linux-stable/net/rds
Rao Shoaib aced3ce57c RDS tcp loopback connection can hang
When TCP is used as transport and a program on the
system connects to RDS port 16385, connection is
accepted but denied per the rules of RDS. However,
RDS connections object is left in the list. Next
loopback connection will select that connection
object as it is at the head of list. The connection
attempt will hang as the connection object is set
to connect over TCP which is not allowed

The issue can be reproduced easily, use rds-ping
to ping a local IP address. After that use any
program like ncat to connect to the same IP
address and port 16385. This will hang so ctrl-c out.
Now try rds-ping, it will hang.

To fix the issue this patch adds checks to disallow
the connection object creation and destroys the
connection object.

Signed-off-by: Rao Shoaib <rao.shoaib@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-05-21 14:46:59 -07:00
..
af_rds.c net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
bind.c net/rds: Check laddr_check before calling it 2019-09-27 12:10:55 +02:00
cong.c net: rds: delete duplicated words 2020-09-18 14:12:43 -07:00
connection.c RDS tcp loopback connection can hang 2021-05-21 14:46:59 -07:00
ib.c rds: stop using dmapool 2020-11-17 15:22:06 -04:00
ib.h rds: stop using dmapool 2020-11-17 15:22:06 -04:00
ib_cm.c rds: ib: Remove two ib_modify_qp() calls 2021-04-12 19:51:48 -03:00
ib_frmr.c RDMA/rds: Remove FMR support for memory registration 2020-06-02 20:32:53 -03:00
ib_mr.h RDMA/rds: Remove FMR support for memory registration 2020-06-02 20:32:53 -03:00
ib_rdma.c RDMA/rds: Remove FMR support for memory registration 2020-06-02 20:32:53 -03:00
ib_recv.c rds: stop using dmapool 2020-11-17 15:22:06 -04:00
ib_ring.c
ib_send.c rds: Remove redundant assignment to nr_sig 2021-04-27 14:14:33 -07:00
ib_stats.c net/rds: Fix 'ib_evt_handler_call' element in 'rds_ib_stat_names' 2019-09-15 20:56:19 +02:00
ib_sysctl.c
info.c rds: fix crash in rds_info_getsockopt() 2020-05-20 14:08:06 -07:00
info.h
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
loop.c
loop.h
Makefile RDMA/rds: Remove FMR support for memory registration 2020-06-02 20:32:53 -03:00
message.c Revert "net/rds: Avoid potential use after free in rds_send_remove_from_sock" 2021-04-24 09:32:35 -07:00
page.c
rdma.c net/rds: restrict iovecs length for RDS_CMSG_RDMA_ARGS 2021-02-02 08:44:08 -08:00
rdma_transport.c rds: ib: Remove two ib_modify_qp() calls 2021-04-12 19:51:48 -03:00
rdma_transport.h net: rds: rdma_transport.h: delete duplicated word 2020-07-19 18:14:51 -07:00
rds.h net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
rds_single_path.h
recv.c net/rds: Drop duplicate sin and sin6 assignments 2021-03-10 12:45:15 -08:00
send.c Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
stats.c rds: check for excessive looping in rds_send_xmit 2019-08-15 12:04:24 -07:00
sysctl.c
tcp.c RDS tcp loopback connection can hang 2021-05-21 14:46:59 -07:00
tcp.h RDS tcp loopback connection can hang 2021-05-21 14:46:59 -07:00
tcp_connect.c net: add sock_no_linger 2020-05-28 11:11:44 -07:00
tcp_listen.c RDS tcp loopback connection can hang 2021-05-21 14:46:59 -07:00
tcp_recv.c
tcp_send.c tcp: add tcp_sock_set_cork 2020-05-28 11:11:45 -07:00
tcp_stats.c
threads.c rds: make v3.1 as compat version 2019-02-04 14:59:11 -08:00
transport.c rds: transport module should be auto loaded when transport is set 2020-06-25 16:26:25 -07:00