Unverified Commit f5f1af57 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!14006 filemap: Fix bounds checking in filemap_read() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Kaixiong Yu <yukaixiong@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/V2XMXAPI6IFTU3SFLNJYW7KWZRUORO3X/ 
 
https://gitee.com/src-openeuler/kernel/issues/IB5AUF 
 
Link:https://gitee.com/openeuler/kernel/pulls/14006

 

Reviewed-by: default avatarLi Nan <linan122@huawei.com>
Signed-off-by: default avatarLi Nan <linan122@huawei.com>
parents 7f972668 51eecfe8

mm/filemap.c

+1 −1
Original line number Diff line number Diff line
@@ -2554,7 +2554,7 @@ ssize_t generic_file_buffered_read(struct kiocb *iocb, 
	if (unlikely(!iov_iter_count(iter)))

		return 0;



	iov_iter_truncate(iter, inode->i_sb->s_maxbytes);

	iov_iter_truncate(iter, inode->i_sb->s_maxbytes - iocb->ki_pos);



	if (nr_pages > ARRAY_SIZE(pages_onstack))

		pages = kmalloc_array(nr_pages, sizeof(void *), GFP_KERNEL);