On Wed, Feb 22, 2017 at 8:18 PM, Jonathan T. Looney <j...@freebsd.org> wrote:
> Author: jtl > Date: Thu Feb 23 01:18:47 2017 > New Revision: 314116 > URL: https://svnweb.freebsd.org/changeset/base/314116 > > Log: > Fix a panic during boot caused by inadequate locking of some vt(4) driver > data structures. > > vt_change_font() calls vtbuf_grow() to change some vt driver data > structures. It uses TF_MUTE to prevent the console from trying to use > those > data structures while it changes them. > > During the early stage of the boot process, the vt driver's tc_done > routine > uses those data structures; however, it is currently called outside the > TF_MUTE check. > > Move the tc_done routine inside the locked TF_MUTE check. > > PR: 217282 > Reviewed by: ed, ray > Sponsored by: Netflix > Differential Revision: https://reviews.freebsd.org/D9709 Sorry, this should also say: MFC after: 2 weeks The change should go back to stable/11, since EARLY_AP_STARTUP is an option there. (It appears EARLY_AP_STARTUP is a prerequisite for hitting this bug.) Jonathan _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
