[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 72.453877][ T27] audit: type=1800 audit(1583071661.659:25): pid=9921 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 72.474778][ T27] audit: type=1800 audit(1583071661.659:26): pid=9921 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 72.534624][ T27] audit: type=1800 audit(1583071661.659:27): pid=9921 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 '10.128.0.161' (ECDSA) to the list of known hosts. 2020/03/01 14:08:02 parsed 1 programs 2020/03/01 14:08:04 executed programs: 0 syzkaller login: [ 95.178422][T10090] IPVS: ftp: loaded support on port[0] = 21 [ 95.238129][T10090] chnl_net:caif_netlink_parms(): no params data found [ 95.288573][T10090] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.296636][T10090] bridge0: port 1(bridge_slave_0) entered disabled state [ 95.305412][T10090] device bridge_slave_0 entered promiscuous mode [ 95.314205][T10090] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.322660][T10090] bridge0: port 2(bridge_slave_1) entered disabled state [ 95.332393][T10090] device bridge_slave_1 entered promiscuous mode [ 95.349595][T10090] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 95.360499][T10090] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 95.380706][T10090] team0: Port device team_slave_0 added [ 95.387982][T10090] team0: Port device team_slave_1 added [ 95.403518][T10090] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 95.410736][T10090] 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. [ 95.437070][T10090] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 95.450526][T10090] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 95.457594][T10090] 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. [ 95.484796][T10090] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 95.556597][T10090] device hsr_slave_0 entered promiscuous mode [ 95.594588][T10090] device hsr_slave_1 entered promiscuous mode [ 95.711039][T10090] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 95.748109][T10090] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 95.796878][T10090] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 95.856788][T10090] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 95.909549][T10090] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.916984][T10090] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.925026][T10090] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.932156][T10090] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.979305][T10090] 8021q: adding VLAN 0 to HW filter on device bond0 [ 95.993064][ T2721] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 96.004160][ T2721] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.012886][ T2721] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.022120][ T2721] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 96.036817][T10090] 8021q: adding VLAN 0 to HW filter on device team0 [ 96.048523][ T2756] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 96.057582][ T2756] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.064760][ T2756] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.086669][ T2756] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 96.096665][ T2756] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.103930][ T2756] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.112214][ T2756] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 96.121907][ T2756] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 96.132718][ T2721] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 96.146083][ T2756] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 96.160606][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 96.171955][T10090] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 96.189956][ T2756] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 96.198217][ T2756] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 96.211726][T10090] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 96.230948][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 96.253292][T10090] device veth0_vlan entered promiscuous mode [ 96.260449][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 96.269509][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 96.278995][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 96.288032][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 96.300181][T10090] device veth1_vlan entered promiscuous mode [ 96.328481][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 96.337268][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 96.345747][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 96.355712][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 96.367824][T10090] device veth0_macvtap entered promiscuous mode [ 96.378558][T10090] device veth1_macvtap entered promiscuous mode [ 96.396396][T10090] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 96.403893][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 96.413558][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 96.422421][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 96.431794][ T2686] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 96.443664][T10090] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 96.451752][ T2721] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 96.460846][ T2721] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 96.701561][T10095] BUG: unable to handle page fault for address: ffffed1018f4d987 [ 96.709407][T10095] #PF: supervisor read access in kernel mode [ 96.715407][T10095] #PF: error_code(0x0000) - not-present page [ 96.721524][T10095] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 96.728226][T10095] Oops: 0000 [#1] PREEMPT SMP KASAN [ 96.733416][T10095] CPU: 0 PID: 10095 Comm: syz-executor.0 Not tainted 5.6.0-rc3-syzkaller #0 [ 96.742251][T10095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.752339][T10095] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 96.759143][T10095] Code: 45 85 e4 0f 84 aa 03 00 00 e8 6e 31 05 fb 48 8b 85 c8 fe ff ff 4e 8d 2c a8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 0c 84 d2 74 08 4c [ 96.778800][T10095] RSP: 0018:ffffc900021b7248 EFLAGS: 00010a07 [ 96.784976][T10095] RAX: dffffc0000000000 RBX: ffff8880a7a6cc3c RCX: ffffffff867065d4 [ 96.792940][T10095] RDX: 1ffff11018f4d987 RSI: ffffffff867065e2 RDI: 0000000000000005 [ 96.800957][T10095] RBP: ffffc900021b73b0 R08: ffff88809e2484c0 R09: ffffc900021b7318 [ 96.808993][T10095] R10: fffff52000436e68 R11: ffffc900021b7347 R12: 0000000000000010 [ 96.817008][T10095] R13: ffff8880c7a6cc3c R14: ffff8880a7a6cc4c R15: ffffc900021b7388 [ 96.825197][T10095] FS: 00000000013a9940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 96.834354][T10095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 96.840976][T10095] CR2: ffffed1018f4d987 CR3: 00000000a4936000 CR4: 00000000001406f0 [ 96.849052][T10095] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 96.857188][T10095] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 96.865150][T10095] Call Trace: [ 96.868581][T10095] ? __mutex_lock+0x458/0x13c0 [ 96.873408][T10095] ? lock_downgrade+0x920/0x920 [ 96.878270][T10095] ? ethnl_bitmap32_clear+0x390/0x390 [ 96.883677][T10095] ? mutex_trylock+0x2d0/0x2d0 [ 96.888453][T10095] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 96.894748][T10095] ? ethnl_default_notify+0x6b0/0x6b0 [ 96.900122][T10095] ? sock_sendmsg+0xd7/0x130 [ 96.904715][T10095] ethnl_update_bitset+0x4d/0x67 [ 96.910270][T10095] ethnl_set_linkmodes+0x461/0xc30 [ 96.915389][T10095] ? lock_downgrade+0x920/0x920 [ 96.920256][T10095] ? linkmodes_prepare_data+0x2a0/0x2a0 [ 96.925803][T10095] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.932051][T10095] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 96.937509][T10095] ? kfree_skbmem+0xfb/0x1c0 [ 96.942091][T10095] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.948336][T10095] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.954627][T10095] ? security_capable+0x95/0xc0 [ 96.959478][T10095] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.965721][T10095] ? genl_family_rcv_msg_attrs_parse+0x1c6/0x300 [ 96.972217][T10095] genl_rcv_msg+0x67d/0xea0 [ 96.976744][T10095] ? genl_rcv_msg+0x67d/0xea0 [ 96.981417][T10095] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 96.987745][T10095] ? __kasan_check_read+0x11/0x20 [ 96.992820][T10095] ? find_held_lock+0x35/0x130 [ 96.997582][T10095] netlink_rcv_skb+0x177/0x450 [ 97.002364][T10095] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 97.008694][T10095] ? netlink_ack+0xb50/0xb50 [ 97.013286][T10095] ? __kasan_check_write+0x14/0x20 [ 97.018405][T10095] ? netlink_deliver_tap+0x248/0xbf0 [ 97.023892][T10095] genl_rcv+0x29/0x40 [ 97.027861][T10095] netlink_unicast+0x59e/0x7e0 [ 97.032633][T10095] ? netlink_attachskb+0x870/0x870 [ 97.037869][T10095] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 97.043596][T10095] ? __check_object_size+0x3d/0x437 [ 97.048917][T10095] netlink_sendmsg+0x91c/0xea0 [ 97.053975][T10095] ? netlink_unicast+0x7e0/0x7e0 [ 97.058917][T10095] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 97.064467][T10095] ? apparmor_socket_sendmsg+0x2a/0x30 [ 97.070043][T10095] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.076274][T10095] ? security_socket_sendmsg+0x8d/0xc0 [ 97.081721][T10095] ? netlink_unicast+0x7e0/0x7e0 [ 97.086657][T10095] sock_sendmsg+0xd7/0x130 [ 97.091078][T10095] ____sys_sendmsg+0x753/0x880 [ 97.095921][T10095] ? kernel_sendmsg+0x50/0x50 [ 97.100723][T10095] ? __kasan_check_read+0x11/0x20 [ 97.105889][T10095] ___sys_sendmsg+0x100/0x170 [ 97.110563][T10095] ? sendmsg_copy_msghdr+0x70/0x70 [ 97.115670][T10095] ? posix_get_monotonic_timespec+0x75/0x290 [ 97.121653][T10095] ? find_held_lock+0x35/0x130 [ 97.126459][T10095] ? __might_fault+0x12b/0x1e0 [ 97.131217][T10095] ? lock_downgrade+0x920/0x920 [ 97.136095][T10095] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.142384][T10095] ? __fget_light+0x1ad/0x270 [ 97.147040][T10095] ? __fdget+0x1b/0x20 [ 97.151087][T10095] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 97.157560][T10095] __sys_sendmsg+0x105/0x1d0 [ 97.162158][T10095] ? __sys_sendmsg_sock+0xc0/0xc0 [ 97.167393][T10095] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 97.172856][T10095] ? do_syscall_64+0x26/0x790 [ 97.177532][T10095] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.183618][T10095] ? do_syscall_64+0x26/0x790 [ 97.188289][T10095] __x64_sys_sendmsg+0x78/0xb0 [ 97.193616][T10095] do_syscall_64+0xfa/0x790 [ 97.198239][T10095] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.204231][T10095] RIP: 0033:0x45c479 [ 97.208120][T10095] 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 [ 97.228025][T10095] RSP: 002b:0000000000c7fb78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 97.236432][T10095] RAX: ffffffffffffffda RBX: 00000000013a9914 RCX: 000000000045c479 [ 97.244549][T10095] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 97.255834][T10095] RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 [ 97.263859][T10095] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 97.271821][T10095] R13: 0000000000000904 R14: 00000000004d4ff0 R15: 000000000076bf2c [ 97.280170][T10095] Modules linked in: [ 97.284096][T10095] CR2: ffffed1018f4d987 [ 97.288258][T10095] ---[ end trace a6b8c55aa99ebfca ]--- [ 97.293717][T10095] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 97.300475][T10095] Code: 45 85 e4 0f 84 aa 03 00 00 e8 6e 31 05 fb 48 8b 85 c8 fe ff ff 4e 8d 2c a8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 0c 84 d2 74 08 4c [ 97.320084][T10095] RSP: 0018:ffffc900021b7248 EFLAGS: 00010a07 [ 97.326149][T10095] RAX: dffffc0000000000 RBX: ffff8880a7a6cc3c RCX: ffffffff867065d4 [ 97.334125][T10095] RDX: 1ffff11018f4d987 RSI: ffffffff867065e2 RDI: 0000000000000005 [ 97.342157][T10095] RBP: ffffc900021b73b0 R08: ffff88809e2484c0 R09: ffffc900021b7318 [ 97.350114][T10095] R10: fffff52000436e68 R11: ffffc900021b7347 R12: 0000000000000010 [ 97.358335][T10095] R13: ffff8880c7a6cc3c R14: ffff8880a7a6cc4c R15: ffffc900021b7388 [ 97.366302][T10095] FS: 00000000013a9940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 97.375520][T10095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 97.382089][T10095] CR2: ffffed1018f4d987 CR3: 00000000a4936000 CR4: 00000000001406f0 [ 97.390111][T10095] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 97.398102][T10095] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 97.406066][T10095] Kernel panic - not syncing: Fatal exception [ 97.413631][T10095] Kernel Offset: disabled [ 97.417974][T10095] Rebooting in 86400 seconds..