Unverified Commit c01c470f authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!2286 scsi: lpfc: Prevent lpfc_debugfs_lockstat_write() buffer overflow 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yong Hu <yong.hu@windriver.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/3XLJ5OL6PSSHIDSHAKXNOJT4RROJT2WO/ 
 
https://gitee.com/openeuler/kernel/issues/I7ZCDZ 
 
Link:https://gitee.com/openeuler/kernel/pulls/2286

 

Reviewed-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents b4ca97ce 50853c0e

drivers/scsi/lpfc/lpfc_debugfs.c

+5 −2
Original line number Diff line number Diff line
@@ -2159,10 +2159,13 @@ lpfc_debugfs_lockstat_write(struct file *file, const char __user *buf, 
	char mybuf[64];

	char *pbuf;

	int i;

	size_t bsize;



	memset(mybuf, 0, sizeof(mybuf));



	if (copy_from_user(mybuf, buf, nbytes))

	bsize = min(nbytes, (sizeof(mybuf) - 1));



	if (copy_from_user(mybuf, buf, bsize))

		return -EFAULT;

	pbuf = &mybuf[0];
@@ -2183,7 +2186,7 @@ lpfc_debugfs_lockstat_write(struct file *file, const char __user *buf, 
			qp->lock_conflict.wq_access = 0;

		}

	}

	return nbytes;

	return bsize;

}

#endif