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[Qemu-devel] [PULL v2 16/23] linux-user: Handle NULL sched_param argumen
From: |
riku . voipio |
Subject: |
[Qemu-devel] [PULL v2 16/23] linux-user: Handle NULL sched_param argument to sched_* |
Date: |
Tue, 19 Aug 2014 11:32:51 +0300 |
From: Tom Musta <address@hidden>
The sched_getparam, sched_setparam and sched_setscheduler system
calls take a pointer argument to a sched_param structure. When
this pointer is null, errno should be set to EINVAL.
Signed-off-by: Tom Musta <address@hidden>
Signed-off-by: Riku Voipio <address@hidden>
---
linux-user/syscall.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index d223cff..a0436da 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7806,6 +7806,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
struct sched_param *target_schp;
struct sched_param schp;
+ if (arg2 == 0) {
+ return -TARGET_EINVAL;
+ }
if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
goto efault;
schp.sched_priority = tswap32(target_schp->sched_priority);
@@ -7817,6 +7820,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
{
struct sched_param *target_schp;
struct sched_param schp;
+
+ if (arg2 == 0) {
+ return -TARGET_EINVAL;
+ }
ret = get_errno(sched_getparam(arg1, &schp));
if (!is_error(ret)) {
if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
@@ -7830,6 +7837,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
{
struct sched_param *target_schp;
struct sched_param schp;
+ if (arg3 == 0) {
+ return -TARGET_EINVAL;
+ }
if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
goto efault;
schp.sched_priority = tswap32(target_schp->sched_priority);
--
2.0.1
- [Qemu-devel] [PULL v2 07/23] linux-user: support ioprio_{get, set} syscalls, (continued)
- [Qemu-devel] [PULL v2 07/23] linux-user: support ioprio_{get, set} syscalls, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 08/23] linux-user: support {name_to, open_by}_handle_at syscalls, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 11/23] linux-user: Dereference Pointer Argument to ipc/semctl Sys Call, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 09/23] linux-user: add setns and unshare, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 02/23] linux-user: redirect openat calls, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 12/23] linux-user: Properly Handle semun Structure In Cross-Endian Situations, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 06/23] linux-user: support timerfd_{create, gettime, settime} syscalls, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 10/23] linux-user: PPC64 semid_ds Doesnt Include _unused1 and _unused2, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 04/23] linux-user: Fix conversion of sigevent argument to timer_create, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 01/23] linux-user: /proc/self/maps content, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 16/23] linux-user: Handle NULL sched_param argument to sched_*,
riku . voipio <=
- [Qemu-devel] [PULL v2 13/23] linux-user: Make ipc syscall's third argument an abi_long, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 17/23] linux-user: Detect fault in sched_rr_get_interval, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 15/23] linux-user: Detect Negative Message Sizes in msgsnd System Call, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 20/23] linux-user: clock_nanosleep errno Handling on PPC, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 23/23] linux-user: check return value of malloc(), riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 14/23] linux-user: Conditionally Pass Attribute Pointer to mq_open(), riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 18/23] linux-user: Move get_ppc64_abi, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 22/23] linux-user: writev Partial Writes, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 21/23] linux-user: Support target-to-host translation of mlockall argument, riku . voipio, 2014/08/19
- [Qemu-devel] [PULL v2 19/23] linux-user: Minimum Sig Handler Stack Size for PPC64 ELF V2, riku . voipio, 2014/08/19