[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.928314] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.512743] random: sshd: uninitialized urandom read (32 bytes read) [ 23.985953] random: sshd: uninitialized urandom read (32 bytes read) [ 24.709272] random: sshd: uninitialized urandom read (32 bytes read) [ 25.543139] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. [ 30.987955] random: sshd: uninitialized urandom read (32 bytes read) 2018/05/06 16:05:21 parsed 1 programs 2018/05/06 16:05:21 executed programs: 0 [ 31.464654] IPVS: ftp: loaded support on port[0] = 21 [ 31.509337] FAULT_INJECTION: forcing a failure. [ 31.509337] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 31.521288] CPU: 0 PID: 4529 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #60 [ 31.528466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.537800] Call Trace: [ 31.540375] dump_stack+0x1b9/0x294 [ 31.543988] ? dump_stack_print_info.cold.2+0x52/0x52 [ 31.549164] should_fail.cold.4+0xa/0x1a [ 31.553215] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 31.558302] ? graph_lock+0x170/0x170 [ 31.562083] ? debug_check_no_locks_freed+0x310/0x310 [ 31.567256] ? find_held_lock+0x36/0x1c0 [ 31.571295] ? __lock_is_held+0xb5/0x140 [ 31.575351] ? check_same_owner+0x320/0x320 [ 31.579663] ? rcu_note_context_switch+0x710/0x710 [ 31.584576] ? __might_sleep+0x95/0x190 [ 31.588533] __alloc_pages_nodemask+0x34e/0xd70 [ 31.593185] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 31.598187] ? kasan_check_read+0x11/0x20 [ 31.602312] ? rcu_is_watching+0x85/0x140 [ 31.606440] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 31.611609] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 31.616786] ? __unwind_start+0x166/0x330 [ 31.621018] ? __kernel_text_address+0xd/0x40 [ 31.625493] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 31.631013] alloc_pages_current+0x10c/0x210 [ 31.635401] depot_save_stack+0x3d8/0x450 [ 31.639529] save_stack+0xa9/0xd0 [ 31.642961] ? save_stack+0x43/0xd0 [ 31.646567] ? kasan_kmalloc+0xc4/0xe0 [ 31.650433] ? kasan_slab_alloc+0x12/0x20 [ 31.654561] ? kmem_cache_alloc_trace+0x13b/0x780 [ 31.659395] ? do_check+0x236/0xb570 [ 31.663087] ? bpf_check+0x3901/0x5f60 [ 31.668254] ? bpf_prog_load+0x1133/0x2080 [ 31.672467] ? __ia32_sys_bpf+0x389/0x4c0 [ 31.676595] ? do_fast_syscall_32+0x345/0xf9b [ 31.681069] ? entry_SYSENTER_compat+0x70/0x7f [ 31.685628] ? graph_lock+0x170/0x170 [ 31.689408] ? graph_lock+0x170/0x170 [ 31.693186] ? find_held_lock+0x36/0x1c0 [ 31.697225] ? find_held_lock+0x36/0x1c0 [ 31.701265] ? print_usage_bug+0xc0/0xc0 [ 31.705305] ? __lock_is_held+0xb5/0x140 [ 31.709356] ? kasan_unpoison_shadow+0x35/0x50 [ 31.713921] kasan_kmalloc+0xc4/0xe0 [ 31.717616] kasan_slab_alloc+0x12/0x20 [ 31.721573] kmem_cache_alloc_trace+0x13b/0x780 [ 31.726224] ? kasan_check_write+0x14/0x20 [ 31.730448] ? do_raw_spin_lock+0xc1/0x200 [ 31.734673] do_check+0x236/0xb570 [ 31.738203] ? save_stack+0xa9/0xd0 [ 31.741811] ? save_stack+0x43/0xd0 [ 31.745424] ? __kasan_slab_free+0x11a/0x170 [ 31.749815] ? kasan_slab_free+0xe/0x10 [ 31.753767] ? kfree+0xd9/0x260 [ 31.757027] ? bpf_check+0x38f4/0x5f60 [ 31.760893] ? bpf_prog_load+0x1133/0x2080 [ 31.765110] ? do_fast_syscall_32+0x345/0xf9b [ 31.769586] ? entry_SYSENTER_compat+0x70/0x7f [ 31.774150] ? kasan_check_read+0x11/0x20 [ 31.778277] ? do_raw_spin_unlock+0x9e/0x2e0 [ 31.782663] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 31.787229] ? check_func_arg+0xca0/0xca0 [ 31.791362] ? do_raw_spin_lock+0xc1/0x200 [ 31.795579] ? trace_hardirqs_off+0xd/0x10 [ 31.799801] ? debug_check_no_obj_freed+0x2ff/0x584 [ 31.804799] ? __lock_is_held+0xb5/0x140 [ 31.808842] ? mark_held_locks+0xc9/0x160 [ 31.812968] ? quarantine_put+0xeb/0x190 [ 31.817010] ? kfree+0x111/0x260 [ 31.820370] ? bpf_check+0x38f4/0x5f60 [ 31.824237] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.829234] bpf_check+0x3901/0x5f60 [ 31.832931] ? ktime_get_with_offset+0x395/0x4a0 [ 31.837669] ? fixup_bpf_calls+0x1c70/0x1c70 [ 31.842057] ? ktime_get+0x430/0x430 [ 31.845748] ? __might_sleep+0x95/0x190 [ 31.849701] ? memset+0x31/0x40 [ 31.852963] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 31.858496] ? bpf_obj_name_cpy+0x17c/0x1c0 [ 31.862797] bpf_prog_load+0x1133/0x2080 [ 31.866838] ? bpf_prog_new_fd+0x60/0x60 [ 31.870877] ? find_held_lock+0x36/0x1c0 [ 31.874924] ? lock_downgrade+0x8e0/0x8e0 [ 31.879048] ? lock_release+0xa10/0xa10 [ 31.883001] ? check_same_owner+0x320/0x320 [ 31.887313] ? __check_object_size+0x95/0x5d9 [ 31.891792] ? __might_sleep+0x95/0x190 [ 31.895757] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.901283] __ia32_sys_bpf+0x389/0x4c0 [ 31.905237] ? __x64_sys_bpf+0x4c0/0x4c0 [ 31.909280] ? do_fast_syscall_32+0x148/0xf9b [ 31.913757] do_fast_syscall_32+0x345/0xf9b [ 31.918057] ? do_int80_syscall_32+0x880/0x880 [ 31.922618] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.927378] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.932902] ? syscall_return_slowpath+0x30f/0x5c0 [ 31.937812] ? sysret32_from_system_call+0x5/0x46 [ 31.942638] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.947461] entry_SYSENTER_compat+0x70/0x7f [ 31.951845] RIP: 0023:0xf7f87cb9 [ 31.955186] RSP: 002b:00000000ff8392fc EFLAGS: 00000286 ORIG_RAX: 0000000000000165 [ 31.962871] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000000 [ 31.970117] RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000000 [ 31.977366] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.984623] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 31.991870] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 32.020582] FAULT_INJECTION: forcing a failure. [ 32.020582] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 32.032504] CPU: 0 PID: 4531 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #60 [ 32.039671] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.049002] Call Trace: [ 32.051577] dump_stack+0x1b9/0x294 [ 32.055186] ? dump_stack_print_info.cold.2+0x52/0x52 [ 32.060366] ? __isolate_free_page+0x7c0/0x7c0 [ 32.064942] should_fail.cold.4+0xa/0x1a [ 32.068983] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 32.074071] ? debug_check_no_locks_freed+0x310/0x310 [ 32.079244] ? find_held_lock+0x36/0x1c0 [ 32.083297] ? check_same_owner+0x320/0x320 [ 32.087602] ? rcu_note_context_switch+0x710/0x710 [ 32.092512] ? __might_sleep+0x95/0x190 [ 32.096477] __alloc_pages_nodemask+0x34e/0xd70 [ 32.101131] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 32.106131] ? find_held_lock+0x36/0x1c0 [ 32.110180] ? lock_downgrade+0x8e0/0x8e0 [ 32.114309] ? lock_downgrade+0x8e0/0x8e0 [ 32.118455] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 32.123025] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 32.128555] alloc_pages_current+0x10c/0x210 [ 32.132953] __change_page_attr_set_clr+0x411/0x2ce0 [ 32.138050] ? _lookup_address_cpa.isra.24+0xa0/0xa0 [ 32.143140] ? graph_lock+0x170/0x170 [ 32.146921] ? lock_downgrade+0x8e0/0x8e0 [ 32.151054] ? find_held_lock+0x36/0x1c0 [ 32.155101] ? lock_downgrade+0x8e0/0x8e0 [ 32.159236] ? kasan_check_read+0x11/0x20 [ 32.163368] ? do_raw_spin_unlock+0x9e/0x2e0 [ 32.167758] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 32.172323] ? lookup_address_in_pgd+0xb1/0x530 [ 32.176977] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 32.181982] ? pfn_range_is_mapped+0xdc/0x110 [ 32.186464] __change_page_attr_set_clr+0x2517/0x2ce0 [ 32.191637] ? note_gp_changes+0x540/0x540 [ 32.195873] ? _lookup_address_cpa.isra.24+0xa0/0xa0 [ 32.200967] ? kasan_check_write+0x14/0x20 [ 32.205187] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 32.210100] ? wait_for_completion+0x870/0x870 [ 32.214664] ? __lock_is_held+0xb5/0x140 [ 32.218710] ? kasan_check_read+0x11/0x20 [ 32.222841] ? do_raw_spin_unlock+0x9e/0x2e0 [ 32.227233] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 32.231804] ? _raw_spin_unlock+0x22/0x30 [ 32.235934] ? mutex_unlock+0xd/0x10 [ 32.239630] ? vm_unmap_aliases+0x4ea/0x600 [ 32.243934] ? __kasan_slab_free+0x11a/0x170 [ 32.248328] ? purge_fragmented_blocks_allcpus+0xbb0/0xbb0 [ 32.253936] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 32.258523] change_page_attr_set_clr+0x44a/0x11a0 [ 32.263438] ? __change_page_attr_set_clr+0x2ce0/0x2ce0 [ 32.268794] ? trace_hardirqs_off+0xd/0x10 [ 32.273008] ? quarantine_put+0xeb/0x190 [ 32.277049] ? bpf_check+0x3d2/0x5f60 [ 32.280828] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.285824] ? trace_hardirqs_on+0xd/0x10 [ 32.289955] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.295484] ? do_jit+0x7420/0x7420 [ 32.299091] ? __bpf_prog_run64+0x120/0x120 [ 32.303395] set_memory_ro+0x73/0x90 [ 32.307092] ? _set_memory_wb+0x90/0x90 [ 32.311050] ? ktime_get+0x430/0x430 [ 32.314745] ? __might_sleep+0x95/0x190 [ 32.318699] ? __bpf_prog_run64+0x120/0x120 [ 32.323001] bpf_prog_select_runtime+0x19b/0x640 [ 32.327745] ? memset+0x31/0x40 [ 32.331007] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.336527] bpf_prog_load+0x16c5/0x2080 [ 32.340573] ? bpf_prog_new_fd+0x60/0x60 [ 32.344625] ? lock_downgrade+0x8e0/0x8e0 [ 32.348753] ? lock_release+0xa10/0xa10 [ 32.352707] ? check_same_owner+0x320/0x320 [ 32.357006] ? __check_object_size+0x95/0x5d9 [ 32.361495] ? __might_sleep+0x95/0x190 [ 32.365465] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 32.370985] __ia32_sys_bpf+0x389/0x4c0 [ 32.374949] ? __x64_sys_bpf+0x4c0/0x4c0 [ 32.379007] ? do_fast_syscall_32+0x148/0xf9b [ 32.383489] do_fast_syscall_32+0x345/0xf9b [ 32.387792] ? do_int80_syscall_32+0x880/0x880 [ 32.392357] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 32.397184] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.402712] ? syscall_return_slowpath+0x30f/0x5c0 [ 32.407626] ? sysret32_from_system_call+0x5/0x46 [ 32.412461] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.417294] entry_SYSENTER_compat+0x70/0x7f [ 32.421684] RIP: 0023:0xf7f87cb9 [ 32.425713] RSP: 002b:00000000ff8392fc EFLAGS: 00000286 ORIG_RAX: 0000000000000165 [ 32.433403] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000000 [ 32.440651] RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000000 [ 32.447898] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 32.455148] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 32.462403] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 32.469809] WARNING: CPU: 0 PID: 4531 at include/linux/filter.h:651 bpf_prog_select_runtime+0x53c/0x640 [ 32.479328] Kernel panic - not syncing: panic_on_warn set ... [ 32.479328] [ 32.486674] CPU: 0 PID: 4531 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #60 [ 32.493837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.503169] Call Trace: [ 32.505740] dump_stack+0x1b9/0x294 [ 32.509360] ? dump_stack_print_info.cold.2+0x52/0x52 [ 32.514538] ? bpf_prog_select_runtime+0x440/0x640 [ 32.519447] panic+0x22f/0x4de [ 32.522620] ? add_taint.cold.5+0x16/0x16 [ 32.526762] ? __warn.cold.8+0x148/0x1b3 [ 32.530804] ? __warn.cold.8+0x117/0x1b3 [ 32.534844] ? bpf_prog_select_runtime+0x53c/0x640 [ 32.539752] __warn.cold.8+0x163/0x1b3 [ 32.543622] ? bpf_prog_select_runtime+0x53c/0x640 [ 32.548534] report_bug+0x252/0x2d0 [ 32.552140] do_error_trap+0x1de/0x490 [ 32.556006] ? trace_hardirqs_off+0xd/0x10 [ 32.560218] ? math_error+0x420/0x420 [ 32.563997] ? bpf_check+0x3d2/0x5f60 [ 32.567788] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.572785] ? trace_hardirqs_on+0xd/0x10 [ 32.576917] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.582446] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.587270] do_invalid_op+0x1b/0x20 [ 32.590965] invalid_op+0x14/0x20 [ 32.594402] RIP: 0010:bpf_prog_select_runtime+0x53c/0x640 [ 32.600001] RSP: 0018:ffff8801ac5f7a00 EFLAGS: 00010293 [ 32.605345] RAX: ffff8801b60b0040 RBX: ffffc90001962000 RCX: ffffffff81857b67 [ 32.612604] RDX: 0000000000000000 RSI: ffffffff81857efc RDI: 0000000000000005 [ 32.619853] RBP: ffff8801ac5f7a60 R08: ffff8801b60b0040 R09: 0000000000000000 [ 32.627103] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffff4 [ 32.634354] R13: ffffffff81862050 R14: ffffc90001962000 R15: ffff8801ac5f7ac8 [ 32.641616] ? __bpf_prog_run64+0x120/0x120 [ 32.645918] ? bpf_prog_select_runtime+0x1a7/0x640 [ 32.650835] ? bpf_prog_select_runtime+0x53c/0x640 [ 32.655751] ? memset+0x31/0x40 [ 32.659011] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.664615] bpf_prog_load+0x16c5/0x2080 [ 32.668659] ? bpf_prog_new_fd+0x60/0x60 [ 32.672714] ? lock_downgrade+0x8e0/0x8e0 [ 32.676842] ? lock_release+0xa10/0xa10 [ 32.680797] ? check_same_owner+0x320/0x320 [ 32.685110] ? __check_object_size+0x95/0x5d9 [ 32.689590] ? __might_sleep+0x95/0x190 [ 32.693547] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 32.699067] __ia32_sys_bpf+0x389/0x4c0 [ 32.703030] ? __x64_sys_bpf+0x4c0/0x4c0 [ 32.707075] ? do_fast_syscall_32+0x148/0xf9b [ 32.711564] do_fast_syscall_32+0x345/0xf9b [ 32.715867] ? do_int80_syscall_32+0x880/0x880 [ 32.720432] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 32.725258] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.730779] ? syscall_return_slowpath+0x30f/0x5c0 [ 32.735695] ? sysret32_from_system_call+0x5/0x46 [ 32.740524] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.745350] entry_SYSENTER_compat+0x70/0x7f [ 32.749747] RIP: 0023:0xf7f87cb9 [ 32.753089] RSP: 002b:00000000ff8392fc EFLAGS: 00000286 ORIG_RAX: 0000000000000165 [ 32.760780] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000000 [ 32.768039] RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000000 [ 32.775293] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 32.782550] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 32.789801] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 32.797577] Dumping ftrace buffer: [ 32.801201] (ftrace buffer empty) [ 32.804891] Kernel Offset: disabled [ 32.808500] Rebooting in 86400 seconds..