From: syzbot <syzbot+5b74e0e96f12e3728ec8@syzkaller.appspotmail.com>
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
Subject: Re: [syzbot] [wpan?] WARNING in lowpan_xmit (2)
Date: Fri, 09 Jan 2026 23:57:22 -0800 [thread overview]
Message-ID: <69620662.050a0220.eaf7.0002.GAE@google.com> (raw)
In-Reply-To: <685b0ae5.a00a0220.2e5631.009a.GAE@google.com>
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:
<TASK>
__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
</TASK>
---
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.
prev parent reply other threads:[~2026-01-10 7:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-24 20:30 [syzbot] [wpan?] WARNING in lowpan_xmit (2) syzbot
2026-01-10 7:57 ` syzbot [this message]
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