Unverified Commit e106e269 authored by Yongpeng Yang's avatar Yongpeng Yang Committed by Christian Brauner
Browse files

isofs: check the return value of sb_min_blocksize() in isofs_fill_super 



sb_min_blocksize() may return 0. Check its return value to avoid
opt->blocksize and sb->s_blocksize is 0.

Cc: stable@vger.kernel.org # v6.15
Fixes: 1b17a46c ("isofs: convert isofs to use the new mount API")
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarYongpeng Yang <yangyongpeng@xiaomi.com>
Link: https://patch.msgid.link/20251104125009.2111925-4-yangyongpeng.storage@gmail.com


Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent f2c1f631

fs/isofs/inode.c

+5 −0
Original line number Diff line number Diff line
@@ -610,6 +610,11 @@ static int isofs_fill_super(struct super_block *s, struct fs_context *fc) 
		goto out_freesbi;

	}

	opt->blocksize = sb_min_blocksize(s, opt->blocksize);

	if (!opt->blocksize) {

		printk(KERN_ERR

		       "ISOFS: unable to set blocksize\n");

		goto out_freesbi;

	}



	sbi->s_high_sierra = 0; /* default is iso9660 */

	sbi->s_session = opt->session;