[ 39.620065][ T26] audit: type=1800 audit(1570935198.939:27): pid=7722 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 39.642232][ T26] audit: type=1800 audit(1570935198.939:28): pid=7722 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 40.307104][ T26] audit: type=1800 audit(1570935199.689:29): pid=7722 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 40.326332][ T26] audit: type=1800 audit(1570935199.689:30): pid=7722 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.1.16' (ECDSA) to the list of known hosts. syzkaller login: [ 51.186707][ T7876] IPVS: ftp: loaded support on port[0] = 21 [ 51.245145][ T7876] chnl_net:caif_netlink_parms(): no params data found [ 51.276398][ T7876] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.285020][ T7876] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.293042][ T7876] device bridge_slave_0 entered promiscuous mode [ 51.301483][ T7876] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.309495][ T7876] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.317276][ T7876] device bridge_slave_1 entered promiscuous mode [ 51.335036][ T7876] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.346238][ T7876] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.366185][ T7876] team0: Port device team_slave_0 added [ 51.374787][ T7876] team0: Port device team_slave_1 added [ 51.451027][ T7876] device hsr_slave_0 entered promiscuous mode [ 51.519061][ T7876] device hsr_slave_1 entered promiscuous mode [ 51.617318][ T7876] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.624825][ T7876] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.633183][ T7876] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.640309][ T7876] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.677703][ T7876] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.691899][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.702226][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.712162][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.720767][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.733147][ T7876] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.743507][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.752278][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.759415][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.779421][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.788010][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.795169][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.803723][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.812208][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.821301][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 51.829796][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.838658][ T7878] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.847590][ T7876] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.865030][ T7876] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.897469][ T7876] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 51.905294][ T7876] #PF: supervisor instruction fetch in kernel mode [ 51.911861][ T7876] #PF: error_code(0x0010) - not-present page [ 51.917864][ T7876] PGD 94400067 P4D 94400067 PUD a9781067 PMD 0 [ 51.924088][ T7876] Oops: 0010 [#1] PREEMPT SMP KASAN [ 51.929310][ T7876] CPU: 1 PID: 7876 Comm: syz-executor423 Not tainted 5.4.0-rc2+ #0 [ 51.937166][ T7876] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.947202][ T7876] RIP: 0010:0x0 [ 51.950643][ T7876] Code: Bad RIP value. [ 51.954724][ T7876] RSP: 0018:ffff8880950d7958 EFLAGS: 00010246 [ 51.960766][ T7876] RAX: 1ffff11014008c00 RBX: ffff8880a00464a0 RCX: dffffc0000000000 [ 51.968710][ T7876] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff888095d70000 [ 51.978657][ T7876] RBP: ffff8880950d79a0 R08: ffffffff876a0143 R09: ffffed1014008c49 [ 51.986599][ T7876] R10: ffffed1014008c49 R11: 0000000000000000 R12: ffff8880a0046000 [ 51.994541][ T7876] R13: 0000000000000000 R14: 0000000000000002 R15: ffff888095d70000 [ 52.002485][ T7876] FS: 00000000010ad880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 52.011384][ T7876] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.017949][ T7876] CR2: ffffffffffffffd6 CR3: 00000000a0628000 CR4: 00000000001406e0 [ 52.025893][ T7876] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.033845][ T7876] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.042053][ T7876] Call Trace: [ 52.045315][ T7876] xsk_poll+0x17b/0x590 [ 52.049447][ T7876] sock_poll+0x297/0x310 [ 52.053667][ T7876] ? sock_write_iter+0x3a0/0x3a0 [ 52.058580][ T7876] do_sys_poll+0x9f0/0x1240 [ 52.063075][ T7876] ? __rtnl_unlock+0x2c/0xa0 [ 52.067637][ T7876] ? __rtnl_unlock+0x2c/0xa0 [ 52.072212][ T7876] ? poll_initwait+0x160/0x160 [ 52.076948][ T7876] ? __x32_compat_sys_ppoll_time64+0xd0/0xd0 [ 52.082916][ T7876] ? mutex_unlock+0xd/0x10 [ 52.087313][ T7876] ? __rtnl_unlock+0x8d/0xa0 [ 52.093177][ T7876] ? netdev_run_todo+0xd2b/0xd70 [ 52.098093][ T7876] ? __kasan_check_write+0x14/0x20 [ 52.103182][ T7876] ? __mutex_unlock_slowpath+0x13c/0x5b0 [ 52.108790][ T7876] ? rtnl_unlock+0xe/0x10 [ 52.113096][ T7876] ? xsk_bind+0x494/0xd20 [ 52.117395][ T7876] ? check_preemption_disabled+0xb7/0x2a0 [ 52.123083][ T7876] ? security_socket_bind+0xa0/0xd0 [ 52.128252][ T7876] ? set_user_sigmask+0x79/0x170 [ 52.133169][ T7876] __se_sys_ppoll+0x21d/0x290 [ 52.137818][ T7876] ? prepare_exit_to_usermode+0x1f7/0x580 [ 52.143511][ T7876] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 52.149200][ T7876] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 52.154629][ T7876] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 52.160318][ T7876] __x64_sys_ppoll+0xbf/0xd0 [ 52.164890][ T7876] do_syscall_64+0xf7/0x1c0 [ 52.169367][ T7876] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.175238][ T7876] RIP: 0033:0x441bd9 [ 52.179103][ T7876] 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 [ 52.198676][ T7876] RSP: 002b:00007fff1a25c6d8 EFLAGS: 00000246 ORIG_RAX: 000000000000010f [ 52.207054][ T7876] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441bd9 [ 52.214998][ T7876] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000020000040 [ 52.222948][ T7876] RBP: 00007fff1a25c6f0 R08: 0000000000000000 R09: 0000000001bbbbbb [ 52.230900][ T7876] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 52.238960][ T7876] R13: 0000000000403170 R14: 0000000000000000 R15: 0000000000000000 [ 52.246917][ T7876] Modules linked in: [ 52.250795][ T7876] CR2: 0000000000000000 [ 52.256533][ T7876] ---[ end trace f10b6a97f53f81b4 ]--- [ 52.262235][ T7876] RIP: 0010:0x0 [ 52.265830][ T7876] Code: Bad RIP value. [ 52.269975][ T7876] RSP: 0018:ffff8880950d7958 EFLAGS: 00010246 [ 52.276261][ T7876] RAX: 1ffff11014008c00 RBX: ffff8880a00464a0 RCX: dffffc0000000000 [ 52.284275][ T7876] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff888095d70000 [ 52.292293][ T7876] RBP: ffff8880950d79a0 R08: ffffffff876a0143 R09: ffffed1014008c49 [ 52.300306][ T7876] R10: ffffed1014008c49 R11: 0000000000000000 R12: ffff8880a0046000 [ 52.308266][ T7876] R13: 0000000000000000 R14: 0000000000000002 R15: ffff888095d70000 [ 52.316443][ T7876] FS: 00000000010ad880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 52.325457][ T7876] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.332076][ T7876] CR2: ffffffffffffffd6 CR3: 00000000a0628000 CR4: 00000000001406e0 [ 52.340344][ T7876] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.348397][ T7876] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.356409][ T7876] Kernel panic - not syncing: Fatal exception [ 52.363955][ T7876] Kernel Offset: disabled [ 52.368276][ T7876] Rebooting in 86400 seconds..