Jakub Kicinski 7123a4337b net: tls: avoid hanging tasks on the tx_lock ... commit f3221361dc upstream. syzbot sent a hung task report and Eric explains that adversarial receiver may keep RWIN at 0 for a long time, so we are not guaranteed to make forward progress. Thread which took tx_lock and went to sleep may not release tx_lock for hours. Use interruptible sleep where possible and reschedule the work if it can't take the lock. Testing: existing selftest passes Reported-by: syzbot+9c0268252b8ef967c62e@syzkaller.appspotmail.com Fixes: 79ffe6087e ("net/tls: add a TX lock") Link: https://lore.kernel.org/all/000000000000e412e905f5b46201@google.com/ Cc: stable@vger.kernel.org # wait 4 weeks Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20230301002857.2101894-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-03-11 16:40:19 +01:00
..
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	net/tls: add skeleton of MIB statistics	2019-10-05 16:29:00 -07:00
tls_device.c	net/tls: Remove the context from the list in tls_device_down	2022-08-03 12:00:46 +02:00
tls_device_fallback.c	net/tls: Fix use-after-free after the TLS device goes down and up	2021-06-10 13:39:18 +02:00
tls_main.c	net/tls: Check for errors in tls_device_init	2022-07-21 21:20:13 +02:00
tls_proc.c	net: fix proc_fs init handling in af_packet and tls	2021-02-23 15:53:23 +01:00
tls_sw.c	net: tls: avoid hanging tasks on the tx_lock	2023-03-11 16:40:19 +01:00
tls_toe.c	net/tls: rename tls_hw_* functions tls_toe_*	2019-10-04 14:07:07 -07:00
trace.c	net/tls: add tracing for device/offload events	2019-10-05 16:29:00 -07:00
trace.h	net/tls: add device decrypted trace point	2019-10-05 16:29:00 -07:00