Oliver Hartkopp c358e7e99d can: af_can: can_rx_unregister(): remove WARN() statement from list operation sanity check ... commit d73ff9b7c4 upstream. To detect potential bugs in CAN protocol implementations (double removal of receiver entries) a WARN() statement has been used if no matching list item was found for removal. The fault injection issued by syzkaller was able to create a situation where the closing of a socket runs simultaneously to the notifier call chain for removing the CAN network device in use. This case is very unlikely in real life but it doesn't break anything. Therefore we just replace the WARN() statement with pr_warn() to preserve the notification for the CAN protocol development. Reported-by: syzbot+381d06e0c8eaacb8706f@syzkaller.appspotmail.com Reported-by: syzbot+d0ddd88c9a7432f041e6@syzkaller.appspotmail.com Reported-by: syzbot+76d62d3b8162883c7d11@syzkaller.appspotmail.com Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Link: https://lore.kernel.org/r/20201126192140.14350-1-socketcan@hartkopp.net Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-11 13:23:32 +01:00
..
j1939	can: j1939: j1939_sk_bind(): return failure if netdev is down	2020-11-18 19:20:19 +01:00
Kconfig	can: add support of SAE J1939 protocol	2019-09-04 14:22:33 +02:00
Makefile	can: add support of SAE J1939 protocol	2019-09-04 14:22:33 +02:00
af_can.c	can: af_can: can_rx_unregister(): remove WARN() statement from list operation sanity check	2020-12-11 13:23:32 +01:00
af_can.h	can: introduce CAN midlayer private and allocate it automatically	2019-09-04 13:29:14 +02:00
bcm.c	can: introduce CAN_REQUIRED_SIZE macro	2019-09-04 13:29:15 +02:00
gw.c	can: gw: add support for CAN FD frames	2019-08-13 17:32:21 +02:00
proc.c	can: proc: can_remove_proc(): silence remove_proc_entry warning	2020-11-22 10:14:12 +01:00
raw.c	can: introduce CAN_REQUIRED_SIZE macro	2019-09-04 13:29:15 +02:00