From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-221-210.mail.qq.com (out203-205-221-210.mail.qq.com [203.205.221.210]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A280E1B7FE for ; Mon, 15 Jan 2024 23:38:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="u5ejN0U8" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1705361895; bh=cz6IinuqhcZZWy7+5NFz+ILkSqS4auojx7jE1pMxmhw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=u5ejN0U8GLmwakf7b9WsHNnugxNTqBITNK2FyV5WGVox/Fk79QgG7LZdgJvpvgpQr pLoSCv+wTpQ6THQyqEYNiAZhOGdAgsHeFOn1tkgLYs4tFfF7O3EXDVy3jIvX22kI5R /x4zIFuHakYKHEp2uaCKvEyngiBFYoDcZ4dgX6nc= Received: from pek-lxu-l1.wrs.com ([111.198.225.215]) by newxmesmtplogicsvrszc5-1.qq.com (NewEsmtp) with SMTP id 8090DECD; Tue, 16 Jan 2024 07:32:09 +0800 X-QQ-mid: xmsmtpt1705361529tio0y97up Message-ID: X-QQ-XMAILINFO: NafziRg7Bx69+OV4WSENK3vpXadt+cQi1jkRzHoxn7eCx7k+C+Z9y/J0bfNC00 HeZXzJWnDLYi2TNbzLUENqQCv81K2tpaon7D9BUiAFqtFWmUfpYI12Nt6D5y60jAtU77yCm68Nkd vRYNqMWtIpfptD7JQVuVksuQ9M3x79LeC2Efj3OP/matWrcdbLBv5UFQg5bHhmNqbKcEnbI7lf0I C7PJECx5Gs8KvstfaD6b0fkF0EyLKfkK552Eb8iiCAKSF17xoARQIxrMawdGjA/c54QqrPqd50aL edIrHCcqT34eHQfmSp4ZvlmWyWnHw9M+NFNb8zc8M9u0XgfNeTTryHlk0yl7W48gO1I4pNV0UZ9S 169m5mowanaAreXYmS2D9xM+ZLnST6DM3FPqMq46ua6DDBIAgEwgADS1RoGKLkaClwsHZdkGYpqt JEJb0pdg4AX54SUD+U6NeCoPdwjTaqBOKZsFzfOZbDoMB6HPYHL4z2jxoy9vMrIxH67NXFZFYbLd cKk5y/iGPorvRy+7eVuL9VY96dt22hTUwO5Ww98ECzxtihe1nxwkoOKTg2YtyolDgeyiy2Rpps1v WSS3CR1ZfXr7TZ4jYuArJbHzLP6ota+X28cH7TJefYI2iRJDMzvVpVVsDq2f6N03ynCrfbi64mHB kdUxxPYQpyo5iBikD9PoqP4ljYfuQVMqMG8V3To21uPCHyJ7APF6hW7EG++cSL1J+QBP7eBU+5OF l2gJf55POkmCVuE84d5klCXSv4cyn/XmTfPbZPCtAKX0+1gMDFnqY26jTuyT9vzRl7Qv44DhEJhF SddH7WblxeGJENUnwlh1qtG5KxgzlqongiL2FQJX9CIh5uSI5GQ7ttiqoNXte+BelRP44jSnclOG 6xXOITsE5Eyd55Rpbv2iitTFGtFgdsWwl3aWdIguxKbCXo1BPo+U4TKsQumnZVxIv35PVYzytS X-QQ-XMRINFO: OD9hHCdaPRBwq3WW+NvGbIU= From: Edward Adam Davis To: syzbot+33f23b49ac24f986c9e8@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [btrfs?] KASAN: slab-out-of-bounds Read in getname_kernel (2) Date: Tue, 16 Jan 2024 07:32:10 +0800 X-OQ-MSGID: <20240115233209.4164697-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <000000000000d1a1d1060cc9c5e7@google.com> References: <000000000000d1a1d1060cc9c5e7@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit please test slab-out-of-bounds Read in getname_kernel #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 3bd7d7488169 diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index 1502d664c892..58ffaede8d16 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -741,6 +741,8 @@ int btrfs_dev_replace_by_ioctl(struct btrfs_fs_info *fs_info, if ((args->start.srcdevid == 0 && args->start.srcdev_name[0] == '\0') || args->start.tgtdev_name[0] == '\0') return -EINVAL; + args->start.srcdev_name[BTRFS_PATH_NAME_MAX] = 0; + args->start.tgtdev_name[BTRFS_PATH_NAME_MAX] = 0; ret = btrfs_dev_replace_start(fs_info, args->start.tgtdev_name, args->start.srcdevid,