[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 42.577318] audit: type=1800 audit(1546886487.528:25): pid=7964 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 42.614032] audit: type=1800 audit(1546886487.528:26): pid=7964 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.633678] audit: type=1800 audit(1546886487.528:27): pid=7964 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.10.44' (ECDSA) to the list of known hosts. syzkaller login: [ 184.379617] IPVS: ftp: loaded support on port[0] = 21 [ 184.444040] chnl_net:caif_netlink_parms(): no params data found [ 184.478100] bridge0: port 1(bridge_slave_0) entered blocking state [ 184.484669] bridge0: port 1(bridge_slave_0) entered disabled state [ 184.492047] device bridge_slave_0 entered promiscuous mode [ 184.499318] bridge0: port 2(bridge_slave_1) entered blocking state [ 184.505792] bridge0: port 2(bridge_slave_1) entered disabled state [ 184.512859] device bridge_slave_1 entered promiscuous mode [ 184.529447] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 184.538553] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 184.554270] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 184.562238] team0: Port device team_slave_0 added [ 184.567614] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 184.574790] team0: Port device team_slave_1 added [ 184.580017] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 184.587297] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 184.636641] device hsr_slave_0 entered promiscuous mode [ 184.685191] device hsr_slave_1 entered promiscuous mode [ 184.735648] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 184.742487] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 184.757598] bridge0: port 2(bridge_slave_1) entered blocking state [ 184.763981] bridge0: port 2(bridge_slave_1) entered forwarding state [ 184.770759] bridge0: port 1(bridge_slave_0) entered blocking state [ 184.777126] bridge0: port 1(bridge_slave_0) entered forwarding state [ 184.805660] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 184.811707] 8021q: adding VLAN 0 to HW filter on device bond0 [ 184.820911] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 184.829509] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 184.848659] bridge0: port 1(bridge_slave_0) entered disabled state [ 184.855858] bridge0: port 2(bridge_slave_1) entered disabled state [ 184.862902] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 184.873518] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 184.879765] 8021q: adding VLAN 0 to HW filter on device team0 [ 184.887900] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 184.895627] bridge0: port 1(bridge_slave_0) entered blocking state [ 184.901956] bridge0: port 1(bridge_slave_0) entered forwarding state [ 184.918071] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 184.925693] bridge0: port 2(bridge_slave_1) entered blocking state [ 184.932007] bridge0: port 2(bridge_slave_1) entered forwarding state [ 184.940978] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 184.949163] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 184.962111] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 184.971927] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 184.982207] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 184.988890] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 184.996733] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 185.004280] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 185.011980] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 185.022506] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 185.033271] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 232.626294] BUG: unable to handle kernel NULL pointer dereference at 0000000000000024 [ 232.634299] #PF error: [INSTR] [ 232.634980] kasan: CONFIG_KASAN_INLINE enabled [ 232.637487] PGD a6e07067 P4D a6e07067 PUD 93196067 PMD 0 [ 232.642062] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.647580] Thread overran stack, or stack corrupted [ 232.654946] kasan: CONFIG_KASAN_INLINE enabled [ 232.660048] Oops: 0010 [#1] PREEMPT SMP KASAN [ 232.664618] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.669112] CPU: 0 PID: 0 Comm:  Not tainted 5.0.0-rc1+ #14 [ 232.676447] kasan: CONFIG_KASAN_INLINE enabled [ 232.682225] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 232.686787] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.696132] RIP: 0010:0x24 [ 232.703470] kasan: CONFIG_KASAN_INLINE enabled [ 232.706302] Code: Bad RIP value. [ 232.710855] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.714205] RSP: 0018:ffff8880a9467c40 EFLAGS: 00010082 [ 232.721548] kasan: CONFIG_KASAN_INLINE enabled [ 232.726896] RAX: ffff8880a95a6580 RBX: ffff888096271ac0 RCX: ffff8880a95a7900 [ 232.731459] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.738748] RDX: 1ffff110152b4cb0 RSI: 0000000000000000 RDI: ffff8880a944f684 [ 232.746092] kasan: CONFIG_KASAN_INLINE enabled [ 232.753348] RBP: ffff8880a0ec17b2 R08: ffff8880a95a6580 R09: 0000000000000001 [ 232.757911] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.765169] R10: 0000000000000000 R11: ffff888090e1495f R12: ffff8880a0ec1700 [ 232.772508] kasan: CONFIG_KASAN_INLINE enabled [ 232.779761] R13: d2336ec08941ff00 R14: 0000000000000000 R15: 0000000000000000 [ 232.784331] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.791594] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 232.798935] kasan: CONFIG_KASAN_INLINE enabled [ 232.807164] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 232.811733] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.817605] CR2: fffffffffffffffa CR3: 0000000093292000 CR4: 00000000001406f0 [ 232.824943] kasan: CONFIG_KASAN_INLINE enabled [ 232.832237] Call Trace: [ 232.836805] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.839369] Modules linked in: [ 232.846725] kasan: CONFIG_KASAN_INLINE enabled [ 232.849901] CR2: 0000000000000024 [ 232.854470] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.857902] ---[ end trace 03132d73ddaa3376 ]--- [ 232.865256] kasan: CONFIG_KASAN_INLINE enabled [ 232.870002] RIP: 0010:0x24 [ 232.874558] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.877398] Code: Bad RIP value. [ 232.884730] kasan: CONFIG_KASAN_INLINE enabled [ 232.888082] RSP: 0018:ffff8880a9467c40 EFLAGS: 00010082 [ 232.892643] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.897993] RAX: ffff8880a95a6580 RBX: ffff888096271ac0 RCX: ffff8880a95a7900 [ 232.905345] kasan: CONFIG_KASAN_INLINE enabled [ 232.912599] RDX: 1ffff110152b4cb0 RSI: 0000000000000000 RDI: ffff8880a944f684 [ 232.917156] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.924417] RBP: ffff8880a0ec17b2 R08: ffff8880a95a6580 R09: 0000000000000001 [ 232.931768] kasan: CONFIG_KASAN_INLINE enabled [ 232.939039] R10: 0000000000000000 R11: ffff888090e1495f R12: ffff8880a0ec1700 [ 232.943600] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.950856] R13: d2336ec08941ff00 R14: 0000000000000000 R15: 0000000000000000 [ 232.958190] kasan: CONFIG_KASAN_INLINE enabled [ 232.965458] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 232.970023] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 232.978239] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 232.985594] kasan: CONFIG_KASAN_INLINE enabled [ 232.991462] CR2: fffffffffffffffa CR3: 0000000093292000 CR4: 00000000001406f0 [ 232.996030] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.003292] Kernel panic - not syncing: Fatal exception [ 233.010664] kasan: CONFIG_KASAN_INLINE enabled [ 233.020574] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.027925] kasan: CONFIG_KASAN_INLINE enabled [ 233.032497] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.039846] kasan: CONFIG_KASAN_INLINE enabled [ 233.044416] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.051769] kasan: CONFIG_KASAN_INLINE enabled [ 233.056349] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.063695] kasan: CONFIG_KASAN_INLINE enabled [ 233.068268] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.075620] kasan: CONFIG_KASAN_INLINE enabled [ 233.080184] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.087539] kasan: CONFIG_KASAN_INLINE enabled [ 233.092104] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.099481] kasan: CONFIG_KASAN_INLINE enabled [ 233.104050] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.111407] kasan: CONFIG_KASAN_INLINE enabled [ 233.115979] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.123330] kasan: CONFIG_KASAN_INLINE enabled [ 233.127902] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.135253] kasan: CONFIG_KASAN_INLINE enabled [ 233.139820] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.147172] kasan: CONFIG_KASAN_INLINE enabled [ 233.151737] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.159086] kasan: CONFIG_KASAN_INLINE enabled [ 233.163656] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.171008] kasan: CONFIG_KASAN_INLINE enabled [ 233.175572] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.182920] kasan: CONFIG_KASAN_INLINE enabled [ 233.187496] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.194845] kasan: CONFIG_KASAN_INLINE enabled [ 233.199421] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.206783] kasan: CONFIG_KASAN_INLINE enabled [ 233.211368] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.218728] kasan: CONFIG_KASAN_INLINE enabled [ 233.223294] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 233.230649] kasan: CONFIG_KASAN_INLINE enabled