[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 75.485796][ T27] audit: type=1800 audit(1583067731.788:25): pid=9397 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 75.505900][ T27] audit: type=1800 audit(1583067731.798:26): pid=9397 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 75.557538][ T27] audit: type=1800 audit(1583067731.798:27): pid=9397 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 '10.128.0.241' (ECDSA) to the list of known hosts. 2020/03/01 13:02:20 parsed 1 programs 2020/03/01 13:02:22 executed programs: 0 syzkaller login: [ 86.461986][ T9565] IPVS: ftp: loaded support on port[0] = 21 [ 86.521996][ T9565] chnl_net:caif_netlink_parms(): no params data found [ 86.569112][ T9565] bridge0: port 1(bridge_slave_0) entered blocking state [ 86.576462][ T9565] bridge0: port 1(bridge_slave_0) entered disabled state [ 86.584467][ T9565] device bridge_slave_0 entered promiscuous mode [ 86.592797][ T9565] bridge0: port 2(bridge_slave_1) entered blocking state [ 86.600918][ T9565] bridge0: port 2(bridge_slave_1) entered disabled state [ 86.608915][ T9565] device bridge_slave_1 entered promiscuous mode [ 86.625478][ T9565] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 86.637291][ T9565] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 86.654874][ T9565] team0: Port device team_slave_0 added [ 86.662200][ T9565] team0: Port device team_slave_1 added [ 86.675916][ T9565] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 86.682902][ T9565] 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. [ 86.708989][ T9565] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 86.721305][ T9565] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 86.728952][ T9565] 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. [ 86.754945][ T9565] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 86.838560][ T9565] device hsr_slave_0 entered promiscuous mode [ 86.916865][ T9565] device hsr_slave_1 entered promiscuous mode [ 87.060658][ T9565] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 87.120449][ T9565] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 87.179687][ T9565] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 87.219182][ T9565] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 87.282606][ T9565] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.289777][ T9565] bridge0: port 2(bridge_slave_1) entered forwarding state [ 87.297544][ T9565] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.304606][ T9565] bridge0: port 1(bridge_slave_0) entered forwarding state [ 87.348336][ T9565] 8021q: adding VLAN 0 to HW filter on device bond0 [ 87.361795][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.373379][ T3882] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.381395][ T3882] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.390182][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 87.403290][ T9565] 8021q: adding VLAN 0 to HW filter on device team0 [ 87.414282][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 87.422964][ T2696] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.430043][ T2696] bridge0: port 1(bridge_slave_0) entered forwarding state [ 87.441995][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 87.450808][ T3882] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.457956][ T3882] bridge0: port 2(bridge_slave_1) entered forwarding state [ 87.478131][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 87.486482][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 87.496246][ T3869] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 87.507927][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 87.520009][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 87.529459][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 87.540159][ T9565] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 87.556409][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 87.564233][ T3882] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 87.582033][ T9565] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 87.600339][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 87.609266][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 87.627938][ T3869] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 87.635994][ T3869] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 87.645032][ T3869] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 87.653646][ T3869] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 87.662836][ T9565] device veth0_vlan entered promiscuous mode [ 87.673878][ T9565] device veth1_vlan entered promiscuous mode [ 87.693731][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 87.702110][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 87.710234][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 87.718784][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 87.729210][ T9565] device veth0_macvtap entered promiscuous mode [ 87.739540][ T9565] device veth1_macvtap entered promiscuous mode [ 87.754783][ T9565] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 87.762297][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 87.771919][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 87.779930][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 87.788544][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 87.801547][ T9565] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 87.809628][ T3869] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 87.818916][ T3869] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 88.102430][ T9570] BUG: unable to handle page fault for address: ffffed1018563307 [ 88.110167][ T9570] #PF: supervisor read access in kernel mode [ 88.116121][ T9570] #PF: error_code(0x0000) - not-present page [ 88.122069][ T9570] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 88.128590][ T9570] Oops: 0000 [#1] PREEMPT SMP KASAN [ 88.133803][ T9570] CPU: 0 PID: 9570 Comm: syz-executor.0 Not tainted 5.6.0-rc3-syzkaller #0 [ 88.142361][ T9570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.152407][ T9570] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 88.159180][ T9570] 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 [ 88.178767][ T9570] RSP: 0018:ffffc9000697f248 EFLAGS: 00010a02 [ 88.184848][ T9570] RAX: dffffc0000000000 RBX: ffff8880a2b19838 RCX: ffffffff867065d4 [ 88.192794][ T9570] RDX: 1ffff11018563307 RSI: ffffffff867065e2 RDI: 0000000000000005 [ 88.200740][ T9570] RBP: ffffc9000697f3b0 R08: ffff888099ef4200 R09: ffffc9000697f318 [ 88.208689][ T9570] R10: fffff52000d2fe68 R11: ffffc9000697f347 R12: 0000000000000010 [ 88.216641][ T9570] R13: ffff8880c2b19838 R14: ffff8880a2b19848 R15: ffffc9000697f388 [ 88.224604][ T9570] FS: 00000000013c2940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 88.233510][ T9570] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.240073][ T9570] CR2: ffffed1018563307 CR3: 0000000095c76000 CR4: 00000000001406f0 [ 88.248062][ T9570] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.256047][ T9570] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.263991][ T9570] Call Trace: [ 88.267258][ T9570] ? __mutex_lock+0xf73/0x13c0 [ 88.272000][ T9570] ? lock_downgrade+0x920/0x920 [ 88.276832][ T9570] ? ethnl_bitmap32_clear+0x390/0x390 [ 88.282179][ T9570] ? mutex_trylock+0x2d0/0x2d0 [ 88.286923][ T9570] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 88.293156][ T9570] ? ethnl_default_notify+0x6b0/0x6b0 [ 88.298502][ T9570] ? sock_sendmsg+0xd7/0x130 [ 88.303075][ T9570] ethnl_update_bitset+0x4d/0x67 [ 88.307987][ T9570] ethnl_set_linkmodes+0x461/0xc30 [ 88.313070][ T9570] ? lock_downgrade+0x920/0x920 [ 88.317916][ T9570] ? linkmodes_prepare_data+0x2a0/0x2a0 [ 88.323442][ T9570] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.329661][ T9570] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 88.335093][ T9570] ? kfree_skbmem+0xfb/0x1c0 [ 88.339658][ T9570] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.345874][ T9570] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.352087][ T9570] ? security_capable+0x95/0xc0 [ 88.356917][ T9570] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.363134][ T9570] ? genl_family_rcv_msg_attrs_parse+0x1c6/0x300 [ 88.369440][ T9570] genl_rcv_msg+0x67d/0xea0 [ 88.373922][ T9570] ? genl_rcv_msg+0x67d/0xea0 [ 88.378578][ T9570] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 88.384879][ T9570] ? __kasan_check_read+0x11/0x20 [ 88.389884][ T9570] ? find_held_lock+0x35/0x130 [ 88.394629][ T9570] netlink_rcv_skb+0x177/0x450 [ 88.399370][ T9570] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 88.405669][ T9570] ? netlink_ack+0xb50/0xb50 [ 88.410239][ T9570] ? __kasan_check_write+0x14/0x20 [ 88.415347][ T9570] ? netlink_deliver_tap+0x248/0xbf0 [ 88.420628][ T9570] genl_rcv+0x29/0x40 [ 88.424605][ T9570] netlink_unicast+0x59e/0x7e0 [ 88.429352][ T9570] ? netlink_attachskb+0x870/0x870 [ 88.434468][ T9570] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 88.440176][ T9570] ? __check_object_size+0x3d/0x437 [ 88.445365][ T9570] netlink_sendmsg+0x91c/0xea0 [ 88.450118][ T9570] ? netlink_unicast+0x7e0/0x7e0 [ 88.455035][ T9570] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 88.460599][ T9570] ? apparmor_socket_sendmsg+0x2a/0x30 [ 88.466052][ T9570] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.472320][ T9570] ? security_socket_sendmsg+0x8d/0xc0 [ 88.477761][ T9570] ? netlink_unicast+0x7e0/0x7e0 [ 88.482676][ T9570] sock_sendmsg+0xd7/0x130 [ 88.487070][ T9570] ____sys_sendmsg+0x753/0x880 [ 88.491811][ T9570] ? kernel_sendmsg+0x50/0x50 [ 88.496469][ T9570] ? __kasan_check_read+0x11/0x20 [ 88.501482][ T9570] ___sys_sendmsg+0x100/0x170 [ 88.506149][ T9570] ? sendmsg_copy_msghdr+0x70/0x70 [ 88.511256][ T9570] ? posix_get_monotonic_timespec+0x75/0x290 [ 88.517228][ T9570] ? find_held_lock+0x35/0x130 [ 88.521970][ T9570] ? __might_fault+0x12b/0x1e0 [ 88.526722][ T9570] ? lock_downgrade+0x920/0x920 [ 88.531569][ T9570] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.537805][ T9570] ? __fget_light+0x1ad/0x270 [ 88.542457][ T9570] ? __fdget+0x1b/0x20 [ 88.546507][ T9570] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 88.552722][ T9570] __sys_sendmsg+0x105/0x1d0 [ 88.557289][ T9570] ? __sys_sendmsg_sock+0xc0/0xc0 [ 88.562303][ T9570] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 88.567734][ T9570] ? do_syscall_64+0x26/0x790 [ 88.572386][ T9570] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.578424][ T9570] ? do_syscall_64+0x26/0x790 [ 88.583095][ T9570] __x64_sys_sendmsg+0x78/0xb0 [ 88.587839][ T9570] do_syscall_64+0xfa/0x790 [ 88.592333][ T9570] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.598202][ T9570] RIP: 0033:0x45c479 [ 88.602074][ T9570] 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 [ 88.621663][ T9570] RSP: 002b:0000000000c7fb78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 88.630101][ T9570] RAX: ffffffffffffffda RBX: 00000000013c2914 RCX: 000000000045c479 [ 88.638054][ T9570] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 88.646004][ T9570] RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 [ 88.654023][ T9570] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 88.661980][ T9570] R13: 0000000000000904 R14: 00000000004d4ff0 R15: 000000000076bf2c [ 88.669940][ T9570] Modules linked in: [ 88.673813][ T9570] CR2: ffffed1018563307 [ 88.677945][ T9570] ---[ end trace 0f63646a227695d6 ]--- [ 88.683387][ T9570] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 88.690125][ T9570] 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 [ 88.709710][ T9570] RSP: 0018:ffffc9000697f248 EFLAGS: 00010a02 [ 88.715753][ T9570] RAX: dffffc0000000000 RBX: ffff8880a2b19838 RCX: ffffffff867065d4 [ 88.723747][ T9570] RDX: 1ffff11018563307 RSI: ffffffff867065e2 RDI: 0000000000000005 [ 88.731710][ T9570] RBP: ffffc9000697f3b0 R08: ffff888099ef4200 R09: ffffc9000697f318 [ 88.739659][ T9570] R10: fffff52000d2fe68 R11: ffffc9000697f347 R12: 0000000000000010 [ 88.747605][ T9570] R13: ffff8880c2b19838 R14: ffff8880a2b19848 R15: ffffc9000697f388 [ 88.755556][ T9570] FS: 00000000013c2940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 88.764454][ T9570] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.771014][ T9570] CR2: ffffed1018563307 CR3: 0000000095c76000 CR4: 00000000001406f0 [ 88.778975][ T9570] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.786921][ T9570] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.794867][ T9570] Kernel panic - not syncing: Fatal exception [ 88.801989][ T9570] Kernel Offset: disabled [ 88.806327][ T9570] Rebooting in 86400 seconds..