diff options
| author | Yongpeng Yang <yangyongpeng@xiaomi.com> | 2025-11-04 20:50:08 +0800 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-11-05 14:00:16 +0100 |
| commit | e106e269c5cb38315eb0a0e7e38f71e9b20c8c66 (patch) | |
| tree | 4d2424de7837977f832212644cde4ba1225c9738 | |
| parent | f2c1f631630e01821fe4c3fdf6077bc7a8284f82 (diff) | |
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: 1b17a46c9243e9 ("isofs: convert isofs to use the new mount API")
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Yongpeng Yang <yangyongpeng@xiaomi.com>
Link: https://patch.msgid.link/20251104125009.2111925-4-yangyongpeng.storage@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/isofs/inode.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index 6f0e6b19383c..ad3143d4066b 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -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; |