[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.061054][ T26] audit: type=1800 audit(1569996166.109:25): pid=8435 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.097804][ T26] audit: type=1800 audit(1569996166.109:26): pid=8435 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.207082][ T26] audit: type=1800 audit(1569996166.249:27): pid=8435 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 '10.128.0.79' (ECDSA) to the list of known hosts. syzkaller login: [ 70.052677][ T8591] IPVS: ftp: loaded support on port[0] = 21 [ 70.108603][ T8591] chnl_net:caif_netlink_parms(): no params data found [ 70.136242][ T8591] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.144309][ T8591] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.152232][ T8591] device bridge_slave_0 entered promiscuous mode [ 70.160727][ T8591] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.167834][ T8591] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.175726][ T8591] device bridge_slave_1 entered promiscuous mode [ 70.192547][ T8591] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.203082][ T8591] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.223543][ T8591] team0: Port device team_slave_0 added [ 70.230676][ T8591] team0: Port device team_slave_1 added [ 70.281493][ T8591] device hsr_slave_0 entered promiscuous mode [ 70.329495][ T8591] device hsr_slave_1 entered promiscuous mode [ 70.407971][ T8591] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.415341][ T8591] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.423977][ T8591] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.431077][ T8591] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.463285][ T8591] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.475272][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.486353][ T3010] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.494899][ T3010] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.502926][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.514643][ T8591] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.525134][ T3150] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.533887][ T3150] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.541082][ T3150] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.561617][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.570677][ T3010] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.577780][ T3010] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.586143][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.595002][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.604362][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.616070][ T3150] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.628279][ T8591] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.640442][ T8591] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.648394][ T3150] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 70.666807][ T8591] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.703753][ T8591] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 70.711718][ T8591] #PF: supervisor instruction fetch in kernel mode [ 70.718193][ T8591] #PF: error_code(0x0010) - not-present page [ 70.724149][ T8591] PGD 902ad067 P4D 902ad067 PUD 9228e067 PMD 0 [ 70.730459][ T8591] Oops: 0010 [#1] PREEMPT SMP KASAN [ 70.735720][ T8591] CPU: 0 PID: 8591 Comm: syz-executor115 Not tainted 5.3.0+ #0 [ 70.743340][ T8591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.753390][ T8591] RIP: 0010:0x0 [ 70.756840][ T8591] Code: Bad RIP value. [ 70.760883][ T8591] RSP: 0018:ffff88808b4b7848 EFLAGS: 00010246 [ 70.766938][ T8591] RAX: 0000000000000000 RBX: ffff888092f81680 RCX: 1ffff110125f0364 [ 70.774889][ T8591] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff888092bc0b00 [ 70.782842][ T8591] RBP: ffff88808b4b7880 R08: ffff8880966e06c0 R09: ffffed10125f0319 [ 70.790804][ T8591] R10: ffffed10125f0318 R11: ffff888092f818c7 R12: 0000000000000002 [ 70.798772][ T8591] R13: 0000000000000304 R14: ffff888092bc0b00 R15: 0000000000000000 [ 70.806728][ T8591] FS: 000000000118b880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 70.815643][ T8591] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.822204][ T8591] CR2: ffffffffffffffd6 CR3: 00000000a8c03000 CR4: 00000000001406f0 [ 70.830168][ T8591] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.838119][ T8591] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.846068][ T8591] Call Trace: [ 70.849340][ T8591] xsk_poll+0x1e7/0x5a0 [ 70.853500][ T8591] ? xsk_setsockopt+0x730/0x730 [ 70.858330][ T8591] sock_poll+0x15e/0x480 [ 70.862552][ T8591] ? do_recvmmsg+0x7a0/0x7a0 [ 70.867121][ T8591] do_sys_poll+0x63c/0xdd0 [ 70.871517][ T8591] ? arch_stack_walk+0x97/0xf0 [ 70.876264][ T8591] ? compat_core_sys_select+0x770/0x770 [ 70.881790][ T8591] ? __rtnl_unlock+0x36/0x90 [ 70.886364][ T8591] ? find_held_lock+0x35/0x130 [ 70.891107][ T8591] ? lock_downgrade+0x920/0x920 [ 70.895938][ T8591] ? __kasan_check_write+0x14/0x20 [ 70.901042][ T8591] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 70.906564][ T8591] ? find_held_lock+0x35/0x130 [ 70.911304][ T8591] ? poll_initwait+0x180/0x180 [ 70.916044][ T8591] ? poll_freewait+0x260/0x260 [ 70.920786][ T8591] ? mutex_unlock+0xd/0x10 [ 70.925194][ T8591] ? __rtnl_unlock+0x7c/0x90 [ 70.929781][ T8591] ? netdev_run_todo+0x559/0x7d0 [ 70.935580][ T8591] ? __kasan_check_write+0x14/0x20 [ 70.940675][ T8591] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 70.946200][ T8591] ? register_netdev+0x50/0x50 [ 70.950945][ T8591] ? wait_for_completion+0x440/0x440 [ 70.956221][ T8591] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 70.962005][ T8591] ? xdp_add_sk_umem+0x134/0x1c0 [ 70.966922][ T8591] ? rtnl_unlock+0xe/0x10 [ 70.971230][ T8591] ? xsk_bind+0x1e7/0x1190 [ 70.975631][ T8591] ? xsk_clear_rx_need_wakeup+0x100/0x100 [ 70.981344][ T8591] ? apparmor_socket_bind+0xb6/0x160 [ 70.986704][ T8591] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.993141][ T8591] ? security_socket_bind+0x8d/0xc0 [ 70.998339][ T8591] ? set_user_sigmask+0x166/0x1e0 [ 71.003348][ T8591] ? sigprocmask+0x2b0/0x2b0 [ 71.007956][ T8591] ? __ia32_sys_socketpair+0xf0/0xf0 [ 71.013237][ T8591] __x64_sys_ppoll+0x259/0x310 [ 71.017986][ T8591] ? __sys_socket+0x180/0x220 [ 71.022645][ T8591] ? __ia32_sys_poll+0x470/0x470 [ 71.027562][ T8591] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 71.033028][ T8591] ? do_syscall_64+0x26/0x760 [ 71.037684][ T8591] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.043732][ T8591] ? do_syscall_64+0x26/0x760 [ 71.048402][ T8591] ? lockdep_hardirqs_on+0x421/0x5e0 [ 71.053702][ T8591] ? trace_hardirqs_on+0x67/0x240 [ 71.058716][ T8591] do_syscall_64+0xfa/0x760 [ 71.063223][ T8591] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.069108][ T8591] RIP: 0033:0x441bd9 [ 71.072981][ T8591] 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 [ 71.092582][ T8591] RSP: 002b:00007fff47324e38 EFLAGS: 00000246 ORIG_RAX: 000000000000010f [ 71.100980][ T8591] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441bd9 [ 71.108939][ T8591] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000020000040 [ 71.116892][ T8591] RBP: 00007fff47324e50 R08: 0000000000000000 R09: 0000000001bbbbbb [ 71.124997][ T8591] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 71.134704][ T8591] R13: 0000000000403170 R14: 0000000000000000 R15: 0000000000000000 [ 71.142676][ T8591] Modules linked in: [ 71.146561][ T8591] CR2: 0000000000000000 [ 71.154372][ T8591] ---[ end trace 0e9b910318733e6c ]--- [ 71.159895][ T8591] RIP: 0010:0x0 [ 71.163384][ T8591] Code: Bad RIP value. [ 71.167460][ T8591] RSP: 0018:ffff88808b4b7848 EFLAGS: 00010246 [ 71.174024][ T8591] RAX: 0000000000000000 RBX: ffff888092f81680 RCX: 1ffff110125f0364 [ 71.182134][ T8591] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff888092bc0b00 [ 71.190147][ T8591] RBP: ffff88808b4b7880 R08: ffff8880966e06c0 R09: ffffed10125f0319 [ 71.198295][ T8591] R10: ffffed10125f0318 R11: ffff888092f818c7 R12: 0000000000000002 [ 71.206916][ T8591] R13: 0000000000000304 R14: ffff888092bc0b00 R15: 0000000000000000 [ 71.214960][ T8591] FS: 000000000118b880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 71.224145][ T8591] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.230758][ T8591] CR2: ffffffffffffffd6 CR3: 00000000a8c03000 CR4: 00000000001406f0 [ 71.238832][ T8591] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.246927][ T8591] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.254928][ T8591] Kernel panic - not syncing: Fatal exception [ 71.262750][ T8591] Kernel Offset: disabled [ 71.267093][ T8591] Rebooting in 86400 seconds..