From: "Theodore Ts'o" <tytso@mit.edu>
To: Andreas Dilger <adilger.kernel@dilger.ca>,
Jan Kara <jack@suse.cz>,
linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org,
Li Chen <me@linux.beauty>
Cc: "Theodore Ts'o" <tytso@mit.edu>, stable@vger.kernel.org
Subject: Re: [PATCH v3] ext4: publish jinode after initialization
Date: Thu, 26 Mar 2026 07:57:46 -0400 [thread overview]
Message-ID: <177452625029.1205486.10688089869136424604.b4-ty@b4> (raw)
In-Reply-To: <20260225082617.147957-1-me@linux.beauty>
On Wed, 25 Feb 2026 16:26:16 +0800, Li Chen wrote:
> ext4_inode_attach_jinode() publishes ei->jinode to concurrent users.
> It used to set ei->jinode before jbd2_journal_init_jbd_inode(),
> allowing a reader to observe a non-NULL jinode with i_vfs_inode
> still unset.
>
> The fast commit flush path can then pass this jinode to
> jbd2_wait_inode_data(), which dereferences i_vfs_inode->i_mapping and
> may crash.
>
> [...]
Applied, thanks!
[1/1] ext4: publish jinode after initialization
commit: d4dfb4e294f762f0567c50ac6cd71ba02c976575
Best regards,
--
Theodore Ts'o <tytso@mit.edu>
prev parent reply other threads:[~2026-03-26 11:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-25 8:26 [PATCH v3] ext4: publish jinode after initialization Li Chen
2026-02-26 12:34 ` Jan Kara
2026-03-26 11:57 ` Theodore Ts'o [this message]
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