[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 69.662534][ T27] audit: type=1800 audit(1583074064.492:25): pid=9698 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.682765][ T27] audit: type=1800 audit(1583074064.492:26): pid=9698 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.736594][ T27] audit: type=1800 audit(1583074064.492:27): pid=9698 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[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. syzkaller login: [ 80.465855][ T9856] IPVS: ftp: loaded support on port[0] = 21 [ 80.523318][ T9856] chnl_net:caif_netlink_parms(): no params data found [ 80.561685][ T9856] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.569436][ T9856] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.577840][ T9856] device bridge_slave_0 entered promiscuous mode [ 80.586413][ T9856] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.593536][ T9856] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.601438][ T9856] device bridge_slave_1 entered promiscuous mode [ 80.619574][ T9856] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.630699][ T9856] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.650783][ T9856] team0: Port device team_slave_0 added [ 80.658482][ T9856] team0: Port device team_slave_1 added [ 80.673831][ T9856] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.680872][ T9856] 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. [ 80.706823][ T9856] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.719598][ T9856] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.726707][ T9856] 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. [ 80.752768][ T9856] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.817553][ T9856] device hsr_slave_0 entered promiscuous mode [ 80.875894][ T9856] device hsr_slave_1 entered promiscuous mode [ 81.018411][ T9856] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.089091][ T9856] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.148228][ T9856] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.208153][ T9856] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.261637][ T9856] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.269009][ T9856] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.276985][ T9856] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.284176][ T9856] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.329253][ T9856] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.342525][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.353735][ T2688] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.362254][ T2688] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.370753][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 81.383608][ T9856] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.394636][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.403491][ T2692] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.410747][ T2692] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.422678][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.431914][ T2688] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.439023][ T2688] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.459232][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.468565][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.480925][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.492978][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.504450][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.527859][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.535335][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.549484][ T9856] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.568652][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.578433][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.596771][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.607767][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.620407][ T9856] device veth0_vlan entered promiscuous mode [ 81.627207][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.635056][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.647848][ T9856] device veth1_vlan entered promiscuous mode [ 81.668902][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.677493][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.685480][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.695441][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.708951][ T9856] device veth0_macvtap entered promiscuous mode [ 81.720265][ T9856] device veth1_macvtap entered promiscuous mode [ 81.736676][ T9856] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.744469][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 81.754163][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 81.762392][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 81.771702][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 81.783157][ T9856] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.791800][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 81.801321][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 81.963422][ T9856] BUG: unable to handle page fault for address: ffffed1018fcde87 [ 81.971169][ T9856] #PF: supervisor read access in kernel mode [ 81.977176][ T9856] #PF: error_code(0x0000) - not-present page [ 81.983179][ T9856] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 81.989682][ T9856] Oops: 0000 [#1] PREEMPT SMP KASAN [ 81.994870][ T9856] CPU: 0 PID: 9856 Comm: syz-executor138 Not tainted 5.6.0-rc2-syzkaller #0 [ 82.003564][ T9856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.013624][ T9856] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 82.020382][ T9856] Code: 45 85 e4 0f 84 aa 03 00 00 e8 5e 41 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 [ 82.040025][ T9856] RSP: 0018:ffffc900056c7248 EFLAGS: 00010a06 [ 82.046101][ T9856] RAX: dffffc0000000000 RBX: ffff8880a7e6f438 RCX: ffffffff86704654 [ 82.054055][ T9856] RDX: 1ffff11018fcde87 RSI: ffffffff86704662 RDI: 0000000000000005 [ 82.062027][ T9856] RBP: ffffc900056c73b0 R08: ffff8880a2c30240 R09: ffffc900056c7318 [ 82.070042][ T9856] R10: fffff52000ad8e68 R11: ffffc900056c7347 R12: 0000000000000010 [ 82.077998][ T9856] R13: ffff8880c7e6f438 R14: ffff8880a7e6f448 R15: ffffc900056c7388 [ 82.085967][ T9856] FS: 0000000001b57940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 82.094993][ T9856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.101585][ T9856] CR2: ffffed1018fcde87 CR3: 0000000094fb0000 CR4: 00000000001406f0 [ 82.109561][ T9856] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.117518][ T9856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.125476][ T9856] Call Trace: [ 82.128762][ T9856] ? __mutex_lock+0x458/0x13c0 [ 82.133548][ T9856] ? lock_downgrade+0x920/0x920 [ 82.138399][ T9856] ? ethnl_bitmap32_clear+0x390/0x390 [ 82.144209][ T9856] ? mutex_trylock+0x2d0/0x2d0 [ 82.148985][ T9856] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 82.155238][ T9856] ? ethnl_default_notify+0x6b0/0x6b0 [ 82.160600][ T9856] ? sock_sendmsg+0xd7/0x130 [ 82.165185][ T9856] ethnl_update_bitset+0x4d/0x67 [ 82.170127][ T9856] ethnl_set_linkmodes+0x461/0xc30 [ 82.175228][ T9856] ? lock_downgrade+0x920/0x920 [ 82.180171][ T9856] ? linkmodes_prepare_data+0x2a0/0x2a0 [ 82.185717][ T9856] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.191943][ T9856] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 82.197458][ T9856] ? kfree_skbmem+0xfb/0x1c0 [ 82.202042][ T9856] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.208285][ T9856] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.214525][ T9856] ? security_capable+0x95/0xc0 [ 82.219394][ T9856] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.225626][ T9856] ? genl_family_rcv_msg_attrs_parse+0x1c6/0x300 [ 82.231954][ T9856] genl_rcv_msg+0x67d/0xea0 [ 82.236439][ T9856] ? genl_rcv_msg+0x67d/0xea0 [ 82.241102][ T9856] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 82.247451][ T9856] ? __kasan_check_read+0x11/0x20 [ 82.252461][ T9856] ? find_held_lock+0x35/0x130 [ 82.257203][ T9856] netlink_rcv_skb+0x177/0x450 [ 82.261943][ T9856] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 82.268345][ T9856] ? netlink_ack+0xb50/0xb50 [ 82.272913][ T9856] ? __kasan_check_write+0x14/0x20 [ 82.278082][ T9856] ? netlink_deliver_tap+0x248/0xbf0 [ 82.283388][ T9856] genl_rcv+0x29/0x40 [ 82.287365][ T9856] netlink_unicast+0x59e/0x7e0 [ 82.292163][ T9856] ? netlink_attachskb+0x870/0x870 [ 82.297264][ T9856] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 82.302974][ T9856] ? __check_object_size+0x3d/0x437 [ 82.308211][ T9856] netlink_sendmsg+0x91c/0xea0 [ 82.312970][ T9856] ? netlink_unicast+0x7e0/0x7e0 [ 82.317990][ T9856] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 82.323520][ T9856] ? apparmor_socket_sendmsg+0x2a/0x30 [ 82.328958][ T9856] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.335196][ T9856] ? security_socket_sendmsg+0x8d/0xc0 [ 82.340635][ T9856] ? netlink_unicast+0x7e0/0x7e0 [ 82.345557][ T9856] sock_sendmsg+0xd7/0x130 [ 82.350228][ T9856] ____sys_sendmsg+0x753/0x880 [ 82.354974][ T9856] ? kernel_sendmsg+0x50/0x50 [ 82.359641][ T9856] ? debug_object_active_state+0x28a/0x350 [ 82.365437][ T9856] ? find_held_lock+0x35/0x130 [ 82.370193][ T9856] ___sys_sendmsg+0x100/0x170 [ 82.374929][ T9856] ? sendmsg_copy_msghdr+0x70/0x70 [ 82.380081][ T9856] ? lockdep_hardirqs_on+0x421/0x5e0 [ 82.385606][ T9856] ? __kasan_check_read+0x11/0x20 [ 82.390696][ T9856] ? mark_lock+0xc2/0x1220 [ 82.395101][ T9856] ? __kasan_check_read+0x11/0x20 [ 82.400117][ T9856] ? __lock_acquire+0x16f2/0x4a00 [ 82.405127][ T9856] ? debug_object_deactivate+0x320/0x320 [ 82.410754][ T9856] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 82.416978][ T9856] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.423226][ T9856] ? __fget_light+0x1ad/0x270 [ 82.427882][ T9856] ? __fdget+0x1b/0x20 [ 82.431967][ T9856] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 82.438192][ T9856] __sys_sendmsg+0x105/0x1d0 [ 82.443642][ T9856] ? __sys_sendmsg_sock+0xc0/0xc0 [ 82.448682][ T9856] ? lockdep_hardirqs_on+0x421/0x5e0 [ 82.453954][ T9856] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 82.459409][ T9856] ? do_syscall_64+0x26/0x790 [ 82.464070][ T9856] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.470115][ T9856] ? do_syscall_64+0x26/0x790 [ 82.476350][ T9856] __x64_sys_sendmsg+0x78/0xb0 [ 82.481097][ T9856] do_syscall_64+0xfa/0x790 [ 82.485586][ T9856] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.491472][ T9856] RIP: 0033:0x448339 [ 82.495353][ T9856] Code: 43 02 00 85 c0 b8 00 00 00 00 48 0f 44 c3 5b c3 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 2b d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 82.514997][ T9856] RSP: 002b:00007fff7e4462a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.523448][ T9856] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000448339 [ 82.531563][ T9856] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 82.540404][ T9856] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000003 [ 82.548363][ T9856] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.556463][ T9856] R13: 0000000000405a80 R14: 0000000000000000 R15: 0000000000000000 [ 82.564427][ T9856] Modules linked in: [ 82.568351][ T9856] CR2: ffffed1018fcde87 [ 82.572490][ T9856] ---[ end trace 2ed8ec0f4f3f45ad ]--- [ 82.577940][ T9856] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 82.584752][ T9856] Code: 45 85 e4 0f 84 aa 03 00 00 e8 5e 41 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 [ 82.604344][ T9856] RSP: 0018:ffffc900056c7248 EFLAGS: 00010a06 [ 82.610418][ T9856] RAX: dffffc0000000000 RBX: ffff8880a7e6f438 RCX: ffffffff86704654 [ 82.618493][ T9856] RDX: 1ffff11018fcde87 RSI: ffffffff86704662 RDI: 0000000000000005 [ 82.626450][ T9856] RBP: ffffc900056c73b0 R08: ffff8880a2c30240 R09: ffffc900056c7318 [ 82.634412][ T9856] R10: fffff52000ad8e68 R11: ffffc900056c7347 R12: 0000000000000010 [ 82.642465][ T9856] R13: ffff8880c7e6f438 R14: ffff8880a7e6f448 R15: ffffc900056c7388 [ 82.650426][ T9856] FS: 0000000001b57940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 82.659340][ T9856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.665911][ T9856] CR2: ffffed1018fcde87 CR3: 0000000094fb0000 CR4: 00000000001406f0 [ 82.673875][ T9856] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.682013][ T9856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.689973][ T9856] Kernel panic - not syncing: Fatal exception [ 82.697597][ T9856] Kernel Offset: disabled [ 82.701958][ T9856] Rebooting in 86400 seconds..