From: Lizhi Xu <lizhi.xu@windriver.com>
To: <viro@zeniv.linux.org.uk>
Cc: <brauner@kernel.org>, <jack@suse.cz>,
<linux-fsdevel@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<lizhi.xu@windriver.com>, <phillip@squashfs.org.uk>,
<squashfs-devel@lists.sourceforge.net>,
<syzbot+24ac24ff58dc5b0d26b9@syzkaller.appspotmail.com>,
<syzkaller-bugs@googlegroups.com>
Subject: Re: [PATCH V7] squashfs: Add symlink size check in squash_read_inode
Date: Mon, 5 Aug 2024 09:02:31 +0800 [thread overview]
Message-ID: <20240805010231.1197391-1-lizhi.xu@windriver.com> (raw)
In-Reply-To: <20240804212034.GE5334@ZenIV>
On Sun, 4 Aug 2024 22:20:34 +0100, Al Viro wrote:
> Alternatively, just check ->i_size after assignment. loff_t is
> always a 64bit signed; le32_to_cpu() returns 32bit unsigned.
> Conversion from u32 to s64 is always going to yield a non-negative
> result; comparison with PAGE_SIZE is all you need there.
It is int overflow, not others.
Please see my V7 patch,
Link: https://lore.kernel.org/all/20240803074349.3599957-1-lizhi.xu@windriver.com/
--
Lizhi
next prev parent reply other threads:[~2024-08-05 1:03 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-31 8:12 [syzbot] [squashfs?] KMSAN: uninit-value in pick_link syzbot
2024-08-01 2:27 ` [PATCH] filemap: Init the newly allocated folio memory to 0 for the filemap Lizhi Xu
2024-08-01 2:58 ` Al Viro
2024-08-01 5:28 ` Lizhi Xu
2024-08-01 7:10 ` Al Viro
2024-08-01 7:24 ` Al Viro
2024-08-01 8:12 ` Lizhi Xu
2024-08-01 9:13 ` Lizhi Xu
2024-08-01 12:42 ` Al Viro
2024-08-01 15:17 ` [PATCH V2] squashfs: Add length check in squashfs_symlink_read_folio Lizhi Xu
2024-08-01 15:30 ` Jan Kara
2024-08-02 1:39 ` Lizhi Xu
2024-08-02 1:50 ` [PATCH V3] squashfs: Add i_size check in squash_read_inode Lizhi Xu
2024-08-02 3:01 ` [PATCH V4] " Lizhi Xu
2024-08-02 9:33 ` Jan Kara
2024-08-02 11:16 ` [PATCH V5] " Lizhi Xu
2024-08-02 13:52 ` Al Viro
2024-08-02 14:44 ` [PATCH] filemap: Init the newly allocated folio memory to 0 for the filemap Lizhi Xu
2024-08-02 15:03 ` Al Viro
2024-08-03 4:07 ` [PATCH V6] squashfs: Add symlink size check in squash_read_inode Lizhi Xu
2024-08-03 7:43 ` [PATCH V7] " Lizhi Xu
2024-08-04 21:16 ` Phillip Lougher
2024-08-04 21:20 ` Al Viro
2024-08-04 22:31 ` Phillip Lougher
2024-08-05 7:03 ` Christian Brauner
2024-08-05 1:02 ` Lizhi Xu [this message]
2024-08-05 1:40 ` Al Viro
2024-08-06 2:56 ` Lizhi Xu
2024-08-06 4:59 ` Al Viro
2024-08-06 6:19 ` Lizhi Xu
2024-08-06 6:58 ` Al Viro
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