From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 EAA4E17741 for ; Thu, 21 Sep 2023 19:02:03 +0000 (UTC) Received: from mail-qv1-f80.google.com (mail-qv1-f80.google.com [209.85.219.80]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55406803F0 for ; Thu, 21 Sep 2023 12:01:59 -0700 (PDT) Received: by mail-qv1-f80.google.com with SMTP id 6a1803df08f44-65854d1f626so11316946d6.2 for ; Thu, 21 Sep 2023 12:01:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695322919; x=1695927719; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=lExL84plHs9XpBTTxEFLCXaT++DsJzvu8f+siPumnEU=; b=Wiso01O2LeY+bF8chJ4E7YELQGzxxzZCOOf8lkRydCeggPTFwrrgQoQkVclTePXS4E KjrE5tu6k+IuUiXmeQUuHuJufGd2Olvj/sIg7RoC5i6eFTu2K/lJlKTo09sgcXpX6RW0 xjL07WV0fx2yt3b9/5mOHEazWPHrlwjXSvuNSTduOjDoxgfmVcIXCBARRHWK/18gahgL fDRO5uIaJcB1TAFR3nFOYztlZsT9A4QX23zU+Ort75nh/6jo+jVinKcgpaoW+7L1R40Y 0mVJH9jZkib2HjdVPwYGwZut4IBQdlpr6Wzo9MA+jHMVxpuPA5NzxMPbvQUPslBwmHp1 Y10A== X-Gm-Message-State: AOJu0YwWZfqRSC91QoPNvHE+SoTTX9fw04gJGhYG4iaWhTUVL/Ue0brC ckWRJz3ewAukyCaoBbP+TdrPee5cMcKjuyNuSX3G2xB1SgH2 X-Google-Smtp-Source: AGHT+IGzwtLJCFhOShMYeh16/4hp+A6HqekIaDWfKz8uTxSoxI7pmKLeA3cisYoKrQI2l13RW1g996hLzfThoRXJAAFfb3N/FQ5t Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:17a6:b0:3a8:8b74:fd46 with SMTP id bg38-20020a05680817a600b003a88b74fd46mr2424160oib.8.1695289013246; Thu, 21 Sep 2023 02:36:53 -0700 (PDT) Date: Thu, 21 Sep 2023 02:36:53 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006d24f50605db3b41@google.com> Subject: [syzbot] [tipc?] KMSAN: uninit-value in __tipc_nl_bearer_enable (2) From: syzbot To: davem@davemloft.net, edumazet@google.com, jmaloy@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=2.4 required=5.0 tests=BAYES_00,DATE_IN_PAST_06_12, FROM_LOCAL_HEX,HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_BLOCKED, RCVD_IN_MSPIKE_H2,SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Level: ** X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Hello, syzbot found the following issue on: HEAD commit: 4a0fc73da97e Merge tag 's390-6.6-2' of git://git.kernel.or.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=15cc921c680000 kernel config: https://syzkaller.appspot.com/x/.config?x=a2fd75f3f45dd99 dashboard link: https://syzkaller.appspot.com/bug?extid=9425c47dccbcb4c17d51 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1737422c680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13c74c94680000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/28d14dd1284c/disk-4a0fc73d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a5ca8dd87357/vmlinux-4a0fc73d.xz kernel image: https://storage.googleapis.com/syzbot-assets/c7dda831a503/bzImage-4a0fc73d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9425c47dccbcb4c17d51@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in strscpy+0xc4/0x160 strscpy+0xc4/0x160 bearer_name_validate net/tipc/bearer.c:147 [inline] tipc_enable_bearer net/tipc/bearer.c:259 [inline] __tipc_nl_bearer_enable+0x634/0x2220 net/tipc/bearer.c:1043 tipc_nl_bearer_enable+0x3c/0x70 net/tipc/bearer.c:1052 genl_family_rcv_msg_doit net/netlink/genetlink.c:971 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline] genl_rcv_msg+0x11ec/0x1290 net/netlink/genetlink.c:1066 netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2545 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1075 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0xf47/0x1250 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2540 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2594 __sys_sendmsg net/socket.c:2623 [inline] __do_sys_sendmsg net/socket.c:2632 [inline] __se_sys_sendmsg net/socket.c:2630 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2630 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523 kmalloc_reserve+0x148/0x470 net/core/skbuff.c:559 __alloc_skb+0x318/0x740 net/core/skbuff.c:644 alloc_skb include/linux/skbuff.h:1286 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline] netlink_sendmsg+0xb34/0x13d0 net/netlink/af_netlink.c:1885 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2540 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2594 __sys_sendmsg net/socket.c:2623 [inline] __do_sys_sendmsg net/socket.c:2632 [inline] __se_sys_sendmsg net/socket.c:2630 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2630 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd CPU: 1 PID: 4993 Comm: syz-executor386 Not tainted 6.5.0-syzkaller-12145-g4a0fc73da97e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup