[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 32.184010] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.237598] random: sshd: uninitialized urandom read (32 bytes read) [ 37.636015] random: sshd: uninitialized urandom read (32 bytes read) [ 38.797406] random: sshd: uninitialized urandom read (32 bytes read) [ 39.016409] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.37' (ECDSA) to the list of known hosts. [ 44.512286] random: sshd: uninitialized urandom read (32 bytes read) 2018/05/10 06:46:57 parsed 1 programs 2018/05/10 06:46:57 executed programs: 0 [ 45.057167] IPVS: ftp: loaded support on port[0] = 21 [ 45.104994] FAULT_INJECTION: forcing a failure. [ 45.104994] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 45.117007] CPU: 0 PID: 4532 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #88 [ 45.124206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.133600] Call Trace: [ 45.136213] dump_stack+0x185/0x1d0 [ 45.139842] should_fail+0x87b/0xab0 [ 45.143601] __alloc_pages_nodemask+0x61c/0x5dd0 [ 45.148399] ? __is_insn_slot_addr+0x198/0x1c0 [ 45.153000] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 45.158476] ? __alloc_pages_nodemask+0xf8e/0x5dd0 [ 45.163439] alloc_pages_current+0x6b5/0x970 [ 45.168499] __change_page_attr_set_clr+0x1904/0x5de0 [ 45.173727] ? update_load_avg+0x21fe/0x2d00 [ 45.178171] __change_page_attr_set_clr+0x4f86/0x5de0 [ 45.183359] ? rcu_segcblist_enqueue+0x189/0x2d0 [ 45.188142] ? kmsan_set_origin_inline+0x6b/0x120 [ 45.193003] ? __msan_poison_alloca+0x15c/0x1d0 [ 45.197718] ? __purge_vmap_area_lazy+0x2f0/0x3b0 [ 45.202595] ? __purge_vmap_area_lazy+0x2f0/0x3b0 [ 45.207441] ? __purge_vmap_area_lazy+0x369/0x3b0 [ 45.212312] ? mutex_unlock+0x15/0x80 [ 45.216127] change_page_attr_set_clr+0x8ea/0x1e00 [ 45.221097] set_memory_ro+0xd0/0x100 [ 45.224929] bpf_prog_select_runtime+0x3a5/0xa40 [ 45.229725] bpf_prepare_filter+0x1a96/0x1b10 [ 45.234253] __get_filter+0x5b7/0x7d0 [ 45.238115] sk_attach_filter+0x72/0x2e0 [ 45.242207] sock_setsockopt+0x336e/0x46f0 [ 45.246479] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 45.251864] __sys_setsockopt+0x33e/0x560 [ 45.256076] __x64_sys_setsockopt+0x15c/0x1c0 [ 45.260577] do_syscall_64+0x154/0x220 [ 45.264463] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.269642] RIP: 0033:0x455979 [ 45.272821] RSP: 002b:00007ffd824495c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 45.280523] RAX: ffffffffffffffda RBX: 0000000001be2914 RCX: 0000000000455979 [ 45.287785] RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000003 [ 45.295049] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 45.302308] R10: 0000000020000440 R11: 0000000000000246 R12: 0000000000000004 [ 45.309569] R13: 0000000000000579 R14: 00000000006fc3f8 R15: 000000000000000c [ 45.317054] ================================================================== [ 45.324410] BUG: KMSAN: uninit-value in is_valid_bugaddr+0x17f/0x1a0 [ 45.330883] CPU: 0 PID: 4532 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #88 [ 45.338044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.347381] Call Trace: [ 45.349948] dump_stack+0x185/0x1d0 [ 45.353553] ? is_valid_bugaddr+0x17f/0x1a0 [ 45.357859] kmsan_report+0x142/0x240 [ 45.361645] __msan_warning_32+0x6c/0xb0 [ 45.365680] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.370584] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.375487] is_valid_bugaddr+0x17f/0x1a0 [ 45.379610] ? report_bug+0x4b/0x880 [ 45.383298] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.388202] report_bug+0x6f/0x880 [ 45.391715] ? __msan_poison_alloca+0x15c/0x1d0 [ 45.396373] ? do_invalid_op+0x46/0x50 [ 45.400235] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.405139] ? do_error_trap+0xac/0x600 [ 45.409089] ? do_invalid_op+0x46/0x50 [ 45.412952] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.417872] do_error_trap+0x1aa/0x600 [ 45.421743] ? change_page_attr_set_clr+0xb1c/0x1e00 [ 45.426824] do_invalid_op+0x46/0x50 [ 45.430513] invalid_op+0x14/0x20 [ 45.433942] RIP: 0010:bpf_prog_select_runtime+0x95b/0xa40 [ 45.439452] RSP: 0018:ffff8801ba20fa00 EFLAGS: 00010293 [ 45.444800] RAX: ffffffff8176fecb RBX: ffff8801cdf62618 RCX: ffff8801cdf61d40 [ 45.452046] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 45.459292] RBP: ffff8801ba20fad0 R08: 00000000000000a3 R09: ffff8801ba21f7a0 [ 45.466536] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 45.473783] R13: 0000000000000004 R14: 00000000fffffff4 R15: ffffc9000189d000 [ 45.481046] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.485962] bpf_prepare_filter+0x1a96/0x1b10 [ 45.490536] __get_filter+0x5b7/0x7d0 [ 45.494315] sk_attach_filter+0x72/0x2e0 [ 45.498353] sock_setsockopt+0x336e/0x46f0 [ 45.502566] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 45.507908] __sys_setsockopt+0x33e/0x560 [ 45.512044] __x64_sys_setsockopt+0x15c/0x1c0 [ 45.516523] do_syscall_64+0x154/0x220 [ 45.520393] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.525563] RIP: 0033:0x455979 [ 45.528737] RSP: 002b:00007ffd824495c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 45.536417] RAX: ffffffffffffffda RBX: 0000000001be2914 RCX: 0000000000455979 [ 45.543661] RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000003 [ 45.550908] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 45.558156] R10: 0000000020000440 R11: 0000000000000246 R12: 0000000000000004 [ 45.565399] R13: 0000000000000579 R14: 00000000006fc3f8 R15: 000000000000000c [ 45.572646] [ 45.574249] Local variable description: ----c.i.i.i@release_pages [ 45.580452] Variable was created at: [ 45.584160] release_pages+0x67/0x1670 [ 45.588035] pagevec_lru_move_fn+0x488/0x4e0 [ 45.592417] ================================================================== [ 45.599750] Disabling lock debugging due to kernel taint [ 45.605173] Kernel panic - not syncing: panic_on_warn set ... [ 45.605173] [ 45.612512] CPU: 0 PID: 4532 Comm: syz-executor0 Tainted: G B 4.17.0-rc3+ #88 [ 45.621062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.630391] Call Trace: [ 45.632960] dump_stack+0x185/0x1d0 [ 45.636564] panic+0x39d/0x940 [ 45.639745] ? is_valid_bugaddr+0x17f/0x1a0 [ 45.644046] kmsan_report+0x238/0x240 [ 45.647833] __msan_warning_32+0x6c/0xb0 [ 45.651884] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.656790] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.661694] is_valid_bugaddr+0x17f/0x1a0 [ 45.665820] ? report_bug+0x4b/0x880 [ 45.669511] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.674418] report_bug+0x6f/0x880 [ 45.677935] ? __msan_poison_alloca+0x15c/0x1d0 [ 45.682591] ? do_invalid_op+0x46/0x50 [ 45.686475] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.691386] ? do_error_trap+0xac/0x600 [ 45.695340] ? do_invalid_op+0x46/0x50 [ 45.699206] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.704110] do_error_trap+0x1aa/0x600 [ 45.707977] ? change_page_attr_set_clr+0xb1c/0x1e00 [ 45.713063] do_invalid_op+0x46/0x50 [ 45.716762] invalid_op+0x14/0x20 [ 45.720194] RIP: 0010:bpf_prog_select_runtime+0x95b/0xa40 [ 45.725705] RSP: 0018:ffff8801ba20fa00 EFLAGS: 00010293 [ 45.731049] RAX: ffffffff8176fecb RBX: ffff8801cdf62618 RCX: ffff8801cdf61d40 [ 45.738297] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 45.745544] RBP: ffff8801ba20fad0 R08: 00000000000000a3 R09: ffff8801ba21f7a0 [ 45.752793] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 45.760047] R13: 0000000000000004 R14: 00000000fffffff4 R15: ffffc9000189d000 [ 45.767311] ? bpf_prog_select_runtime+0x95b/0xa40 [ 45.772224] bpf_prepare_filter+0x1a96/0x1b10 [ 45.776719] __get_filter+0x5b7/0x7d0 [ 45.780505] sk_attach_filter+0x72/0x2e0 [ 45.784547] sock_setsockopt+0x336e/0x46f0 [ 45.788760] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 45.794104] __sys_setsockopt+0x33e/0x560 [ 45.798233] __x64_sys_setsockopt+0x15c/0x1c0 [ 45.802705] do_syscall_64+0x154/0x220 [ 45.806575] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.811739] RIP: 0033:0x455979 [ 45.814904] RSP: 002b:00007ffd824495c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 45.822588] RAX: ffffffffffffffda RBX: 0000000001be2914 RCX: 0000000000455979 [ 45.829848] RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000003 [ 45.837092] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 45.844338] R10: 0000000020000440 R11: 0000000000000246 R12: 0000000000000004 [ 45.851582] R13: 0000000000000579 R14: 00000000006fc3f8 R15: 000000000000000c [ 45.859344] Dumping ftrace buffer: [ 45.862864] (ftrace buffer empty) [ 45.866550] Kernel Offset: disabled [ 45.870151] Rebooting in 86400 seconds..