From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 20EE034F473 for ; Tue, 18 Nov 2025 13:28:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763472485; cv=none; b=eDT5AQgO5s/kwAaGYLMNI9umIRg7F5bXJWN7Y4hQN5rSqTsPnBZoMnPB5WIledj8eqvuqMOwAqDsvbRhwbYgtG69wfZN3V0k1U+qQUieNeW37fTKm3+l+mFUiByLI5mwG6NlopuTltFm2AiooRv+Lf+8wLiZwye9zK689ZongVE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763472485; c=relaxed/simple; bh=B3FWgYI+7TeMSac8x32y7Xl6JBDZ+YY/Irv1bccSFMA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=uFKRuvazwB3hCXed+uUT8TfuhFnz1BLTprDxj+abV/ZdwcZDQ3Gbdyz8kwuuy0nFvYnuk5F453pGwB3mIs6f3ExpWatglKEw4r+XlyP7vYiTQu/SuMV30SCGJCR3ibsb+5VT5sS85uhWn5ma7eEDm11BfiIGDwcEttBvTKsh+kY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f197.google.com with SMTP id e9e14a558f8ab-43323ffc26bso50835355ab.0 for ; Tue, 18 Nov 2025 05:28:02 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763472482; x=1764077282; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=zTaeoNYvoE9FvloyNeM6j2i14HdbFcMnF2Cq6y2AS4s=; b=dU+AiIaalwwuq73tyIE64H8EOC3BD4cDZWVxICHSHK3jt2GLT8nDecgBHes5EFZDSP ggOlI7xMh5CUeRDjrHBC9VuEJoccrbzCzFeZ8g97tmu3d4UCCZ7dEvrap7sEuLHIZ2Q/ 8nDRATiF8ph/2MEedz/ZVe+HMys3ON5ybcWXOAXeyvzp8+WXRQGCEkKioc3xLsSMqS8s HK29wmozfbrHCd3ABpbSIDeiiCO0YNsWl69I5mJM0Q5YU7lvd1kI5A7yzFvAEEg+1LEh E251EstONMHI5dUXVV+0LTo5sykgJaFUZZchSfFW95uAN6U9x9xUCrs84haA4rh4Wtks 0yaA== X-Forwarded-Encrypted: i=1; AJvYcCVj78EcBIPImEfFRbiDJuBUNDwhZsemsY3FF6HWcTb1XFUVms8z6/buoDJ1dzTY3R4gNsPNEwpmbL1VAK4=@vger.kernel.org X-Gm-Message-State: AOJu0YyfFyj26uFkvSXWNopM8tGiFmdVbtMk8s19RcD//ektw8XeHQcy +dfF553V1C65xKEVC6/YhI+Gn1y1VS6atMKLk3mym7W3P3FLEFlYesUqf69hfWjtoXry1P4/JK3 BHIAiqvxQDHcD5Wlh3QRpkQAQfoensNLUR0LW+4A+z++ZvMgOep8GewEMADk= X-Google-Smtp-Source: AGHT+IGTcHoe774MBP79fsecXFfNwCL89/GpldzduHjxcMazxbg7lT42fG3PikI+uk59arUS+Uc/1fAweYeH0hTMplDdTb11jAFf Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1845:b0:434:70bd:8b47 with SMTP id e9e14a558f8ab-4348c8be2acmr200482115ab.11.1763472482019; Tue, 18 Nov 2025 05:28:02 -0800 (PST) Date: Tue, 18 Nov 2025 05:28:02 -0800 In-Reply-To: <0f7bf1a1-7708-b253-fd8a-3bfbefe4e309@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <691c7462.a70a0220.3124cb.00c8.GAE@google.com> Subject: Re: [syzbot] [tipc?] KMSAN: uninit-value in tipc_rcv (2) From: syzbot To: hariconscious@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: kernel BUG in tipc_buf_acquire tipc: Started in network mode tipc: Node identity d24fb5aaf302, cluster identity 4711 skbuff: skb_over_panic: text:ffffffff8fe5599a len:376 put:300 head:ffff88811965d340 data:ffff88811965d410 tail:0x248 end:0x180 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:212! Oops: invalid opcode: 0000 [#1] SMP PTI CPU: 1 UID: 0 PID: 6630 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:skb_panic+0x2d3/0x340 net/core/skbuff.c:212 Code: d0 44 8b 45 cc 4c 8b 8d 58 ff ff ff 41 52 ff b5 70 ff ff ff ff b5 68 ff ff ff ff b5 60 ff ff ff e8 b2 5e ee ff 48 83 c4 20 90 <0f> 0b e8 56 88 69 01 48 83 7d a0 00 0f 84 6a ff ff ff 48 8b 7d c0 RSP: 0018:ffff888045ee30d0 EFLAGS: 00010282 RAX: 0000000000000089 RBX: ffff888118a30ba0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffff888045ee3188 R08: ffffea000000000f R09: 0000000000000000 R10: ffff888237c7f028 R11: ffff88823f277d80 R12: 000000000734019a R13: 000000000734019a R14: 0000000000000000 R15: 0000000000000000 FS: 00007f60ea3b56c0(0000) GS:ffff8881ab08c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002280 CR3: 000000004a6b6000 CR4: 00000000003526f0 Call Trace: skb_over_panic net/core/skbuff.c:217 [inline] skb_put+0x1f5/0x250 net/core/skbuff.c:2583 skb_put_zero include/linux/skbuff.h:2788 [inline] tipc_buf_acquire+0x16a/0x280 net/tipc/msg.c:76 tipc_disc_create+0x12f/0x870 net/tipc/discover.c:359 tipc_enable_bearer net/tipc/bearer.c:348 [inline] __tipc_nl_bearer_enable+0x1f61/0x2a00 net/tipc/bearer.c:1047 __tipc_nl_compat_doit net/tipc/netlink_compat.c:371 [inline] tipc_nl_compat_doit+0x67b/0xa10 net/tipc/netlink_compat.c:393 tipc_nl_compat_handle net/tipc/netlink_compat.c:-1 [inline] tipc_nl_compat_recv+0x1007/0x1670 net/tipc/netlink_compat.c:1321 genl_family_rcv_msg_doit+0x338/0x3f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xacf/0xc10 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x54d/0x680 net/netlink/af_netlink.c:2552 genl_rcv+0x41/0x60 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0xf04/0x12b0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x10b3/0x1250 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x333/0x3d0 net/socket.c:742 ____sys_sendmsg+0x7e0/0xd80 net/socket.c:2630 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2684 __sys_sendmsg net/socket.c:2716 [inline] __do_sys_sendmsg net/socket.c:2721 [inline] __se_sys_sendmsg net/socket.c:2719 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2719 x64_sys_call+0x1dfd/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f60e958eb69 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f60ea3b5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f60e97b6080 RCX: 00007f60e958eb69 RDX: 0000000000000000 RSI: 00002000000002c0 RDI: 0000000000000006 RBP: 00007f60e9611df1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f60e97b6080 R15: 00007fffe206b658 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x2d3/0x340 net/core/skbuff.c:212 Code: d0 44 8b 45 cc 4c 8b 8d 58 ff ff ff 41 52 ff b5 70 ff ff ff ff b5 68 ff ff ff ff b5 60 ff ff ff e8 b2 5e ee ff 48 83 c4 20 90 <0f> 0b e8 56 88 69 01 48 83 7d a0 00 0f 84 6a ff ff ff 48 8b 7d c0 RSP: 0018:ffff888045ee30d0 EFLAGS: 00010282 RAX: 0000000000000089 RBX: ffff888118a30ba0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffff888045ee3188 R08: ffffea000000000f R09: 0000000000000000 R10: ffff888237c7f028 R11: ffff88823f277d80 R12: 000000000734019a R13: 000000000734019a R14: 0000000000000000 R15: 0000000000000000 FS: 00007f60ea3b56c0(0000) GS:ffff8881ab08c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002280 CR3: 000000004a6b6000 CR4: 00000000003526f0 Tested on: commit: e7c375b1 Merge tag 'vfs-6.18-rc7.fixes' of gitolite.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15607884580000 kernel config: https://syzkaller.appspot.com/x/.config?x=dab646ad75fa9d4a dashboard link: https://syzkaller.appspot.com/bug?extid=9a4fbb77c9d4aacd3388 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=17fa2fcd980000