[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 77.182777][ T27] audit: type=1800 audit(1582784596.538:25): pid=9223 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 77.216251][ T27] audit: type=1800 audit(1582784596.538:26): pid=9223 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 77.253719][ T27] audit: type=1800 audit(1582784596.538:27): pid=9223 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 '10.128.0.228' (ECDSA) to the list of known hosts. syzkaller login: [ 88.765764][ T9376] IPVS: ftp: loaded support on port[0] = 21 [ 88.823575][ T9376] chnl_net:caif_netlink_parms(): no params data found [ 88.859507][ T9376] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.866781][ T9376] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.874776][ T9376] device bridge_slave_0 entered promiscuous mode [ 88.882737][ T9376] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.890067][ T9376] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.898139][ T9376] device bridge_slave_1 entered promiscuous mode [ 88.913823][ T9376] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.924408][ T9376] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 88.942925][ T9376] team0: Port device team_slave_0 added [ 88.950482][ T9376] team0: Port device team_slave_1 added [ 88.964344][ T9376] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 88.971339][ T9376] 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. [ 88.997787][ T9376] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 89.009886][ T9376] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 89.016822][ T9376] 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. [ 89.042796][ T9376] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 89.109086][ T9376] device hsr_slave_0 entered promiscuous mode [ 89.147521][ T9376] device hsr_slave_1 entered promiscuous mode [ 89.257734][ T9376] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 89.309981][ T9376] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 89.339681][ T9376] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 89.389821][ T9376] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 89.440593][ T9376] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.447741][ T9376] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.455208][ T9376] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.462345][ T9376] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.503670][ T9376] 8021q: adding VLAN 0 to HW filter on device bond0 [ 89.516809][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 89.526340][ T2696] bridge0: port 1(bridge_slave_0) entered disabled state [ 89.534621][ T2696] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.542587][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 89.555143][ T9376] 8021q: adding VLAN 0 to HW filter on device team0 [ 89.566586][ T3075] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.575017][ T3075] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.582088][ T3075] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.594616][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.603805][ T2696] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.610877][ T2696] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.629473][ T3075] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 89.648787][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 89.656749][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 89.665936][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.674397][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.683997][ T9376] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.701389][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 89.709156][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.722381][ T9376] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.740636][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 89.759884][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 89.768582][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 89.776141][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 89.786351][ T9376] device veth0_vlan entered promiscuous mode [ 89.799280][ T9376] device veth1_vlan entered promiscuous mode [ 89.817820][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 89.825708][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 89.836468][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 89.845450][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 89.856737][ T9376] device veth0_macvtap entered promiscuous mode [ 89.866886][ T9376] device veth1_macvtap entered promiscuous mode [ 89.882722][ T9376] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 89.890692][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 89.898880][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 89.906744][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 89.916531][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 89.928695][ T9376] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 89.937899][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 89.946296][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 90.123959][ T9376] BUG: unable to handle page fault for address: ffffed1018601e87 [ 90.131679][ T9376] #PF: supervisor read access in kernel mode [ 90.137638][ T9376] #PF: error_code(0x0000) - not-present page [ 90.143595][ T9376] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 90.150076][ T9376] Oops: 0000 [#1] PREEMPT SMP KASAN [ 90.155249][ T9376] CPU: 0 PID: 9376 Comm: syz-executor107 Not tainted 5.6.0-rc3-syzkaller #0 [ 90.163891][ T9376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.173983][ T9376] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 90.180721][ T9376] 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 [ 90.200303][ T9376] RSP: 0018:ffffc9000c10f248 EFLAGS: 00010a07 [ 90.206346][ T9376] RAX: dffffc0000000000 RBX: ffff8880a300f43c RCX: ffffffff867055d4 [ 90.214339][ T9376] RDX: 1ffff11018601e87 RSI: ffffffff867055e2 RDI: 0000000000000005 [ 90.222294][ T9376] RBP: ffffc9000c10f3b0 R08: ffff888094208300 R09: ffffc9000c10f318 [ 90.230242][ T9376] R10: fffff52001821e68 R11: ffffc9000c10f347 R12: 0000000000000010 [ 90.238234][ T9376] R13: ffff8880c300f43c R14: ffff8880a300f44c R15: ffffc9000c10f388 [ 90.246182][ T9376] FS: 0000000002387880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 90.255136][ T9376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.261696][ T9376] CR2: ffffed1018601e87 CR3: 00000000979cb000 CR4: 00000000001406f0 [ 90.269651][ T9376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.277602][ T9376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.285566][ T9376] Call Trace: [ 90.288881][ T9376] ? __mutex_lock+0x458/0x13c0 [ 90.293622][ T9376] ? lock_downgrade+0x920/0x920 [ 90.298451][ T9376] ? ethnl_bitmap32_clear+0x390/0x390 [ 90.303806][ T9376] ? mutex_trylock+0x2d0/0x2d0 [ 90.308560][ T9376] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 90.314781][ T9376] ? ethnl_default_notify+0x6b0/0x6b0 [ 90.320129][ T9376] ? sock_sendmsg+0xd7/0x130 [ 90.324699][ T9376] ethnl_update_bitset+0x4d/0x67 [ 90.329613][ T9376] ethnl_set_linkmodes+0x461/0xc30 [ 90.334704][ T9376] ? lock_downgrade+0x920/0x920 [ 90.339536][ T9376] ? linkmodes_prepare_data+0x2a0/0x2a0 [ 90.345069][ T9376] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.351289][ T9376] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 90.356720][ T9376] ? kfree_skbmem+0xfb/0x1c0 [ 90.361289][ T9376] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.367509][ T9376] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.373724][ T9376] ? security_capable+0x95/0xc0 [ 90.378599][ T9376] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.384818][ T9376] ? genl_family_rcv_msg_attrs_parse+0x1c6/0x300 [ 90.391127][ T9376] genl_rcv_msg+0x67d/0xea0 [ 90.395604][ T9376] ? genl_rcv_msg+0x67d/0xea0 [ 90.400304][ T9376] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 90.406609][ T9376] ? __kasan_check_read+0x11/0x20 [ 90.411611][ T9376] ? find_held_lock+0x35/0x130 [ 90.416355][ T9376] netlink_rcv_skb+0x177/0x450 [ 90.421097][ T9376] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 90.427400][ T9376] ? netlink_ack+0xb50/0xb50 [ 90.432001][ T9376] ? __kasan_check_write+0x14/0x20 [ 90.437093][ T9376] ? netlink_deliver_tap+0x248/0xbf0 [ 90.442359][ T9376] genl_rcv+0x29/0x40 [ 90.446321][ T9376] netlink_unicast+0x59e/0x7e0 [ 90.451063][ T9376] ? netlink_attachskb+0x870/0x870 [ 90.456151][ T9376] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 90.461853][ T9376] ? __check_object_size+0x3d/0x437 [ 90.467028][ T9376] netlink_sendmsg+0x91c/0xea0 [ 90.471778][ T9376] ? netlink_unicast+0x7e0/0x7e0 [ 90.476698][ T9376] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 90.482226][ T9376] ? apparmor_socket_sendmsg+0x2a/0x30 [ 90.487674][ T9376] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.493886][ T9376] ? security_socket_sendmsg+0x8d/0xc0 [ 90.499361][ T9376] ? netlink_unicast+0x7e0/0x7e0 [ 90.504271][ T9376] sock_sendmsg+0xd7/0x130 [ 90.508671][ T9376] ____sys_sendmsg+0x753/0x880 [ 90.513407][ T9376] ? kernel_sendmsg+0x50/0x50 [ 90.518130][ T9376] ? debug_object_active_state+0x28a/0x350 [ 90.523917][ T9376] ? find_held_lock+0x35/0x130 [ 90.528659][ T9376] ___sys_sendmsg+0x100/0x170 [ 90.533311][ T9376] ? sendmsg_copy_msghdr+0x70/0x70 [ 90.538402][ T9376] ? lockdep_hardirqs_on+0x421/0x5e0 [ 90.543663][ T9376] ? __kasan_check_read+0x11/0x20 [ 90.548659][ T9376] ? mark_lock+0xc2/0x1220 [ 90.553053][ T9376] ? __kasan_check_read+0x11/0x20 [ 90.558054][ T9376] ? __lock_acquire+0x16f2/0x4a00 [ 90.563057][ T9376] ? debug_object_deactivate+0x320/0x320 [ 90.568665][ T9376] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 90.574798][ T9376] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.581019][ T9376] ? __fget_light+0x1ad/0x270 [ 90.585668][ T9376] ? __fdget+0x1b/0x20 [ 90.589746][ T9376] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 90.595968][ T9376] __sys_sendmsg+0x105/0x1d0 [ 90.600537][ T9376] ? __sys_sendmsg_sock+0xc0/0xc0 [ 90.605532][ T9376] ? lockdep_hardirqs_on+0x421/0x5e0 [ 90.610801][ T9376] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 90.616235][ T9376] ? do_syscall_64+0x26/0x790 [ 90.620887][ T9376] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.626926][ T9376] ? do_syscall_64+0x26/0x790 [ 90.631580][ T9376] __x64_sys_sendmsg+0x78/0xb0 [ 90.636316][ T9376] do_syscall_64+0xfa/0x790 [ 90.640798][ T9376] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.646708][ T9376] RIP: 0033:0x447b69 [ 90.650579][ T9376] Code: 45 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 [ 90.670155][ T9376] RSP: 002b:00007ffc22ba4f58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 90.678552][ T9376] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000447b69 [ 90.686495][ T9376] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 90.694438][ T9376] RBP: 00007ffc22ba4fa0 R08: 0000000000000000 R09: 00000000bb1414ac [ 90.702387][ T9376] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 90.710331][ T9376] R13: 00000000004052b0 R14: 0000000000000000 R15: 0000000000000000 [ 90.718279][ T9376] Modules linked in: [ 90.722146][ T9376] CR2: ffffed1018601e87 [ 90.726280][ T9376] ---[ end trace c46e550a014046f1 ]--- [ 90.731711][ T9376] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 90.738441][ T9376] 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 [ 90.758020][ T9376] RSP: 0018:ffffc9000c10f248 EFLAGS: 00010a07 [ 90.764060][ T9376] RAX: dffffc0000000000 RBX: ffff8880a300f43c RCX: ffffffff867055d4 [ 90.772042][ T9376] RDX: 1ffff11018601e87 RSI: ffffffff867055e2 RDI: 0000000000000005 [ 90.779989][ T9376] RBP: ffffc9000c10f3b0 R08: ffff888094208300 R09: ffffc9000c10f318 [ 90.787933][ T9376] R10: fffff52001821e68 R11: ffffc9000c10f347 R12: 0000000000000010 [ 90.795877][ T9376] R13: ffff8880c300f43c R14: ffff8880a300f44c R15: ffffc9000c10f388 [ 90.803833][ T9376] FS: 0000000002387880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 90.812733][ T9376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.819291][ T9376] CR2: ffffed1018601e87 CR3: 00000000979cb000 CR4: 00000000001406f0 [ 90.827236][ T9376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.835180][ T9376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.843126][ T9376] Kernel panic - not syncing: Fatal exception [ 90.850281][ T9376] Kernel Offset: disabled [ 90.854598][ T9376] Rebooting in 86400 seconds..