From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-251-60.mail.qq.com (out203-205-251-60.mail.qq.com [203.205.251.60]) (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 B16806FB4 for ; Tue, 19 Dec 2023 02:50:19 +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="AdBz5rUb" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1702954211; bh=fx4Vq1IRsoxvEZorGn+e25uwOhwhE3vurKzrsuuY8xE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=AdBz5rUbq9xM0IhO7sJc5Po8qLSkPYx1sCtUwk3K3LPHeH+jjlGhhXW9QONPWqvE1 GSONWVgqi1pNG7HmIbWGfpJx9dewCB8odYa8GqHrUj909gZmvW0Kc4HVUDLIEkls7J avR4quLD9OKzfAItEtabrqn4fSzmA7Nk+EJvmuNA= Received: from pek-lxu-l1.wrs.com ([111.198.225.215]) by newxmesmtplogicsvrszb9-1.qq.com (NewEsmtp) with SMTP id B08AA66F; Tue, 19 Dec 2023 10:44:08 +0800 X-QQ-mid: xmsmtpt1702953848td32815ne Message-ID: X-QQ-XMAILINFO: OQhZ3T0tjf0aO645nJ9CGVGCZ0peyCcOfUaHu+z1G2hkBfNYqSB4zFQ9uaT41o B4s03/R4AYmnwsEKje1NuFoJJG8jhBb19IL7bRP0qWh/lNZ4M3Y8+zU4je5rrUig0SoUK0HkZNIX L1fhIoaxrT5k8XUrneEZ8TAmwf/BWhOX71sguovwvk/ne2Aue5Xx6tDO9OT6rzB7gZXym7AY/vGy KJjINiVyU5uZix2ztbfoA/qY7IaVmS85CWkfg71GJfcKPCSUd7YDJg3/Ll7vpYquEYXIue+4lihg FSPC176NsC93z9uOrpJfw2KsClW8YA1R9XRofRz1c8QW0gU5yG7xBymZFaVJlFiMG73pQrdPMNRe YDheZfGZVLJ8rHRwJ9J8J+gNMnDgiFHZEh+sVv4Wf8F9RJyFCxbIAJECEW8ilIBkBddZovbR8N0L btC25yPyo2UFFRBbV/J6P23LJ51gVvDwHPMqCTNp9O2Ro7+RIwEmozNaBI55tQwl1K6DRxj4bJqw k9Jxpz00BuLda1ZspE1PY0vxvTpPg5PoS8D0k8vj/MX4MmTV/b5yZMsGZgrkDFCZrvsyhkmqJzg9 xvYWCnvcPDGem5oUh5t9TGGj1At6t55I4Zq/oDDrE9WPeuJU+6/SGzf/8XZ00CEp4YyS3ir03MI5 rzKDbQbm8+UonNchLUz5A2dgjtriC6AirnyIPGyQ7rCE2mo2Ea3DIAaio8XwlHj05be/YdAas+O8 6RLOf2HqQxp029C1w/Kx7QteTTo8v0d4uEHA2mVboEpr2Smda3gjLC1KZUXbrbhTpx5p85Dx90zI DsSKoTNkEOHUOLzKnttksWkiz1fDO1+Wi2WSeZfmQpaZsBQlJssw5b9ArPuPp5TG5jh0rgyjeOMB GtJgVBPN/qanC+zyXMoQ3ItSqyddKjdWg9ZPaVEz2yDsL1jjCZuNw= X-QQ-XMRINFO: M/715EihBoGSf6IYSX1iLFg= 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, 19 Dec 2023 10:44:09 +0800 X-OQ-MSGID: <20231219024408.1603815-2-eadavis@qq.com> X-Mailer: git-send-email 2.42.0 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 f9544fda38e9..b7e8392d34dc 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -741,7 +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') + args->start.tgtdev_name[0] == '\0' || + args->start.tgtdev_name[0] == '') return -EINVAL; ret = btrfs_dev_replace_start(fs_info, args->start.tgtdev_name,