linux-ext4 - Re: [PATCH] ext4: check fast symlink for ea

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Message-ID: <175518289074.1126827.15003843586124325207.b4-ty@mit.edu>
Date: Thu, 14 Aug 2025 10:48:39 -0400
From: "Theodore Ts'o" <tytso@....edu>
To: Ext4 Developers List <linux-ext4@...r.kernel.org>,
        Andreas Dilger <adilger@...ger.ca>
Cc: "Theodore Ts'o" <tytso@....edu>, stable@...r.kernel.org,
        Andreas Dilger <adilger@...mcloud.com>,
        Li Dongyang <dongyangli@....com>, Alex Zhuravlev <bzzz@...mcloud.com>,
        Oleg Drokin <green@...mcloud.com>
Subject: Re: [PATCH] ext4: check fast symlink for ea_inode correctly


On Wed, 16 Jul 2025 19:36:42 -0600, Andreas Dilger wrote:
> The check for a fast symlink in the presence of only an
> external xattr inode is incorrect.  If a fast symlink does
> not have an xattr block (i_file_acl == 0), but does have
> an external xattr inode that increases inode i_blocks, then
> the check for a fast symlink will incorrectly fail and
> __ext4_iget()->ext4_ind_check_inode() will report the inode
> is corrupt when it "validates" i_data[] on the next read:
> 
> [...]

Applied, thanks!

[1/1] ext4: check fast symlink for ea_inode correctly
      commit: b4cc4a4077268522e3d0d34de4b2dc144e2330fa

Best regards,
-- 
Theodore Ts'o <tytso@....edu>