[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 34.854691] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 36.470858] random: sshd: uninitialized urandom read (32 bytes read) [ 36.912980] random: sshd: uninitialized urandom read (32 bytes read) [ 38.359337] random: sshd: uninitialized urandom read (32 bytes read) [ 57.713608] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.25' (ECDSA) to the list of known hosts. [ 63.347182] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/20 20:49:57 parsed 1 programs [ 64.817693] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/20 20:49:59 executed programs: 0 [ 66.953384] IPVS: ftp: loaded support on port[0] = 21 [ 66.962417] IPVS: ftp: loaded support on port[0] = 21 [ 66.971221] IPVS: ftp: loaded support on port[0] = 21 [ 66.976510] IPVS: ftp: loaded support on port[0] = 21 [ 66.996709] IPVS: ftp: loaded support on port[0] = 21 [ 67.010650] IPVS: ftp: loaded support on port[0] = 21 [ 67.011142] IPVS: ftp: loaded support on port[0] = 21 [ 67.018569] IPVS: ftp: loaded support on port[0] = 21 [ 67.920332] ip (4743) used greatest stack depth: 53584 bytes left [ 70.886415] PANIC: double fault, error_code: 0x0 [ 70.891388] CPU: 1 PID: 5025 Comm: syz-executor5 Not tainted 4.18.0-rc5+ #29 [ 70.898589] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.907978] RIP: 0010:kmsan_get_shadow_address+0x1b1/0x3d0 [ 70.913627] Code: ff 48 01 cb e9 11 02 00 00 65 44 8b 3c 25 20 a1 02 00 48 b8 00 00 00 00 00 02 00 00 4c 01 e8 48 3d ff 0f ec 00 77 35 44 89 ff da 84 59 ff 4c 89 e9 48 29 c1 85 c9 78 23 48 63 c1 48 3d ff af [ 70.932976] RSP: 0018:fffffe000003d000 EFLAGS: 00010093 [ 70.938383] RAX: 000000000003d150 RBX: 0000000000000088 RCX: 000000000000002e [ 70.945672] RDX: 0000780000000000 RSI: 0000000000000001 RDI: 0000000000000001 [ 70.952958] RBP: fffffe000003d030 R08: 0000000000000001 R09: 0000000000a3f160 [ 70.960247] R10: ffffffff8a400f48 R11: ffffffff8a400f48 R12: 0000000000000001 [ 70.967537] R13: fffffe000003d150 R14: 0000000000000001 R15: 0000000000000001 [ 70.974825] FS: 0000000002377940(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 [ 70.983147] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.989306] CR2: fffffe000003cff8 CR3: 0000000190200000 CR4: 00000000001406e0 [ 70.996598] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.003908] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.011298] Call Trace: [ 71.013885] [ 71.017212] kmsan_memmove_shadow+0x87/0xe0 [ 71.021569] __msan_memmove+0xb7/0x150 [ 71.025478] fixup_bad_iret+0x85/0x110 [ 71.029414] error_entry+0xe8/0x100 [ 71.033045] RIP: 0000: (null) [ 71.036954] Code: Bad RIP value. [ 71.040365] RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 [ 71.048086] RAX: 0000000000000000 RBX: ffffffff8a400f48 RCX: 0000000000000000 [ 71.055371] RDX: 0000000000000246 RSI: 0000000000000000 RDI: 0000000000000000 [ 71.062656] RBP: 0000000000000000 R08: 00000000000117f3 R09: 0000000000000002 [ 71.069942] R10: 0000000000a3f160 R11: 0000000000000001 R12: 00000000000117f3 [ 71.077263] R13: 0000000000000002 R14: 0000000000a3f160 R15: 0000000000000001 [ 71.085192] ? general_protection+0x8/0x30 [ 71.089456] ? general_protection+0x8/0x30 [ 71.093706] [ 71.097074] Kernel panic - not syncing: Machine halted. [ 71.102447] CPU: 1 PID: 5025 Comm: syz-executor5 Not tainted 4.18.0-rc5+ #29 [ 71.109636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.118996] Call Trace: [ 71.121584] <#DF> [ 71.123752] dump_stack+0x185/0x1e0 [ 71.127416] panic+0x3d0/0x9b0 [ 71.130639] ? show_regs+0xcc/0x100 [ 71.134326] df_debug+0xa6/0xb0 [ 71.137649] do_double_fault+0x30f/0x420 [ 71.141737] double_fault+0x1e/0x30 [ 71.145407] RIP: 0010:kmsan_get_shadow_address+0x1b1/0x3d0 [ 71.151029] Code: ff 48 01 cb e9 11 02 00 00 65 44 8b 3c 25 20 a1 02 00 48 b8 00 00 00 00 00 02 00 00 4c 01 e8 48 3d ff 0f ec 00 77 35 44 89 ff da 84 59 ff 4c 89 e9 48 29 c1 85 c9 78 23 48 63 c1 48 3d ff af [ 71.170377] RSP: 0018:fffffe000003d000 EFLAGS: 00010093 [ 71.175758] RAX: 000000000003d150 RBX: 0000000000000088 RCX: 000000000000002e [ 71.183047] RDX: 0000780000000000 RSI: 0000000000000001 RDI: 0000000000000001 [ 71.190343] RBP: fffffe000003d030 R08: 0000000000000001 R09: 0000000000a3f160 [ 71.197627] R10: ffffffff8a400f48 R11: ffffffff8a400f48 R12: 0000000000000001 [ 71.204913] R13: fffffe000003d150 R14: 0000000000000001 R15: 0000000000000001 [ 71.212220] ? general_protection+0x8/0x30 [ 71.216484] ? general_protection+0x8/0x30 [ 71.220730] [ 71.222966] [ 71.226269] kmsan_memmove_shadow+0x87/0xe0 [ 71.230638] __msan_memmove+0xb7/0x150 [ 71.234551] fixup_bad_iret+0x85/0x110 [ 71.238465] error_entry+0xe8/0x100 [ 71.242098] RIP: 0000: (null) [ 71.245989] Code: Bad RIP value. [ 71.249389] RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 [ 71.257111] RAX: 0000000000000000 RBX: ffffffff8a400f48 RCX: 0000000000000000 [ 71.264395] RDX: 0000000000000246 RSI: 0000000000000000 RDI: 0000000000000000 [ 71.271680] RBP: 0000000000000000 R08: 00000000000117f3 R09: 0000000000000002 [ 71.278969] R10: 0000000000a3f160 R11: 0000000000000001 R12: 00000000000117f3 [ 71.286256] R13: 0000000000000002 R14: 0000000000a3f160 R15: 0000000000000001 [ 71.293554] ? general_protection+0x8/0x30 [ 71.297818] ? general_protection+0x8/0x30 [ 71.302064] [ 71.306186] Dumping ftrace buffer: [ 71.309741] (ftrace buffer empty) [ 71.313445] Kernel Offset: disabled [ 71.317211] Rebooting in 86400 seconds..