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__mcctrl_os_read_write_cpu_register: Range-check cpu number

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Change-Id: I9ef991e1f0a7e301430586c261bf55bf73a4bae9
This commit is contained in:
Masamichi Takagi
2020-04-03 13:06:11 +09:00
parent 79950e045e
commit 4f50c90f6e
1 changed files with 15 additions and 0 deletions
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15
executer/kernel/mcctrl/control.c
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@ -3491,10 +3491,25 @@ int __mcctrl_os_read_write_cpu_register(ihk_os_t os, int cpu,
struct ihk_os_cpu_register *desc, struct ihk_os_cpu_register *desc,
enum mcctrl_os_cpu_operation op) enum mcctrl_os_cpu_operation op)
{ {
struct mcctrl_usrdata *udp = ihk_host_os_get_usrdata(os);
struct ikc_scd_packet isp; struct ikc_scd_packet isp;
struct mcctrl_os_cpu_response resp; struct mcctrl_os_cpu_response resp;
int ret = -EINVAL; int ret = -EINVAL;
if (!udp) {
pr_err("%s: error: mcctrl_usrdata not found\n", __func__);
ret = -EINVAL;
goto out;
}
if (cpu < 0 || cpu >= udp->cpu_info->n_cpus) {
pr_err("%s: error: cpu (%d) is out of range\n",
__func__, cpu);
ret = -EINVAL;
goto out;
}
memset(&isp, '\0', sizeof(struct ikc_scd_packet)); memset(&isp, '\0', sizeof(struct ikc_scd_packet));
isp.msg = SCD_MSG_CPU_RW_REG; isp.msg = SCD_MSG_CPU_RW_REG;
isp.op = op; isp.op = op;