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dm: Fix potential overflow bug

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Fix a potential overflow problem in get_more_acpi_dev_info where ch_read
might have a value greater than 32.

Tracked-On: #6769
Signed-off-by: Yifan Liu <yifan1.liu@intel.com>
This commit is contained in:
Yifan Liu 2021-11-03 15:34:51 +08:00 committed by wenlingz
parent 2f5db5f4ee
commit 496a653b0d
1 changed files with 1 additions and 1 deletions
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devicemodel/hw/mmio/core.c
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@ -165,7 +165,7 @@ int get_mmio_hpa_resource(char *name, uint64_t *res_start, uint64_t *res_size)
*/ */
int get_more_acpi_dev_info(char *hid, uint32_t instance, struct acpi_dev_pt_ops *ops) int get_more_acpi_dev_info(char *hid, uint32_t instance, struct acpi_dev_pt_ops *ops)
{ {
char pathbuf[128], line[64]; char pathbuf[128], line[32];
int ret = -1; int ret = -1;
size_t ch_read; size_t ch_read;
FILE *fp; FILE *fp;