Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Daily apt download activities. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started Getty on tty1. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Found device /dev/ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ 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 Serial Getty on ttyS0. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.198' (ECDSA) to the list of known hosts. 2020/04/20 19:56:07 parsed 1 programs 2020/04/20 19:56:09 executed programs: 0 syzkaller login: [ 73.043055][ T27] audit: type=1400 audit(1587412569.431:8): avc: denied { execmem } for pid=7047 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 73.084082][ T7048] IPVS: ftp: loaded support on port[0] = 21 [ 73.201957][ T7048] chnl_net:caif_netlink_parms(): no params data found [ 73.257295][ T7048] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.266152][ T7048] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.275633][ T7048] device bridge_slave_0 entered promiscuous mode [ 73.285633][ T7048] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.292803][ T7048] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.301369][ T7048] device bridge_slave_1 entered promiscuous mode [ 73.322296][ T7048] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.333570][ T7048] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.358158][ T7048] team0: Port device team_slave_0 added [ 73.366930][ T7048] team0: Port device team_slave_1 added [ 73.386779][ T7048] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.394073][ T7048] 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. [ 73.420554][ T7048] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.433796][ T7048] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.440776][ T7048] 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. [ 73.467358][ T7048] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.527519][ T7048] device hsr_slave_0 entered promiscuous mode [ 73.574181][ T7048] device hsr_slave_1 entered promiscuous mode [ 73.726495][ T7048] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.776865][ T7048] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.836916][ T7048] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.906526][ T7048] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.961505][ T7048] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.968900][ T7048] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.977176][ T7048] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.984400][ T7048] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.035787][ T7048] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.051734][ T2971] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.062825][ T2971] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.072146][ T2971] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.081576][ T2971] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.096806][ T7048] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.109141][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.118164][ T2923] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.125458][ T2923] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.139265][ T2971] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.148387][ T2971] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.155551][ T2971] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.176153][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.187612][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.197759][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.207727][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.223750][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.232174][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.241888][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.252061][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.261825][ T7048] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.288681][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.296891][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.311327][ T7048] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.332700][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.342269][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.363959][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.372350][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.382870][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.390919][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.401242][ T7048] device veth0_vlan entered promiscuous mode [ 74.416071][ T7048] device veth1_vlan entered promiscuous mode [ 74.439242][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.448350][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.457238][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.466107][ T2923] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.479284][ T7048] device veth0_macvtap entered promiscuous mode [ 74.489492][ T7048] device veth1_macvtap entered promiscuous mode [ 74.509331][ T7048] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.517140][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.526694][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.535350][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.544396][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.557745][ T7048] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.566284][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.576631][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.818390][ T7256] ------------[ cut here ]------------ [ 74.823891][ T7256] kernel BUG at drivers/dma-buf/dma-buf.c:99! [ 74.831959][ T7256] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 74.838222][ T7256] CPU: 0 PID: 7256 Comm: syz-executor.0 Not tainted 5.7.0-rc2-syzkaller #0 [ 74.846899][ T7256] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.857105][ T7256] RIP: 0010:dma_buf_release+0x36b/0x440 [ 74.862686][ T7256] Code: d0 00 00 00 45 31 e4 e8 b3 83 3c fd 48 89 ef e8 ab 83 3c fd e8 c6 09 ff fc 44 89 e0 5b 5d 41 5c 41 5d 41 5e c3 e8 b5 09 ff fc <0f> 0b e8 ae 09 ff fc 4c 89 e7 e8 f6 e2 00 00 e9 6a ff ff ff e8 9c [ 74.882293][ T7256] RSP: 0018:ffffc90001f37e18 EFLAGS: 00010293 [ 74.888404][ T7256] RAX: ffff88809888a500 RBX: 0000000000000004 RCX: ffffffff84742276 [ 74.896413][ T7256] RDX: 0000000000000000 RSI: ffffffff847424fb RDI: 0000000000000005 [ 74.904977][ T7256] RBP: ffff88809a717800 R08: ffff88809888a500 R09: 0000000000000000 [ 74.912936][ T7256] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a79f9d44 [ 74.920895][ T7256] R13: ffff8880a79f9ce8 R14: ffff8880846e8040 R15: ffffffff84742190 [ 74.928858][ T7256] FS: 0000000001650940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 74.937816][ T7256] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.944434][ T7256] CR2: 00007fc6e7162710 CR3: 000000008afb1000 CR4: 00000000001406f0 [ 74.952399][ T7256] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.960390][ T7256] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.968352][ T7256] Call Trace: [ 74.971632][ T7256] __fput+0x33e/0x880 [ 74.975601][ T7256] task_work_run+0xf4/0x1b0 [ 74.980091][ T7256] exit_to_usermode_loop+0x2fa/0x360 [ 74.985448][ T7256] do_syscall_64+0x6b1/0x7d0 [ 74.990034][ T7256] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 74.995904][ T7256] RIP: 0033:0x416421 [ 74.999862][ T7256] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 75.019463][ T7256] RSP: 002b:00007ffc0c326bb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 75.027859][ T7256] RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000416421 [ 75.035915][ T7256] RDX: 0000000000000000 RSI: 0000000000000081 RDI: 0000000000000007 [ 75.043881][ T7256] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 75.051883][ T7256] R10: 00000000007908c0 R11: 0000000000000293 R12: 00000000007908d0 [ 75.059840][ T7256] R13: 0000000000000000 R14: ffffffffffffffff R15: 000000000078bf0c [ 75.067838][ T7256] Modules linked in: [ 75.080618][ T7256] ---[ end trace 24b406054282723d ]--- [ 75.086264][ T7256] RIP: 0010:dma_buf_release+0x36b/0x440 [ 75.091796][ T7256] Code: d0 00 00 00 45 31 e4 e8 b3 83 3c fd 48 89 ef e8 ab 83 3c fd e8 c6 09 ff fc 44 89 e0 5b 5d 41 5c 41 5d 41 5e c3 e8 b5 09 ff fc <0f> 0b e8 ae 09 ff fc 4c 89 e7 e8 f6 e2 00 00 e9 6a ff ff ff e8 9c [ 75.112339][ T7256] RSP: 0018:ffffc90001f37e18 EFLAGS: 00010293 [ 75.118942][ T7256] RAX: ffff88809888a500 RBX: 0000000000000004 RCX: ffffffff84742276 [ 75.128248][ T7256] RDX: 0000000000000000 RSI: ffffffff847424fb RDI: 0000000000000005 [ 75.136710][ T7256] RBP: ffff88809a717800 R08: ffff88809888a500 R09: 0000000000000000 [ 75.145203][ T7256] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a79f9d44 [ 75.153169][ T7256] R13: ffff8880a79f9ce8 R14: ffff8880846e8040 R15: ffffffff84742190 [ 75.162076][ T7256] FS: 0000000001650940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 75.171560][ T7256] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.178612][ T7256] CR2: 00007f8af5489000 CR3: 000000008afb1000 CR4: 00000000001406f0 [ 75.187298][ T7256] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.195754][ T7256] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.204708][ T7256] Kernel panic - not syncing: Fatal exception [ 75.211922][ T7256] Kernel Offset: disabled [ 75.216243][ T7256] Rebooting in 86400 seconds..