scsi: megaraid_sas: avoid unaligned access in ioctl path (318aaef8) · Commits · 戴 / test

Fix kernel warning for accessing unaligned memory access in driver. Signed-off-by:

drivers/scsi/megaraid/megaraid_sas_base.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -43,6 +43,7 @@
		#include <linux/uio.h>
		#include <linux/slab.h>
		#include <linux/uaccess.h>
		#include <asm/unaligned.h>
		#include <linux/fs.h>
		#include <linux/compat.h>
		#include <linux/blkdev.h>
		@@ -7007,7 +7008,8 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
		sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
		ioc->sense_off);

		if (copy_to_user((void __user )((unsigned long)(sense_ptr)),
		if (copy_to_user((void __user *)((unsigned long)
		get_unaligned((unsigned long *)sense_ptr)),
		sense, ioc->sense_len)) {
		dev_err(&instance->pdev->dev, "Failed to copy out to user "
		"sense data\n");