[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.644028][ T26] audit: type=1800 audit(1569827167.004:25): pid=8566 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.682309][ T26] audit: type=1800 audit(1569827167.004:26): pid=8566 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.737022][ T26] audit: type=1800 audit(1569827167.014:27): pid=8566 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 '10.128.0.15' (ECDSA) to the list of known hosts. syzkaller login: [ 62.709394][ T8719] IPVS: ftp: loaded support on port[0] = 21 [ 62.766531][ T8719] chnl_net:caif_netlink_parms(): no params data found [ 62.794348][ T8719] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.802247][ T8719] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.810002][ T8719] device bridge_slave_0 entered promiscuous mode [ 62.818540][ T8719] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.825715][ T8719] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.833481][ T8719] device bridge_slave_1 entered promiscuous mode [ 62.850512][ T8719] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.861331][ T8719] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.880095][ T8719] team0: Port device team_slave_0 added [ 62.887363][ T8719] team0: Port device team_slave_1 added [ 62.953946][ T8719] device hsr_slave_0 entered promiscuous mode [ 63.022662][ T8719] device hsr_slave_1 entered promiscuous mode [ 63.099199][ T8719] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.106417][ T8719] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.114161][ T8719] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.121226][ T8719] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.154991][ T8719] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.165918][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.175936][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.183994][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.191681][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 63.203491][ T8719] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.216355][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.224723][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.231746][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.239369][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.247918][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.254993][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.273960][ T8723] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.283617][ T8723] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.292608][ T8723] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.301349][ T8723] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.313852][ T8719] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 63.325610][ T8719] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.333631][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 63.352387][ T8719] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.386343][ T8719] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 63.394170][ T8719] #PF: supervisor instruction fetch in kernel mode [ 63.400652][ T8719] #PF: error_code(0x0010) - not-present page [ 63.406601][ T8719] PGD 99226067 P4D 99226067 PUD 8fa47067 PMD 0 [ 63.412821][ T8719] Oops: 0010 [#1] PREEMPT SMP KASAN [ 63.417992][ T8719] CPU: 0 PID: 8719 Comm: syz-executor502 Not tainted 5.3.0+ #0 [ 63.425503][ T8719] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.435538][ T8719] RIP: 0010:0x0 [ 63.438978][ T8719] Code: Bad RIP value. [ 63.443018][ T8719] RSP: 0018:ffff88809dd4f848 EFLAGS: 00010246 [ 63.449055][ T8719] RAX: 0000000000000000 RBX: ffff88808c06d740 RCX: 1ffff1101180db7c [ 63.456999][ T8719] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88809a190b00 [ 63.464947][ T8719] RBP: ffff88809dd4f880 R08: ffff8880921924c0 R09: ffffed101180db31 [ 63.472891][ T8719] R10: ffffed101180db30 R11: ffff88808c06d987 R12: 0000000000000002 [ 63.480860][ T8719] R13: 0000000000000304 R14: ffff88809a190b00 R15: 0000000000000000 [ 63.488809][ T8719] FS: 0000000001b27880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 63.497720][ T8719] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.504274][ T8719] CR2: ffffffffffffffd6 CR3: 00000000a307a000 CR4: 00000000001406f0 [ 63.512220][ T8719] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.520180][ T8719] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.528123][ T8719] Call Trace: [ 63.531391][ T8719] xsk_poll+0x1e7/0x5a0 [ 63.535535][ T8719] ? xsk_setsockopt+0x730/0x730 [ 63.540377][ T8719] sock_poll+0x15e/0x480 [ 63.544595][ T8719] ? do_recvmmsg+0x7a0/0x7a0 [ 63.549156][ T8719] do_sys_poll+0x63c/0xdd0 [ 63.553552][ T8719] ? arch_stack_walk+0x97/0xf0 [ 63.558294][ T8719] ? compat_core_sys_select+0x770/0x770 [ 63.563812][ T8719] ? __rtnl_unlock+0x36/0x90 [ 63.568379][ T8719] ? find_held_lock+0x35/0x130 [ 63.573121][ T8719] ? lock_downgrade+0x920/0x920 [ 63.578822][ T8719] ? __kasan_check_write+0x14/0x20 [ 63.583915][ T8719] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 63.589431][ T8719] ? find_held_lock+0x35/0x130 [ 63.594170][ T8719] ? poll_initwait+0x180/0x180 [ 63.598908][ T8719] ? poll_freewait+0x260/0x260 [ 63.603672][ T8719] ? mutex_unlock+0xd/0x10 [ 63.608074][ T8719] ? __rtnl_unlock+0x7c/0x90 [ 63.612640][ T8719] ? netdev_run_todo+0x559/0x7d0 [ 63.617555][ T8719] ? __kasan_check_write+0x14/0x20 [ 63.622639][ T8719] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 63.628159][ T8719] ? register_netdev+0x50/0x50 [ 63.632894][ T8719] ? wait_for_completion+0x440/0x440 [ 63.638160][ T8719] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 63.643938][ T8719] ? xdp_add_sk_umem+0x134/0x1c0 [ 63.648849][ T8719] ? rtnl_unlock+0xe/0x10 [ 63.653152][ T8719] ? xsk_bind+0x1e7/0x1190 [ 63.657547][ T8719] ? xsk_clear_rx_need_wakeup+0x100/0x100 [ 63.663247][ T8719] ? apparmor_socket_bind+0xb6/0x160 [ 63.668507][ T8719] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 63.674720][ T8719] ? security_socket_bind+0x8d/0xc0 [ 63.679910][ T8719] ? set_user_sigmask+0x166/0x1e0 [ 63.684908][ T8719] ? sigprocmask+0x2b0/0x2b0 [ 63.689473][ T8719] ? __ia32_sys_socketpair+0xf0/0xf0 [ 63.694735][ T8719] __x64_sys_ppoll+0x259/0x310 [ 63.699483][ T8719] ? __sys_socket+0x180/0x220 [ 63.704134][ T8719] ? __ia32_sys_poll+0x470/0x470 [ 63.709047][ T8719] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 63.714479][ T8719] ? do_syscall_64+0x26/0x760 [ 63.719141][ T8719] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 63.725181][ T8719] ? do_syscall_64+0x26/0x760 [ 63.729833][ T8719] ? lockdep_hardirqs_on+0x421/0x5e0 [ 63.735093][ T8719] ? trace_hardirqs_on+0x67/0x240 [ 63.740095][ T8719] do_syscall_64+0xfa/0x760 [ 63.744575][ T8719] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 63.750438][ T8719] RIP: 0033:0x441bd9 [ 63.754307][ T8719] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 7b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 63.773977][ T8719] RSP: 002b:00007ffd48824e98 EFLAGS: 00000246 ORIG_RAX: 000000000000010f [ 63.782368][ T8719] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441bd9 [ 63.790332][ T8719] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000020000040 [ 63.798286][ T8719] RBP: 00007ffd48824eb0 R08: 0000000000000000 R09: 0000000001bbbbbb [ 63.806254][ T8719] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 63.814211][ T8719] R13: 0000000000403170 R14: 0000000000000000 R15: 0000000000000000 [ 63.822693][ T8719] Modules linked in: [ 63.826565][ T8719] CR2: 0000000000000000 [ 63.832633][ T8719] ---[ end trace e262cafe88422aec ]--- [ 63.839468][ T8719] RIP: 0010:0x0 [ 63.843096][ T8719] Code: Bad RIP value. [ 63.847161][ T8719] RSP: 0018:ffff88809dd4f848 EFLAGS: 00010246 [ 63.853380][ T8719] RAX: 0000000000000000 RBX: ffff88808c06d740 RCX: 1ffff1101180db7c [ 63.861349][ T8719] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88809a190b00 [ 63.869831][ T8719] RBP: ffff88809dd4f880 R08: ffff8880921924c0 R09: ffffed101180db31 [ 63.878096][ T8719] R10: ffffed101180db30 R11: ffff88808c06d987 R12: 0000000000000002 [ 63.886353][ T8719] R13: 0000000000000304 R14: ffff88809a190b00 R15: 0000000000000000 [ 63.894332][ T8719] FS: 0000000001b27880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 63.903276][ T8719] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.909853][ T8719] CR2: ffffffffffffffd6 CR3: 00000000a307a000 CR4: 00000000001406f0 [ 63.917999][ T8719] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.926017][ T8719] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.934176][ T8719] Kernel panic - not syncing: Fatal exception [ 63.941671][ T8719] Kernel Offset: disabled [ 63.945991][ T8719] Rebooting in 86400 seconds..