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Wong" , Yongpeng Yang Cc: Namjae Jeon , Sungjong Seo , OGAWA Hirofumi , Jan Kara , Carlos Maiolino , Jens Axboe , Greg Kroah-Hartman , Sasha Levin , Alexander Viro , Christian Brauner , Christoph Hellwig , linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, stable@vger.kernel.org, Matthew Wilcox , Yongpeng Yang References: <20251103163617.151045-2-yangyongpeng.storage@gmail.com> <20251103163617.151045-5-yangyongpeng.storage@gmail.com> <20251104154209.GA196362@frogsfrogsfrogs> Content-Language: en-US From: Yongpeng Yang In-Reply-To: <20251104154209.GA196362@frogsfrogsfrogs> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 11/4/25 23:42, Darrick J. Wong wrote: > On Tue, Nov 04, 2025 at 12:36:17AM +0800, Yongpeng Yang wrote: >> From: Yongpeng Yang >> >> sb_min_blocksize() may return 0. Check its return value to avoid the >> filesystem super block when sb->s_blocksize is 0. >> >> Cc: # v6.15 >> Fixes: a64e5a596067bd ("bdev: add back PAGE_SIZE block size validation >> for sb_set_blocksize()") > > Odd line wrapping, does this actually work with $stablemaintainer > scripts? > Sorry for my mistake. I’ve sent v6 patch to fix this issue. Yongpeng, >> Signed-off-by: Yongpeng Yang > > Otherwise looks fine to me > Reviewed-by: "Darrick J. Wong" > > --D > >> --- >> fs/xfs/xfs_super.c | 5 ++++- >> 1 file changed, 4 insertions(+), 1 deletion(-) >> >> diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c >> index 1067ebb3b001..bc71aa9dcee8 100644 >> --- a/fs/xfs/xfs_super.c >> +++ b/fs/xfs/xfs_super.c >> @@ -1693,7 +1693,10 @@ xfs_fs_fill_super( >> if (error) >> return error; >> >> - sb_min_blocksize(sb, BBSIZE); >> + if (!sb_min_blocksize(sb, BBSIZE)) { >> + xfs_err(mp, "unable to set blocksize"); >> + return -EINVAL; >> + } >> sb->s_xattr = xfs_xattr_handlers; >> sb->s_export_op = &xfs_export_operations; >> #ifdef CONFIG_XFS_QUOTA >> -- >> 2.43.0 >> >>