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authormartin <martin@NetBSD.org>2022-08-03 11:11:31 +0000
committermartin <martin@NetBSD.org>2022-08-03 11:11:31 +0000
commitc0cbb295300c06ff7945a8867c3b48a4e30dcb6c (patch)
tree469ab5d104a53979d171771f7497c81e40af2693 /sys/compat/netbsd32/netbsd32_compat_50.c
parent8644187dad7b54af091a9162382bb0b561d53fbc (diff)
Pull up following revision(s), all via patch
(requested by riastradh in ticket #1487): sys/compat/linux/arch/i386/linux_machdep.c: revision 1.168 sys/compat/sunos/sunos_misc.c: revision 1.177 sys/compat/netbsd32/netbsd32_compat_50.c: revision 1.52 sys/compat/common/kern_resource_43.c: revision 1.23 sys/compat/netbsd32/netbsd32_conv.h: revision 1.46 sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.35 sys/compat/common/vfs_syscalls_12.c: revision 1.38 sys/compat/ultrix/ultrix_misc.c: revision 1.126 sys/compat/common/kern_sig_43.c: revision 1.37 sys/compat/linux/common/linux_mtio.c: revision 1.8 sys/compat/freebsd/freebsd_misc.c: revision 1.34 sys/compat/freebsd/freebsd_machdep.c: revision 1.5 sys/compat/linux/common/linux_olduname.c: revision 1.67 sys/compat/linux/arch/mips/linux_machdep.c: revision 1.44 sys/compat/freebsd/freebsd_sched.c: revision 1.23 sys/compat/ossaudio/ossaudio.c: revision 1.84 sys/compat/sys/time_types.h: revision 1.6 sys/compat/linux/arch/powerpc/linux_machdep.c: revision 1.51 sys/compat/common/ieee80211_20.c: revision 1.7 sys/compat/linux/common/linux_file.c: revision 1.119 sys/compat/linux/arch/arm/linux_machdep.c: revision 1.34 sys/compat/netbsd32/netbsd32_wait.c: revision 1.25 sys/compat/linux32/common/linux32_time.c: revision 1.38 sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.33 sys/compat/linux/arch/alpha/linux_machdep.c: revision 1.52 sys/compat/linux32/arch/amd64/linux32_machdep.c: revision 1.46 sys/compat/netbsd32/netbsd32_compat_12.c: revision 1.36 sys/compat/ultrix/ultrix_ioctl.c: revision 1.39 sys/compat/linux/common/linux_misc.c: revision 1.252 sys/compat/linux/common/linux_hdio.c: revision 1.19 sys/compat/sunos/sunos_ioctl.c: revision 1.71 sys/compat/linux/common/linux_sched.c: revision 1.79 sys/compat/common/kern_info_43.c: revision 1.40 sys/compat/linux32/common/linux32_exec_elf32.c: revision 1.20 sys/compat/linux/common/linux_socket.c: revision 1.153 sys/compat/linux/arch/amd64/linux_machdep.c: revision 1.60 sys/compat/common/vfs_syscalls_43.c: revision 1.68 sys/compat/linux/arch/powerpc/linux_exec_powerpc.c: revision 1.25 sys/compat/netbsd32/netbsd32_ptrace.c: revision 1.9 sys/compat/common/kern_time_50.c: revision 1.37 sys/compat/netbsd32/netbsd32_compat_20.c: revision 1.42 sys/compat/linux/common/linux_cdrom.c: revision 1.28 sys/compat/linux/arch/m68k/linux_machdep.c: revision 1.43 sys/compat/common/kern_info_09.c: revision 1.22 sys/compat/linux32/common/linux32_resource.c: revision 1.12 sys/compat/linux/common/linux_oldolduname.c: revision 1.67 sys/compat/common/if_media_80.c: revision 1.4 sys/compat/linux/arch/alpha/linux_osf1.c: revision 1.5 sys/compat/netbsd32/netbsd32_nfssvc.c: revision 1.8 sys/compat/linux32/common/linux32_signal.c: revision 1.21 sys/compat/common/kern_sig_13.c: revision 1.22 sys/compat/sunos32/sunos32_ioctl.c: revision 1.36 sys/compat/netbsd32/netbsd32_compat_43.c: revision 1.62 sys/compat/linux/arch/arm/linux_ptrace.c: revision 1.23 sys/compat/netbsd32/netbsd32_time.c: revision 1.56 sys/compat/linux/common/linux_signal.c: revision 1.84 sys/compat/netbsd32/netbsd32_signal.c: revision 1.52 sys/compat/sunos32/sunos32_misc.c: revision 1.85 sys/compat/linux/common/linux_time.c: revision 1.40 sys/compat/linux/common/linux_fdio.c: revision 1.14 sys/compat/common/vfs_syscalls_30.c: revision 1.43 sys/compat: Memset zero before copyout. Just in case of uninitialized padding which would lead to kernel stack disclosure. If the compiler can prove the memset redundant then it can optimize it away; otherwise better safe than sorry.
Diffstat (limited to 'sys/compat/netbsd32/netbsd32_compat_50.c')
-rw-r--r--sys/compat/netbsd32/netbsd32_compat_50.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/sys/compat/netbsd32/netbsd32_compat_50.c b/sys/compat/netbsd32/netbsd32_compat_50.c
index cf631ba6770..9a23f1cb99a 100644
--- a/sys/compat/netbsd32/netbsd32_compat_50.c
+++ b/sys/compat/netbsd32/netbsd32_compat_50.c
@@ -1,4 +1,4 @@
-/* $NetBSD: netbsd32_compat_50.c,v 1.39.2.2 2020/01/02 09:50:34 martin Exp $ */
+/* $NetBSD: netbsd32_compat_50.c,v 1.39.2.3 2022/08/03 11:11:31 martin Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_50.c,v 1.39.2.2 2020/01/02 09:50:34 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_50.c,v 1.39.2.3 2022/08/03 11:11:31 martin Exp $");
#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
@@ -167,6 +167,7 @@ compat_50_netbsd32_gettimeofday(struct lwp *l,
* NetBSD has no kernel notion of time zone, so we just
* fake up a timezone struct and return it if demanded.
*/
+ memset(&tzfake, 0, sizeof(tzfake));
tzfake.tz_minuteswest = 0;
tzfake.tz_dsttime = 0;
error = copyout(&tzfake, SCARG_P32(uap, tzp), sizeof(tzfake));
@@ -248,6 +249,8 @@ compat_50_netbsd32_adjtime(struct lwp *l,
return (error);
if (SCARG_P32(uap, olddelta)) {
+ memset(&atv, 0, sizeof(atv));
+
mutex_spin_enter(&timecounter_lock);
atv.tv_sec = time_adjtime / 1000000;
atv.tv_usec = time_adjtime % 1000000;
@@ -394,6 +397,7 @@ compat_50_netbsd32_timer_settime(struct lwp *l,
return error;
if (ovp) {
+ memset(&its32, 0, sizeof(its32));
netbsd32_from_timespec50(&ovp->it_interval, &its32.it_interval);
netbsd32_from_timespec50(&ovp->it_value, &its32.it_value);
return copyout(&its32, SCARG_P32(uap, ovalue), sizeof(its32));
@@ -416,6 +420,8 @@ compat_50_netbsd32_timer_gettime(struct lwp *l, const struct compat_50_netbsd32_
&its)) != 0)
return error;
+ memset(&its32, 0, sizeof(its32));
+
netbsd32_from_timespec50(&its.it_interval, &its32.it_interval);
netbsd32_from_timespec50(&its.it_value, &its32.it_value);