From: Edward Adam Davis <eadavis@qq.com>
To: syzbot+c2cfe997245202e46f10@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [ntfs3?] KMSAN: uninit-value in ni_seek_data_or_hole
Date: Tue, 26 May 2026 14:35:31 +0800 [thread overview]
Message-ID: <tencent_8E41CFB50D97A5D70DAC92175D8CDD919907@qq.com> (raw)
In-Reply-To: <6a150a09.820a0220.e7972.0005.GAE@google.com>
#syz test
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 7b035da63c12..d511b6a75ae8 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -2859,6 +2859,11 @@ loff_t ni_seek_data_or_hole(struct ntfs_inode *ni, loff_t offset, bool data)
return err;
}
+ if (!clen) {
+ /* Corrupted file. */
+ return -EINVAL;
+ }
+
if (lcn == RESIDENT_LCN) {
/* clen - resident size in bytes. clen == ni->vfs_inode.i_size */
if (offset >= clen) {
@@ -2909,10 +2914,6 @@ loff_t ni_seek_data_or_hole(struct ntfs_inode *ni, loff_t offset, bool data)
}
}
- if (!clen) {
- /* Corrupted file. */
- return -EINVAL;
- }
}
}
next prev parent reply other threads:[~2026-05-26 6:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-26 2:48 syzbot
2026-05-26 6:35 ` Edward Adam Davis [this message]
2026-05-26 7:35 ` syzbot
2026-05-26 8:08 ` [PATCH] fs/ntfs3: prevent potential lcn remains uninitialized Edward Adam Davis
2026-06-10 10:43 ` Konstantin Komarov
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