On Sat, 2016-01-30 at 18:56 +0330, mokhi wrote: > Hi. > in kbd.c there are many places spltty()/splx() used assuming it > locks/unlocks. > though there is bug filed for this, and ive asked in #bsddev, Ive > preferred to ask and ensure it from here again. > As these functions are obsoleted now, this assumption is incorrect > and > some places we have thread-unsafely which leads to security problems > (and/or for example double-free, etc) > > can i use mutex/spin/lock/unlock under where assumed a lock/unlock by > using spltty()/splx() to patch it? > > Thanks, Mokhi.
If you start working on locking in keyboard drivers you might discover there are dragons there. For example... https://lists.freebsd.org/pipermail/svn-src-head/2014-March/056833.html -- Ian _______________________________________________ firstname.lastname@example.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"