[ 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 Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 '10.128.10.31' (ECDSA) to the list of known hosts. 2020/08/27 10:53:16 parsed 1 programs 2020/08/27 10:53:16 executed programs: 0 syzkaller login: [ 70.590602][ T28] audit: type=1400 audit(1598525596.956:8): avc: denied { execmem } for pid=6879 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 71.736054][ T6880] IPVS: ftp: loaded support on port[0] = 21 [ 71.891567][ T6880] chnl_net:caif_netlink_parms(): no params data found [ 71.947620][ T6880] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.955470][ T6880] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.964100][ T6880] device bridge_slave_0 entered promiscuous mode [ 71.974249][ T6880] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.981392][ T6880] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.990351][ T6880] device bridge_slave_1 entered promiscuous mode [ 72.011372][ T6880] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.022926][ T6880] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.046041][ T6880] team0: Port device team_slave_0 added [ 72.053793][ T6880] team0: Port device team_slave_1 added [ 72.071286][ T6880] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.078256][ T6880] 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. [ 72.104414][ T6880] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.117543][ T6880] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.124557][ T6880] 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. [ 72.150579][ T6880] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.179301][ T6880] device hsr_slave_0 entered promiscuous mode [ 72.186337][ T6880] device hsr_slave_1 entered promiscuous mode [ 72.287780][ T6880] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.298024][ T6880] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.308560][ T6880] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.320180][ T6880] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.347410][ T6880] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.354652][ T6880] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.362751][ T6880] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.369812][ T6880] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.418541][ T6880] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.431726][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.444476][ T23] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.454128][ T23] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.461961][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.476607][ T6880] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.489454][ T2649] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.498657][ T2649] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.505791][ T2649] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.522829][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.531230][ T23] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.538360][ T23] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.565311][ T2583] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.574797][ T2583] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.583518][ T2583] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.591679][ T2583] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.604000][ T6880] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.612788][ T2583] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.631965][ T2649] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.640109][ T2649] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.654052][ T6880] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.675193][ T2649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.695482][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.704109][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.713362][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.727149][ T6880] device veth0_vlan entered promiscuous mode [ 72.738910][ T6880] device veth1_vlan entered promiscuous mode [ 72.760427][ T2649] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.769319][ T2649] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.778136][ T2649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.789158][ T6880] device veth0_macvtap entered promiscuous mode [ 72.801071][ T6880] device veth1_macvtap entered promiscuous mode [ 72.820001][ T6880] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.827946][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.837869][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.850349][ T6880] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.858892][ T2649] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.871675][ T6880] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.880943][ T6880] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.890616][ T6880] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.900750][ T6880] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.011011][ T7102] ------------[ cut here ]------------ [ 73.016548][ T7102] ODEBUG: free active (active state 1) object type: rcu_head hint: 0x0 [ 73.025228][ T7102] WARNING: CPU: 1 PID: 7102 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 73.034687][ T7102] Kernel panic - not syncing: panic_on_warn set ... [ 73.041283][ T7102] CPU: 1 PID: 7102 Comm: syz-executor.0 Not tainted 5.9.0-rc2-syzkaller #0 [ 73.049863][ T7102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.059910][ T7102] Call Trace: [ 73.063183][ T7102] dump_stack+0x18f/0x20d [ 73.067518][ T7102] panic+0x2e3/0x75c [ 73.071414][ T7102] ? __warn_printk+0xf3/0xf3 [ 73.075991][ T7102] ? console_unlock+0x7f0/0xf30 [ 73.080827][ T7102] ? __warn.cold+0x5/0x4a [ 73.085136][ T7102] ? __warn+0xd6/0x1f2 [ 73.089198][ T7102] ? debug_print_object+0x160/0x250 [ 73.094375][ T7102] __warn.cold+0x20/0x4a [ 73.098592][ T7102] ? wake_up_klogd.part.0+0x8c/0xc0 [ 73.103777][ T7102] ? debug_print_object+0x160/0x250 [ 73.108949][ T7102] report_bug+0x1bd/0x210 [ 73.113271][ T7102] handle_bug+0x38/0x90 [ 73.117420][ T7102] exc_invalid_op+0x14/0x40 [ 73.121896][ T7102] asm_exc_invalid_op+0x12/0x20 [ 73.126726][ T7102] RIP: 0010:debug_print_object+0x160/0x250 [ 73.132517][ T7102] Code: dd e0 26 94 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd e0 26 94 88 48 c7 c7 40 1c 94 88 e8 d2 36 a6 fd <0f> 0b 83 05 93 4f 13 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 73.152110][ T7102] RSP: 0018:ffffc90001c37ba8 EFLAGS: 00010086 [ 73.158162][ T7102] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 73.166111][ T7102] RDX: ffff888099c76180 RSI: ffffffff815dafc7 RDI: fffff52000386f67 [ 73.174058][ T7102] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720f8b [ 73.182022][ T7102] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bd6780 [ 73.189976][ T7102] R13: 0000000000000000 R14: dead000000000100 R15: dffffc0000000000 [ 73.197939][ T7102] ? vprintk_func+0x97/0x1a6 [ 73.202518][ T7102] ? debug_print_object+0x160/0x250 [ 73.207697][ T7102] debug_check_no_obj_freed+0x301/0x41c [ 73.213238][ T7102] kmem_cache_free.part.0+0x16d/0x1f0 [ 73.218589][ T7102] task_work_run+0xdd/0x190 [ 73.223085][ T7102] get_signal+0xd89/0x1f00 [ 73.227493][ T7102] arch_do_signal+0x82/0x2520 [ 73.232168][ T7102] ? lock_downgrade+0x830/0x830 [ 73.237011][ T7102] ? __ia32_sys_epoll_create+0x1e0/0x1e0 [ 73.242636][ T7102] ? copy_siginfo_to_user32+0xa0/0xa0 [ 73.248035][ T7102] ? ep_unregister_pollwait.constprop.0+0x3c0/0x3c0 [ 73.254618][ T7102] ? __might_fault+0x190/0x1d0 [ 73.259368][ T7102] ? exit_to_user_mode_prepare+0xb9/0x1c0 [ 73.265092][ T7102] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 73.271059][ T7102] exit_to_user_mode_prepare+0x15d/0x1c0 [ 73.276684][ T7102] syscall_exit_to_user_mode+0x59/0x2b0 [ 73.282259][ T7102] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.288173][ T7102] RIP: 0033:0x45d5b9 [ 73.292058][ T7102] Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.311655][ T7102] RSP: 002b:00007f0391acbc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 73.320046][ T7102] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 73.328080][ T7102] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000006 [ 73.336030][ T7102] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 73.344001][ T7102] R10: 0000000020000000 R11: 0000000000000246 R12: 000000000118cf4c [ 73.352005][ T7102] R13: 00007ffffcf2e40f R14: 00007f0391acc9c0 R15: 000000000118cf4c [ 73.361117][ T7102] Kernel Offset: disabled [ 73.365506][ T7102] Rebooting in 86400 seconds..