[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 81.452745][ T27] audit: type=1800 audit(1583150844.624:25): pid=9621 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 81.485701][ T27] audit: type=1800 audit(1583150844.624:26): pid=9621 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 81.510011][ T27] audit: type=1800 audit(1583150844.624:27): pid=9621 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 '10.128.0.54' (ECDSA) to the list of known hosts. syzkaller login: [ 93.242900][ T9774] IPVS: ftp: loaded support on port[0] = 21 [ 93.300068][ T9774] chnl_net:caif_netlink_parms(): no params data found [ 93.340594][ T9774] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.348245][ T9774] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.356616][ T9774] device bridge_slave_0 entered promiscuous mode [ 93.364894][ T9774] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.372309][ T9774] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.380006][ T9774] device bridge_slave_1 entered promiscuous mode [ 93.397318][ T9774] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 93.408719][ T9774] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 93.428046][ T9774] team0: Port device team_slave_0 added [ 93.435446][ T9774] team0: Port device team_slave_1 added [ 93.450061][ T9774] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 93.458507][ T9774] 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. [ 93.485743][ T9774] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 93.498342][ T9774] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 93.506450][ T9774] 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. [ 93.533205][ T9774] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 93.608039][ T9774] device hsr_slave_0 entered promiscuous mode [ 93.666029][ T9774] device hsr_slave_1 entered promiscuous mode [ 93.795550][ T9774] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 93.849203][ T9774] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 93.908093][ T9774] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 93.947827][ T9774] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 94.009538][ T9774] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.016919][ T9774] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.024617][ T9774] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.031769][ T9774] bridge0: port 1(bridge_slave_0) entered forwarding state [ 94.075532][ T9774] 8021q: adding VLAN 0 to HW filter on device bond0 [ 94.089842][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 94.100249][ T2932] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.109279][ T2932] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.117984][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 94.130968][ T9774] 8021q: adding VLAN 0 to HW filter on device team0 [ 94.141533][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 94.150086][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.157334][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 94.176088][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 94.184400][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.191770][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.212601][ T9774] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 94.223746][ T9774] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 94.238016][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 94.247090][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 94.255471][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 94.264505][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 94.274566][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 94.282291][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 94.300170][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 94.308365][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 94.320356][ T9774] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 94.339028][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 94.348479][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 94.368502][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 94.378474][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 94.389556][ T9774] device veth0_vlan entered promiscuous mode [ 94.396460][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 94.404114][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 94.417251][ T9774] device veth1_vlan entered promiscuous mode [ 94.438497][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 94.447447][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 94.455639][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 94.464311][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 94.477115][ T9774] device veth0_macvtap entered promiscuous mode [ 94.487731][ T9774] device veth1_macvtap entered promiscuous mode [ 94.504403][ T9774] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 94.512597][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 94.520964][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 94.529783][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 94.539160][ T2932] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 94.551806][ T9774] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 94.559428][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 94.568663][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 94.723394][ T9774] BUG: unable to handle page fault for address: ffffed1018053c87 [ 94.731236][ T9774] #PF: supervisor read access in kernel mode [ 94.737239][ T9774] #PF: error_code(0x0000) - not-present page [ 94.743194][ T9774] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 94.749678][ T9774] Oops: 0000 [#1] PREEMPT SMP KASAN [ 94.754867][ T9774] CPU: 0 PID: 9774 Comm: syz-executor805 Not tainted 5.6.0-rc3-syzkaller #0 [ 94.763522][ T9774] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.773615][ T9774] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 94.780496][ T9774] 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 [ 94.800206][ T9774] RSP: 0018:ffffc90006af7248 EFLAGS: 00010a06 [ 94.806254][ T9774] RAX: dffffc0000000000 RBX: ffff8880a029e438 RCX: ffffffff867065d4 [ 94.814219][ T9774] RDX: 1ffff11018053c87 RSI: ffffffff867065e2 RDI: 0000000000000005 [ 94.822171][ T9774] RBP: ffffc90006af73b0 R08: ffff88809fcbe1c0 R09: ffffc90006af7318 [ 94.830145][ T9774] R10: fffff52000d5ee68 R11: ffffc90006af7347 R12: 0000000000000010 [ 94.838108][ T9774] R13: ffff8880c029e438 R14: ffff8880a029e448 R15: ffffc90006af7388 [ 94.846075][ T9774] FS: 000000000180e940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 94.854977][ T9774] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.861540][ T9774] CR2: ffffed1018053c87 CR3: 00000000938bc000 CR4: 00000000001406f0 [ 94.869505][ T9774] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 94.877553][ T9774] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 94.885530][ T9774] Call Trace: [ 94.888818][ T9774] ? __mutex_lock+0x458/0x13c0 [ 94.893574][ T9774] ? lock_downgrade+0x920/0x920 [ 94.898421][ T9774] ? ethnl_bitmap32_clear+0x390/0x390 [ 94.903788][ T9774] ? mutex_trylock+0x2d0/0x2d0 [ 94.908547][ T9774] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 94.914772][ T9774] ? ethnl_default_notify+0x6b0/0x6b0 [ 94.920245][ T9774] ? sock_sendmsg+0xd7/0x130 [ 94.924821][ T9774] ethnl_update_bitset+0x4d/0x67 [ 94.929754][ T9774] ethnl_set_linkmodes+0x461/0xc30 [ 94.934857][ T9774] ? lock_downgrade+0x920/0x920 [ 94.939704][ T9774] ? linkmodes_prepare_data+0x2a0/0x2a0 [ 94.945242][ T9774] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.951500][ T9774] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 94.956944][ T9774] ? kfree_skbmem+0xfb/0x1c0 [ 94.961521][ T9774] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.967762][ T9774] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.973995][ T9774] ? security_capable+0x95/0xc0 [ 94.978869][ T9774] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.985269][ T9774] ? genl_family_rcv_msg_attrs_parse+0x1c6/0x300 [ 94.991947][ T9774] genl_rcv_msg+0x67d/0xea0 [ 94.996520][ T9774] ? genl_rcv_msg+0x67d/0xea0 [ 95.001191][ T9774] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 95.007497][ T9774] ? __kasan_check_read+0x11/0x20 [ 95.012511][ T9774] ? find_held_lock+0x35/0x130 [ 95.017261][ T9774] netlink_rcv_skb+0x177/0x450 [ 95.022001][ T9774] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 95.028319][ T9774] ? netlink_ack+0xb50/0xb50 [ 95.032886][ T9774] ? __kasan_check_write+0x14/0x20 [ 95.038000][ T9774] ? netlink_deliver_tap+0x248/0xbf0 [ 95.043319][ T9774] genl_rcv+0x29/0x40 [ 95.047311][ T9774] netlink_unicast+0x59e/0x7e0 [ 95.052084][ T9774] ? netlink_attachskb+0x870/0x870 [ 95.057182][ T9774] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 95.062883][ T9774] ? __check_object_size+0x3d/0x437 [ 95.068063][ T9774] netlink_sendmsg+0x91c/0xea0 [ 95.072805][ T9774] ? netlink_unicast+0x7e0/0x7e0 [ 95.077754][ T9774] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 95.083296][ T9774] ? apparmor_socket_sendmsg+0x2a/0x30 [ 95.088794][ T9774] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.095058][ T9774] ? security_socket_sendmsg+0x8d/0xc0 [ 95.100516][ T9774] ? netlink_unicast+0x7e0/0x7e0 [ 95.105436][ T9774] sock_sendmsg+0xd7/0x130 [ 95.109886][ T9774] ____sys_sendmsg+0x753/0x880 [ 95.114650][ T9774] ? kernel_sendmsg+0x50/0x50 [ 95.119325][ T9774] ? debug_object_active_state+0x28a/0x350 [ 95.125123][ T9774] ? find_held_lock+0x35/0x130 [ 95.129893][ T9774] ___sys_sendmsg+0x100/0x170 [ 95.136485][ T9774] ? sendmsg_copy_msghdr+0x70/0x70 [ 95.141603][ T9774] ? lockdep_hardirqs_on+0x421/0x5e0 [ 95.147068][ T9774] ? __kasan_check_read+0x11/0x20 [ 95.152094][ T9774] ? mark_lock+0xc2/0x1220 [ 95.156634][ T9774] ? __kasan_check_read+0x11/0x20 [ 95.161665][ T9774] ? __lock_acquire+0x16f2/0x4a00 [ 95.166681][ T9774] ? debug_object_deactivate+0x320/0x320 [ 95.172299][ T9774] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 95.178453][ T9774] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.184697][ T9774] ? __fget_light+0x1ad/0x270 [ 95.189368][ T9774] ? __fdget+0x1b/0x20 [ 95.193417][ T9774] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 95.199651][ T9774] __sys_sendmsg+0x105/0x1d0 [ 95.204221][ T9774] ? __sys_sendmsg_sock+0xc0/0xc0 [ 95.209333][ T9774] ? lockdep_hardirqs_on+0x421/0x5e0 [ 95.214641][ T9774] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 95.220091][ T9774] ? do_syscall_64+0x26/0x790 [ 95.224747][ T9774] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.230888][ T9774] ? do_syscall_64+0x26/0x790 [ 95.235581][ T9774] __x64_sys_sendmsg+0x78/0xb0 [ 95.240337][ T9774] do_syscall_64+0xfa/0x790 [ 95.244836][ T9774] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.250733][ T9774] RIP: 0033:0x448519 [ 95.254610][ T9774] 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 [ 95.274226][ T9774] RSP: 002b:00007ffd031cd9d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.282721][ T9774] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000448519 [ 95.290685][ T9774] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 95.298651][ T9774] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000003 [ 95.306613][ T9774] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 95.314595][ T9774] R13: 0000000000405c60 R14: 0000000000000000 R15: 0000000000000000 [ 95.322560][ T9774] Modules linked in: [ 95.326519][ T9774] CR2: ffffed1018053c87 [ 95.330720][ T9774] ---[ end trace 9364570f1840cf0b ]--- [ 95.336167][ T9774] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 95.342917][ T9774] 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 [ 95.362879][ T9774] RSP: 0018:ffffc90006af7248 EFLAGS: 00010a06 [ 95.368934][ T9774] RAX: dffffc0000000000 RBX: ffff8880a029e438 RCX: ffffffff867065d4 [ 95.376897][ T9774] RDX: 1ffff11018053c87 RSI: ffffffff867065e2 RDI: 0000000000000005 [ 95.384861][ T9774] RBP: ffffc90006af73b0 R08: ffff88809fcbe1c0 R09: ffffc90006af7318 [ 95.392925][ T9774] R10: fffff52000d5ee68 R11: ffffc90006af7347 R12: 0000000000000010 [ 95.400887][ T9774] R13: ffff8880c029e438 R14: ffff8880a029e448 R15: ffffc90006af7388 [ 95.408893][ T9774] FS: 000000000180e940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 95.417917][ T9774] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.424509][ T9774] CR2: ffffed1018053c87 CR3: 00000000938bc000 CR4: 00000000001406f0 [ 95.432484][ T9774] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 95.440443][ T9774] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 95.448402][ T9774] Kernel panic - not syncing: Fatal exception [ 95.455995][ T9774] Kernel Offset: disabled [ 95.460328][ T9774] Rebooting in 86400 seconds..