Unverified Commit 7196df35 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!11397 fuse: Initialize beyond-EOF page contents before setting uptodate 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yifan Qiao <qiaoyifan4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/EVZMRB25CESN6LYRJJLR4TU6ARW6MRI6/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAOAMF 
 
Link:https://gitee.com/openeuler/kernel/pulls/11397

 

Reviewed-by: default avatarZhang Peng <zhangpeng362@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents d3b25228 6eef5092

fs/fuse/dev.c

+4 −2
Original line number Diff line number Diff line
@@ -1618,9 +1618,11 @@ static int fuse_notify_store(struct fuse_conn *fc, unsigned int size, 


		this_num = min_t(unsigned, num, PAGE_SIZE - offset);

		err = fuse_copy_page(cs, &page, offset, this_num, 0);

		if (!err && offset == 0 &&

		    (this_num == PAGE_SIZE || file_size == end))

		if (!PageUptodate(page) && !err && offset == 0 &&

		    (this_num == PAGE_SIZE || file_size == end)) {

			zero_user_segment(page, this_num, PAGE_SIZE);

			SetPageUptodate(page);

		}

		unlock_page(page);

		put_page(page);