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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