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s=s201512; t=1705532391; bh=Tx5/LMsBTm44kzFQz5r7HA6ynuPsj+cBA3RvPfiZMlY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=oJJimgGU5cs8o2UgNK6wzm4bv7X0iRZquEf7gknYyiKrqmCMXZ8XTdZSrHkwxRcwu WZfzeyEdOr0LILL7zLTFbKP8sB8LafAQOzkl6gi0xYbxLgeceVmdYhD5RFij0KAEFc zjRH5noztBQY96Y78QrsThcHO/NCupQdKYTt4ywM= Received: from pek-lxu-l1.wrs.com ([111.198.225.215]) by newxmesmtplogicsvrszc5-0.qq.com (NewEsmtp) with SMTP id D6EAFE7F; Thu, 18 Jan 2024 06:53:46 +0800 X-QQ-mid: xmsmtpt1705532026t0bff7cu6 Message-ID: X-QQ-XMAILINFO: Mm/8i8/T4yne3NoY8aU/S8yiD/jSml9ERdkv00aE8veahf1GW9yISaT/ZTZH+8 Xi96g17tFUSjZIDz+P8DgsJYpq9uWoyfcR4bfVzB06HHRf3aAi6/GC3P+SktXz/DAtc1PX1T7N0f CbR4YJfT94MC2qHpXia6PnGDb9C6z40rnjmNRGBH7yrcXsWGdgZlrjFPaztzTRUrlPYzbYw1liur 48JHG/VCR+GpvUd0KkY4J0VMpuLAX/X0lk24e+nAiXndfoDWyEoZdb9EYBCWyl6+45eFoZgFzER4 tk/6wOFDmHOSWI9FUsDr6OuxsAmO0cy/TBseQILKrLKNf1Z1cK41m9E3GTT4XKqDeN43b1OzVX8A GHgos3MKhDa2tdtq+BS0YiTnz3zYkA1D58wUg3LgiQxWJF2/0Qqklbw8q9kvL9UO8Su76KkGOvcM pLdTYBH6msMFnDqWFxXuQd0VSDCPCQvFli+1GOWZ/Fc3WrhAZUMxwDVmQvP/sdQJ4Z59WHdLp7hQ +R//CDZ/+g2wAurAA4nSJQSJoYkpTYQ1vC49uyNjY5FgnP2zi97DulNrw1+v/tGCnvWDSFO2mtky Nk0hYdHQZWedMfK2eNtRjL4M+vOuRIi8od9GXUn65+RCs9ViWibTI2hhPrDDI3Cf0cECK8pt3O9P 3o7andfUSB51+xz2b+6ACqK29NT2EJQwrqK6z+GMbLQm9yBv/oHHPXK4l+JhO/b82wPlin536nns f1rr1YoJwH6TkUJx1w9KffT7/d5NmEGA8oBpO4N54N2FAEbCeui+2wzPCXVLHQLgBER2jP5CXZ+x LQELSn6i34+Mk/LmvAMDfyhZfVF3capcN9vYZM7oiFrcCY+Be5X1HQsfxocEeRrco8zG9OtUV/Cp 9odzmuVmSPNeKVCBHDV2Z5sF2zsc3qNULPqQ5wuB1xpd5vIt7SQG4U59bQKsH/yfNhUwDeeUVo X-QQ-XMRINFO: NyFYKkN4Ny6FSmKK/uo/jdU= From: Edward Adam Davis To: syzbot+830d9e3fa61968246abd@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [bluetooth?] general protection fault in btintel_read_version Date: Thu, 18 Jan 2024 06:53:47 +0800 X-OQ-MSGID: <20240117225346.2504179-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <000000000000cde441060f230f4f@google.com> References: <000000000000cde441060f230f4f@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 null ptr deref in btintel_read_version #syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index cdc5c08824a0..e5b043d96207 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -435,7 +435,7 @@ int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver) struct sk_buff *skb; skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT); - if (IS_ERR(skb)) { + if (IS_ERR_OR_NULL(skb)) { bt_dev_err(hdev, "Reading Intel version information failed (%ld)", PTR_ERR(skb)); return PTR_ERR(skb);