[ 93.271888][ T27] audit: type=1800 audit(1580093488.469:25): pid=9651 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 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. [ 94.405328][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 94.405339][ T27] audit: type=1800 audit(1580093489.609:29): pid=9651 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 94.431674][ T27] audit: type=1800 audit(1580093489.609:30): pid=9651 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. 2020/01/27 02:51:41 parsed 1 programs 2020/01/27 02:51:43 executed programs: 0 syzkaller login: [ 108.307780][ T9824] IPVS: ftp: loaded support on port[0] = 21 [ 108.370221][ T9824] chnl_net:caif_netlink_parms(): no params data found [ 108.402101][ T9824] bridge0: port 1(bridge_slave_0) entered blocking state [ 108.409764][ T9824] bridge0: port 1(bridge_slave_0) entered disabled state [ 108.418003][ T9824] device bridge_slave_0 entered promiscuous mode [ 108.427001][ T9824] bridge0: port 2(bridge_slave_1) entered blocking state [ 108.434251][ T9824] bridge0: port 2(bridge_slave_1) entered disabled state [ 108.442031][ T9824] device bridge_slave_1 entered promiscuous mode [ 108.460229][ T9824] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 108.471177][ T9824] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 108.492261][ T9824] team0: Port device team_slave_0 added [ 108.501419][ T9824] team0: Port device team_slave_1 added [ 108.517946][ T9824] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 108.525083][ T9824] 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. [ 108.551321][ T9824] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 108.564374][ T9824] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 108.571465][ T9824] 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. [ 108.598159][ T9824] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 108.655374][ T9824] device hsr_slave_0 entered promiscuous mode [ 108.693315][ T9824] device hsr_slave_1 entered promiscuous mode [ 108.831195][ T9824] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 108.876200][ T9824] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 108.936213][ T9824] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 108.995042][ T9824] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 109.047994][ T9824] bridge0: port 2(bridge_slave_1) entered blocking state [ 109.055502][ T9824] bridge0: port 2(bridge_slave_1) entered forwarding state [ 109.063655][ T9824] bridge0: port 1(bridge_slave_0) entered blocking state [ 109.070888][ T9824] bridge0: port 1(bridge_slave_0) entered forwarding state [ 109.116683][ T9824] 8021q: adding VLAN 0 to HW filter on device bond0 [ 109.129617][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 109.141075][ T2674] bridge0: port 1(bridge_slave_0) entered disabled state [ 109.149879][ T2674] bridge0: port 2(bridge_slave_1) entered disabled state [ 109.158761][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 109.173288][ T9824] 8021q: adding VLAN 0 to HW filter on device team0 [ 109.184967][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 109.193915][ T3233] bridge0: port 1(bridge_slave_0) entered blocking state [ 109.201111][ T3233] bridge0: port 1(bridge_slave_0) entered forwarding state [ 109.225819][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 109.235585][ T2674] bridge0: port 2(bridge_slave_1) entered blocking state [ 109.242668][ T2674] bridge0: port 2(bridge_slave_1) entered forwarding state [ 109.250936][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 109.259659][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 109.268505][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 109.285580][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 109.294393][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 109.306060][ T9824] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 109.324554][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 109.332051][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 109.345887][ T9824] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 109.366307][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 109.387355][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 109.396486][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 109.406244][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 109.414475][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 109.425584][ T9824] device veth0_vlan entered promiscuous mode [ 109.438690][ T9824] device veth1_vlan entered promiscuous mode [ 109.461949][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 109.470929][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 109.479379][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 109.488325][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 109.499533][ T9824] device veth0_macvtap entered promiscuous mode [ 109.510790][ T9824] device veth1_macvtap entered promiscuous mode [ 109.529446][ T9824] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 109.537609][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 109.546275][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 109.554653][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 109.564198][ T2674] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 109.577345][ T9824] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 109.585223][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 109.595012][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 110.581663][ T9827] kasan: CONFIG_KASAN_INLINE enabled [ 110.587173][ T9827] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 110.595473][ T9827] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 110.602424][ T9827] CPU: 1 PID: 9827 Comm: syz-executor.0 Not tainted 5.5.0-rc7-syzkaller #0 [ 110.614893][ T9827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 110.625204][ T9827] RIP: 0010:strlen+0x1f/0xa0 [ 110.629825][ T9827] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 110.649516][ T9827] RSP: 0018:ffffc900020e6e80 EFLAGS: 00010282 [ 110.655796][ T9827] RAX: dffffc0000000000 RBX: ffff888095c4d718 RCX: 1ffffffff14f6d0e [ 110.664248][ T9827] RDX: 0000000000000022 RSI: ffffffff8673a421 RDI: 0000000000000114 [ 110.672310][ T9827] RBP: ffffc900020e6e98 R08: ffff8880a7f080c0 R09: ffffed1012b89ae3 [ 110.680855][ T9827] R10: ffffed1012b89ae2 R11: ffff888095c4d717 R12: 0000000000000114 [ 110.688824][ T9827] R13: 0000000000000104 R14: ffff8880a0526a00 R15: ffff888095c4d700 [ 110.696870][ T9827] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000009408900 [ 110.705989][ T9827] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 110.712694][ T9827] CR2: 0000000020000300 CR3: 00000000a2fcf000 CR4: 00000000001406e0 [ 110.720664][ T9827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 110.728767][ T9827] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 110.736972][ T9827] Call Trace: [ 110.740257][ T9827] ip_set_comment_free+0x69/0xe0 [ 110.745186][ T9827] hash_net4_add+0x1b9a/0x2200 [ 110.750046][ T9827] hash_net4_uadt+0x596/0x940 [ 110.754714][ T9827] ? hash_net4_head+0x730/0x730 [ 110.759561][ T9827] ? hash_net6_uadt+0x880/0x880 [ 110.764420][ T9827] call_ad+0x1a0/0x5a0 [ 110.768502][ T9827] ? start_msg+0x220/0x220 [ 110.773200][ T9827] ? nla_memcpy+0xb0/0xb0 [ 110.777725][ T9827] ? __nla_parse+0x43/0x60 [ 110.782139][ T9827] ip_set_ad.isra.0+0x572/0xb20 [ 110.787131][ T9827] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 110.792785][ T9827] ? nla_memcpy+0xb0/0xb0 [ 110.797199][ T9827] ? lock_downgrade+0x920/0x920 [ 110.802051][ T9827] ip_set_uadd+0x37/0x50 [ 110.806402][ T9827] ? ip_set_udel+0x50/0x50 [ 110.810920][ T9827] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 110.815982][ T9827] ? nfnetlink_bind+0x2c0/0x2c0 [ 110.821121][ T9827] ? find_held_lock+0x35/0x130 [ 110.826013][ T9827] ? __local_bh_enable_ip+0x15a/0x270 [ 110.831533][ T9827] ? __dev_queue_xmit+0x175c/0x35c0 [ 110.836787][ T9827] ? __local_bh_enable_ip+0x15a/0x270 [ 110.842163][ T9827] ? lockdep_hardirqs_on+0x421/0x5e0 [ 110.847541][ T9827] ? __dev_queue_xmit+0x172e/0x35c0 [ 110.852731][ T9827] ? trace_hardirqs_on+0x67/0x240 [ 110.857757][ T9827] ? __dev_queue_xmit+0x172e/0x35c0 [ 110.863074][ T9827] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 110.869324][ T9827] ? apparmor_capable+0x497/0x900 [ 110.874438][ T9827] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 110.881023][ T9827] ? __kasan_check_read+0x11/0x20 [ 110.886188][ T9827] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 110.891638][ T9827] netlink_rcv_skb+0x177/0x450 [ 110.896657][ T9827] ? nfnetlink_bind+0x2c0/0x2c0 [ 110.901644][ T9827] ? netlink_ack+0xb50/0xb50 [ 110.906320][ T9827] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 110.912677][ T9827] ? ns_capable_common+0x93/0x100 [ 110.917702][ T9827] ? ns_capable+0x20/0x30 [ 110.922381][ T9827] ? __netlink_ns_capable+0x104/0x140 [ 110.927880][ T9827] nfnetlink_rcv+0x1ba/0x460 [ 110.932640][ T9827] ? nfnetlink_rcv_batch+0x17b0/0x17b0 [ 110.938131][ T9827] ? netlink_deliver_tap+0x24a/0xbe0 [ 110.943418][ T9827] netlink_unicast+0x58c/0x7d0 [ 110.948196][ T9827] ? netlink_attachskb+0x870/0x870 [ 110.953592][ T9827] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 110.959552][ T9827] ? __check_object_size+0x3d/0x437 [ 110.964748][ T9827] netlink_sendmsg+0x91c/0xea0 [ 110.969513][ T9827] ? netlink_unicast+0x7d0/0x7d0 [ 110.974566][ T9827] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 110.980214][ T9827] ? apparmor_socket_sendmsg+0x2a/0x30 [ 110.985678][ T9827] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 110.992059][ T9827] ? security_socket_sendmsg+0x8d/0xc0 [ 110.997670][ T9827] ? netlink_unicast+0x7d0/0x7d0 [ 111.002774][ T9827] sock_sendmsg+0xd7/0x130 [ 111.007203][ T9827] ____sys_sendmsg+0x753/0x880 [ 111.012023][ T9827] ? kernel_sendmsg+0x50/0x50 [ 111.016795][ T9827] ? __kasan_check_read+0x11/0x20 [ 111.021988][ T9827] ___sys_sendmsg+0x100/0x170 [ 111.027001][ T9827] ? __kasan_check_read+0x11/0x20 [ 111.032281][ T9827] ? sendmsg_copy_msghdr+0x70/0x70 [ 111.037519][ T9827] ? find_held_lock+0x35/0x130 [ 111.042460][ T9827] ? __might_fault+0x12b/0x1e0 [ 111.047230][ T9827] ? lock_downgrade+0x920/0x920 [ 111.052088][ T9827] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 111.058490][ T9827] ? __fget_light+0x1a9/0x230 [ 111.063292][ T9827] ? __fdget+0x1b/0x20 [ 111.067361][ T9827] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 111.074936][ T9827] __sys_sendmsg+0x105/0x1d0 [ 111.079804][ T9827] ? __sys_sendmsg_sock+0xc0/0xc0 [ 111.084942][ T9827] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 111.090628][ T9827] ? do_fast_syscall_32+0xd1/0xe16 [ 111.095826][ T9827] ? entry_SYSENTER_compat+0x70/0x7f [ 111.101257][ T9827] ? do_fast_syscall_32+0xd1/0xe16 [ 111.106523][ T9827] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 111.111999][ T9827] do_fast_syscall_32+0x27b/0xe16 [ 111.117118][ T9827] entry_SYSENTER_compat+0x70/0x7f [ 111.122318][ T9827] RIP: 0023:0xf7fb79a9 [ 111.126497][ T9827] Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 111.146445][ T9827] RSP: 002b:000000000848fb6c EFLAGS: 00000216 ORIG_RAX: 0000000000000172 [ 111.155078][ T9827] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000d00 [ 111.163213][ T9827] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 111.171310][ T9827] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 111.179678][ T9827] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 111.187647][ T9827] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 111.196007][ T9827] Modules linked in: [ 111.199972][ T9827] ---[ end trace a669d7f2d5a4761a ]--- [ 111.205583][ T9827] RIP: 0010:strlen+0x1f/0xa0 [ 111.210382][ T9827] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 111.230537][ T9827] RSP: 0018:ffffc900020e6e80 EFLAGS: 00010282 [ 111.237006][ T9827] RAX: dffffc0000000000 RBX: ffff888095c4d718 RCX: 1ffffffff14f6d0e [ 111.245724][ T9827] RDX: 0000000000000022 RSI: ffffffff8673a421 RDI: 0000000000000114 [ 111.254646][ T9827] RBP: ffffc900020e6e98 R08: ffff8880a7f080c0 R09: ffffed1012b89ae3 [ 111.263088][ T9827] R10: ffffed1012b89ae2 R11: ffff888095c4d717 R12: 0000000000000114 [ 111.271064][ T9827] R13: 0000000000000104 R14: ffff8880a0526a00 R15: ffff888095c4d700 [ 111.279390][ T9827] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000009408900 [ 111.288900][ T9827] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 111.296716][ T9827] CR2: 0000000020000300 CR3: 00000000a2fcf000 CR4: 00000000001406e0 [ 111.305058][ T9827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 111.313313][ T9827] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 111.321514][ T9827] Kernel panic - not syncing: Fatal exception in interrupt [ 111.330601][ T9827] Kernel Offset: disabled [ 111.334951][ T9827] Rebooting in 86400 seconds..