[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.134362] random: sshd: uninitialized urandom read (32 bytes read) [ 37.355119] kauditd_printk_skb: 9 callbacks suppressed [ 37.355127] audit: type=1400 audit(1568418016.989:35): avc: denied { map } for pid=6839 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 37.410764] random: sshd: uninitialized urandom read (32 bytes read) [ 37.941551] random: sshd: uninitialized urandom read (32 bytes read) [ 60.803755] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts. [ 66.373660] random: sshd: uninitialized urandom read (32 bytes read) [ 66.499529] audit: type=1400 audit(1568418046.129:36): avc: denied { map } for pid=6851 comm="syz-executor019" path="/root/syz-executor019932738" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 66.750930] IPVS: ftp: loaded support on port[0] = 21 [ 67.598090] chnl_net:caif_netlink_parms(): no params data found [ 67.627104] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.634130] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.641411] device bridge_slave_0 entered promiscuous mode [ 67.648206] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.654962] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.661960] device bridge_slave_1 entered promiscuous mode [ 67.675867] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 67.684899] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 67.699630] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 67.706997] team0: Port device team_slave_0 added [ 67.712644] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 67.719909] team0: Port device team_slave_1 added [ 67.725257] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 67.732494] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 67.782204] device hsr_slave_0 entered promiscuous mode [ 67.820807] device hsr_slave_1 entered promiscuous mode [ 67.860833] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 67.867973] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 67.880891] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.887307] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.894275] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.900667] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.927283] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 67.934200] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.942634] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 67.950745] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.969052] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.976201] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.985811] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 67.992172] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.000123] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.008067] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.014449] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.032206] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.039797] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.046189] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.053467] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.062218] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.069641] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program executing program [ 68.077899] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.086430] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.096392] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 68.102562] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.116482] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 68.125994] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 68.591850] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 73.210070] invalid inflight: 1 state 4 cwnd 10 mss 1448 [ 73.215845] ------------[ cut here ]------------ [ 73.220924] WARNING: CPU: 1 PID: 9694 at net/ipv4/tcp_output.c:2507 tcp_send_loss_probe.cold+0x83/0xa2 [ 73.230361] Kernel panic - not syncing: panic_on_warn set ... [ 73.230361] [ 73.237882] CPU: 1 PID: 9694 Comm: syz-executor019 Not tainted 4.14.143 #0 [ 73.245000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.254450] Call Trace: [ 73.257020] [ 73.259276] dump_stack+0x138/0x197 [ 73.262911] panic+0x1f2/0x426 [ 73.266096] ? add_taint.cold+0x16/0x16 [ 73.270064] ? tcp_send_loss_probe.cold+0x83/0xa2 [ 73.274909] ? tcp_send_loss_probe.cold+0x83/0xa2 [ 73.279762] __warn.cold+0x2f/0x36 [ 73.283299] ? ist_end_non_atomic+0x10/0x10 [ 73.287630] ? tcp_send_loss_probe.cold+0x83/0xa2 [ 73.292630] report_bug+0x216/0x254 [ 73.296290] do_error_trap+0x1bb/0x310 [ 73.300173] ? math_error+0x360/0x360 [ 73.303962] ? vprintk_emit+0x171/0x600 [ 73.307921] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 73.312753] do_invalid_op+0x1b/0x20 [ 73.316477] invalid_op+0x1b/0x40 [ 73.319935] RIP: 0010:tcp_send_loss_probe.cold+0x83/0xa2 [ 73.325383] RSP: 0000:ffff8880aef07cb8 EFLAGS: 00010282 [ 73.330729] RAX: 000000000000002c RBX: 0000000000000000 RCX: 0000000000000000 [ 73.337987] RDX: 0000000000000100 RSI: ffffffff866d10e0 RDI: ffffed1015de0f8d [ 73.345259] RBP: ffff8880aef07ce8 R08: 000000000000002c R09: ffff88809a7b0930 [ 73.352528] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888084c96a80 [ 73.359800] R13: 0000000000000001 R14: 00000000000005a8 R15: 000000000000000a [ 73.367099] ? tcp_send_loss_probe.cold+0x83/0xa2 [ 73.371976] tcp_write_timer_handler+0x4a8/0x7e0 [ 73.376834] tcp_write_timer+0xd8/0x180 [ 73.380803] call_timer_fn+0x161/0x670 [ 73.384687] ? tcp_write_timer_handler+0x7e0/0x7e0 [ 73.389607] ? __next_timer_interrupt+0x140/0x140 [ 73.394434] ? trace_hardirqs_on_caller+0x19b/0x590 [ 73.399437] run_timer_softirq+0x5b4/0x1570 [ 73.403921] ? tcp_write_timer_handler+0x7e0/0x7e0 [ 73.408925] ? add_timer+0xae0/0xae0 [ 73.412623] ? __lock_is_held+0xb6/0x140 [ 73.416677] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 73.422128] __do_softirq+0x244/0x9a0 [ 73.426033] ? sched_clock+0x2e/0x50 [ 73.429760] irq_exit+0x160/0x1b0 [ 73.433208] smp_apic_timer_interrupt+0x146/0x5e0 [ 73.438044] apic_timer_interrupt+0x96/0xa0 [ 73.442349] [ 73.444574] RIP: 0010:clear_page_erms+0x9/0x10 [ 73.449162] RSP: 0000:ffff888083e57a90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 [ 73.456857] RAX: 0000000000000000 RBX: ffffea000246f080 RCX: 0000000000000000 [ 73.464126] RDX: 1ffff110134f623d RSI: 0000000000000001 RDI: ffff888091bc3000 [ 73.471380] RBP: ffff888083e57b80 R08: ffffea000246f080 R09: ffffed1012378400 [ 73.478640] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809a7b0040 [ 73.485902] R13: ffffea000246f0c0 R14: ffffed10134f626a R15: ffffea000246f080 [ 73.493272] ? get_page_from_freelist+0x12d1/0x2370 [ 73.498289] __alloc_pages_nodemask+0x33f/0x7a0 [ 73.502962] ? finish_mkwrite_fault+0x620/0x620 [ 73.507626] ? __alloc_pages_slowpath+0x2930/0x2930 [ 73.512633] ? __lock_acquire+0x5f7/0x4620 [ 73.516871] ? save_trace+0x290/0x290 [ 73.520675] alloc_pages_current+0xec/0x1e0 [ 73.525076] pte_alloc_one+0x1a/0x100 [ 73.528864] __handle_mm_fault+0x2c19/0x3470 [ 73.533262] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 73.538012] ? find_held_lock+0x35/0x130 [ 73.542083] ? handle_mm_fault+0x1b6/0x7c0 [ 73.546492] handle_mm_fault+0x293/0x7c0 [ 73.550550] __do_page_fault+0x4c1/0xb80 [ 73.554615] ? vmalloc_fault+0xe30/0xe30 [ 73.558671] ? page_fault+0x2f/0x50 [ 73.562299] do_page_fault+0x71/0x511 [ 73.566138] ? page_fault+0x2f/0x50 [ 73.569756] page_fault+0x45/0x50 [ 73.573206] RIP: 0033:0x4460fa [ 73.576439] RSP: 002b:00007ffe70d697e0 EFLAGS: 00010246 [ 73.581784] RAX: 0000000000000000 RBX: 00007ffe70d697e0 RCX: 00000000004460fa [ 73.589037] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 73.596438] RBP: 00007ffe70d69820 R08: 0000000000000001 R09: 00000000007c3880 [ 73.603693] R10: 00000000007c3b50 R11: 0000000000000246 R12: 0000000000000001 [ 73.610950] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 73.619842] Kernel Offset: disabled [ 73.623512] Rebooting in 86400 seconds..