[ 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 '10.128.0.39' (ECDSA) to the list of known hosts. 2020/04/19 07:48:12 parsed 1 programs 2020/04/19 07:48:14 executed programs: 0 syzkaller login: [ 62.570375][ T7066] IPVS: ftp: loaded support on port[0] = 21 [ 62.669244][ T7066] chnl_net:caif_netlink_parms(): no params data found [ 62.724299][ T7066] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.732469][ T7066] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.741932][ T7066] device bridge_slave_0 entered promiscuous mode [ 62.751235][ T7066] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.759199][ T7066] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.767971][ T7066] device bridge_slave_1 entered promiscuous mode [ 62.788446][ T7066] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.800059][ T7066] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.823213][ T7066] team0: Port device team_slave_0 added [ 62.830723][ T7066] team0: Port device team_slave_1 added [ 62.847739][ T7066] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 62.854740][ T7066] 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. [ 62.882160][ T7066] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 62.895053][ T7066] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 62.902115][ T7066] 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. [ 62.928205][ T7066] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 62.997654][ T7066] device hsr_slave_0 entered promiscuous mode [ 63.054837][ T7066] device hsr_slave_1 entered promiscuous mode [ 63.182105][ T7066] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.237454][ T7066] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.306516][ T7066] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.346477][ T7066] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.410549][ T7066] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.417981][ T7066] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.426351][ T7066] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.433584][ T7066] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.482388][ T7066] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.497491][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.508268][ T3238] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.516888][ T3238] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.525740][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 63.539058][ T7066] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.550639][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.560457][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.567693][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.584077][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.593580][ T3238] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.600864][ T3238] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.616682][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.626011][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.639001][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.650825][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 63.660792][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.673571][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 63.682936][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.695219][ T7066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.715413][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.723261][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.738049][ T7066] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.762483][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 63.771965][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 63.794011][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 63.802291][ T2690] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 63.812813][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 63.820873][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 63.829810][ T7066] device veth0_vlan entered promiscuous mode [ 63.843189][ T7066] device veth1_vlan entered promiscuous mode [ 63.866240][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 63.875805][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 63.884140][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 63.892852][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 63.904795][ T7066] device veth0_macvtap entered promiscuous mode [ 63.917197][ T7066] device veth1_macvtap entered promiscuous mode [ 63.935614][ T7066] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 63.943361][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 63.953013][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 63.961816][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 63.971352][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 63.985591][ T7066] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 63.994401][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 64.003045][ T3238] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 64.636905][ T7316] ------------[ cut here ]------------ [ 64.642410][ T7316] kernel BUG at drivers/dma-buf/dma-buf.c:99! [ 64.656747][ T7316] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 64.662859][ T7316] CPU: 0 PID: 7316 Comm: syz-executor.0 Not tainted 5.7.0-rc1-syzkaller #0 [ 64.671445][ T7316] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.681516][ T7316] RIP: 0010:dma_buf_release+0x36b/0x440 [ 64.687084][ T7316] Code: d0 00 00 00 45 31 e4 e8 f3 7e 3c fd 48 89 ef e8 eb 7e 3c fd e8 06 05 ff fc 44 89 e0 5b 5d 41 5c 41 5d 41 5e c3 e8 f5 04 ff fc <0f> 0b e8 ee 04 ff fc 4c 89 e7 e8 f6 e2 00 00 e9 6a ff ff ff e8 dc [ 64.707136][ T7316] RSP: 0018:ffffc90001d17e18 EFLAGS: 00010293 [ 64.713188][ T7316] RAX: ffff8880912b2300 RBX: 0000000000000004 RCX: ffffffff84742be6 [ 64.721405][ T7316] RDX: 0000000000000000 RSI: ffffffff84742e6b RDI: 0000000000000005 [ 64.729395][ T7316] RBP: ffff88809f96c000 R08: ffff8880912b2300 R09: 0000000000000000 [ 64.737430][ T7316] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809e105304 [ 64.745617][ T7316] R13: ffff88809e1052a8 R14: ffff88808aba4680 R15: ffffffff84742b00 [ 64.753574][ T7316] FS: 0000000001dac940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 64.762485][ T7316] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.769169][ T7316] CR2: 000000000076c000 CR3: 00000000a802a000 CR4: 00000000001406f0 [ 64.777464][ T7316] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.785508][ T7316] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.793478][ T7316] Call Trace: [ 64.796774][ T7316] __fput+0x33e/0x880 [ 64.800736][ T7316] task_work_run+0xf4/0x1b0 [ 64.805227][ T7316] exit_to_usermode_loop+0x2fa/0x360 [ 64.810509][ T7316] do_syscall_64+0x6b1/0x7d0 [ 64.815142][ T7316] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 64.821297][ T7316] RIP: 0033:0x416461 [ 64.825184][ T7316] 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 [ 64.844892][ T7316] RSP: 002b:00007ffd5436d360 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 64.853301][ T7316] RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000416461 [ 64.861267][ T7316] RDX: 0000000000000000 RSI: 0000000000000081 RDI: 0000000000000007 [ 64.869228][ T7316] RBP: 0000000000000000 R08: 0000000000000000 R09: 01ffffffffffffff [ 64.877207][ T7316] R10: 00000000007708c0 R11: 0000000000000293 R12: 000000000076bf00 [ 64.885159][ T7316] R13: 00000000007708d0 R14: 0000000000000000 R15: 000000000076bf0c [ 64.893222][ T7316] Modules linked in: [ 64.904192][ T7316] ---[ end trace d8bfa91ddd881a03 ]--- [ 64.909694][ T7316] RIP: 0010:dma_buf_release+0x36b/0x440 [ 64.915476][ T7316] Code: d0 00 00 00 45 31 e4 e8 f3 7e 3c fd 48 89 ef e8 eb 7e 3c fd e8 06 05 ff fc 44 89 e0 5b 5d 41 5c 41 5d 41 5e c3 e8 f5 04 ff fc <0f> 0b e8 ee 04 ff fc 4c 89 e7 e8 f6 e2 00 00 e9 6a ff ff ff e8 dc [ 64.936842][ T7316] RSP: 0018:ffffc90001d17e18 EFLAGS: 00010293 [ 64.942905][ T7316] RAX: ffff8880912b2300 RBX: 0000000000000004 RCX: ffffffff84742be6 [ 64.951022][ T7316] RDX: 0000000000000000 RSI: ffffffff84742e6b RDI: 0000000000000005 [ 64.960429][ T7316] RBP: ffff88809f96c000 R08: ffff8880912b2300 R09: 0000000000000000 [ 64.968502][ T7316] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809e105304 [ 64.976829][ T7316] R13: ffff88809e1052a8 R14: ffff88808aba4680 R15: ffffffff84742b00 [ 64.984861][ T7316] FS: 0000000001dac940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 64.993874][ T7316] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.000452][ T7316] CR2: 000000000076c000 CR3: 00000000a802a000 CR4: 00000000001406f0 [ 65.008449][ T7316] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.016487][ T7316] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.024495][ T7316] Kernel panic - not syncing: Fatal exception [ 65.032033][ T7316] Kernel Offset: disabled [ 65.036490][ T7316] Rebooting in 86400 seconds..