[   32.320900][   T26] audit: type=1800 audit(1550964610.773:30): pid=7200 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 '10.128.0.113' (ECDSA) to the list of known hosts.
syzkaller login: [   42.827946][ T7355] IPVS: ftp: loaded support on port[0] = 21
[   42.878969][ T7355] chnl_net:caif_netlink_parms(): no params data found
[   42.906923][ T7355] bridge0: port 1(bridge_slave_0) entered blocking state
[   42.914303][ T7355] bridge0: port 1(bridge_slave_0) entered disabled state
[   42.922039][ T7355] device bridge_slave_0 entered promiscuous mode
[   42.930504][ T7355] bridge0: port 2(bridge_slave_1) entered blocking state
[   42.937646][ T7355] bridge0: port 2(bridge_slave_1) entered disabled state
[   42.945455][ T7355] device bridge_slave_1 entered promiscuous mode
[   42.959687][ T7355] bond0: Enslaving bond_slave_0 as an active interface with an up link
[   42.969326][ T7355] bond0: Enslaving bond_slave_1 as an active interface with an up link
[   42.985546][ T7355] team0: Port device team_slave_0 added
[   42.991983][ T7355] team0: Port device team_slave_1 added
[   43.065089][ T7355] device hsr_slave_0 entered promiscuous mode
[   43.103374][ T7355] device hsr_slave_1 entered promiscuous mode
[   43.179167][ T7355] bridge0: port 2(bridge_slave_1) entered blocking state
[   43.186449][ T7355] bridge0: port 2(bridge_slave_1) entered forwarding state
[   43.194158][ T7355] bridge0: port 1(bridge_slave_0) entered blocking state
[   43.201205][ T7355] bridge0: port 1(bridge_slave_0) entered forwarding state
[   43.228786][ T7355] 8021q: adding VLAN 0 to HW filter on device bond0
[   43.240375][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   43.260275][   T22] bridge0: port 1(bridge_slave_0) entered disabled state
[   43.269116][   T22] bridge0: port 2(bridge_slave_1) entered disabled state
[   43.278034][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[   43.288686][ T7355] 8021q: adding VLAN 0 to HW filter on device team0
[   43.297686][   T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[   43.306228][   T12] bridge0: port 1(bridge_slave_0) entered blocking state
[   43.313306][   T12] bridge0: port 1(bridge_slave_0) entered forwarding state
[   43.331729][ T7355] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[   43.342870][ T7355] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[   43.356244][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[   43.364821][   T22] bridge0: port 2(bridge_slave_1) entered blocking state
[   43.371852][   T22] bridge0: port 2(bridge_slave_1) entered forwarding state
[   43.379805][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[   43.388579][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[   43.396914][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[   43.405151][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[   43.419072][ T7355] 8021q: adding VLAN 0 to HW filter on device batadv0
executing program
[   43.426864][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[   43.434451][   T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[   43.447470][ T7359] nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based  firewall rule not found. Use the iptables CT target to attach helpers instead.
[   43.843549][    C0] WARNING: CPU: 0 PID: 0 at net/ipv4/tcp_output.c:2534 tcp_send_loss_probe+0x771/0x8a0
[   43.853324][    C0] Kernel panic - not syncing: panic_on_warn set ...
[   43.859916][    C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.0.0-rc7-next-20190222 #41
[   43.868222][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   43.878303][    C0] Call Trace:
[   43.881658][    C0]  <IRQ>
[   43.884491][    C0]  dump_stack+0x172/0x1f0
[   43.888822][    C0]  ? tcp_send_loss_probe+0x6c0/0x8a0
[   43.894088][    C0]  panic+0x2cb/0x65c
[   43.897975][    C0]  ? __warn_printk+0xf3/0xf3
[   43.902564][    C0]  ? tcp_send_loss_probe+0x771/0x8a0
[   43.907840][    C0]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   43.914061][    C0]  ? __warn.cold+0x5/0x45
[   43.918376][    C0]  ? __warn+0xe8/0x1d0
[   43.922445][    C0]  ? tcp_send_loss_probe+0x771/0x8a0
[   43.927718][    C0]  __warn.cold+0x20/0x45
[   43.931944][    C0]  ? trace_hardirqs_off+0x62/0x220
[   43.937037][    C0]  ? tcp_send_loss_probe+0x771/0x8a0
[   43.942303][    C0]  report_bug+0x263/0x2b0
[   43.946618][    C0]  do_error_trap+0x11b/0x200
[   43.951187][    C0]  do_invalid_op+0x37/0x50
[   43.955586][    C0]  ? tcp_send_loss_probe+0x771/0x8a0
[   43.960848][    C0]  invalid_op+0x14/0x20
[   43.964982][    C0] RIP: 0010:tcp_send_loss_probe+0x771/0x8a0
[   43.970850][    C0] Code: 88 fc ff ff 4c 89 ef e8 ed 56 c4 fb e9 c8 fc ff ff e8 43 57 c4 fb e9 63 fd ff ff e8 d9 56 c4 fb e9 94 f9 ff ff e8 df 85 8c fb <0f> 0b e9 7d fa ff ff e8 d3 85 8c fb 0f b6 1d d2 10 76 03 31 ff 89
[   43.990444][    C0] RSP: 0018:ffff8880ae807c60 EFLAGS: 00010206
[   43.996490][    C0] RAX: ffffffff8887e040 RBX: 0000000000000000 RCX: ffffffff85e3cadb
[   44.004450][    C0] RDX: 0000000000000100 RSI: ffffffff85e3cfb1 RDI: 0000000000000005
[   44.012403][    C0] RBP: ffff8880ae807c90 R08: ffffffff8887e040 R09: ffffed10133f2089
[   44.020367][    C0] R10: ffffed10133f2088 R11: ffff888099f90443 R12: ffff88808605c040
[   44.028320][    C0] R13: ffff888099f90280 R14: 0000000000008000 R15: ffff88808605c860
[   44.036297][    C0]  ? tcp_send_loss_probe+0x29b/0x8a0
[   44.041573][    C0]  ? tcp_send_loss_probe+0x771/0x8a0
[   44.046851][    C0]  ? __sanitizer_cov_trace_cmp8+0x18/0x20
[   44.052550][    C0]  tcp_write_timer_handler+0x5c0/0x8a0
[   44.057989][    C0]  tcp_write_timer+0x10e/0x1d0
[   44.062734][    C0]  call_timer_fn+0x190/0x720
[   44.067304][    C0]  ? tcp_write_timer_handler+0x8a0/0x8a0
[   44.072918][    C0]  ? process_timeout+0x40/0x40
[   44.077659][    C0]  ? run_timer_softirq+0x647/0x1700
[   44.082840][    C0]  ? trace_hardirqs_on+0x67/0x230
[   44.087854][    C0]  ? kasan_check_read+0x11/0x20
[   44.092691][    C0]  ? tcp_write_timer_handler+0x8a0/0x8a0
[   44.098320][    C0]  run_timer_softirq+0x652/0x1700
[   44.103341][    C0]  ? add_timer+0xbe0/0xbe0
[   44.107736][    C0]  ? kvm_clock_read+0x18/0x30
[   44.112390][    C0]  ? kvm_sched_clock_read+0x9/0x20
[   44.117494][    C0]  ? sched_clock+0x2e/0x50
[   44.121893][    C0]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   44.128119][    C0]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   44.134447][    C0]  __do_softirq+0x266/0x95a
[   44.138938][    C0]  ? sched_clock_cpu+0x1b/0x1b0
[   44.143776][    C0]  irq_exit+0x180/0x1d0
[   44.147923][    C0]  smp_apic_timer_interrupt+0x14a/0x570
[   44.153462][    C0]  apic_timer_interrupt+0xf/0x20
[   44.158384][    C0]  </IRQ>
[   44.161330][    C0] RIP: 0010:native_safe_halt+0x2/0x10
[   44.166793][    C0] Code: ff ff ff 48 89 c7 48 89 45 d8 e8 79 02 9d fa 48 8b 45 d8 e9 ce fe ff ff 48 89 df e8 68 02 9d fa eb 82 90 90 90 90 90 90 fb f4 <c3> 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 f4 c3 90 90 90 90 90 90
[   44.186379][    C0] RSP: 0018:ffffffff88807d08 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[   44.194767][    C0] RAX: 1ffffffff1125119 RBX: ffffffff8887e040 RCX: 0000000000000000
[   44.202713][    C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff8887e8bc
[   44.210671][    C0] RBP: ffffffff88807d38 R08: ffffffff8887e040 R09: 0000000000000000
[   44.218714][    C0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   44.226666][    C0] R13: ffffffff889288b8 R14: 0000000000000000 R15: 0000000000000000
[   44.234636][    C0]  ? default_idle+0x4e/0x330
[   44.239213][    C0]  arch_cpu_idle+0x10/0x20
[   44.243616][    C0]  default_idle_call+0x36/0x90
[   44.248365][    C0]  do_idle+0x386/0x570
[   44.252419][    C0]  ? arch_cpu_idle_exit+0x80/0x80
[   44.257423][    C0]  ? trace_hardirqs_on+0x67/0x230
[   44.262421][    C0]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   44.268637][    C0]  ? debug_smp_processor_id+0x3c/0x280
[   44.274074][    C0]  cpu_startup_entry+0x1b/0x20
[   44.278824][    C0]  rest_init+0x245/0x37b
[   44.283053][    C0]  arch_call_rest_init+0xe/0x1b
[   44.287896][    C0]  start_kernel+0x816/0x84f
[   44.292482][    C0]  ? mem_encrypt_init+0xb/0xb
[   44.297152][    C0]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   44.303375][    C0]  ? x86_family+0x41/0x50
[   44.307683][    C0]  ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[   44.313927][    C0]  x86_64_start_reservations+0x29/0x2b
[   44.319377][    C0]  x86_64_start_kernel+0x77/0x7b
[   44.324293][    C0]  secondary_startup_64+0xa4/0xb0
[   44.330500][    C0] Kernel Offset: disabled
[   44.334915][    C0] Rebooting in 86400 seconds..