linux/net/mptcp
Paolo Abeni d7b1bfd083 mptcp: be careful on subflows shutdown
When the workqueue disposes of the msk, the subflows can still
receive some data from the peer after __mptcp_close_ssk()
completes.

The above could trigger a race between the msk receive path and the
msk destruction. Acquiring the mptcp_data_lock() in __mptcp_destroy_sock()
will not save the day: the rx path could be reached even after msk
destruction completes.

Instead use the subflow 'disposable' flag to prevent entering
the msk receive path after __mptcp_close_ssk().

Fixes: e16163b6e2 ("mptcp: refactor shutdown and close")
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-09 19:31:58 -08:00
..
Kconfig mptcp: depends on IPV6 but not as a module 2020-10-21 08:05:40 -07:00
Makefile mptcp: enable JOIN requests even if cookies are in use 2020-07-31 16:55:32 -07:00
crypto.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-08-05 20:13:21 -07:00
crypto_test.c mptcp: move crypto test to KUNIT 2020-06-26 16:21:39 -07:00
ctrl.c mptcp: add a new sysctl add_addr_timeout 2020-11-04 17:45:53 -08:00
diag.c mptcp: allow dumping subflow context to userspace 2020-03-29 22:14:48 -07:00
mib.c mptcp: add RM_ADDR related mibs 2020-09-24 19:58:34 -07:00
mib.h mptcp: add RM_ADDR related mibs 2020-09-24 19:58:34 -07:00
mptcp_diag.c mptcp: avoid a few atomic ops in the rx path 2020-11-30 17:55:23 -08:00
options.c mptcp: link MPC subflow into msk only after accept 2020-12-09 19:31:58 -08:00
pm.c mptcp: link MPC subflow into msk only after accept 2020-12-09 19:31:58 -08:00
pm_netlink.c mptcp: use the variable sk instead of open-coding 2020-12-09 19:02:16 -08:00
protocol.c mptcp: be careful on subflows shutdown 2020-12-09 19:31:58 -08:00
protocol.h mptcp: link MPC subflow into msk only after accept 2020-12-09 19:31:58 -08:00
subflow.c mptcp: plug subflow context memory leak 2020-12-09 19:31:58 -08:00
syncookies.c mptcp: fix syncookie build error on UP 2020-08-01 11:52:55 -07:00
token.c mptcp: token: fix unititialized variable 2020-11-03 13:08:30 -08:00
token_test.c mptcp: introduce token KUNIT self-tests 2020-06-26 16:21:39 -07:00