Author: mmokhi (ports committer) Date: Fri Jun 23 10:36:27 2017 New Revision: 320265 URL: https://svnweb.freebsd.org/changeset/base/320265
Log: Fix caveat in new implementation of linprocfs_docpuinfo(): Prevent kernel panic in case that extended-cpuid isn't supported by CPU Reviewed by: kib, ngie, trasz Approved by: trasz MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D11294 Modified: head/sys/compat/linprocfs/linprocfs.c Modified: head/sys/compat/linprocfs/linprocfs.c ============================================================================== --- head/sys/compat/linprocfs/linprocfs.c Fri Jun 23 10:09:49 2017 (r320264) +++ head/sys/compat/linprocfs/linprocfs.c Fri Jun 23 10:36:27 2017 (r320265) @@ -245,7 +245,10 @@ linprocfs_docpuinfo(PFS_FILL_ARGS) break; } #endif - do_cpuid(0x80000006, cache_size); + if (cpu_exthigh >= 0x80000006) + do_cpuid(0x80000006, cache_size); + else + memset(cache_size, 0, sizeof(cache_size)); for (i = 0; i < mp_ncpus; ++i) { fqmhz = 0; fqkhz = 0; _______________________________________________ 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"
