[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.273351] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 20.089337] random: sshd: uninitialized urandom read (32 bytes read) [ 20.403244] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.227558] random: sshd: uninitialized urandom read (32 bytes read) [ 21.396645] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.49' (ECDSA) to the list of known hosts. [ 26.900549] random: sshd: uninitialized urandom read (32 bytes read) 2018/06/30 07:59:14 parsed 1 programs [ 28.483846] random: cc1: uninitialized urandom read (8 bytes read) 2018/06/30 07:59:16 executed programs: 0 [ 29.705598] IPVS: ftp: loaded support on port[0] = 21 [ 29.894917] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.901383] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.908764] device bridge_slave_0 entered promiscuous mode [ 29.924661] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.931062] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.938216] device bridge_slave_1 entered promiscuous mode [ 29.953254] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 29.969427] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 30.009852] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 30.027423] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 30.089236] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 30.096567] team0: Port device team_slave_0 added [ 30.111859] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 30.119732] team0: Port device team_slave_1 added [ 30.134579] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 30.151958] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 30.169534] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.186258] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.301310] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.309010] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.315938] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.322508] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.722694] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 30.728805] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.771538] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 30.814599] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 30.823636] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 30.861837] 8021q: adding VLAN 0 to HW filter on device team0 [ 31.109916] WARNING: CPU: 0 PID: 4808 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0 [ 31.118361] Kernel panic - not syncing: panic_on_warn set ... [ 31.118361] [ 31.125732] CPU: 0 PID: 4808 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #26 [ 31.132932] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.142321] Call Trace: [ 31.144901] dump_stack+0x1c9/0x2b4 [ 31.148518] ? dump_stack_print_info.cold.2+0x52/0x52 [ 31.153699] panic+0x238/0x4e7 [ 31.156880] ? add_taint.cold.5+0x16/0x16 [ 31.161016] ? __warn.cold.8+0x148/0x1ba [ 31.165072] ? __warn.cold.8+0x117/0x1ba [ 31.169155] ? smc_unhash_sk+0x357/0x4b0 [ 31.173199] __warn.cold.8+0x163/0x1ba [ 31.177074] ? smc_unhash_sk+0x357/0x4b0 [ 31.181136] report_bug+0x252/0x2d0 [ 31.184756] do_error_trap+0x1fc/0x4d0 [ 31.188627] ? math_error+0x3e0/0x3e0 [ 31.192411] ? print_usage_bug+0xc0/0xc0 [ 31.196453] ? lock_acquire+0x1e4/0x540 [ 31.200427] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.205263] do_invalid_op+0x1b/0x20 [ 31.208964] invalid_op+0x14/0x20 [ 31.212403] RIP: 0010:smc_unhash_sk+0x357/0x4b0 [ 31.217048] Code: 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 88 00 00 00 48 81 c4 c0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a9 e7 1b fa <0f> 0b e9 47 ff ff ff 4c 89 ff 48 89 85 28 ff ff ff e8 23 bb 59 fa [ 31.236231] RSP: 0018:ffff8801aaa3f430 EFLAGS: 00010293 [ 31.241585] RAX: ffff8801d2224180 RBX: ffff8801d6f93800 RCX: ffffffff87602406 [ 31.248840] RDX: 0000000000000000 RSI: ffffffff876024c7 RDI: 0000000000000005 [ 31.256094] RBP: ffff8801aaa3f518 R08: ffff8801d2224180 R09: ffffed003adf2710 [ 31.263348] R10: ffffed003adf2710 R11: ffff8801d6f93883 R12: 1ffff10035547e8a [ 31.270603] R13: ffff8801aaa3f4f0 R14: ffffffff89934e60 R15: ffff8801d6f93880 [ 31.277881] ? smc_unhash_sk+0x296/0x4b0 [ 31.281933] ? smc_unhash_sk+0x357/0x4b0 [ 31.285996] ? smc_rx_data_available+0x120/0x120 [ 31.290753] ? release_sock+0x1ec/0x2c0 [ 31.294717] ? __local_bh_enable_ip+0x161/0x230 [ 31.299372] ? __release_sock+0x3a0/0x3a0 [ 31.303631] ? smc_release+0x269/0x610 [ 31.307506] ? trace_hardirqs_on+0xd/0x10 [ 31.311638] ? __local_bh_enable_ip+0x161/0x230 [ 31.316304] smc_release+0x36e/0x610 [ 31.320007] __sock_release+0xd7/0x260 [ 31.323883] ? __sock_release+0x260/0x260 [ 31.328019] sock_close+0x19/0x20 [ 31.331461] __fput+0x355/0x8b0 [ 31.334726] ? fput+0x1a0/0x1a0 [ 31.337987] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.342467] ____fput+0x15/0x20 [ 31.345737] task_work_run+0x1ec/0x2a0 [ 31.349606] ? task_work_cancel+0x250/0x250 [ 31.353914] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 31.359434] ? switch_task_namespaces+0xa2/0xd0 [ 31.364090] do_exit+0x1b08/0x2750 [ 31.367616] ? mm_update_next_owner+0x9a0/0x9a0 [ 31.372283] ? do_futex+0x249/0x27d0 [ 31.375982] ? find_held_lock+0x36/0x1c0 [ 31.380045] ? exit_robust_list+0x290/0x290 [ 31.384351] ? lock_downgrade+0x8f0/0x8f0 [ 31.388484] ? kasan_check_read+0x11/0x20 [ 31.392620] ? do_raw_spin_unlock+0xa7/0x2f0 [ 31.397036] ? __local_bh_enable_ip+0x161/0x230 [ 31.401699] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.406718] ? release_sock+0x1ec/0x2c0 [ 31.410672] ? trace_hardirqs_on+0xd/0x10 [ 31.414804] ? __local_bh_enable_ip+0x161/0x230 [ 31.419456] ? _raw_spin_unlock_bh+0x30/0x40 [ 31.423846] ? release_sock+0x1ec/0x2c0 [ 31.427802] ? __release_sock+0x3a0/0x3a0 [ 31.431948] ? __local_bh_enable_ip+0x161/0x230 [ 31.436612] ? smc_sendmsg+0x2d5/0x370 [ 31.440480] ? smc_sendpage+0x1a0/0x1a0 [ 31.444450] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.449968] ? sock_sendmsg+0x5a/0x120 [ 31.453838] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.459367] ? __sys_sendto+0x475/0x670 [ 31.463328] ? __ia32_sys_getpeername+0xb0/0xb0 [ 31.467979] ? find_held_lock+0x36/0x1c0 [ 31.472051] ? __handle_mm_fault+0x4460/0x4460 [ 31.476713] ? __ia32_compat_sys_futex+0x3e6/0x5f0 [ 31.481626] do_group_exit+0x177/0x440 [ 31.485497] ? __x32_compat_sys_get_robust_list+0x430/0x430 [ 31.491190] ? __ia32_sys_exit+0x50/0x50 [ 31.495234] ? do_fast_syscall_32+0x150/0xfb2 [ 31.499717] __ia32_sys_exit_group+0x3e/0x50 [ 31.504110] do_fast_syscall_32+0x34d/0xfb2 [ 31.508424] ? do_int80_syscall_32+0x890/0x890 [ 31.512987] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.517738] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.523265] ? syscall_return_slowpath+0x31d/0x5e0 [ 31.528190] ? sysret32_from_system_call+0x5/0x46 [ 31.533038] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.537871] entry_SYSENTER_compat+0x70/0x7f [ 31.542260] RIP: 0023:0xf7ff5cb9 [ 31.545601] Code: Bad RIP value. [ 31.548962] RSP: 002b:00000000ffa6bafc EFLAGS: 00000286 ORIG_RAX: 00000000000000fc [ 31.556658] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000000 [ 31.563910] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 31.571168] RBP: 00000000ffa6c9bc R08: 0000000000000000 R09: 0000000000000000 [ 31.578425] R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 [ 31.585676] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.593624] Dumping ftrace buffer: [ 31.597283] (ftrace buffer empty) [ 31.600974] Kernel Offset: disabled [ 31.604592] Rebooting in 86400 seconds..