Xiaoming Ni a12a2fa9a1 nfc: Avoid endless loops caused by repeated llcp_sock_connect() ... commit 4b5db93e7f2afbdfe3b78e37879a85290187e6f1 upstream. When sock_wait_state() returns -EINPROGRESS, "sk->sk_state" is LLCP_CONNECTING. In this case, llcp_sock_connect() is repeatedly invoked, nfc_llcp_sock_link() will add sk to local->connecting_sockets twice. sk->sk_node->next will point to itself, that will make an endless loop and hang-up the system. To fix it, check whether sk->sk_state is LLCP_CONNECTING in llcp_sock_connect() to avoid repeated invoking. Fixes: b4011239a0 ("NFC: llcp: Fix non blocking sockets connections") Reported-by: "kiyin(尹亮)" <kiyin@tencent.com> Link: https://www.openwall.com/lists/oss-security/2020/11/01/1 Cc: <stable@vger.kernel.org> #v3.11 Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-04-14 08:41:57 +02:00
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hci	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
nci	tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer	2021-03-04 11:37:36 +01:00
af_nfc.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
core.c	net: nfc: kerneldoc fixes	2020-07-13 17:20:40 -07:00
digital_core.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
digital_dep.c	NFC: digital: Remove two unused macroes	2020-09-05 16:01:52 -07:00
digital_technology.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
digital.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
llcp_commands.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
llcp_core.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
llcp_sock.c	nfc: Avoid endless loops caused by repeated llcp_sock_connect()	2021-04-14 08:41:57 +02:00
llcp.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
netlink.c	NFC: fix possible resource leak	2021-02-03 23:28:51 +01:00
nfc.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
rawsock.c	NFC: fix resource leak when target index is invalid	2021-02-03 23:28:51 +01:00