On Wed, Jan 4, 2017 at 12:26 PM, Alan Somers <asom...@freebsd.org> wrote: > Author: asomers > Date: Wed Jan 4 20:26:42 2017 > New Revision: 311305 > URL: https://svnweb.freebsd.org/changeset/base/311305 > > Log: > Always null-terminate ccb_pathinq.(sim_vid|hba_vid|dev_name) > > The sim_vid, hba_vid, and dev_name fields of struct ccb_pathinq are > fixed-length strings. AFAICT the only place they're read is in > sbin/camcontrol/camcontrol.c, which assumes they'll be null-terminated. > However, the kernel doesn't null-terminate them. A bunch of copy-pasted code > uses strncpy to write them, and doesn't guarantee null-termination. For at > least 4 drivers (mpr, mps, ciss, and hyperv), the hba_vid field actually > overflows. You can see the result by doing "camcontrol negotiate da0 -v". > > This change null-terminates those fields everywhere they're set in the > kernel. It also shortens a few strings to ensure they'll fit within the > 16-character field. > > PR: 215474 > Reported by: Coverity > CID: 1009997 1010000 1010001 1010002 1010003 1010004 1010005 > CID: 1331519 1010006 1215097 1010007 1288967 1010008 1306000 > CID: 1211924 1010009 1010010 1010011 1010012 1010013 1010014 > CID: 1147190 1010017 1010016 1010018 1216435 1010020 1010021 > CID: 1010022 1009666 1018185 1010023 1010025 1010026 1010027 > CID: 1010028 1010029 1010030 1010031 1010033 1018186 1018187 > CID: 1010035 1010036 1010042 1010041 1010040 1010039 > Reviewed by: imp, sephe, slm > MFC after: 4 weeks > Sponsored by: Spectra Logic Corp > Differential Revision: https://reviews.freebsd.org/D9037 > Differential Revision: https://reviews.freebsd.org/D9038
Awesome -- after I make my pass at bsnmp and netbsd-tests, I'll loop back around to help out with writing tests for cam(3). Cheers, -Ngie _______________________________________________ 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"
