From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out162-62-58-216.mail.qq.com (out162-62-58-216.mail.qq.com [162.62.58.216]) (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 7AA841370 for ; Wed, 10 Jan 2024 01:53:19 +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="izPl7wUE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1704851290; bh=WADTRuNZWVYJEL3cfbTGZCRVmfJ/vhyQUOQ0+rj1YFA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=izPl7wUE2XkaiVjIYyxDSjwQjt8eWiLEc9n1LzAc3cKLpzru30x/gqRtCuZWtUw8f wQIRGA+a9PC55Y2Xu9MgXhlnjrDEUO8Yw/HfHLTosQrOY8fkCdfxp5+9vweJvpJUb3 lwVRibmSt26xRhvH+1r9juuKDtOCwa//D6ietBYk= Received: from pek-lxu-l1.wrs.com ([111.198.225.215]) by newxmesmtplogicsvrszb9-1.qq.com (NewEsmtp) with SMTP id C08334DB; Wed, 10 Jan 2024 09:48:08 +0800 X-QQ-mid: xmsmtpt1704851288t3g396uij Message-ID: X-QQ-XMAILINFO: NKv2G1wnhDBnqRB1Nzj+yffX5ESIn+rw2d7uk2JfMG3PIbcIAX0toHChd9IwS8 xkSH5Q4yF3A5KuVdBNcLMKkyY1AEZr2FMqZ8vWuYbA2XLzouWJOX3oA6MWBoj70EwMx5dWIgbD7P dEhoKukl2Q9/0TpNSZsbbM/bMt0+VTfhyFM+0nk3LoxXVH1wfRbpvQ6qL/i4Wt5xlZ7i0vtTy0bg PrL2ejH+IzHuN0ws2vAAiQiRGy50pttDZKXiWlGbtZgu9kqUhfZr47DwZ3ygTLbOQYBKsAaJnQbu Ee1HDh79MIMT50Kg+1iS1m/E21btY82Eg0SbMlAOcdfYUtdgQIh7w3O5co8mtyh1PeBVLO5Ms7Mx hAb8GbwDe3x8yJO0DmVG9FBcPmH3pEyrim15XBkDM7+5FxDnOtyZWuxWAVyUGfAZSyqeTEC/C4kW vPkH1NSfgduYMtT96VbstV2rZy04zEs8JafPqcOQUOjrtTflftfgsgcbUrRe3o1NgW5Syj7x0Wat FqcMG4849Ach2XNzivTs3CHZk6XjLNPY3ko+ZiJI/dymfAxdf0jGLViwQ1KDuGTE8Ro+GMMELGmy +425uXD5ZK403GkNF0AMedLtDuc6zajmDJV0GHKdRwsFlLggrZSQSY+WPiErHbEC3YHa/uqiJfDl GdHLHlfpgimOitxZ38w0yi9rSQ+htAIFzdpoOrzIdMQLj8bOcYJfrTcK0XMauasDCtg8Lj4Mqxxn n4IgMN8E6Ua8xRgWUYyTJ1ORBIqLPIL1ojP2i70/LgWdo2jXv2Wj1m5HYFrTfhcpBgAHZXDLcmKN 7/EPXGxddJAcbJgAWAGc2tDRKB+RsoctZCu9c5IzWeyVqQ9NDn8HLo0HQmu+yL/99yImNgT6IHU1 SYbv5kVlfw6TRDGXEYuSQSFDSYuXPib67vwRdJE4BQxoC4wSowfpQ= X-QQ-XMRINFO: OD9hHCdaPRBwq3WW+NvGbIU= From: Edward Adam Davis To: syzbot+91db973302e7b18c7653@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [hfs?] KMSAN: uninit-value in hfsplus_lookup Date: Wed, 10 Jan 2024 09:48:08 +0800 X-OQ-MSGID: <20240110014808.1250721-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <000000000000212ec9060e8754e2@google.com> References: <000000000000212ec9060e8754e2@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 uninit-value in hfsplus_lookup #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 861deac3b092 diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 1986b4f18a90..a95a6a2246a3 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -73,6 +73,7 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino) HFSPLUS_I(inode)->flags = 0; HFSPLUS_I(inode)->extent_state = 0; HFSPLUS_I(inode)->rsrc_inode = NULL; + HFSPLUS_I(inode)->create_date = 0; atomic_set(&HFSPLUS_I(inode)->opencnt, 0); if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||