[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 14.518359] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.880685] random: sshd: uninitialized urandom read (32 bytes read) [ 20.360470] random: sshd: uninitialized urandom read (32 bytes read) [ 21.084732] random: sshd: uninitialized urandom read (32 bytes read) [ 103.210743] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. [ 108.611740] random: sshd: uninitialized urandom read (32 bytes read) 2018/06/01 15:07:55 parsed 1 programs 2018/06/01 15:07:55 executed programs: 0 [ 109.094888] IPVS: Creating netns size=2536 id=1 [ 109.119177] IPVS: Creating netns size=2536 id=2 [ 109.154213] IPVS: Creating netns size=2536 id=3 [ 109.191097] IPVS: Creating netns size=2536 id=4 [ 109.192352] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.196262] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.244915] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 109.252275] IPVS: Creating netns size=2536 id=5 [ 109.256354] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 109.282704] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.300480] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.308425] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 109.322951] IPVS: Creating netns size=2536 id=6 [ 109.331100] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 109.353802] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 109.367848] IPVS: Creating netns size=2536 id=7 [ 109.382886] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 109.410110] IPVS: Creating netns size=2536 id=8 [ 109.414119] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 109.425058] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 109.440389] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.459682] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.516574] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.532783] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.550037] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 109.569295] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 109.599729] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 109.611794] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 109.629109] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 109.639845] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 109.653141] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.660511] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.678912] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 109.695349] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.706929] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 109.714242] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.759112] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 109.775698] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.790660] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 109.799327] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.814769] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 109.830168] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 109.838864] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.846958] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 109.856121] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 109.867140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 109.875289] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 109.886112] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 109.895793] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.903798] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 109.923295] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 109.947969] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 109.987987] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 110.013644] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 110.023186] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 110.030679] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 110.040759] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 110.048557] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 110.056338] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 110.074545] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 110.082285] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 110.094264] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 110.106041] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 110.125556] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 110.174860] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 110.203109] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 110.224702] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 110.235282] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 110.243373] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 110.259280] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 110.269600] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 110.277965] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 110.284921] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 110.293797] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 110.308693] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 110.318846] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 110.326788] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 110.343362] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 110.350254] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 110.359896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 111.067618] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 111.215291] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 111.227123] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 111.234850] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 111.452271] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 111.550580] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 111.592468] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 111.598788] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 111.608073] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 111.626238] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 111.668173] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 111.680913] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 111.689463] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 111.772883] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 111.782822] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 111.789599] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 111.839829] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 111.867380] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 111.984765] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 111.991088] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 111.999725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 112.007592] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 112.024415] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 112.032130] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 112.039137] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 112.081358] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 112.165334] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 112.173296] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 112.180059] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 112.241898] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 112.259045] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 112.273617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/06/01 15:08:00 executed programs: 216 INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes 2018/06/01 15:08:05 executed programs: 1016 2018/06/01 15:08:10 executed programs: 1818 2018/06/01 15:08:15 executed programs: 2622 2018/06/01 15:08:20 executed programs: 3416 2018/06/01 15:08:25 executed programs: 4210 2018/06/01 15:08:30 executed programs: 5023 2018/06/01 15:08:35 executed programs: 5820 2018/06/01 15:08:40 executed programs: 6624 2018/06/01 15:08:45 executed programs: 7442 [ 159.550009] ------------[ cut here ]------------ [ 159.555016] WARNING: CPU: 1 PID: 25304 at ./arch/x86/include/asm/fpu/internal.h:534 fpu__restore+0x6aa/0x8b0 [ 159.565004] Kernel panic - not syncing: panic_on_warn set ... [ 159.565004] [ 159.572362] CPU: 1 PID: 25304 Comm: syz-executor4 Not tainted 4.9.105-gd7e64f8 #43 [ 159.580206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 159.589550] ffff8801d978faa8 ffffffff81eb41a9 ffffffff83c48b40 00000000ffffffff [ 159.597632] 0000000000000000 0000000000000001 0000000000000216 ffff8801d978fb68 [ 159.605675] ffffffff81421e15 0000000041b58ab3 ffffffff843b9990 ffffffff81421c56 [ 159.613716] Call Trace: [ 159.616297] [] dump_stack+0xc1/0x128 [ 159.621659] [] panic+0x1bf/0x3bc [ 159.626669] [] ? add_taint.cold.6+0x16/0x16 [ 159.632639] [] ? __warn.cold.9+0xa6/0x17f [ 159.638453] [] ? fpu__restore+0x6aa/0x8b0 [ 159.644246] [] __warn.cold.9+0xc1/0x17f [ 159.649867] [] warn_slowpath_null+0x2c/0x40 [ 159.655833] [] fpu__restore+0x6aa/0x8b0 [ 159.661454] [] ? kernel_fpu_end+0x40/0x40 [ 159.667246] [] ? __fpu__restore_sig+0x4d3/0x1290 [ 159.673696] [] __fpu__restore_sig+0x4ee/0x1290 [ 159.680013] [] ? save_fsave_header+0x180/0x180 [ 159.686243] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 159.693089] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 159.699683] [] ? fixup_exception+0x9a/0xd0 [ 159.705567] [] ? retint_kernel+0x2d/0x2d [ 159.711276] [] fpu__restore_sig+0x87/0xe0 [ 159.717072] [] ia32_restore_sigcontext+0x3cd/0x490 [ 159.723651] [] sys32_rt_sigreturn+0x1d5/0x290 [ 159.729805] [] ? sys32_sigreturn+0x2a0/0x2a0 [ 159.735869] [] ? do_fast_syscall_32+0xcf/0x870 [ 159.742276] [] ? sys32_sigreturn+0x2a0/0x2a0 [ 159.748333] [] do_fast_syscall_32+0x2f7/0x870 [ 159.754478] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 159.761154] [] entry_SYSENTER_compat+0x90/0xa2 [ 159.768033] Dumping ftrace buffer: [ 159.771630] (ftrace buffer empty) [ 159.775332] Kernel Offset: disabled [ 159.778944] Rebooting in 86400 seconds..