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linux/net/smc
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Guangguan Wang 7a6927814b net/smc: check return value of sock_recvmsg when draining clc data 
[ Upstream commit c5b8ee5022 ]

When receiving clc msg, the field length in smc_clc_msg_hdr indicates the
length of msg should be received from network and the value should not be
fully trusted as it is from the network. Once the value of length exceeds
the value of buflen in function smc_clc_wait_msg it may run into deadloop
when trying to drain the remaining data exceeding buflen.

This patch checks the return value of sock_recvmsg when draining data in
case of deadloop in draining.

Fixes: fb4f79264c ("net/smc: tolerate future SMCD versions")
Signed-off-by: Guangguan Wang <guangguan.wang@linux.alibaba.com>
Reviewed-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-12-27 13:58:47 +01:00
..
af_smc.c net/smc: check smcd_v2_ext_offset when receiving proposal msg 2024-12-27 13:58:47 +01:00
Kconfig net/smc: Fix dependency of SMC on ISM 2023-10-10 11:51:41 +02:00
Makefile net/smc: fix compile warning for smc_sysctl 2022-03-07 11:59:17 +00:00
smc.h net/smc: refactoring initialization of smc sock 2024-12-14 19:59:37 +01:00
smc_cdc.c net/smc: allow cdc msg send rather than drop it with NULL sndbuf_desc 2023-11-20 11:59:35 +01:00
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: check return value of sock_recvmsg when draining clc data 2024-12-27 13:58:47 +01:00
smc_clc.h net/smc: check smcd_v2_ext_offset when receiving proposal msg 2024-12-27 13:58:47 +01:00
smc_close.c net/smc: put sk reference if close work was canceled 2023-11-20 11:59:35 +01:00
smc_close.h net/smc: remove close abort worker 2019-10-22 11:23:44 -07:00
smc_core.c net/smc: protect link down work from execute after lgr freed 2024-12-27 13:58:47 +01:00
smc_core.h net/smc: {at|de}tach sndbuf to peer DMB if supported 2024-12-14 19:59:37 +01:00
smc_diag.c net/smc: compatible with 128-bits extended GID of virtual ISM device 2024-12-14 19:59:36 +01:00
smc_ib.c net/smc: fix neighbour and rtable leak in smc_ib_find_route() 2024-05-17 12:02:24 +02:00
smc_ib.h net/smc: fix smc clc failed issue when netdevice not in init_net 2023-10-13 16:52:02 -07:00
smc_ism.c net/smc: add operations to merge sndbuf with peer DMB 2024-12-14 19:59:37 +01:00
smc_ism.h net/smc: add operations to merge sndbuf with peer DMB 2024-12-14 19:59:37 +01:00
smc_llc.c net/smc: support max links per lgr negotiation in clc handshake 2023-08-19 12:46:53 +01:00
smc_llc.h net/smc: Introduce a specific sysctl for TEST_LINK time 2022-09-22 12:58:21 +02:00
smc_netlink.c genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +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: compatible with 128-bits extended GID of virtual ISM device 2024-12-14 19:59:36 +01:00
smc_pnet.h net/smc: Use a mutex for locking "struct smc_pnettable" 2022-02-24 09:09:33 -08:00
smc_rx.c net: deal with most data-races in sk_wait_event() 2023-05-10 10:03:32 +01:00
smc_rx.h smc: add support for splice() 2018-05-04 11:45:06 -04:00
smc_stats.c smc: Drop smc_sendpage() in favour of smc_sendmsg() + MSG_SPLICE_PAGES 2023-06-24 15:50:12 -07:00
smc_stats.h net/smc: add the max value of fallback reason count 2024-08-14 13:58:40 +02:00
smc_sysctl.c sysctl-6.6-rc1 2023-08-29 17:39:15 -07:00
smc_sysctl.h net/smc: fix -Wmissing-prototypes warning when CONFIG_SYSCTL not set 2022-03-09 20:02:35 -08:00
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 smc: Drop smc_sendpage() in favour of smc_sendmsg() + MSG_SPLICE_PAGES 2023-06-24 15:50:12 -07:00
smc_tx.h smc: Drop smc_sendpage() in favour of smc_sendmsg() + MSG_SPLICE_PAGES 2023-06-24 15:50:12 -07:00
smc_wr.c net/smc: Fix memory leak when using percpu refs 2024-11-01 01:58:22 +01:00
smc_wr.h net/smc: Use percpu ref for wr tx reference 2023-03-17 08:59:01 +00:00