From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73967C433EF for ; Fri, 29 Oct 2021 06:35:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 53EF1610CB for ; Fri, 29 Oct 2021 06:35:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232113AbhJ2Ghw (ORCPT ); Fri, 29 Oct 2021 02:37:52 -0400 Received: from mail-il1-f200.google.com ([209.85.166.200]:36395 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232095AbhJ2Ghs (ORCPT ); Fri, 29 Oct 2021 02:37:48 -0400 Received: by mail-il1-f200.google.com with SMTP id w10-20020a056e021a6a00b0025be678c27eso4067259ilv.3 for ; Thu, 28 Oct 2021 23:35:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=J5Iak1jbzsXlXScJo28fGKWHSz8PYkl1htafvPcEf8I=; b=rGFcd4to5CxYQcgrNKqcrE8EBCs6iVkiWTYa9TIni/q58FUvBNZly9oUfI6ZmYpkMI vy2Z3QsezwWZs7cgOcr67Mxx95BNOD6Wc44mpm+ejdebymhNKODT9ek5Qc2/+K4iF6rW ijv1sLAlJBOGpAQNldzs9DfVyn7nojCfb9Asaa0U/B7lrJcLDjgpX/DZDnbkrkR8cgQa Meeq5RSolZWSu3jFaEB8khpLKCP/5rHL6OTQXLrvt1ZpMrdbQI+wLqxhBu/r6vKAuzwj UnZ8ypRQ58mML5HHJhpSuEkFAzHnkR7dWZy0voNyy7Ei5lZOfWHoHzuTsnLi7FKJzuST qhtQ== X-Gm-Message-State: AOAM530YEjuRLFkntfYBc9ccgpUYpj0Hc498Q41EQjiIEzn46/OpbKt9 xWvdFaM2z7PWuBTc3q2ypP+zjIrVH1QAm/B5CP51ddPsqahL X-Google-Smtp-Source: ABdhPJwzYUNIF+88XIaTqHIhDJWNunmOteoFoXYLDu2GKr0U5jX/3QDj8NPfXuUrl/5cxz0sS4nqjr/7x0IzsCXdyOoNSnO14VCV MIME-Version: 1.0 X-Received: by 2002:a92:d752:: with SMTP id e18mr6445635ilq.31.1635489320130; Thu, 28 Oct 2021 23:35:20 -0700 (PDT) Date: Thu, 28 Oct 2021 23:35:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f5dc0805cf7807a7@google.com> Subject: [syzbot] KMSAN: uninit-value in hci_conn_request_evt From: syzbot To: davem@davemloft.net, glider@google.com, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 82e66ad2e586 kmsan: core: better comment git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=157ae0e2b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=3ea742e10a5398fb dashboard link: https://syzkaller.appspot.com/bug?extid=8f84cf3ec5c288e779ef compiler: clang version 14.0.0 (git@github.com:llvm/llvm-project.git 0996585c8e3b3d409494eb5f1cad714b9e1f7fb5), GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8f84cf3ec5c288e779ef@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in hci_proto_connect_ind include/net/bluetooth/hci_core.h:1460 [inline] BUG: KMSAN: uninit-value in hci_conn_request_evt+0x220/0x1290 net/bluetooth/hci_event.c:2783 hci_proto_connect_ind include/net/bluetooth/hci_core.h:1460 [inline] hci_conn_request_evt+0x220/0x1290 net/bluetooth/hci_event.c:2783 hci_event_packet+0x1489/0x22e0 net/bluetooth/hci_event.c:6315 hci_rx_work+0x6ae/0xd10 net/bluetooth/hci_core.c:5136 process_one_work+0xdc7/0x1760 kernel/workqueue.c:2297 worker_thread+0x1101/0x22b0 kernel/workqueue.c:2444 kthread+0x66b/0x780 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 Uninit was created at: slab_alloc_node mm/slub.c:3221 [inline] __kmalloc_node_track_caller+0x8d2/0x1340 mm/slub.c:4955 kmalloc_reserve net/core/skbuff.c:355 [inline] __alloc_skb+0x4db/0xe40 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1116 [inline] bt_skb_alloc include/net/bluetooth/bluetooth.h:389 [inline] vhci_get_user drivers/bluetooth/hci_vhci.c:165 [inline] vhci_write+0x182/0x8f0 drivers/bluetooth/hci_vhci.c:285 call_write_iter include/linux/fs.h:2163 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x1295/0x1f20 fs/read_write.c:594 ksys_write+0x28c/0x520 fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __x64_sys_write+0xdb/0x120 fs/read_write.c:656 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x44/0xae ===================================================== Kernel panic - not syncing: panic_on_kmsan set ... CPU: 1 PID: 6390 Comm: kworker/u5:1 Tainted: G B 5.15.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci0 hci_rx_work Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1ff/0x28e lib/dump_stack.c:106 dump_stack+0x25/0x28 lib/dump_stack.c:113 panic+0x44f/0xdeb kernel/panic.c:232 kmsan_report+0x2ee/0x300 mm/kmsan/report.c:168 __msan_warning+0xb4/0x100 mm/kmsan/instrumentation.c:199 hci_proto_connect_ind include/net/bluetooth/hci_core.h:1460 [inline] hci_conn_request_evt+0x220/0x1290 net/bluetooth/hci_event.c:2783 hci_event_packet+0x1489/0x22e0 net/bluetooth/hci_event.c:6315 hci_rx_work+0x6ae/0xd10 net/bluetooth/hci_core.c:5136 process_one_work+0xdc7/0x1760 kernel/workqueue.c:2297 worker_thread+0x1101/0x22b0 kernel/workqueue.c:2444 kthread+0x66b/0x780 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This report is generated by a bot. 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