[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.882552] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.644932] random: sshd: uninitialized urandom read (32 bytes read) [ 22.890223] random: sshd: uninitialized urandom read (32 bytes read) [ 23.617921] random: sshd: uninitialized urandom read (32 bytes read) [ 36.093289] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.7' (ECDSA) to the list of known hosts. [ 41.564882] random: sshd: uninitialized urandom read (32 bytes read) 2018/05/06 20:41:55 parsed 1 programs 2018/05/06 20:41:55 executed programs: 0 [ 42.020944] IPVS: ftp: loaded support on port[0] = 21 [ 42.071320] FAULT_INJECTION: forcing a failure. [ 42.071320] name failslab, interval 1, probability 0, space 0, times 1 [ 42.082676] CPU: 1 PID: 4500 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #35 [ 42.089843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.099172] Call Trace: [ 42.101742] dump_stack+0x1b9/0x294 [ 42.105352] ? dump_stack_print_info.cold.2+0x52/0x52 [ 42.110523] ? print_usage_bug+0xc0/0xc0 [ 42.114568] should_fail.cold.4+0xa/0x1a [ 42.118609] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 42.123695] ? __lock_acquire+0x7f5/0x5140 [ 42.127908] ? graph_lock+0x170/0x170 [ 42.131686] ? graph_lock+0x170/0x170 [ 42.135482] ? debug_check_no_locks_freed+0x310/0x310 [ 42.140654] ? perf_trace_lock_acquire+0xe3/0x980 [ 42.145483] ? lock_downgrade+0x8e0/0x8e0 [ 42.149615] __should_failslab+0x124/0x180 [ 42.153833] should_failslab+0x9/0x14 [ 42.157623] kmem_cache_alloc+0x47/0x760 [ 42.161670] ? perf_trace_lock+0x900/0x900 [ 42.165895] __debug_object_init+0xbc0/0x12c0 [ 42.170379] ? debug_object_free+0x5f0/0x5f0 [ 42.174773] ? print_usage_bug+0xc0/0xc0 [ 42.178820] ? lock_downgrade+0x8e0/0x8e0 [ 42.182959] ? mark_held_locks+0xc9/0x160 [ 42.187088] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 42.191653] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 42.196737] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.201743] debug_object_activate+0x30b/0x670 [ 42.206317] ? debug_object_assert_init+0x500/0x500 [ 42.211316] ? __call_rcu.constprop.68+0x396/0xbb0 [ 42.216227] __call_rcu.constprop.68+0xc0/0xbb0 [ 42.220878] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 42.225873] ? note_gp_changes+0x540/0x540 [ 42.230090] ? smp_call_function_many+0x11b/0xa20 [ 42.234911] ? graph_lock+0x170/0x170 [ 42.238692] ? graph_lock+0x170/0x170 [ 42.242473] ? __lock_is_held+0xb5/0x140 [ 42.246516] kfree_call_rcu+0x15/0x20 [ 42.250298] __free_vmap_area+0x343/0x4d0 [ 42.254424] ? __insert_vmap_area+0x530/0x530 [ 42.258902] __purge_vmap_area_lazy+0x175/0x270 [ 42.263548] vm_unmap_aliases+0x499/0x600 [ 42.267691] ? purge_fragmented_blocks_allcpus+0xbb0/0xbb0 [ 42.273292] ? __get_filter+0x1e0/0x280 [ 42.277243] ? sock_setsockopt+0x1ad3/0x1f40 [ 42.281630] ? __sys_setsockopt+0x2df/0x390 [ 42.285928] ? __x64_sys_setsockopt+0xbe/0x150 [ 42.290487] ? do_syscall_64+0x1b1/0x800 [ 42.294525] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.299866] ? kasan_check_read+0x11/0x20 [ 42.303992] ? do_raw_spin_unlock+0x9e/0x2e0 [ 42.308383] change_page_attr_set_clr+0x80c/0x11a0 [ 42.313296] ? __change_page_attr_set_clr+0x2ce0/0x2ce0 [ 42.318638] ? __lock_is_held+0xb5/0x140 [ 42.322684] ? mark_held_locks+0xc9/0x160 [ 42.326809] ? quarantine_put+0xeb/0x190 [ 42.330852] ? kfree+0x111/0x260 [ 42.334196] ? bpf_convert_filter+0x37fe/0x4400 [ 42.338841] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.343834] ? trace_hardirqs_on+0xd/0x10 [ 42.347961] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.353483] ? do_jit+0x7420/0x7420 [ 42.357090] ? __bpf_prog_run64+0x120/0x120 [ 42.361390] set_memory_ro+0x73/0x90 [ 42.365082] ? _set_memory_wb+0x90/0x90 [ 42.369035] ? __kmalloc_track_caller+0x5f5/0x760 [ 42.373855] ? quarantine_put+0xeb/0x190 [ 42.377898] ? __bpf_prog_run64+0x120/0x120 [ 42.382199] bpf_prog_select_runtime+0x19b/0x640 [ 42.386937] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 42.391931] ? bpf_prog_realloc+0x7a/0x340 [ 42.396144] bpf_prepare_filter+0xb65/0x1060 [ 42.400534] ? bpf_convert_filter+0x4400/0x4400 [ 42.405181] ? memcpy+0x45/0x50 [ 42.408441] ? kmemdup+0x44/0x50 [ 42.411800] ? bpf_prog_store_orig_filter.isra.46+0x147/0x1f0 [ 42.417676] __get_filter+0x1e0/0x280 [ 42.421457] sk_reuseport_attach_filter+0x1d/0x90 [ 42.426279] sock_setsockopt+0x1ad3/0x1f40 [ 42.430495] ? sock_enable_timestamp+0xe0/0xe0 [ 42.435054] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.440570] ? proc_fail_nth_write+0x96/0x1f0 [ 42.445052] ? proc_cwd_link+0x1d0/0x1d0 [ 42.449101] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.454621] ? __fget_light+0x2ef/0x430 [ 42.458574] ? fget_raw+0x20/0x20 [ 42.462008] ? lock_downgrade+0x8e0/0x8e0 [ 42.466136] ? __lock_is_held+0xb5/0x140 [ 42.470185] ? security_socket_setsockopt+0x94/0xc0 [ 42.475183] __sys_setsockopt+0x2df/0x390 [ 42.479315] ? kernel_accept+0x310/0x310 [ 42.483366] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.488882] ? ksys_write+0x1a6/0x250 [ 42.492668] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 42.497495] __x64_sys_setsockopt+0xbe/0x150 [ 42.501881] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.506879] do_syscall_64+0x1b1/0x800 [ 42.510752] ? syscall_return_slowpath+0x5c0/0x5c0 [ 42.515665] ? syscall_return_slowpath+0x30f/0x5c0 [ 42.520577] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 42.525928] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.530755] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.535927] RIP: 0033:0x455979 [ 42.539095] RSP: 002b:00007ffd0a44c648 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 42.546792] RAX: ffffffffffffffda RBX: 00000000014b0914 RCX: 0000000000455979 [ 42.554049] RDX: 0000000000000033 RSI: 0000000000000001 RDI: 0000000000000004 [ 42.561296] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 42.568549] R10: 0000000020000500 R11: 0000000000000246 R12: 0000000000000005 [ 42.575800] R13: 0000000000000578 R14: 00000000006fc3e0 R15: 000000000000000a [ 42.600303] FAULT_INJECTION: forcing a failure. [ 42.600303] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 42.612241] CPU: 0 PID: 4502 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #35 [ 42.619415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.628754] Call Trace: [ 42.631332] dump_stack+0x1b9/0x294 [ 42.634946] ? dump_stack_print_info.cold.2+0x52/0x52 [ 42.640128] should_fail.cold.4+0xa/0x1a [ 42.644192] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 42.649281] ? graph_lock+0x170/0x170 [ 42.653063] ? debug_check_no_locks_freed+0x310/0x310 [ 42.658242] ? find_held_lock+0x36/0x1c0 [ 42.662289] ? __lock_is_held+0xb5/0x140 [ 42.666343] ? check_same_owner+0x320/0x320 [ 42.670654] ? rcu_note_context_switch+0x710/0x710 [ 42.675570] ? __might_sleep+0x95/0x190 [ 42.679529] __alloc_pages_nodemask+0x34e/0xd70 [ 42.684185] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 42.689186] ? find_held_lock+0x36/0x1c0 [ 42.693238] ? lock_downgrade+0x8e0/0x8e0 [ 42.697380] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 42.701948] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 42.707472] alloc_pages_current+0x10c/0x210 [ 42.711868] __change_page_attr_set_clr+0x411/0x2ce0 [ 42.716971] ? _lookup_address_cpa.isra.24+0xa0/0xa0 [ 42.722060] ? graph_lock+0x170/0x170 [ 42.725844] ? lock_downgrade+0x8e0/0x8e0 [ 42.729987] ? find_held_lock+0x36/0x1c0 [ 42.734037] ? lock_downgrade+0x8e0/0x8e0 [ 42.738182] ? kasan_check_read+0x11/0x20 [ 42.742312] ? do_raw_spin_unlock+0x9e/0x2e0 [ 42.746703] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 42.751270] ? lookup_address_in_pgd+0xb1/0x530 [ 42.755925] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 42.760932] ? pfn_range_is_mapped+0xdc/0x110 [ 42.765416] __change_page_attr_set_clr+0x2517/0x2ce0 [ 42.770588] ? note_gp_changes+0x540/0x540 [ 42.774821] ? _lookup_address_cpa.isra.24+0xa0/0xa0 [ 42.779906] ? kasan_check_write+0x14/0x20 [ 42.784125] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 42.789039] ? wait_for_completion+0x870/0x870 [ 42.793603] ? __lock_is_held+0xb5/0x140 [ 42.797650] ? kasan_check_read+0x11/0x20 [ 42.801781] ? do_raw_spin_unlock+0x9e/0x2e0 [ 42.806172] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 42.810750] ? _raw_spin_unlock+0x22/0x30 [ 42.814883] ? mutex_unlock+0xd/0x10 [ 42.818577] ? vm_unmap_aliases+0x4ea/0x600 [ 42.822887] ? purge_fragmented_blocks_allcpus+0xbb0/0xbb0 [ 42.828494] ? __get_filter+0x1e0/0x280 [ 42.832453] ? kasan_check_read+0x11/0x20 [ 42.836581] ? do_raw_spin_unlock+0x9e/0x2e0 [ 42.840981] change_page_attr_set_clr+0x44a/0x11a0 [ 42.845901] ? __change_page_attr_set_clr+0x2ce0/0x2ce0 [ 42.851255] ? __lock_is_held+0xb5/0x140 [ 42.855306] ? mark_held_locks+0xc9/0x160 [ 42.859432] ? quarantine_put+0xeb/0x190 [ 42.863478] ? kfree+0x111/0x260 [ 42.866824] ? bpf_convert_filter+0x37fe/0x4400 [ 42.871474] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.876471] ? trace_hardirqs_on+0xd/0x10 [ 42.880603] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.886132] ? do_jit+0x7420/0x7420 [ 42.889745] ? __bpf_prog_run64+0x120/0x120 [ 42.894050] set_memory_ro+0x73/0x90 [ 42.897749] ? _set_memory_wb+0x90/0x90 [ 42.901706] ? __kmalloc_track_caller+0x5f5/0x760 [ 42.906528] ? quarantine_put+0xeb/0x190 [ 42.910574] ? __bpf_prog_run64+0x120/0x120 [ 42.914881] bpf_prog_select_runtime+0x19b/0x640 [ 42.919620] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 42.924618] ? bpf_prog_realloc+0x7a/0x340 [ 42.928840] bpf_prepare_filter+0xb65/0x1060 [ 42.933235] ? bpf_convert_filter+0x4400/0x4400 [ 42.937889] ? memcpy+0x45/0x50 [ 42.941153] ? kmemdup+0x44/0x50 [ 42.944504] ? bpf_prog_store_orig_filter.isra.46+0x147/0x1f0 [ 42.950370] __get_filter+0x1e0/0x280 [ 42.954157] sk_reuseport_attach_filter+0x1d/0x90 [ 42.958984] sock_setsockopt+0x1ad3/0x1f40 [ 42.963204] ? sock_enable_timestamp+0xe0/0xe0 [ 42.967770] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.973291] ? proc_fail_nth_write+0x96/0x1f0 [ 42.977768] ? proc_cwd_link+0x1d0/0x1d0 [ 42.981823] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.987341] ? __fget_light+0x2ef/0x430 [ 42.991300] ? fget_raw+0x20/0x20 [ 42.994739] ? lock_downgrade+0x8e0/0x8e0 [ 42.998874] ? __lock_is_held+0xb5/0x140 [ 43.002933] ? security_socket_setsockopt+0x94/0xc0 [ 43.007935] __sys_setsockopt+0x2df/0x390 [ 43.012068] ? kernel_accept+0x310/0x310 [ 43.016112] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.021630] ? ksys_write+0x1a6/0x250 [ 43.025422] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 43.030252] __x64_sys_setsockopt+0xbe/0x150 [ 43.034642] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.039641] do_syscall_64+0x1b1/0x800 [ 43.043513] ? syscall_return_slowpath+0x5c0/0x5c0 [ 43.048427] ? syscall_return_slowpath+0x30f/0x5c0 [ 43.053343] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 43.058695] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.063527] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.068696] RIP: 0033:0x455979 [ 43.071867] RSP: 002b:00007ffd0a44c648 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 43.079561] RAX: ffffffffffffffda RBX: 00000000014b0914 RCX: 0000000000455979 [ 43.086813] RDX: 0000000000000033 RSI: 0000000000000001 RDI: 0000000000000004 [ 43.094065] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 43.101315] R10: 0000000020000500 R11: 0000000000000246 R12: 0000000000000005 [ 43.108565] R13: 0000000000000578 R14: 00000000006fc3e0 R15: 000000000000000a [ 43.116046] WARNING: CPU: 0 PID: 4502 at include/linux/filter.h:651 bpf_prog_select_runtime+0x53c/0x640 [ 43.125567] Kernel panic - not syncing: panic_on_warn set ... [ 43.125567] [ 43.132919] CPU: 0 PID: 4502 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #35 [ 43.140087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.149423] Call Trace: [ 43.152000] dump_stack+0x1b9/0x294 [ 43.155618] ? dump_stack_print_info.cold.2+0x52/0x52 [ 43.160801] ? bpf_prog_select_runtime+0x440/0x640 [ 43.165722] panic+0x22f/0x4de [ 43.168901] ? add_taint.cold.5+0x16/0x16 [ 43.173047] ? __warn.cold.8+0x148/0x1b3 [ 43.177091] ? __warn.cold.8+0x117/0x1b3 [ 43.181153] ? bpf_prog_select_runtime+0x53c/0x640 [ 43.186070] __warn.cold.8+0x163/0x1b3 [ 43.189944] ? bpf_prog_select_runtime+0x53c/0x640 [ 43.194862] report_bug+0x252/0x2d0 [ 43.198493] do_error_trap+0x1de/0x490 [ 43.202366] ? math_error+0x420/0x420 [ 43.206152] ? kfree+0x111/0x260 [ 43.209503] ? bpf_convert_filter+0x37fe/0x4400 [ 43.214154] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.219152] ? trace_hardirqs_on+0xd/0x10 [ 43.223286] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 43.228812] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.233640] do_invalid_op+0x1b/0x20 [ 43.237338] invalid_op+0x14/0x20 [ 43.240774] RIP: 0010:bpf_prog_select_runtime+0x53c/0x640 [ 43.246289] RSP: 0018:ffff8801b094f8a8 EFLAGS: 00010293 [ 43.251639] RAX: ffff8801b194e040 RBX: ffffc90001944000 RCX: ffffffff81857b67 [ 43.258892] RDX: 0000000000000000 RSI: ffffffff81857efc RDI: 0000000000000005 [ 43.266232] RBP: ffff8801b094f908 R08: ffff8801b194e040 R09: 0000000000000006 [ 43.273487] R10: ffff8801b194e040 R11: 0000000000000000 R12: 00000000fffffff4 [ 43.280739] R13: ffffffff81862050 R14: 0000000000000000 R15: ffff8801d7186480 [ 43.288006] ? __bpf_prog_run64+0x120/0x120 [ 43.292320] ? bpf_prog_select_runtime+0x1a7/0x640 [ 43.297243] ? bpf_prog_select_runtime+0x53c/0x640 [ 43.302250] ? bpf_prog_select_runtime+0x53c/0x640 [ 43.307166] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 43.312166] ? bpf_prog_realloc+0x7a/0x340 [ 43.316392] bpf_prepare_filter+0xb65/0x1060 [ 43.320791] ? bpf_convert_filter+0x4400/0x4400 [ 43.325459] ? memcpy+0x45/0x50 [ 43.328737] ? kmemdup+0x44/0x50 [ 43.332091] ? bpf_prog_store_orig_filter.isra.46+0x147/0x1f0 [ 43.337961] __get_filter+0x1e0/0x280 [ 43.341748] sk_reuseport_attach_filter+0x1d/0x90 [ 43.347070] sock_setsockopt+0x1ad3/0x1f40 [ 43.351294] ? sock_enable_timestamp+0xe0/0xe0 [ 43.355862] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 43.361385] ? proc_fail_nth_write+0x96/0x1f0 [ 43.365874] ? proc_cwd_link+0x1d0/0x1d0 [ 43.369939] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.375459] ? __fget_light+0x2ef/0x430 [ 43.379421] ? fget_raw+0x20/0x20 [ 43.382861] ? lock_downgrade+0x8e0/0x8e0 [ 43.387000] ? __lock_is_held+0xb5/0x140 [ 43.391057] ? security_socket_setsockopt+0x94/0xc0 [ 43.396063] __sys_setsockopt+0x2df/0x390 [ 43.400197] ? kernel_accept+0x310/0x310 [ 43.404240] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.409758] ? ksys_write+0x1a6/0x250 [ 43.413562] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 43.418391] __x64_sys_setsockopt+0xbe/0x150 [ 43.422781] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.428130] do_syscall_64+0x1b1/0x800 [ 43.432007] ? syscall_return_slowpath+0x5c0/0x5c0 [ 43.436921] ? syscall_return_slowpath+0x30f/0x5c0 [ 43.441838] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 43.447189] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.452019] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.457194] RIP: 0033:0x455979 [ 43.460365] RSP: 002b:00007ffd0a44c648 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 43.468066] RAX: ffffffffffffffda RBX: 00000000014b0914 RCX: 0000000000455979 [ 43.475319] RDX: 0000000000000033 RSI: 0000000000000001 RDI: 0000000000000004 [ 43.482572] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 43.489824] R10: 0000000020000500 R11: 0000000000000246 R12: 0000000000000005 [ 43.497076] R13: 0000000000000578 R14: 00000000006fc3e0 R15: 000000000000000a [ 43.504858] Dumping ftrace buffer: [ 43.508489] (ftrace buffer empty) [ 43.512180] Kernel Offset: disabled [ 43.515798] Rebooting in 86400 seconds..