From: syzbot <syzbot+ded267b328e950a7c0c4@syzkaller.appspotmail.com>
To: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com,
horms@kernel.org, idosch@nvidia.com, kuba@kernel.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
pabeni@redhat.com, pimyn@google.com,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] BUG: Address fc00:: on device lo is missing its host route.
Date: Thu, 20 Aug 2026 15:09:38 -0700 [thread overview]
Message-ID: <6a877b22.f7a79266.2f965f.004d.GAE@google.com> (raw)
In-Reply-To: <6a75d605.01d0871a.3a0d52.0047.GAE@google.com>
syzbot has found a reproducer for the following issue on:
HEAD commit: 9d2ed026f031 Merge tag 'sysctl-7.03-rc1' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10661e79580000
kernel config: https://syzkaller.appspot.com/x/.config?x=996f19b48f3c7123
dashboard link: https://syzkaller.appspot.com/bug?extid=ded267b328e950a7c0c4
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d20415580000
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-9d2ed026.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/dbab070bbde5/vmlinux-9d2ed026.xz
kernel image: https://storage.googleapis.com/syzbot-assets/857014a70033/bzImage-9d2ed026.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ded267b328e950a7c0c4@syzkaller.appspotmail.com
netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
IPv6: BUG: Address fc00:: on device lo is missing its host route.
netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
bridge_slave_1: left allmulticast mode
bridge_slave_1: left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
bridge_slave_0: left allmulticast mode
bridge_slave_0: left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
bond0 (unregistering): Released all slaves
hsr_slave_0: left promiscuous mode
hsr_slave_1: left promiscuous mode
batman_adv: batadv0: Interface deactivated: batadv_slave_0
batman_adv: batadv0: Removing interface: batadv_slave_0
batman_adv: batadv0: Interface deactivated: batadv_slave_1
batman_adv: batadv0: Removing interface: batadv_slave_1
veth1_macvtap: left promiscuous mode
veth0_macvtap: left promiscuous mode
veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed
---
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.
next prev parent reply other threads:[~2026-08-20 22:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-07 12:56 [syzbot] BUG: Address fc00:: on device lo is missing its host route syzbot
2026-08-20 22:09 ` syzbot [this message]
2026-08-22 5:11 ` syzbot
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