Author: kib Date: Tue Sep 25 18:24:25 2018 New Revision: 338928 URL: https://svnweb.freebsd.org/changeset/base/338928
Log: Fix an issue in r338862. For pmap_invalidate_all_pcid(), only reset pm_gen for non-kernel pmaps, as it was done before the conversion to ifuncs. The reset is useless but innocent for kernel_pmap. Coverity reported that cpuid is used uninitialized in this case. Reported by: cem Reviewed by: alc, cem, markj CID: 1395807 Sponsored by: The FreeBSD Foundation Approved by: re (gjb) Differential revision: https://reviews.freebsd.org/D17314 Modified: head/sys/amd64/amd64/pmap.c Modified: head/sys/amd64/amd64/pmap.c ============================================================================== --- head/sys/amd64/amd64/pmap.c Tue Sep 25 17:58:06 2018 (r338927) +++ head/sys/amd64/amd64/pmap.c Tue Sep 25 18:24:25 2018 (r338928) @@ -1966,10 +1966,10 @@ pmap_invalidate_all_pcid(pmap_t pmap, bool invpcid_wor critical_exit(); } else pmap->pm_pcids[cpuid].pm_gen = 0; - } - CPU_FOREACH(i) { - if (cpuid != i) - pmap->pm_pcids[i].pm_gen = 0; + CPU_FOREACH(i) { + if (cpuid != i) + pmap->pm_pcids[i].pm_gen = 0; + } } /* See the comment in pmap_invalidate_page_pcid(). */ atomic_thread_fence_seq_cst(); _______________________________________________ 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"
