CVSROOT: /cvs
Module name: src
Changes by: clau...@cvs.openbsd.org 2023/10/08 01:44:52
Modified files:
sys/net : ifq.c ifq.h
Log message:
Revert commitid: KtmyJEoS0WWxmlZ5
---
Protect interface queues with read once and mutex.
Reading atomic values need at least read once and writing values
should have a mutex. This is what mbuf queues already do. Add
READ_ONCE() to ifq and ifiq macros for len and empty. Convert
ifq_set_maxlen() to a function that grabs ifq_mtx.
OK mvs@
---
ifq_set_maxlen() is called before the ifq_mtx is initalized and this at
least crashes WITNESS kernels on boot.
Reported-by: syzbot+7b218ef53432b5d56...@syzkaller.appspotmail.com
