From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f80.google.com (mail-oo1-f80.google.com [209.85.161.80]) (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 1877320E023 for ; Sat, 10 Jan 2026 07:57:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768031845; cv=none; b=gYR6Qu+UcAuV/3XjjZrzlW/rEwOBWPfPfSr/hHwfWvzEZfm1oKiJeVZWWOC//DDLtvU0BPWciHmviTor4/r0hzP3HWfbZhKJEIuNLzcCclxI6N9VkWlvTZDvObhW2YjxK7NiifZyJkqm2QacqRqU0pI0H6y9Uq/h506Nn7j8V00= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768031845; c=relaxed/simple; bh=qT0nlE9tP6XTFN3uMUBBISQotht1yGyI09whZj5T12c=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=sk6j8uu3Q/Oe1JCHsiJcuDymo2RtLcpt9CJdjZVGegPU00wnb2LLL6cuKfUatgvsVt1pATytOC7F0R2X6FtWh/Koqm0FvrnMyTCe7B+jLNCCni7voz9VlNugqXolH8eX2+ntibJqJrVWlVrP5yuecTPCLphxt27r3/kJtY02X1U= 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=209.85.161.80 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-oo1-f80.google.com with SMTP id 006d021491bc7-65f66b8be64so3880347eaf.3 for ; Fri, 09 Jan 2026 23:57:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768031843; x=1768636643; 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=3CKtBPBJN1VTx68R0gwqmuLhPZDrkNKJvv91rwrlpCo=; b=eT/AHdZYqBGau8HbERua+Xk9ebM4at7aDHf8//nlH0vG/oE/54H0dv4ZeROoWC832x IXxalOUXpgm489/lULb+46DFCnw6+KFNp2CWEHM6Sjls0H7xW/zJU6yd12qY9uFhrd0R 4wc2HZpUCH+PQPBGD3fg0GbNvTLcRHUfAu71cUWDxNbGyEJEN7c/1SNnw1gb/mIPADkM BYPDdQBhRwHWcpDCz88VG0d6aX1Xz/28AEVDdgIfuGY9O/isCUiLD9WYekg/7kBrgbBP VmZVR0iTxScPgFe9RSNBkJ4cMaAI6Anf3XLkBltzg88YngsW16D9uFY24pImrlU1H9pr BhZw== X-Forwarded-Encrypted: i=1; AJvYcCU3vc0R5M7547KWAcIgk9bUHF/IdZc9CAspWUqDdD9xkqJVq36qpx3BYQZPUtwDie8N0TDuR84=@vger.kernel.org X-Gm-Message-State: AOJu0YxW1hva0qCK3gXDG46LNEadXZht8COWGAOm5q2PbVcuHHqMVU6s BHSdcB3cn+ifS2+45b0+bkXcePZBKAa+zaGVEOKUlhh9sCZSN1WR8mAvHQJMRvUsiAmnRZFHi5J H5qDzYIQqBagz80KQgEA9/IgYUwpmTpmBTyLVJ2m0PVAPtw1canORgE/kAZY= X-Google-Smtp-Source: AGHT+IFV6oKsA0A7FaYkdn6rV3ubNp1bX5cU2VXgLQFjSxzbv5Z6HCxOfk/kOVuBmtsmjglj1wTg9fXlG38rjl0dacUZT0U6Hlij Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:6388:b0:65f:69f7:d0ed with SMTP id 006d021491bc7-65f69f7d735mr1654899eaf.83.1768031842995; Fri, 09 Jan 2026 23:57:22 -0800 (PST) Date: Fri, 09 Jan 2026 23:57:22 -0800 In-Reply-To: <685b0ae5.a00a0220.2e5631.009a.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69620662.050a0220.eaf7.0002.GAE@google.com> Subject: Re: [syzbot] [wpan?] WARNING in lowpan_xmit (2) From: syzbot To: alex.aring@gmail.com, davem@davemloft.net, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wpan@vger.kernel.org, miquel.raynal@bootlin.com, netdev@vger.kernel.org, pabeni@redhat.com, stefan@datenfreihafen.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: 372800cb95a3 Merge tag 'for-6.19-rc4-tag' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=139e9922580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8bfa57a8c0ab3aa8 dashboard link: https://syzkaller.appspot.com/bug?extid=5b74e0e96f12e3728ec8 compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=140649fc580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15d4d19a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/95aaef1a6aac/disk-372800cb.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3b81de4f4247/vmlinux-372800cb.xz kernel image: https://storage.googleapis.com/syzbot-assets/98061453c05e/bzImage-372800cb.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5b74e0e96f12e3728ec8@syzkaller.appspotmail.com ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 ------------[ cut here ]------------ WARNING: ./include/linux/skbuff.h:3227 at skb_network_header_len include/linux/skbuff.h:3227 [inline], CPU#1: aoe_tx0/1301 WARNING: ./include/linux/skbuff.h:3227 at lowpan_header net/ieee802154/6lowpan/tx.c:236 [inline], CPU#1: aoe_tx0/1301 WARNING: ./include/linux/skbuff.h:3227 at lowpan_xmit+0xea9/0x1210 net/ieee802154/6lowpan/tx.c:282, CPU#1: aoe_tx0/1301 Modules linked in: CPU: 1 UID: 0 PID: 1301 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:skb_network_header_len include/linux/skbuff.h:3227 [inline] RIP: 0010:lowpan_header net/ieee802154/6lowpan/tx.c:236 [inline] RIP: 0010:lowpan_xmit+0xea9/0x1210 net/ieee802154/6lowpan/tx.c:282 Code: ff ff 4c 89 ff 48 01 81 38 02 00 00 e8 30 d8 0f fe e9 e6 fb ff ff e8 46 a3 8f f6 90 0f 0b 90 e9 a3 f5 ff ff e8 38 a3 8f f6 90 <0f> 0b 90 e9 86 f6 ff ff e8 2a a3 8f f6 0f b7 8d e0 fe ff ff 44 8b RSP: 0018:ffffc9000476f860 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffc9000476f8e0 RCX: ffffffff8b2ebe6c RDX: ffff888028a3bd00 RSI: ffffffff8b2ec7e8 RDI: 0000000000000003 RBP: ffffc9000476f9f0 R08: 0000000000000003 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000000 R12: ffff88801d79a476 R13: 000000000000ffff R14: ffff888028234d90 R15: ffff88801d79a3c0 FS: 0000000000000000(0000) GS:ffff8881249fa000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c007868000 CR3: 0000000071880000 CR4: 00000000003526f0 Call Trace: __netdev_start_xmit include/linux/netdevice.h:5273 [inline] netdev_start_xmit include/linux/netdevice.h:5282 [inline] xmit_one net/core/dev.c:3853 [inline] dev_hard_start_xmit+0x97/0x6e0 net/core/dev.c:3869 __dev_queue_xmit+0x6d7/0x46b0 net/core/dev.c:4819 dev_queue_xmit include/linux/netdevice.h:3381 [inline] tx+0xcc/0x190 drivers/block/aoe/aoenet.c:62 kthread+0x1e4/0x3e0 drivers/block/aoe/aoecmd.c:1241 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 --- 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.