[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 14.882033] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.591920] random: sshd: uninitialized urandom read (32 bytes read) [ 16.860491] random: sshd: uninitialized urandom read (32 bytes read) [ 17.665856] random: sshd: uninitialized urandom read (32 bytes read) [ 17.800459] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.43' (ECDSA) to the list of known hosts. [ 23.173093] random: sshd: uninitialized urandom read (32 bytes read) 2018/05/21 04:34:55 parsed 1 programs 2018/05/21 04:34:55 executed programs: 0 [ 23.631697] IPVS: Creating netns size=2536 id=1 [ 23.663410] IPVS: Creating netns size=2536 id=2 [ 23.703033] IPVS: Creating netns size=2536 id=3 [ 23.747027] IPVS: Creating netns size=2536 id=4 [ 23.747378] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 23.766806] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 23.798817] IPVS: Creating netns size=2536 id=5 [ 23.853102] IPVS: Creating netns size=2536 id=6 [ 23.874040] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 23.906635] IPVS: Creating netns size=2536 id=7 [ 23.906981] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 23.933124] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 23.974269] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 23.988771] IPVS: Creating netns size=2536 id=8 [ 24.026750] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 24.059332] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 24.081723] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 24.115495] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 24.125534] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 24.151081] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.167935] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 24.181801] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 24.213118] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 24.226530] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 24.235170] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 24.259336] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 24.267005] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 24.295167] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 24.312213] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 24.325464] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 24.334910] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 24.359323] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 24.367699] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 24.396403] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 24.411268] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 24.418546] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 24.434231] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 24.446275] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 24.454507] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 24.466115] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 24.474256] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 24.485163] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 24.497830] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.510839] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 24.519301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 24.527727] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 24.535719] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 24.546675] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 24.557934] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 24.565134] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 24.582191] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 24.592690] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.600364] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.608371] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 24.619973] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 24.631188] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.638666] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 24.650046] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 24.662786] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 24.678065] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 24.688550] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 24.698705] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 24.709826] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.724571] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 24.733213] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.742038] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 24.755360] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 24.772597] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 24.795712] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 24.804021] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 24.813778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.821227] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.831484] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 24.838620] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 24.847336] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.855303] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 24.874179] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 24.884261] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.892244] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 24.907538] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 24.916925] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.925292] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 25.932981] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 26.063592] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 26.070237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.076942] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.166237] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 26.211921] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 26.220735] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 26.291116] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 26.298728] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.306391] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.326516] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 26.335745] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.343581] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.359823] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 26.370287] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 26.382746] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.389459] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.415430] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 26.424669] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 26.460813] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 26.471262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.477984] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.535870] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 26.543470] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.551273] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.562507] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 26.574179] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 26.584464] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.592052] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.694447] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 26.700876] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.707514] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.058535] ------------[ cut here ]------------ [ 27.063343] WARNING: CPU: 0 PID: 5547 at lib/vsprintf.c:1941 set_precision+0x144/0x170 [ 27.071378] precision 58623 too large[ 27.074987] Kernel panic - not syncing: panic_on_warn set ... [ 27.074987] [ 27.082364] CPU: 0 PID: 5547 Comm: syz-executor5 Not tainted 4.9.101-gaef17a5 #32 [ 27.089969] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.099312] ffff8801c00af6e0 ffffffff81eb1009 ffffffff83c484a0 00000000ffffffff [ 27.107346] 0000000000000000 0000000000000000 0000000000000795 ffff8801c00af7a0 [ 27.115373] ffffffff8141f925 0000000041b58ab3 ffffffff843b87e8 ffffffff8141f766 [ 27.123400] Call Trace: [ 27.125975] [] dump_stack+0xc1/0x128 [ 27.131331] [] panic+0x1bf/0x3bc [ 27.136335] [] ? add_taint.cold.6+0x16/0x16 [ 27.142297] [] ? __warn.cold.9+0xa6/0x17f [ 27.148085] [] ? set_precision+0x144/0x170 [ 27.153958] [] __warn.cold.9+0xc1/0x17f [ 27.159575] [] ? unwind_next_frame+0x86/0xe0 [ 27.165619] [] warn_slowpath_fmt+0xc2/0x100 [ 27.171564] [] ? __warn+0x50/0x50 [ 27.176638] [] ? format_decode+0x1b1/0x9e0 [ 27.182491] [] ? set_precision+0x170/0x170 [ 27.188345] [] set_precision+0x144/0x170 [ 27.194024] [] vsnprintf+0x31e/0x1840 [ 27.199448] [] ? pointer+0xb00/0xb00 [ 27.204784] [] vscnprintf+0x2d/0x60 [ 27.210034] [] vprintk_emit+0xf4/0x790 [ 27.215547] [] ? __lock_is_held+0xa2/0xf0 [ 27.221320] [] vprintk+0x28/0x30 [ 27.226310] [] vprintk_default+0x1d/0x30 [ 27.231993] [] printk+0xaf/0xd7 [ 27.236895] [] ? log_wakeup_reason.cold.1+0x13f/0x13f [ 27.243708] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 27.250610] [] ? ___ratelimit+0x53/0x401 [ 27.256291] [] dns_resolver_preparse.cold.3+0x71/0x240 [ 27.263189] [] ? dns_resolver_free_preparse+0x40/0x40 [ 27.270000] [] ? dns_resolver_free_preparse+0x40/0x40 [ 27.276809] [] key_create_or_update+0x35b/0xac0 [ 27.283098] [] ? key_type_lookup+0xd0/0xd0 [ 27.288953] [] ? lookup_user_key+0x10f/0xd10 [ 27.294983] [] ? __check_object_size+0x248/0x38e [ 27.301366] [] SyS_add_key+0x1b4/0x390 [ 27.306876] [] ? key_get_type_from_user.constprop.9+0xe0/0xe0 [ 27.314379] [] ? do_syscall_64+0x48/0x490 [ 27.320147] [] ? key_get_type_from_user.constprop.9+0xe0/0xe0 [ 27.327656] [] do_syscall_64+0x1a6/0x490 [ 27.333340] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.340708] Dumping ftrace buffer: [ 27.344227] (ftrace buffer empty) [ 27.347907] Kernel Offset: disabled [ 27.351503] Rebooting in 86400 seconds..