[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.13' (ECDSA) to the list of known hosts. syzkaller login: [ 84.720917][ T37] audit: type=1400 audit(1626491493.368:8): avc: denied { execmem } for pid=8453 comm="syz-executor232" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 84.847522][ T8454] chnl_net:caif_netlink_parms(): no params data found [ 84.908345][ T8454] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.917479][ T8454] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.927189][ T8454] device bridge_slave_0 entered promiscuous mode [ 84.937325][ T8454] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.945194][ T8454] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.953618][ T8454] device bridge_slave_1 entered promiscuous mode [ 84.974722][ T8454] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.987671][ T8454] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 85.010233][ T8454] team0: Port device team_slave_0 added [ 85.018339][ T8454] team0: Port device team_slave_1 added [ 85.037438][ T8454] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 85.045683][ T8454] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 85.072929][ T8454] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 85.086888][ T8454] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 85.093841][ T8454] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 85.120703][ T8454] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 85.148800][ T8454] device hsr_slave_0 entered promiscuous mode [ 85.156543][ T8454] device hsr_slave_1 entered promiscuous mode [ 85.274020][ T8454] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 85.286907][ T8454] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.299133][ T8454] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.310321][ T8454] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 85.341662][ T8454] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.348884][ T8454] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.357109][ T8454] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.364309][ T8454] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.413401][ T8454] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.428626][ T3162] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 85.441539][ T3162] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.451457][ T3162] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.460613][ T3162] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 85.476708][ T8454] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.489485][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 85.498547][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.506132][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.518743][ T3162] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 85.529580][ T3162] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.537027][ T3162] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.558832][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 85.568383][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 85.586378][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 85.594841][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 85.609494][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 85.620494][ T8454] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 85.640556][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 85.650000][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 85.662875][ T8454] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.683779][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 85.707049][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 85.715891][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 85.724658][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 85.734762][ T8454] device veth0_vlan entered promiscuous mode [ 85.748429][ T8454] device veth1_vlan entered promiscuous mode [ 85.771501][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 85.780020][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 85.789001][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 85.801579][ T8454] device veth0_macvtap entered promiscuous mode [ 85.813052][ T8454] device veth1_macvtap entered promiscuous mode [ 85.821511][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 85.841371][ T8454] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 85.849623][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 85.859450][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 85.871480][ T8454] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.879808][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 85.888719][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.902604][ T8454] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.912255][ T8454] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.930291][ T8454] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.957247][ T8454] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 86.138535][ T8680] divide error: 0000 [#1] PREEMPT SMP KASAN [ 86.144807][ T8680] CPU: 0 PID: 8680 Comm: syz-executor232 Not tainted 5.14.0-rc1-syzkaller #0 [ 86.153818][ T8680] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.163995][ T8680] RIP: 0010:netem_enqueue+0x1474/0x3550 [ 86.169656][ T8680] Code: 74 1f 4c 89 44 24 20 89 4c 24 18 89 44 24 10 e8 72 e2 74 fa 4c 8b 44 24 20 8b 4c 24 18 8b 44 24 10 48 8b 34 24 31 d2 2b 4e 74 f1 48 b8 00 00 00 00 00 fc ff df 48 01 d3 48 89 d9 48 c1 e9 03 [ 86.189433][ T8680] RSP: 0018:ffffc90001ee7670 EFLAGS: 00010246 [ 86.195576][ T8680] RAX: 0000000037e2a67d RBX: ffff88802465a800 RCX: 0000000000000000 [ 86.204144][ T8680] RDX: 0000000000000000 RSI: ffff888023d63040 RDI: ffff888023d630b4 [ 86.212373][ T8680] RBP: ffff8880160d8330 R08: ffff888023d63110 R09: 0000000000000000 [ 86.220457][ T8680] R10: ffffffff83d30eed R11: 0000000000000000 R12: 0000000000000001 [ 86.228419][ T8680] R13: 0000000000000002 R14: ffff8880160d8000 R15: 0000000000000000 [ 86.237987][ T8680] FS: 000000000107d300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 86.246910][ T8680] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.253477][ T8680] CR2: 00000000200001c0 CR3: 000000002d4b0000 CR4: 00000000001506f0 [ 86.261428][ T8680] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.269740][ T8680] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.277702][ T8680] Call Trace: [ 86.281051][ T8680] ? lock_release+0x720/0x720 [ 86.285713][ T8680] ? netem_dump+0x11d0/0x11d0 [ 86.290378][ T8680] ? rwlock_bug.part.0+0x90/0x90 [ 86.295421][ T8680] __dev_queue_xmit+0x1e7d/0x36c0 [ 86.300537][ T8680] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 86.305819][ T8680] ? memcpy+0x39/0x60 [ 86.309810][ T8680] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 86.316054][ T8680] ? memcpy+0x39/0x60 [ 86.320293][ T8680] ? __skb_clone+0x597/0x780 [ 86.325004][ T8680] netlink_deliver_tap+0x9b5/0xbc0 [ 86.330561][ T8680] netlink_unicast+0x5e5/0x7d0 [ 86.335594][ T8680] ? netlink_attachskb+0x890/0x890 [ 86.340696][ T8680] ? __build_skb_around+0x23e/0x2f0 [ 86.345880][ T8680] netlink_sendmsg+0x86d/0xdb0 [ 86.350627][ T8680] ? netlink_unicast+0x7d0/0x7d0 [ 86.356191][ T8680] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 86.364896][ T8680] ? netlink_unicast+0x7d0/0x7d0 [ 86.369846][ T8680] sock_sendmsg+0xcf/0x120 [ 86.374247][ T8680] ____sys_sendmsg+0x6e8/0x810 [ 86.379002][ T8680] ? kernel_sendmsg+0x50/0x50 [ 86.383746][ T8680] ? do_recvmmsg+0x6d0/0x6d0 [ 86.389625][ T8680] ? do_huge_pmd_anonymous_page+0x1259/0x2740 [ 86.395754][ T8680] ? lock_downgrade+0x6e0/0x6e0 [ 86.400621][ T8680] ___sys_sendmsg+0xf3/0x170 [ 86.405206][ T8680] ? sendmsg_copy_msghdr+0x160/0x160 [ 86.410478][ T8680] ? __lock_acquire+0x162f/0x54a0 [ 86.416554][ T8680] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 86.422676][ T8680] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 86.428653][ T8680] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 86.434979][ T8680] ? __fget_light+0x215/0x280 [ 86.439875][ T8680] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 86.446443][ T8680] __sys_sendmsg+0xe5/0x1b0 [ 86.451288][ T8680] ? __sys_sendmsg_sock+0x30/0x30 [ 86.456308][ T8680] ? syscall_enter_from_user_mode+0x21/0x70 [ 86.462206][ T8680] do_syscall_64+0x35/0xb0 [ 86.466927][ T8680] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 86.472988][ T8680] RIP: 0033:0x443a79 [ 86.476866][ T8680] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 [ 86.497727][ T8680] RSP: 002b:00007fff5fe6fb28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 86.506127][ T8680] RAX: ffffffffffffffda RBX: 00007fff5fe6fb50 RCX: 0000000000443a79 [ 86.514928][ T8680] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004 [ 86.522878][ T8680] RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d [ 86.530831][ T8680] R10: 000000000000000d R11: 0000000000000246 R12: 00007fff5fe6fb40 [ 86.538795][ T8680] R13: 00000000000f4240 R14: 000000000001507b R15: 00007fff5fe6fb34 [ 86.548138][ T8680] Modules linked in: [ 86.552151][ T8680] ---[ end trace fb5eaf91fae749cb ]--- [ 86.557635][ T8680] RIP: 0010:netem_enqueue+0x1474/0x3550 [ 86.563381][ T8680] Code: 74 1f 4c 89 44 24 20 89 4c 24 18 89 44 24 10 e8 72 e2 74 fa 4c 8b 44 24 20 8b 4c 24 18 8b 44 24 10 48 8b 34 24 31 d2 2b 4e 74 f1 48 b8 00 00 00 00 00 fc ff df 48 01 d3 48 89 d9 48 c1 e9 03 [ 86.583764][ T8680] RSP: 0018:ffffc90001ee7670 EFLAGS: 00010246 [ 86.589876][ T8680] RAX: 0000000037e2a67d RBX: ffff88802465a800 RCX: 0000000000000000 [ 86.597988][ T8680] RDX: 0000000000000000 RSI: ffff888023d63040 RDI: ffff888023d630b4 [ 86.606377][ T8680] RBP: ffff8880160d8330 R08: ffff888023d63110 R09: 0000000000000000 [ 86.614542][ T8680] R10: ffffffff83d30eed R11: 0000000000000000 R12: 0000000000000001 [ 86.622720][ T8680] R13: 0000000000000002 R14: ffff8880160d8000 R15: 0000000000000000 [ 86.631008][ T8680] FS: 000000000107d300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 86.640787][ T8680] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.647430][ T8680] CR2: 00000000200001c0 CR3: 000000002d4b0000 CR4: 00000000001506f0 [ 86.655450][ T8680] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.664405][ T8680] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.672430][ T8680] Kernel panic - not syncing: Fatal exception in interrupt [ 86.681200][ T8680] Kernel Offset: disabled [ 86.686247][ T8680] Rebooting in 86400 seconds..