[ 39.946550] audit: type=1800 audit(1546626362.494:25): pid=7883 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 39.974533] audit: type=1800 audit(1546626362.494:26): pid=7883 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.007850] audit: type=1800 audit(1546626362.504:27): pid=7883 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. [ 40.910342] startpar (7883) used greatest stack depth: 19848 bytes left Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.51' (ECDSA) to the list of known hosts. 2019/01/04 18:26:14 parsed 1 programs 2019/01/04 18:26:16 executed programs: 0 syzkaller login: [ 53.927285] IPVS: ftp: loaded support on port[0] = 21 [ 53.990339] chnl_net:caif_netlink_parms(): no params data found [ 54.024904] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.031701] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.038996] device bridge_slave_0 entered promiscuous mode [ 54.046442] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.052821] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.059999] device bridge_slave_1 entered promiscuous mode [ 54.076474] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 54.085495] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 54.102699] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 54.110362] team0: Port device team_slave_0 added [ 54.115752] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 54.122955] team0: Port device team_slave_1 added [ 54.128303] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 54.135577] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 54.205747] device hsr_slave_0 entered promiscuous mode [ 54.273233] device hsr_slave_1 entered promiscuous mode [ 54.353545] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 54.360397] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 54.374513] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.380909] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.387933] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.394332] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.428428] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 54.434745] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.442434] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.451415] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.470486] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.478126] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.486421] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 54.496899] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 54.502956] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.512096] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.520058] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.526439] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.545304] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.552954] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.559403] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.566958] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.574983] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.584028] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.592700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.604681] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 54.615522] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 54.621530] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.629320] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.640917] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 54.651403] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.790247] kasan: CONFIG_KASAN_INLINE enabled [ 54.795600] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 54.802986] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 54.809220] CPU: 0 PID: 8071 Comm: syz-executor0 Not tainted 4.20.0+ #9 [ 54.815971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.825342] RIP: 0010:__smc_diag_dump.isra.0+0x32a/0x2ba0 [ 54.830879] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 26 25 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d2 [ 54.849773] RSP: 0018:ffff88809d577120 EFLAGS: 00010203 [ 54.855132] RAX: dffffc0000000000 RBX: ffff88808e7df280 RCX: 0000000000000000 [ 54.862387] RDX: 0000000000000001 RSI: ffffffff87b6b452 RDI: 000000000000000e [ 54.869677] RBP: ffff88809d5773e8 R08: ffff8880979f8340 R09: ffff8880906f0ed0 [ 54.876946] R10: fffffbfff14a1128 R11: ffffffff8a508943 R12: ffff8880a660f5e0 [ 54.884208] R13: ffff8880906f0e80 R14: ffff88808e7df6e0 R15: 0000000000000000 [ 54.891471] FS: 00007f683b4c0700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 54.899684] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.905554] CR2: 0000000000000000 CR3: 000000009ee78000 CR4: 00000000001406f0 [ 54.912811] Call Trace: [ 54.915392] ? __kmalloc_node_track_caller+0x4e/0x70 [ 54.920503] ? __alloc_skb+0x12d/0x730 [ 54.924418] ? smc_diag_handler_dump+0x350/0x350 [ 54.929166] ? sock_sendmsg+0xdd/0x130 [ 54.933047] ? ___sys_sendmsg+0x7ec/0x910 [ 54.937184] ? __sys_sendmsg+0x112/0x270 [ 54.941233] ? __x64_sys_sendmsg+0x78/0xb0 [ 54.945460] ? do_syscall_64+0x1a3/0x800 [ 54.949517] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.954875] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.960404] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.965942] ? check_preemption_disabled+0x48/0x290 [ 54.970953] ? __lock_is_held+0xb6/0x140 [ 54.975020] ? __kmalloc_node_track_caller+0x3d/0x70 [ 54.980140] ? lock_acquire+0x1db/0x570 [ 54.984144] ? smc_diag_dump_proto.isra.0+0xfb/0x3c0 [ 54.989242] ? lock_release+0xc40/0xc40 [ 54.993227] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 54.998783] ? kasan_check_write+0x14/0x20 [ 55.003021] smc_diag_dump_proto.isra.0+0x2e7/0x3c0 [ 55.008041] ? __smc_diag_dump.isra.0+0x2ba0/0x2ba0 [ 55.013054] ? find_held_lock+0x35/0x120 [ 55.017115] smc_diag_dump+0x27/0x80 [ 55.020847] netlink_dump+0x5f2/0x1070 [ 55.024740] ? netlink_broadcast+0x50/0x50 [ 55.029001] __netlink_dump_start+0x5b4/0x7e0 [ 55.033508] smc_diag_handler_dump+0x2a7/0x350 [ 55.038099] ? smc_gid_be16_convert+0x2c0/0x2c0 [ 55.042770] ? lock_downgrade+0x910/0x910 [ 55.046953] ? smc_diag_dump_proto.isra.0+0x3c0/0x3c0 [ 55.052140] ? rcu_read_unlock_special+0x380/0x380 [ 55.057072] sock_diag_rcv_msg+0x322/0x410 [ 55.061304] netlink_rcv_skb+0x17d/0x410 [ 55.065366] ? sock_diag_bind+0x80/0x80 [ 55.069341] ? netlink_ack+0xba0/0xba0 [ 55.073230] sock_diag_rcv+0x2b/0x40 [ 55.076938] netlink_unicast+0x574/0x770 [ 55.081000] ? netlink_attachskb+0x980/0x980 [ 55.085435] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.090965] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 55.095982] netlink_sendmsg+0xa05/0xf90 [ 55.100034] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 55.105568] ? netlink_unicast+0x770/0x770 [ 55.109829] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 55.114673] ? apparmor_socket_sendmsg+0x2a/0x30 [ 55.119424] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.124958] ? security_socket_sendmsg+0x93/0xc0 [ 55.129711] ? netlink_unicast+0x770/0x770 [ 55.134099] sock_sendmsg+0xdd/0x130 [ 55.137830] ___sys_sendmsg+0x7ec/0x910 [ 55.141808] ? copy_msghdr_from_user+0x570/0x570 [ 55.146559] ? iterate_fd+0x4b0/0x4b0 [ 55.150361] ? __might_fault+0x12b/0x1e0 [ 55.154426] ? find_held_lock+0x35/0x120 [ 55.158481] ? __might_fault+0x12b/0x1e0 [ 55.162560] ? __fget_light+0x2db/0x420 [ 55.166548] ? fget_raw+0x20/0x20 [ 55.169992] ? lock_release+0xc40/0xc40 [ 55.173964] ? trace_hardirqs_off_caller+0x300/0x300 [ 55.179065] ? __fdget+0x1b/0x20 [ 55.182422] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 55.187960] ? sockfd_lookup_light+0xc2/0x160 [ 55.192452] __sys_sendmsg+0x112/0x270 [ 55.196335] ? __ia32_sys_shutdown+0x80/0x80 [ 55.200759] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.206130] ? trace_hardirqs_off_caller+0x300/0x300 [ 55.211232] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 55.215985] __x64_sys_sendmsg+0x78/0xb0 [ 55.220045] do_syscall_64+0x1a3/0x800 [ 55.223930] ? syscall_return_slowpath+0x5f0/0x5f0 [ 55.228856] ? prepare_exit_to_usermode+0x232/0x3b0 [ 55.233874] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.238714] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.243923] RIP: 0033:0x457ec9 [ 55.247127] Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 55.266513] RSP: 002b:00007f683b4bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 55.274262] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 [ 55.281525] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000008 [ 55.288798] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 55.296065] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f683b4c06d4 [ 55.303326] R13: 00000000004c5188 R14: 00000000004d8a10 R15: 00000000ffffffff [ 55.310606] Modules linked in: [ 55.314613] ---[ end trace 8d386000b0bfe45e ]--- [ 55.319380] RIP: 0010:__smc_diag_dump.isra.0+0x32a/0x2ba0 [ 55.324932] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 26 25 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d2 [ 55.343852] RSP: 0018:ffff88809d577120 EFLAGS: 00010203 [ 55.349220] RAX: dffffc0000000000 RBX: ffff88808e7df280 RCX: 0000000000000000 [ 55.356515] RDX: 0000000000000001 RSI: ffffffff87b6b452 RDI: 000000000000000e [ 55.363812] RBP: ffff88809d5773e8 R08: ffff8880979f8340 R09: ffff8880906f0ed0 [ 55.371083] R10: fffffbfff14a1128 R11: ffffffff8a508943 R12: ffff8880a660f5e0 [ 55.378367] R13: ffff8880906f0e80 R14: ffff88808e7df6e0 R15: 0000000000000000 [ 55.385673] FS: 00007f683b4c0700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 55.393918] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.399801] CR2: 0000000000000000 CR3: 000000009ee78000 CR4: 00000000001406f0 [ 55.407088] Kernel panic - not syncing: Fatal exception [ 55.413442] Kernel Offset: disabled [ 55.417065] Rebooting in 86400 seconds..