[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 83.366398][ T27] audit: type=1800 audit(1579978028.737:25): pid=9460 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 83.386184][ T27] audit: type=1800 audit(1579978028.737:26): pid=9460 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 83.429649][ T27] audit: type=1800 audit(1579978028.737:27): pid=9460 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 '10.128.1.49' (ECDSA) to the list of known hosts. syzkaller login: [ 93.454810][ T9615] IPVS: ftp: loaded support on port[0] = 21 [ 93.502606][ T9615] chnl_net:caif_netlink_parms(): no params data found [ 93.531287][ T9615] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.538922][ T9615] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.546882][ T9615] device bridge_slave_0 entered promiscuous mode [ 93.555290][ T9615] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.562546][ T9615] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.570242][ T9615] device bridge_slave_1 entered promiscuous mode [ 93.587283][ T9615] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 93.598096][ T9615] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 93.618410][ T9615] team0: Port device team_slave_0 added [ 93.625651][ T9615] team0: Port device team_slave_1 added [ 93.640272][ T9615] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 93.647229][ T9615] 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. [ 93.674552][ T9615] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 93.686951][ T9615] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 93.694174][ T9615] 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. [ 93.720354][ T9615] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 93.781792][ T9615] device hsr_slave_0 entered promiscuous mode [ 93.819781][ T9615] device hsr_slave_1 entered promiscuous mode [ 93.953563][ T9615] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 93.992353][ T9615] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 94.041827][ T9615] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 94.081919][ T9615] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 94.140972][ T9615] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.148116][ T9615] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.155906][ T9615] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.163077][ T9615] bridge0: port 1(bridge_slave_0) entered forwarding state [ 94.203842][ T9615] 8021q: adding VLAN 0 to HW filter on device bond0 [ 94.216144][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 94.225862][ T2818] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.233946][ T2818] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.242024][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 94.256015][ T9615] 8021q: adding VLAN 0 to HW filter on device team0 [ 94.266270][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 94.275567][ T2702] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.282669][ T2702] bridge0: port 1(bridge_slave_0) entered forwarding state [ 94.294352][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 94.303084][ T2818] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.310198][ T2818] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.333331][ T2812] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 94.342723][ T2812] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 94.351702][ T2812] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 94.367458][ T9615] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 94.378592][ T9615] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 94.392012][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 94.401172][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 94.409654][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 94.431181][ T9615] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 94.439855][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 94.447238][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 94.471349][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 94.488453][ T9615] device veth0_vlan entered promiscuous mode [ 94.495996][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 94.506133][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 94.514480][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 94.527220][ T9615] device veth1_vlan entered promiscuous mode [ 94.547845][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 94.556735][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 94.568260][ T9615] device veth0_macvtap entered promiscuous mode [ 94.577612][ T9615] device veth1_macvtap entered promiscuous mode [ 94.594232][ T9615] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 94.601727][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 94.610676][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 94.618925][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready executing program [ 94.627762][ T2818] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 94.640781][ T9615] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 94.650203][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 94.658665][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 95.623777][ T9615] kasan: CONFIG_KASAN_INLINE enabled [ 95.629242][ T9615] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 95.637367][ T9615] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 95.644302][ T9615] CPU: 1 PID: 9615 Comm: syz-executor512 Not tainted 5.5.0-rc6-syzkaller #0 [ 95.653014][ T9615] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.663105][ T9615] RIP: 0010:strlen+0x1f/0xa0 [ 95.667684][ T9615] 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 [ 95.687276][ T9615] RSP: 0018:ffffc90001d96e90 EFLAGS: 00010286 [ 95.693328][ T9615] RAX: dffffc0000000000 RBX: ffff88808ef50518 RCX: 1ffffffff14f704e [ 95.701285][ T9615] RDX: 0000000000000022 RSI: ffffffff8673dae1 RDI: 0000000000000114 [ 95.709245][ T9615] RBP: ffffc90001d96ea8 R08: ffff8880927842c0 R09: ffffed1011dea0a3 [ 95.717249][ T9615] R10: ffffed1011dea0a2 R11: ffff88808ef50517 R12: 0000000000000114 [ 95.725216][ T9615] R13: 0000000000000104 R14: ffff88809f5c3600 R15: ffff88808ef50500 [ 95.733264][ T9615] FS: 0000000001cea880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 95.742176][ T9615] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.748777][ T9615] CR2: 0000000020001080 CR3: 0000000094e26000 CR4: 00000000001406e0 [ 95.756736][ T9615] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 95.764785][ T9615] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 95.772740][ T9615] Call Trace: [ 95.776140][ T9615] ip_set_comment_free+0x69/0xe0 [ 95.781059][ T9615] hash_net4_add+0x1b9a/0x2200 [ 95.785839][ T9615] hash_net4_uadt+0x596/0x940 [ 95.790508][ T9615] ? hash_net4_head+0x730/0x730 [ 95.795351][ T9615] ? hash_net6_uadt+0x880/0x880 [ 95.800227][ T9615] call_ad+0x1a0/0x5a0 [ 95.804284][ T9615] ? start_msg+0x220/0x220 [ 95.808720][ T9615] ? nla_memcpy+0xb0/0xb0 [ 95.813032][ T9615] ? __nla_parse+0x43/0x60 [ 95.817428][ T9615] ip_set_ad.isra.0+0x572/0xb20 [ 95.822266][ T9615] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 95.827896][ T9615] ? nla_memcpy+0xb0/0xb0 [ 95.832219][ T9615] ? lock_downgrade+0x920/0x920 [ 95.837063][ T9615] ip_set_uadd+0x37/0x50 [ 95.841282][ T9615] ? ip_set_udel+0x50/0x50 [ 95.845680][ T9615] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 95.850603][ T9615] ? nfnetlink_bind+0x2c0/0x2c0 [ 95.855462][ T9615] ? find_held_lock+0x35/0x130 [ 95.860231][ T9615] ? __local_bh_enable_ip+0x15a/0x270 [ 95.865669][ T9615] ? __dev_queue_xmit+0x175c/0x35c0 [ 95.870842][ T9615] ? __local_bh_enable_ip+0x15a/0x270 [ 95.876191][ T9615] ? lockdep_hardirqs_on+0x421/0x5e0 [ 95.881463][ T9615] ? __dev_queue_xmit+0x172e/0x35c0 [ 95.886638][ T9615] ? trace_hardirqs_on+0x67/0x240 [ 95.891637][ T9615] ? __dev_queue_xmit+0x172e/0x35c0 [ 95.896812][ T9615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.903036][ T9615] ? apparmor_capable+0x497/0x900 [ 95.908064][ T9615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.914287][ T9615] ? __kasan_check_read+0x11/0x20 [ 95.919307][ T9615] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 95.924757][ T9615] netlink_rcv_skb+0x177/0x450 [ 95.929504][ T9615] ? nfnetlink_bind+0x2c0/0x2c0 [ 95.934344][ T9615] ? netlink_ack+0xb50/0xb50 [ 95.938909][ T9615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.945126][ T9615] ? ns_capable_common+0x93/0x100 [ 95.950124][ T9615] ? ns_capable+0x20/0x30 [ 95.954443][ T9615] ? __netlink_ns_capable+0x104/0x140 [ 95.959808][ T9615] nfnetlink_rcv+0x1ba/0x460 [ 95.964386][ T9615] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 95.969834][ T9615] ? netlink_deliver_tap+0x24a/0xbe0 [ 95.975098][ T9615] netlink_unicast+0x58c/0x7d0 [ 95.979881][ T9615] ? netlink_attachskb+0x870/0x870 [ 95.984971][ T9615] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 95.990675][ T9615] ? __check_object_size+0x3d/0x437 [ 95.995877][ T9615] netlink_sendmsg+0x91c/0xea0 [ 96.000690][ T9615] ? netlink_unicast+0x7d0/0x7d0 [ 96.005610][ T9615] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 96.011145][ T9615] ? apparmor_socket_sendmsg+0x2a/0x30 [ 96.016641][ T9615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.022862][ T9615] ? security_socket_sendmsg+0x8d/0xc0 [ 96.028302][ T9615] ? netlink_unicast+0x7d0/0x7d0 [ 96.033219][ T9615] sock_sendmsg+0xd7/0x130 [ 96.037615][ T9615] ____sys_sendmsg+0x753/0x880 [ 96.042399][ T9615] ? kernel_sendmsg+0x50/0x50 [ 96.047055][ T9615] ? lockdep_init_map+0x1be/0x6d0 [ 96.052058][ T9615] ___sys_sendmsg+0x100/0x170 [ 96.056708][ T9615] ? sendmsg_copy_msghdr+0x70/0x70 [ 96.061794][ T9615] ? __kasan_check_read+0x11/0x20 [ 96.066791][ T9615] ? __lock_acquire+0x8a0/0x4a00 [ 96.071705][ T9615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.078075][ T9615] ? __this_cpu_preempt_check+0x35/0x190 [ 96.083689][ T9615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.089907][ T9615] ? percpu_counter_add_batch+0x13c/0x190 [ 96.095605][ T9615] ? __fd_install+0x1bc/0x640 [ 96.100350][ T9615] ? find_held_lock+0x35/0x130 [ 96.105135][ T9615] ? __fd_install+0x1bc/0x640 [ 96.109792][ T9615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.116005][ T9615] ? __fget_light+0x1a9/0x230 [ 96.120668][ T9615] ? __fdget+0x1b/0x20 [ 96.124710][ T9615] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 96.130937][ T9615] __sys_sendmsg+0x105/0x1d0 [ 96.135500][ T9615] ? __sys_sendmsg_sock+0xc0/0xc0 [ 96.140518][ T9615] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 96.145969][ T9615] ? do_syscall_64+0x26/0x790 [ 96.150628][ T9615] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 96.156680][ T9615] ? do_syscall_64+0x26/0x790 [ 96.161332][ T9615] __x64_sys_sendmsg+0x78/0xb0 [ 96.166072][ T9615] do_syscall_64+0xfa/0x790 [ 96.170550][ T9615] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 96.176415][ T9615] RIP: 0033:0x442699 [ 96.180294][ T9615] 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 1b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 96.199981][ T9615] RSP: 002b:00007ffe9759b248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 96.208380][ T9615] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442699 [ 96.216591][ T9615] RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004 [ 96.224665][ T9615] RBP: 00007ffe9759b260 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 96.232625][ T9615] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 96.240615][ T9615] R13: 0000000000403bd0 R14: 0000000000000000 R15: 0000000000000000 [ 96.248573][ T9615] Modules linked in: [ 96.252500][ T9615] ---[ end trace c6aa4eb35bb0c513 ]--- [ 96.257956][ T9615] RIP: 0010:strlen+0x1f/0xa0 [ 96.262583][ T9615] 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 [ 96.282222][ T9615] RSP: 0018:ffffc90001d96e90 EFLAGS: 00010286 [ 96.288267][ T9615] RAX: dffffc0000000000 RBX: ffff88808ef50518 RCX: 1ffffffff14f704e [ 96.296305][ T9615] RDX: 0000000000000022 RSI: ffffffff8673dae1 RDI: 0000000000000114 [ 96.304286][ T9615] RBP: ffffc90001d96ea8 R08: ffff8880927842c0 R09: ffffed1011dea0a3 [ 96.312281][ T9615] R10: ffffed1011dea0a2 R11: ffff88808ef50517 R12: 0000000000000114 [ 96.320262][ T9615] R13: 0000000000000104 R14: ffff88809f5c3600 R15: ffff88808ef50500 [ 96.328215][ T9615] FS: 0000000001cea880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 96.337150][ T9615] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 96.343745][ T9615] CR2: 0000000020001080 CR3: 0000000094e26000 CR4: 00000000001406e0 [ 96.351738][ T9615] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 96.359731][ T9615] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 96.367706][ T9615] Kernel panic - not syncing: Fatal exception in interrupt [ 96.376211][ T9615] Kernel Offset: disabled [ 96.380548][ T9615] Rebooting in 86400 seconds..