Commit 25ae837e authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: fix to avoid accessing invalid fio in f2fs_allocate_data_block() 



Callers may pass fio parameter with NULL value to f2fs_allocate_data_block(),
so we should make sure accessing fio's field after fio's validation check.

Fixes: f608c38c ("f2fs: clean up parameter of f2fs_allocate_data_block()")
Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent a303b0ac

fs/f2fs/segment.c

+3 −3
Original line number Diff line number Diff line
@@ -3417,12 +3417,12 @@ void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, 
		f2fs_inode_chksum_set(sbi, page);

	}



	if (F2FS_IO_ALIGNED(sbi))

		fio->retry = false;



	if (fio) {

		struct f2fs_bio_info *io;



		if (F2FS_IO_ALIGNED(sbi))

			fio->retry = false;



		INIT_LIST_HEAD(&fio->list);

		fio->in_list = true;

		io = sbi->write_io[fio->type] + fio->temp;