Date: Wed, 23 Jan 2019 17:36:59 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r343350 - in stable: 11/sys/dev/hwpmc 12/sys/dev/hwpmc Message-ID: <201901231736.x0NHax5J005590@repo.freebsd.org>
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Author: markj Date: Wed Jan 23 17:36:58 2019 New Revision: 343350 URL: https://svnweb.freebsd.org/changeset/base/343350 Log: MFC r343265: hwpmc: Plug memory disclosures from PMC_OP_{GETPMCINFO,GETCPUINFO}. admbugs: 765 Modified: stable/12/sys/dev/hwpmc/hwpmc_mod.c Directory Properties: stable/12/ (props changed) Changes in other areas also in this revision: Modified: stable/11/sys/dev/hwpmc/hwpmc_mod.c Directory Properties: stable/11/ (props changed) Modified: stable/12/sys/dev/hwpmc/hwpmc_mod.c ============================================================================== --- stable/12/sys/dev/hwpmc/hwpmc_mod.c Wed Jan 23 17:34:01 2019 (r343349) +++ stable/12/sys/dev/hwpmc/hwpmc_mod.c Wed Jan 23 17:36:58 2019 (r343350) @@ -3512,6 +3512,7 @@ pmc_syscall_handler(struct thread *td, void *syscall_a struct pmc_classdep *pcd; int cl; + memset(&gci, 0, sizeof(gci)); gci.pm_cputype = md->pmd_cputype; gci.pm_ncpu = pmc_cpu_max(); gci.pm_npmc = md->pmd_npmc; @@ -3661,7 +3662,7 @@ pmc_syscall_handler(struct thread *td, void *syscall_a npmc = md->pmd_npmc; pmcinfo_size = npmc * sizeof(struct pmc_info); - pmcinfo = malloc(pmcinfo_size, M_PMC, M_WAITOK); + pmcinfo = malloc(pmcinfo_size, M_PMC, M_WAITOK | M_ZERO); p = pmcinfo;
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