On Monday, October 17, 2016 10:20:39 AM Hans Petter Selasky wrote: > Author: hselasky > Date: Mon Oct 17 10:20:38 2016 > New Revision: 307518 > URL: https://svnweb.freebsd.org/changeset/base/307518 > > Log: > Fix device delete child function. > > When detaching device trees parent devices must be detached prior to > detaching its children. This is because parent devices can have > pointers to the child devices in their softcs which are not > invalidated by device_delete_child(). This can cause use after free > issues and panic(). > > Device drivers implementing trees, must ensure its detach function > detaches or deletes all its children before returning. > > While at it remove now redundant device_detach() calls before > device_delete_child() and device_delete_children(), mostly in > the USB controller drivers. > > Tested by: Jan Henrik Sylvester <m...@janh.de> > Reviewed by: jhb > Differential Revision: https://reviews.freebsd.org/D8070 > MFC after: 2 weeks
Thanks. -- John Baldwin _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
