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https://github.com/projectacrn/acrn-hypervisor.git
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a257f2fadc
NR_MAX_IRQS is defined as 272 and IRQ_INVALID as 273 which implies that 272 is a valid irq number. In this case, an illegal access can occur at run time when irq_desc_array[] or irq_count[] is accessed with index 272. This fix stops the illegal access by renaming NR_MAX_IRQS to NR_IRQS and then places proper conditions for range checks. If the index is >= NR_IRQS, then index is invalid otherwise its considered valid for accessing irq arrays. IRQ_INVALID definition is also changed to 0xffffffffU to indicate maximum unsigned value. Signed-off-by: Madeeha Javed <madeeha_javed@mentor.com>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef PER_CPU_H
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#define PER_CPU_H
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#include <hypervisor.h>
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#include <bsp_extern.h>
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#include <schedule.h>
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#include <common/irq.h>
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#include <arch/x86/irq.h>
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#include <sbuf.h>
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#include <gdt.h>
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#include <timer.h>
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#include <logmsg.h>
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#include "arch/x86/guest/instr_emul_wrapper.h"
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struct per_cpu_region {
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uint64_t *sbuf[ACRN_SBUF_ID_MAX];
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uint64_t irq_count[NR_IRQS];
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uint64_t vmexit_cnt[64];
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uint64_t vmexit_time[64];
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uint64_t softirq_pending;
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uint64_t spurious;
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uint64_t vmxon_region_pa;
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struct dev_handler_node *timer_node;
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struct shared_buf *earlylog_sbuf;
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void *vcpu;
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void *ever_run_vcpu;
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#ifdef STACK_PROTECTOR
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struct stack_canary stack_canary;
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#endif
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struct per_cpu_timers cpu_timers;
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struct sched_context sched_ctx;
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struct emul_ctxt g_inst_ctxt;
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struct host_gdt gdt;
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struct tss_64 tss;
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enum cpu_state cpu_state;
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uint8_t mc_stack[CONFIG_STACK_SIZE] __aligned(16);
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uint8_t df_stack[CONFIG_STACK_SIZE] __aligned(16);
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uint8_t sf_stack[CONFIG_STACK_SIZE] __aligned(16);
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uint8_t stack[CONFIG_STACK_SIZE] __aligned(16);
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char logbuf[LOG_MESSAGE_MAX_SIZE];
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uint8_t lapic_id;
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} __aligned(CPU_PAGE_SIZE); //per_cpu_region size aligned with CPU_PAGE_SIZE
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extern struct per_cpu_region *per_cpu_data_base_ptr;
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extern uint16_t phys_cpu_num;
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extern uint64_t pcpu_active_bitmap;
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/*
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* get percpu data for pcpu_id.
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*/
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#define per_cpu(name, pcpu_id) \
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(per_cpu_data_base_ptr[pcpu_id].name)
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/* get percpu data for current pcpu */
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#define get_cpu_var(name) per_cpu(name, get_cpu_id())
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#endif
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