[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 34.335728] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 39.359820] random: sshd: uninitialized urandom read (32 bytes read) [ 39.893895] random: sshd: uninitialized urandom read (32 bytes read) [ 41.060732] random: sshd: uninitialized urandom read (32 bytes read) [ 41.288972] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.15' (ECDSA) to the list of known hosts. [ 46.790520] random: sshd: uninitialized urandom read (32 bytes read) 2018/05/09 17:04:21 parsed 1 programs 2018/05/09 17:04:21 executed programs: 0 [ 47.375250] IPVS: ftp: loaded support on port[0] = 21 [ 47.425528] FAULT_INJECTION: forcing a failure. [ 47.425528] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 47.437574] CPU: 1 PID: 4565 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #88 [ 47.444792] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.454151] Call Trace: [ 47.456756] dump_stack+0x185/0x1d0 [ 47.460401] should_fail+0x87b/0xab0 [ 47.464125] __alloc_pages_nodemask+0x61c/0x5dd0 [ 47.468932] ? __is_insn_slot_addr+0x198/0x1c0 [ 47.473551] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 47.479120] ? __alloc_pages_nodemask+0xf8e/0x5dd0 [ 47.484101] alloc_pages_current+0x6b5/0x970 [ 47.488528] __change_page_attr_set_clr+0x1904/0x5de0 [ 47.493764] ? update_load_avg+0x21fe/0x2d00 [ 47.498233] __change_page_attr_set_clr+0x4f86/0x5de0 [ 47.503877] ? rcu_segcblist_enqueue+0x189/0x2d0 [ 47.508665] ? kmsan_set_origin_inline+0x6b/0x120 [ 47.513566] ? __msan_poison_alloca+0x15c/0x1d0 [ 47.518261] ? __purge_vmap_area_lazy+0x2f0/0x3b0 [ 47.523151] ? __purge_vmap_area_lazy+0x2f0/0x3b0 [ 47.528012] ? __purge_vmap_area_lazy+0x369/0x3b0 [ 47.532909] ? mutex_unlock+0x15/0x80 [ 47.536750] change_page_attr_set_clr+0x8ea/0x1e00 [ 47.541733] set_memory_ro+0xd0/0x100 [ 47.545598] bpf_prog_select_runtime+0x3a5/0xa40 [ 47.550415] bpf_prepare_filter+0x1a96/0x1b10 [ 47.554968] __get_filter+0x5b7/0x7d0 [ 47.558820] sk_attach_filter+0x72/0x2e0 [ 47.562933] sock_setsockopt+0x336e/0x46f0 [ 47.567222] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 47.572643] __sys_setsockopt+0x33e/0x560 [ 47.576907] __x64_sys_setsockopt+0x15c/0x1c0 [ 47.581462] do_syscall_64+0x154/0x220 [ 47.585382] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 47.590759] RIP: 0033:0x455979 [ 47.593987] RSP: 002b:00007ffe1bf8bba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 47.601750] RAX: ffffffffffffffda RBX: 0000000000ffb914 RCX: 0000000000455979 [ 47.609037] RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000003 [ 47.616354] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 47.623669] R10: 0000000020000440 R11: 0000000000000246 R12: 0000000000000004 [ 47.630968] R13: 0000000000000579 R14: 00000000006fc3f8 R15: 000000000000000c [ 47.638438] ================================================================== [ 47.645839] BUG: KMSAN: uninit-value in report_bug+0x110/0x880 [ 47.651809] CPU: 1 PID: 4565 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #88 [ 47.658986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.668440] Call Trace: [ 47.671026] dump_stack+0x185/0x1d0 [ 47.674651] ? report_bug+0x110/0x880 [ 47.678452] kmsan_report+0x142/0x240 [ 47.682240] __msan_warning_32+0x6c/0xb0 [ 47.686289] ? nhmex_mbox_hw_config+0x9c6/0xa90 [ 47.690945] report_bug+0x110/0x880 [ 47.694582] ? __msan_poison_alloca+0x15c/0x1d0 [ 47.699240] ? bpf_prog_select_runtime+0x95b/0xa40 [ 47.704179] ? do_error_trap+0xac/0x600 [ 47.708145] ? do_invalid_op+0x46/0x50 [ 47.712037] ? bpf_prog_select_runtime+0x95b/0xa40 [ 47.716965] do_error_trap+0x1aa/0x600 [ 47.720844] ? change_page_attr_set_clr+0xb1c/0x1e00 [ 47.725946] do_invalid_op+0x46/0x50 [ 47.729665] invalid_op+0x14/0x20 [ 47.733108] RIP: 0010:bpf_prog_select_runtime+0x95b/0xa40 [ 47.738633] RSP: 0018:ffff88019bf9fa00 EFLAGS: 00010293 [ 47.745132] RAX: ffffffff8176fecb RBX: ffff8801d8b9e098 RCX: ffff8801d8b9d7c0 [ 47.752397] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 47.759656] RBP: ffff88019bf9fad0 R08: 00000000000000a3 R09: ffff88019afcf7a0 [ 47.766913] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 47.775274] R13: 0000000000000004 R14: 00000000fffffff4 R15: ffffc900018b5000 [ 47.782541] ? bpf_prog_select_runtime+0x95b/0xa40 [ 47.787467] bpf_prepare_filter+0x1a96/0x1b10 [ 47.792007] __get_filter+0x5b7/0x7d0 [ 47.795826] sk_attach_filter+0x72/0x2e0 [ 47.799913] sock_setsockopt+0x336e/0x46f0 [ 47.804151] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 47.809510] __sys_setsockopt+0x33e/0x560 [ 47.813663] __x64_sys_setsockopt+0x15c/0x1c0 [ 47.818153] do_syscall_64+0x154/0x220 [ 47.822043] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 47.827223] RIP: 0033:0x455979 [ 47.830398] RSP: 002b:00007ffe1bf8bba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 47.838116] RAX: ffffffffffffffda RBX: 0000000000ffb914 RCX: 0000000000455979 [ 47.845471] RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000003 [ 47.853067] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 47.860324] R10: 0000000020000440 R11: 0000000000000246 R12: 0000000000000004 [ 47.867583] R13: 0000000000000579 R14: 00000000006fc3f8 R15: 000000000000000c [ 47.874845] [ 47.876581] Local variable description: ----c.i.i.i@release_pages [ 47.882819] Variable was created at: [ 47.886543] release_pages+0x67/0x1670 [ 47.890451] pagevec_lru_move_fn+0x488/0x4e0 [ 47.894959] ================================================================== [ 47.902330] Disabling lock debugging due to kernel taint [ 47.907782] Kernel panic - not syncing: panic_on_warn set ... [ 47.907782] [ 47.915224] CPU: 1 PID: 4565 Comm: syz-executor0 Tainted: G B 4.17.0-rc3+ #88 [ 47.923786] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.933141] Call Trace: [ 47.935743] dump_stack+0x185/0x1d0 [ 47.939384] panic+0x39d/0x940 [ 47.942583] ? report_bug+0x110/0x880 [ 47.946370] kmsan_report+0x238/0x240 [ 47.950161] __msan_warning_32+0x6c/0xb0 [ 47.954227] ? nhmex_mbox_hw_config+0x9c6/0xa90 [ 47.958917] report_bug+0x110/0x880 [ 47.962591] ? __msan_poison_alloca+0x15c/0x1d0 [ 47.967259] ? bpf_prog_select_runtime+0x95b/0xa40 [ 47.972188] ? do_error_trap+0xac/0x600 [ 47.976173] ? do_invalid_op+0x46/0x50 [ 47.980084] ? bpf_prog_select_runtime+0x95b/0xa40 [ 47.985017] do_error_trap+0x1aa/0x600 [ 47.988906] ? change_page_attr_set_clr+0xb1c/0x1e00 [ 47.994013] do_invalid_op+0x46/0x50 [ 47.997729] invalid_op+0x14/0x20 [ 48.001257] RIP: 0010:bpf_prog_select_runtime+0x95b/0xa40 [ 48.006776] RSP: 0018:ffff88019bf9fa00 EFLAGS: 00010293 [ 48.012124] RAX: ffffffff8176fecb RBX: ffff8801d8b9e098 RCX: ffff8801d8b9d7c0 [ 48.019385] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 48.026651] RBP: ffff88019bf9fad0 R08: 00000000000000a3 R09: ffff88019afcf7a0 [ 48.033927] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 48.041198] R13: 0000000000000004 R14: 00000000fffffff4 R15: ffffc900018b5000 [ 48.048494] ? bpf_prog_select_runtime+0x95b/0xa40 [ 48.053440] bpf_prepare_filter+0x1a96/0x1b10 [ 48.057940] __get_filter+0x5b7/0x7d0 [ 48.061733] sk_attach_filter+0x72/0x2e0 [ 48.065797] sock_setsockopt+0x336e/0x46f0 [ 48.070033] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 48.075396] __sys_setsockopt+0x33e/0x560 [ 48.079535] __x64_sys_setsockopt+0x15c/0x1c0 [ 48.084045] do_syscall_64+0x154/0x220 [ 48.087940] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 48.093124] RIP: 0033:0x455979 [ 48.096295] RSP: 002b:00007ffe1bf8bba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 48.103996] RAX: ffffffffffffffda RBX: 0000000000ffb914 RCX: 0000000000455979 [ 48.111355] RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000003 [ 48.118614] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 48.125890] R10: 0000000020000440 R11: 0000000000000246 R12: 0000000000000004 [ 48.133143] R13: 0000000000000579 R14: 00000000006fc3f8 R15: 000000000000000c [ 48.140956] Dumping ftrace buffer: [ 48.144486] (ftrace buffer empty) [ 48.148188] Kernel Offset: disabled [ 48.151794] Rebooting in 86400 seconds..