[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 28.306498] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 32.273469] random: sshd: uninitialized urandom read (32 bytes read) [ 32.544684] random: sshd: uninitialized urandom read (32 bytes read) [ 33.670788] random: sshd: uninitialized urandom read (32 bytes read) [ 33.873883] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. [ 39.291516] random: sshd: uninitialized urandom read (32 bytes read) 2018/05/16 05:42:57 parsed 1 programs 2018/05/16 05:42:57 executed programs: 0 [ 39.838947] IPVS: ftp: loaded support on port[0] = 21 [ 39.881356] FAULT_INJECTION: forcing a failure. [ 39.881356] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 39.893291] CPU: 0 PID: 4490 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #94 [ 39.900477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.909821] Call Trace: [ 39.912420] dump_stack+0x185/0x1d0 [ 39.916057] should_fail+0x87b/0xab0 [ 39.919773] __alloc_pages_nodemask+0x61c/0x5dd0 [ 39.924539] ? is_bpf_text_address+0xb4/0x4b0 [ 39.929055] ? kernel_text_address+0x34d/0x3a0 [ 39.933648] ? __kernel_text_address+0x34/0xe0 [ 39.938231] ? __alloc_pages_nodemask+0xf8e/0x5dd0 [ 39.943179] alloc_pages_current+0x6b5/0x970 [ 39.947592] __change_page_attr_set_clr+0x1904/0x5de0 [ 39.952792] ? update_load_avg+0x21fe/0x2d00 [ 39.957221] __change_page_attr_set_clr+0x4f86/0x5de0 [ 39.962405] ? rcu_segcblist_enqueue+0x189/0x2d0 [ 39.967159] ? kmsan_set_origin_inline+0x6b/0x120 [ 39.971998] ? __msan_poison_alloca+0x15c/0x1d0 [ 39.976674] ? __purge_vmap_area_lazy+0x2f0/0x3b0 [ 39.981527] ? __purge_vmap_area_lazy+0x2f0/0x3b0 [ 39.986380] ? __purge_vmap_area_lazy+0x369/0x3b0 [ 39.991237] ? mutex_unlock+0x15/0x80 [ 39.995059] change_page_attr_set_clr+0x8ea/0x1e00 [ 40.000010] set_memory_ro+0xd0/0x100 [ 40.003827] bpf_prog_select_runtime+0x3a5/0xa40 [ 40.008594] bpf_prepare_filter+0x1a96/0x1b10 [ 40.013099] __get_filter+0x5b7/0x7d0 [ 40.016905] sk_attach_filter+0x72/0x2e0 [ 40.021002] sock_setsockopt+0x336e/0x46f0 [ 40.025254] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 40.030622] __sys_setsockopt+0x33e/0x560 [ 40.034783] __x64_sys_setsockopt+0x15c/0x1c0 [ 40.039273] do_syscall_64+0x154/0x220 [ 40.043173] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 40.048351] RIP: 0033:0x455a09 [ 40.051529] RSP: 002b:00007fff0b54eab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 40.059233] RAX: ffffffffffffffda RBX: 0000000002a45914 RCX: 0000000000455a09 [ 40.066492] RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000003 [ 40.073752] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 40.081023] R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000004 [ 40.088297] R13: 00000000000005de R14: 00000000006fcd70 R15: 000000000000000c [ 40.095793] WARNING: CPU: 0 PID: 4490 at ./include/linux/filter.h:651 bpf_prog_select_runtime+0x95b/0xa40 [ 40.105525] Kernel panic - not syncing: panic_on_warn set ... [ 40.105525] [ 40.112915] CPU: 0 PID: 4490 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #94 [ 40.120091] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.129431] Call Trace: [ 40.132026] dump_stack+0x185/0x1d0 [ 40.135658] panic+0x39d/0x940 [ 40.138862] ? disable_trace_on_warning+0x18/0xd0 [ 40.143708] __warn+0x40f/0x580 [ 40.146980] ? bpf_prog_select_runtime+0x95b/0xa40 [ 40.151910] report_bug+0x72a/0x880 [ 40.155535] ? bpf_prog_select_runtime+0x95b/0xa40 [ 40.160500] do_error_trap+0x1cc/0x620 [ 40.164399] ? change_page_attr_set_clr+0xb1c/0x1e00 [ 40.169516] do_invalid_op+0x46/0x50 [ 40.173234] invalid_op+0x14/0x20 [ 40.176683] RIP: 0010:bpf_prog_select_runtime+0x95b/0xa40 [ 40.182205] RSP: 0018:ffff8801c630fa00 EFLAGS: 00010293 [ 40.187562] RAX: ffffffff8176dc7b RBX: ffff8801ce22a618 RCX: ffff8801ce229d40 [ 40.194822] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 40.202341] RBP: ffff8801c630fad0 R08: 00000000000000a4 R09: ffff8801c631f7a0 [ 40.209598] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.216859] R13: 0000000000000004 R14: 00000000fffffff4 R15: ffffc900018dd000 [ 40.224132] ? bpf_prog_select_runtime+0x95b/0xa40 [ 40.229081] bpf_prepare_filter+0x1a96/0x1b10 [ 40.233588] __get_filter+0x5b7/0x7d0 [ 40.237393] sk_attach_filter+0x72/0x2e0 [ 40.241461] sock_setsockopt+0x336e/0x46f0 [ 40.245700] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 40.251074] __sys_setsockopt+0x33e/0x560 [ 40.255234] __x64_sys_setsockopt+0x15c/0x1c0 [ 40.259730] do_syscall_64+0x154/0x220 [ 40.263617] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 40.268795] RIP: 0033:0x455a09 [ 40.271975] RSP: 002b:00007fff0b54eab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 40.279679] RAX: ffffffffffffffda RBX: 0000000002a45914 RCX: 0000000000455a09 [ 40.286942] RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000003 [ 40.294201] RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 [ 40.301458] R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000004 [ 40.308804] R13: 00000000000005de R14: 00000000006fcd70 R15: 000000000000000c [ 40.316545] Dumping ftrace buffer: [ 40.320070] (ftrace buffer empty) [ 40.323765] Kernel Offset: disabled [ 40.327385] Rebooting in 86400 seconds..