Author: rlibby Date: Thu Jan 23 04:56:38 2020 New Revision: 357019 URL: https://svnweb.freebsd.org/changeset/base/357019
Log: 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: head/sys/vm/uma_core.c Modified: head/sys/vm/uma_core.c ============================================================================== --- head/sys/vm/uma_core.c Thu Jan 23 04:56:34 2020 (r357018) +++ head/sys/vm/uma_core.c Thu Jan 23 04:56:38 2020 (r357019) @@ -2297,7 +2297,8 @@ 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]; zone->uz_bkt_max = ULONG_MAX; timevalclear(&zone->uz_ratecheck); _______________________________________________ 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"
