[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 34.971930] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 36.159550] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 36.577912] random: sshd: uninitialized urandom read (32 bytes read) [ 37.980848] random: sshd: uninitialized urandom read (32 bytes read) [ 59.453175] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.18' (ECDSA) to the list of known hosts. [ 64.936207] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/21 12:43:10 parsed 1 programs [ 66.366373] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/21 12:43:13 executed programs: 0 [ 68.111896] IPVS: ftp: loaded support on port[0] = 21 [ 68.171251] IPVS: ftp: loaded support on port[0] = 21 [ 68.186670] IPVS: ftp: loaded support on port[0] = 21 [ 68.191807] IPVS: ftp: loaded support on port[0] = 21 [ 68.217215] IPVS: ftp: loaded support on port[0] = 21 [ 68.227133] IPVS: ftp: loaded support on port[0] = 21 [ 68.241434] IPVS: ftp: loaded support on port[0] = 21 [ 68.258928] IPVS: ftp: loaded support on port[0] = 21 2018/07/21 12:43:18 executed programs: 212 [ 75.479788] PANIC: double fault, error_code: 0x0 [ 75.484635] CPU: 1 PID: 5333 Comm: blkid Not tainted 4.18.0-rc5+ #29 [ 75.491147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.500536] RIP: 0010:kmsan_get_shadow_address+0x1b1/0x3d0 [ 75.506167] 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 [ 75.525502] RSP: 0018:fffffe000003d000 EFLAGS: 00010093 [ 75.530901] RAX: 000000000003d150 RBX: 0000000000000088 RCX: 000000000000002e [ 75.538275] RDX: 0000780000000000 RSI: 0000000000000001 RDI: 0000000000000001 [ 75.545559] RBP: fffffe000003d030 R08: 0000000000000000 R09: 00007fa3bcd3fbc8 [ 75.552841] R10: ffffffff8a400f48 R11: ffffffff8a400f48 R12: 0000000000000001 [ 75.560159] R13: fffffe000003d150 R14: 0000000000000001 R15: 0000000000000001 [ 75.567555] FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 [ 75.575800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.581703] CR2: fffffe000003cff8 CR3: 0000000195c9c000 CR4: 00000000001406e0 [ 75.589008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.596301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.603582] Call Trace: [ 75.606176] [ 75.609949] kmsan_memmove_shadow+0x87/0xe0 [ 75.614499] __msan_memmove+0xb7/0x150 [ 75.618454] fixup_bad_iret+0x85/0x110 [ 75.622369] error_entry+0xe8/0x100 [ 75.626219] RIP: 0000: (null) [ 75.630109] Code: Bad RIP value. [ 75.633498] RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 [ 75.641219] RAX: 00007ffe17af6970 RBX: ffffffff8a400f48 RCX: 00007fa3bcd3f1c8 [ 75.648529] RDX: 0000000000000246 RSI: 00000000ffffffb0 RDI: 0000000000000000 [ 75.655839] RBP: 00007ffe17af6970 R08: 0000000000000000 R09: 00007ffe17b412f4 [ 75.663142] R10: 00007fa3bcd3fbc8 R11: 0000000000000000 R12: 0000000000000000 [ 75.670454] R13: 00007ffe17b412f4 R14: 00007fa3bcd3fbc8 R15: 0000000000000000 [ 75.677757] ? general_protection+0x8/0x30 [ 75.682722] ? general_protection+0x8/0x30 [ 75.686972] [ 75.690338] Kernel panic - not syncing: Machine halted. [ 75.695717] CPU: 1 PID: 5333 Comm: blkid Not tainted 4.18.0-rc5+ #29 [ 75.702240] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.711632] Call Trace: [ 75.714256] <#DF> [ 75.716453] dump_stack+0x185/0x1e0 [ 75.720128] panic+0x3d0/0x9b0 [ 75.723407] ? show_regs+0xcc/0x100 [ 75.727143] df_debug+0xa6/0xb0 [ 75.730438] do_double_fault+0x30f/0x420 [ 75.734524] double_fault+0x1e/0x30 [ 75.738197] RIP: 0010:kmsan_get_shadow_address+0x1b1/0x3d0 [ 75.744114] 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 [ 75.763486] RSP: 0018:fffffe000003d000 EFLAGS: 00010093 [ 75.768886] RAX: 000000000003d150 RBX: 0000000000000088 RCX: 000000000000002e [ 75.776179] RDX: 0000780000000000 RSI: 0000000000000001 RDI: 0000000000000001 [ 75.783580] RBP: fffffe000003d030 R08: 0000000000000000 R09: 00007fa3bcd3fbc8 [ 75.790881] R10: ffffffff8a400f48 R11: ffffffff8a400f48 R12: 0000000000000001 [ 75.798198] R13: fffffe000003d150 R14: 0000000000000001 R15: 0000000000000001 [ 75.805508] ? general_protection+0x8/0x30 [ 75.809772] ? general_protection+0x8/0x30 [ 75.814021] [ 75.816261] [ 75.819562] kmsan_memmove_shadow+0x87/0xe0 [ 75.823913] __msan_memmove+0xb7/0x150 [ 75.827825] fixup_bad_iret+0x85/0x110 [ 75.831739] error_entry+0xe8/0x100 [ 75.835373] RIP: 0000: (null) [ 75.839259] Code: Bad RIP value. [ 75.842679] RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 [ 75.850529] RAX: 00007ffe17af6970 RBX: ffffffff8a400f48 RCX: 00007fa3bcd3f1c8 [ 75.857806] RDX: 0000000000000246 RSI: 00000000ffffffb0 RDI: 0000000000000000 [ 75.865081] RBP: 00007ffe17af6970 R08: 0000000000000000 R09: 00007ffe17b412f4 [ 75.872535] R10: 00007fa3bcd3fbc8 R11: 0000000000000000 R12: 0000000000000000 [ 75.879817] R13: 00007ffe17b412f4 R14: 00007fa3bcd3fbc8 R15: 0000000000000000 [ 75.887116] ? general_protection+0x8/0x30 [ 75.891375] ? general_protection+0x8/0x30 [ 75.895623] [ 75.899641] Dumping ftrace buffer: [ 75.903180] (ftrace buffer empty) [ 75.906876] Kernel Offset: disabled [ 75.910487] Rebooting in 86400 seconds..