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do not allow unaligned access

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rjkm 2024-09-19 10:23:58 +02:00
parent ffbef1488e
commit 0c328cd989
1 changed files with 4 additions and 0 deletions
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4
ddbridge/ddbridge-core.c
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@ -3334,6 +3334,8 @@ static long ddb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return -EFAULT; return -EFAULT;
if ((reg.reg & 0xfffffff) >= dev->regs_len) if ((reg.reg & 0xfffffff) >= dev->regs_len)
return -EINVAL; return -EINVAL;
if (reg.reg & 3)
return -EINVAL;
reg.val = ddbreadl(dev, reg.reg); reg.val = ddbreadl(dev, reg.reg);
if (copy_to_user(parg, &reg, sizeof(reg))) if (copy_to_user(parg, &reg, sizeof(reg)))
return -EFAULT; return -EFAULT;
@ -3347,6 +3349,8 @@ static long ddb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return -EFAULT; return -EFAULT;
if ((reg.reg & 0xfffffff) >= dev->regs_len) if ((reg.reg & 0xfffffff) >= dev->regs_len)
return -EINVAL; return -EINVAL;
if (reg.reg & 3)
return -EINVAL;
ddbwritel(dev, reg.val, reg.reg); ddbwritel(dev, reg.val, reg.reg);
break; break;
} }