Tetsuo Handa 3bc53be9db net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL. ... syzbot is reporting stalls at nfc_llcp_send_ui_frame() [1]. This is because nfc_llcp_send_ui_frame() is retrying the loop without any delay when nonblocking nfc_alloc_send_skb() returned NULL. Since there is no need to use MSG_DONTWAIT if we retry until sock_alloc_send_pskb() succeeds, let's use blocking call. Also, in case an unexpected error occurred, let's break the loop if blocking nfc_alloc_send_skb() failed. [1] https://syzkaller.appspot.com/bug?id=4a131cc571c3733e0eff6bc673f4e36ae48f19c6 Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reported-by: syzbot <syzbot+d29d18215e477cfbfbdd@syzkaller.appspotmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-07-18 10:51:45 -07:00
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hci	NFC: Convert timers to use timer_setup()	2017-11-06 01:12:10 +01:00
nci	net: annotate ->poll() instances	2017-11-27 16:20:04 -05:00
Kconfig	…
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
af_nfc.c	…
core.c	NFC: Convert timers to use timer_setup()	2017-11-06 01:12:10 +01:00
digital.h	…
digital_core.c	NFC: digital: Abort cmd when deactivating target	2017-11-10 00:03:39 +01:00
digital_dep.c	NFC: digital: NFC-DEP Target WT(nfcdep,max) is now 14	2017-06-23 00:19:59 +02:00
digital_technology.c	NFC: digital: NFC-A SEL_RES must be one byte	2017-06-23 00:19:59 +02:00
llcp.h	…
llcp_commands.c	net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL.	2018-07-18 10:51:45 -07:00
llcp_core.c	NFC: Convert timers to use timer_setup()	2017-11-06 01:12:10 +01:00
llcp_sock.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00
netlink.c	net: remove unnecessary genlmsg_cancel() calls	2018-05-29 09:53:38 -04:00
nfc.h	…
rawsock.c	Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL	2018-06-28 10:40:47 -07:00