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linux/net/sctp
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Xin Long cda91d5b91 sctp: cancel a blocking accept when shutdown a listen socket 
As David Laight noticed,

"In a multithreaded program it is reasonable to have a thread blocked in
 accept(). With TCP a subsequent shutdown(listen_fd, SHUT_RDWR) causes
 the accept to fail. But nothing happens for SCTP."

sctp_disconnect() is eventually called when shutdown a listen socket,
but nothing is done in this function. This patch sets RCV_SHUTDOWN
flag in sk->sk_shutdown there, and adds the check (sk->sk_shutdown &
RCV_SHUTDOWN) to break and return in sctp_accept().

Note that shutdown() is only supported on TCP-style SCTP socket.

Reported-by: David Laight <David.Laight@aculab.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-07-03 09:45:39 +01:00
..
associola.c sctp: update transport state when processing a dupcook packet 2023-10-04 17:29:44 -07:00
auth.c sctp: delete the nested flexible array hmac 2023-04-21 08:19:30 +01:00
bind_addr.c sctp: fail if no bound addresses can be used for a given scope 2023-01-24 18:32:33 -08:00
chunk.c
debug.c sctp: add the probe timer in transport for PLPMTUD 2021-06-22 11:28:52 -07:00
diag.c inet_diag: add module pointer to "struct inet_diag_handler" 2024-01-23 15:13:54 +01:00
endpointola.c sctp: add dif and sdif check in asoc and ep lookup 2022-11-18 11:42:54 +00:00
input.c inet: move inet->recverr to inet->inet_flags 2023-08-16 11:09:17 +01:00
inqueue.c net: sctp: fix skb leak in sctp_inq_free() 2024-02-15 07:34:52 -08:00
ipv6.c ipv6: introduce dst_rt6_info() helper 2024-04-29 13:32:01 +01:00
Kconfig sctp: create udp4 sock and add its encap_rcv 2020-10-30 15:23:52 -07:00
Makefile sctp: add fair capacity stream scheduler 2023-03-09 11:31:44 +01:00
objcnt.c
offload.c net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
output.c net: allow gso_max_size to exceed 65536 2022-05-16 10:18:55 +01:00
outqueue.c sctp: delete the nested flexible array variable 2023-04-21 08:19:29 +01:00
primitive.c
proc.c sctp: annotate data-races around sk->sk_wmem_queued 2023-08-31 11:56:59 +02:00
protocol.c inet: introduce dst_rtable() helper 2024-04-30 18:32:38 -07:00
sm_make_chunk.c sctp: Spelling s/preceeding/preceding/g 2023-10-04 14:04:58 -07:00
sm_sideeffect.c sctp: handle invalid error codes without calling BUG() 2023-06-12 09:36:27 +01:00
sm_statefuns.c net: add <net/proto_memory.h> 2024-04-30 18:46:52 -07:00
sm_statetable.c sctp: add the probe timer in transport for PLPMTUD 2021-06-22 11:28:52 -07:00
socket.c sctp: cancel a blocking accept when shutdown a listen socket 2024-07-03 09:45:39 +01:00
stream_interleave.c sctp: delete the nested flexible array skip 2023-04-21 08:19:29 +01:00
stream_sched_fc.c sctp: add weighted fair queueing stream scheduler 2023-03-09 11:31:44 +01:00
stream_sched_prio.c sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop 2023-02-23 12:59:40 -08:00
stream_sched_rr.c sctp: delete free member from struct sctp_sched_ops 2022-12-01 20:14:23 -08:00
stream_sched.c sctp: fix a potential OOB access in sctp_sched_set_sched() 2023-05-10 12:10:15 +01:00
stream.c sctp: delete the nested flexible array params 2023-04-21 08:19:29 +01:00
sysctl.c net: Remove ctl_table sentinel elements from several networking subsystems 2024-05-03 13:29:42 +01:00
transport.c sctp: fix an issue that plpmtu can never go to complete state 2023-05-22 11:05:20 +01:00
tsnmap.c net: sctp: trivial: fix typo in comment 2021-03-04 13:48:32 -08:00
ulpevent.c net: remove noblock parameter from recvmsg() entities 2022-04-12 15:00:25 +02:00
ulpqueue.c sctp: remove unnecessary NULL check in sctp_ulpq_tail_event() 2022-10-20 21:43:10 -07:00