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Merge "soc: Fix out of bounds access in register show function"

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qctecmdr
2019-09-04 03:24:02 -07:00
committed by Gerrit - the friendly Code Review server
parent 8ff9993fa0 9f599b4a78
commit d7c16ff4f4
1 changed files with 5 additions and 0 deletions
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5
soc/swr-mstr-ctrl.c
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@@ -144,6 +144,11 @@ static ssize_t swrm_reg_show(char __user *ubuf, size_t count,
i <= SWR_MSTR_MAX_REG_ADDR; i += 4) {
reg_val = dbgswrm->read(dbgswrm->handle, i);
len = snprintf(tmp_buf, 25, "0x%.3x: 0x%.2x\n", i, reg_val);
if (len < 0) {
pr_err("%s: fail to fill the buffer\n", __func__);
total = -EFAULT;
goto copy_err;
}
if ((total + len) >= count - 1)
break;
if (copy_to_user((ubuf + total), tmp_buf, len)) {