Unverified Commit 9eaf0479 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!12824 f2fs: fix to avoid use-after-free in f2fs_stop_gc_thread() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Long Li <leo.lilong@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/PGC6PFWLHJ3PRF26SKAV23QQE7A6BIZJ/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAYPJO 
 
Link:https://gitee.com/openeuler/kernel/pulls/12824

 

Reviewed-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents 334fac02 2bb3611c

fs/f2fs/file.c

+5 −0
Original line number Diff line number Diff line
@@ -2296,12 +2296,17 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) 
		goto out;

	}



	/* grab sb->s_umount to avoid racing w/ remount() */

	down_read(&sbi->sb->s_umount);



	f2fs_stop_gc_thread(sbi);

	f2fs_stop_discard_thread(sbi);



	f2fs_drop_discard_cmd(sbi);

	clear_opt(sbi, DISCARD);



	up_read(&sbi->sb->s_umount);



	f2fs_update_time(sbi, REQ_TIME);

out:

	if (in != F2FS_GOING_DOWN_FULLSYNC)