[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.840038][ T27] audit: type=1800 audit(1583903168.803:25): pid=9282 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.873228][ T27] audit: type=1800 audit(1583903168.803:26): pid=9282 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.911231][ T27] audit: type=1800 audit(1583903168.803:27): pid=9282 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.77' (ECDSA) to the list of known hosts. 2020/03/11 05:20:31 parsed 1 programs 2020/03/11 05:20:33 executed programs: 0 syzkaller login: [ 934.370643][ T9456] IPVS: ftp: loaded support on port[0] = 21 [ 934.434625][ T9456] chnl_net:caif_netlink_parms(): no params data found [ 934.474666][ T9456] bridge0: port 1(bridge_slave_0) entered blocking state [ 934.482298][ T9456] bridge0: port 1(bridge_slave_0) entered disabled state [ 934.490302][ T9456] device bridge_slave_0 entered promiscuous mode [ 934.499216][ T9456] bridge0: port 2(bridge_slave_1) entered blocking state [ 934.506382][ T9456] bridge0: port 2(bridge_slave_1) entered disabled state [ 934.514101][ T9456] device bridge_slave_1 entered promiscuous mode [ 934.532184][ T9456] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 934.543480][ T9456] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 934.564352][ T9456] team0: Port device team_slave_0 added [ 934.572139][ T9456] team0: Port device team_slave_1 added [ 934.587926][ T9456] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 934.594950][ T9456] 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. [ 934.621534][ T9456] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 934.634763][ T9456] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 934.641702][ T9456] 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. [ 934.667690][ T9456] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 934.744690][ T9456] device hsr_slave_0 entered promiscuous mode [ 934.782368][ T9456] device hsr_slave_1 entered promiscuous mode [ 934.919079][ T9456] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 934.974920][ T9456] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 935.025030][ T9456] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 935.064467][ T9456] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 935.128311][ T9456] bridge0: port 2(bridge_slave_1) entered blocking state [ 935.135554][ T9456] bridge0: port 2(bridge_slave_1) entered forwarding state [ 935.143235][ T9456] bridge0: port 1(bridge_slave_0) entered blocking state [ 935.150279][ T9456] bridge0: port 1(bridge_slave_0) entered forwarding state [ 935.194761][ T9456] 8021q: adding VLAN 0 to HW filter on device bond0 [ 935.207713][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 935.228453][ T2893] bridge0: port 1(bridge_slave_0) entered disabled state [ 935.237387][ T2893] bridge0: port 2(bridge_slave_1) entered disabled state [ 935.246334][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 935.259086][ T9456] 8021q: adding VLAN 0 to HW filter on device team0 [ 935.280509][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 935.288960][ T2680] bridge0: port 1(bridge_slave_0) entered blocking state [ 935.296050][ T2680] bridge0: port 1(bridge_slave_0) entered forwarding state [ 935.313851][ T9464] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 935.322984][ T9464] bridge0: port 2(bridge_slave_1) entered blocking state [ 935.330027][ T9464] bridge0: port 2(bridge_slave_1) entered forwarding state [ 935.352988][ T9464] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 935.361442][ T9464] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 935.369862][ T9464] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 935.378048][ T9464] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 935.388117][ T9456] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 935.397961][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 935.415129][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 935.422899][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 935.437601][ T9456] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 935.456695][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 935.465376][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 935.483811][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 935.492877][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 935.503778][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 935.511712][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 935.521645][ T9456] device veth0_vlan entered promiscuous mode [ 935.533210][ T9456] device veth1_vlan entered promiscuous mode [ 935.553762][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 935.563312][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 935.571190][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 935.580090][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 935.590353][ T9456] device veth0_macvtap entered promiscuous mode [ 935.600667][ T9456] device veth1_macvtap entered promiscuous mode [ 935.617989][ T9456] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 935.627717][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 935.636103][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 935.644180][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 935.653036][ T2680] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 935.665315][ T9456] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 935.673294][ T9464] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 935.681917][ T9464] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 937.288931][ T9685] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 937.300654][ T9685] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 937.309079][ T9685] CPU: 1 PID: 9685 Comm: syz-executor.0 Not tainted 5.6.0-rc3-next-20200228-syzkaller #0 [ 937.318849][ T9685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 937.329016][ T9685] RIP: 0010:rdma_listen+0x2c4/0x910 [ 937.334194][ T9685] Code: 8b a5 c8 01 00 00 31 f6 48 c7 c7 00 52 3d 8a e8 62 ec 26 02 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a8 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b [ 937.353779][ T9685] RSP: 0018:ffffc90002637ca8 EFLAGS: 00010202 [ 937.359821][ T9685] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 937.367785][ T9685] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008 [ 937.375735][ T9685] RBP: ffff88809a326000 R08: ffff8880a4f2c240 R09: fffffbfff147aa49 [ 937.383689][ T9685] R10: ffffc90002637ca8 R11: ffffffff8a3d5243 R12: 0000000000000000 [ 937.391642][ T9685] R13: 0000000000000400 R14: ffff8880a6e60400 R15: 0000000000000008 [ 937.399663][ T9685] FS: 00007f0b6e822700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 937.408585][ T9685] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 937.415157][ T9685] CR2: 000000000176afd8 CR3: 0000000093250000 CR4: 00000000001406e0 [ 937.423109][ T9685] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 937.431057][ T9685] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 937.439022][ T9685] Call Trace: [ 937.442462][ T9685] ucma_listen+0x14d/0x1c0 [ 937.446859][ T9685] ? ucma_notify+0x190/0x190 [ 937.451477][ T9685] ? __might_fault+0x190/0x1d0 [ 937.456268][ T9685] ? _copy_from_user+0x123/0x190 [ 937.461196][ T9685] ? ucma_notify+0x190/0x190 [ 937.465771][ T9685] ucma_write+0x285/0x350 [ 937.470089][ T9685] ? ucma_open+0x270/0x270 [ 937.474575][ T9685] ? security_file_permission+0x8a/0x370 [ 937.480188][ T9685] ? ucma_open+0x270/0x270 [ 937.484639][ T9685] __vfs_write+0x76/0x100 [ 937.488950][ T9685] vfs_write+0x262/0x5c0 [ 937.493172][ T9685] ksys_write+0x1e8/0x250 [ 937.497479][ T9685] ? __ia32_sys_read+0xb0/0xb0 [ 937.502286][ T9685] ? __ia32_sys_clock_settime+0x260/0x260 [ 937.508030][ T9685] ? trace_hardirqs_off_caller+0x55/0x230 [ 937.513795][ T9685] do_syscall_64+0xf6/0x790 [ 937.518334][ T9685] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 937.524338][ T9685] RIP: 0033:0x45c4a9 [ 937.528211][ T9685] Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 937.547924][ T9685] RSP: 002b:00007f0b6e821c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 937.556366][ T9685] RAX: ffffffffffffffda RBX: 00007f0b6e8226d4 RCX: 000000000045c4a9 [ 937.564322][ T9685] RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003 [ 937.572286][ T9685] RBP: 000000000076bfc0 R08: 0000000000000000 R09: 0000000000000000 [ 937.580237][ T9685] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 937.588362][ T9685] R13: 0000000000000cbe R14: 00000000004cea80 R15: 000000000076bfcc [ 937.596319][ T9685] Modules linked in: [ 937.607449][ T9685] ---[ end trace c6634a6e0f3210e3 ]--- [ 937.613292][ T9685] RIP: 0010:rdma_listen+0x2c4/0x910 [ 937.618465][ T9685] Code: 8b a5 c8 01 00 00 31 f6 48 c7 c7 00 52 3d 8a e8 62 ec 26 02 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a8 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b [ 937.638197][ T9685] RSP: 0018:ffffc90002637ca8 EFLAGS: 00010202 [ 937.644271][ T9685] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 937.652341][ T9685] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008 [ 937.660301][ T9685] RBP: ffff88809a326000 R08: ffff8880a4f2c240 R09: fffffbfff147aa49 [ 937.668281][ T9685] R10: ffffc90002637ca8 R11: ffffffff8a3d5243 R12: 0000000000000000 [ 937.676511][ T9685] R13: 0000000000000400 R14: ffff8880a6e60400 R15: 0000000000000008 [ 937.684533][ T9685] FS: 00007f0b6e822700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 937.694025][ T9685] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 937.700703][ T9685] CR2: 000000000176afd8 CR3: 0000000093250000 CR4: 00000000001406e0 [ 937.709055][ T9685] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 937.717140][ T9685] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 937.725141][ T9685] Kernel panic - not syncing: Fatal exception [ 937.732587][ T9685] Kernel Offset: disabled [ 937.737025][ T9685] Rebooting in 86400 seconds..