d ("net/smc: fix kernel panic caused by race of smc_sock"). The original implementation also satisfies the intention that make sure QP destroy earlier than CQ destroy because we will always wait for smcibdev->lnk_cnt reaches zero, which guarantees QP has been destroyed. Fixes: 349d43127d ("net/smc: fix kernel panic caused by race of smc_sock") Signed-off-by: Wen Gu <guwen@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2022-01-16 12:30:28 +00:00
..
af_smc.c	net/smc: Introduce a new conn->lgr validity check helper	2022-01-13 13:14:53 +00:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	net/smc: Introduce tracepoint for fallback	2021-11-01 13:39:14 +00:00
smc_cdc.c	net/smc: Introduce a new conn->lgr validity check helper	2022-01-13 13:14:53 +00:00
smc_cdc.h	net/smc: fix kernel panic caused by race of smc_sock	2021-12-28 12:42:45 +00:00
smc_clc.c	net/smc: Introduce a new conn->lgr validity check helper	2022-01-13 13:14:53 +00:00
smc_clc.h	net/smc: add v2 format of CLC decline message	2021-10-16 14:58:13 +01:00
smc_close.c	net/smc: Keep smc_close_final rc during active close	2021-12-02 12:14:36 +00:00
smc_close.h	net/smc: remove close abort worker	2019-10-22 11:23:44 -07:00
smc_core.c	net/smc: Fix hung_task when removing SMC-R devices	2022-01-16 12:30:28 +00:00
smc_core.h	net/smc: Resolve the race between SMC-R link access and clear	2022-01-13 13:14:53 +00:00
smc_diag.c	net/smc: Introduce a new conn->lgr validity check helper	2022-01-13 13:14:53 +00:00
smc_ib.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-12-31 14:35:40 +00:00
smc_ib.h	net/smc: Introduce net namespace support for linkgroup	2022-01-02 12:07:39 +00:00
smc_ism.c	net: Don't include filter.h from net/sock.h	2021-12-29 08:48:14 -08:00
smc_ism.h	net/smc: keep static copy of system EID	2021-09-14 12:49:10 +01:00
smc_llc.c	net/smc: Print net namespace in log	2022-01-02 12:07:39 +00:00
smc_llc.h	net/smc: extend LLC layer for SMC-Rv2	2021-10-16 14:58:13 +01:00
smc_netlink.c	net/smc: add generic netlink support for system EID	2021-09-14 12:49:10 +01:00
smc_netlink.h	net/smc: add support for user defined EIDs	2021-09-14 12:49:10 +01:00
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: fix possible NULL deref in smc_pnet_add_eth()	2022-01-12 14:45:29 +00:00
smc_pnet.h	net/smc: determine proposed ISM devices	2020-09-28 15:19:03 -07:00
smc_rx.c	net/smc: Introduce tracepoints for tx and rx msg	2021-11-01 13:39:14 +00:00
smc_rx.h
smc_stats.c	net/smc: Fix ENODATA tests in smc_nl_get_fback_stats()	2021-06-21 12:16:58 -07:00
smc_stats.h	net/smc: Make SMC statistics network namespace aware	2021-06-16 12:54:02 -07:00
smc_tracepoint.c	net/smc: Introduce tracepoint for smcr link down	2021-11-01 13:39:14 +00:00
smc_tracepoint.h	net/smc: Add net namespace for tracepoints	2022-01-02 12:07:39 +00:00
smc_tx.c	net/smc: Introduce tracepoints for tx and rx msg	2021-11-01 13:39:14 +00:00
smc_tx.h
smc_wr.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-12-30 12:12:12 -08:00
smc_wr.h	net/smc: Remove unused function declaration	2022-01-15 22:57:21 +00:00
smc.h	net/smc: Resolve the race between link group access and termination	2022-01-13 12:55:40 +00:00