Author: rlibby Date: Fri Dec 18 08:29:38 2020 New Revision: 368752 URL: https://svnweb.freebsd.org/changeset/base/368752
Log: MFC r357019: uma: fix zone domain overlaying pcpu cache with disabled cpus UMA zone structures have two arrays at the end which are sized according to the machine: an array of CPU count length, and an array of NUMA domain count length. The CPU counting was wrong in the case where some CPUs are disabled (when mp_ncpus != mp_maxid + 1), and this caused the second array to be overlaid with the first. Reported by: olivier Reviewed by: jeff, markj Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D23318 Modified: stable/12/sys/vm/uma_core.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/vm/uma_core.c ============================================================================== --- stable/12/sys/vm/uma_core.c Fri Dec 18 04:23:20 2020 (r368751) +++ stable/12/sys/vm/uma_core.c Fri Dec 18 08:29:38 2020 (r368752) @@ -1782,7 +1782,8 @@ zone_ctor(void *mem, int size, void *udata, int flags) zone->uz_flags = 0; zone->uz_warning = NULL; /* The domain structures follow the cpu structures. */ - zone->uz_domain = (struct uma_zone_domain *)&zone->uz_cpu[mp_ncpus]; + zone->uz_domain = + (struct uma_zone_domain *)&zone->uz_cpu[mp_maxid + 1]; timevalclear(&zone->uz_ratecheck); keg = arg->keg; _______________________________________________ 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"
