[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 33.347515] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 33.648799] random: sshd: uninitialized urandom read (32 bytes read) [ 33.993363] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.356093] random: sshd: uninitialized urandom read (32 bytes read) [ 35.591998] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. [ 41.123536] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/16 08:45:19 parsed 1 programs [ 42.555838] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/16 08:45:22 executed programs: 0 [ 44.157437] IPVS: ftp: loaded support on port[0] = 21 [ 44.177664] IPVS: ftp: loaded support on port[0] = 21 [ 44.181067] IPVS: ftp: loaded support on port[0] = 21 [ 44.192017] IPVS: ftp: loaded support on port[0] = 21 [ 44.220111] IPVS: ftp: loaded support on port[0] = 21 [ 44.237261] IPVS: ftp: loaded support on port[0] = 21 [ 44.242503] IPVS: ftp: loaded support on port[0] = 21 [ 44.255934] IPVS: ftp: loaded support on port[0] = 21 [ 46.534722] PANIC: double fault, error_code: 0x0 [ 46.539530] CPU: 0 PID: 4880 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #27 [ 46.546713] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.556084] RIP: 0010:kmsan_get_shadow_address+0x1b1/0x3d0 [ 46.561701] 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 aa 84 59 ff 4c 89 e9 48 29 c1 85 c9 78 23 48 63 c1 48 3d ff af [ 46.581029] RSP: 0018:fffffe0000002000 EFLAGS: 00010093 [ 46.586401] RAX: 0000000000002150 RBX: 0000000000000088 RCX: 000000000000002e [ 46.593674] RDX: 0000780000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 46.600944] RBP: fffffe0000002030 R08: 00000000007034c0 R09: 0000000000000000 [ 46.608215] R10: ffffffff8a400f48 R11: ffffffff8a400f48 R12: 0000000000000001 [ 46.615489] R13: fffffe0000002150 R14: 0000000000000001 R15: 0000000000000000 [ 46.622763] FS: 0000000000ee3940(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 [ 46.630992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.636877] CR2: fffffe0000001ff8 CR3: 00000001a133a000 CR4: 00000000001406f0 [ 46.644154] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.651430] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.658761] Call Trace: [ 46.661443] [ 46.664735] kmsan_memmove_shadow+0x87/0xe0 [ 46.669067] __msan_memmove+0xb7/0x150 [ 46.672966] fixup_bad_iret+0x85/0x110 [ 46.676869] error_entry+0xe8/0x100 [ 46.680494] RIP: 0000: (null) [ 46.684373] Code: Bad RIP value. [ 46.687755] RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 [ 46.695465] RAX: 0000000000a3eab0 RBX: ffffffff8a400f48 RCX: 0000000000a3ea70 [ 46.702739] RDX: 0000000000000246 RSI: 0000000000ee3c10 RDI: 0000000000000000 [ 46.710008] RBP: 0000000000a3eab0 R08: 0000000000000001 R09: 0000000000000000 [ 46.717280] R10: 0000000000000000 R11: 00000000007034c0 R12: 0000000000000001 [ 46.724550] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000007034c0 [ 46.731838] ? general_protection+0x8/0x30 [ 46.736084] ? general_protection+0x8/0x30 [ 46.740323] [ 46.743682] Kernel panic - not syncing: Machine halted. [ 46.749053] CPU: 0 PID: 4880 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #27 [ 46.756234] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.765583] Call Trace: [ 46.768167] <#DF> [ 46.770331] dump_stack+0x185/0x1e0 [ 46.773966] panic+0x3d0/0x9b0 [ 46.777181] ? show_regs+0xcc/0x100 [ 46.780933] df_debug+0xa6/0xb0 [ 46.784227] do_double_fault+0x30f/0x420 [ 46.788307] double_fault+0x1e/0x30 [ 46.791944] RIP: 0010:kmsan_get_shadow_address+0x1b1/0x3d0 [ 46.797566] 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 aa 84 59 ff 4c 89 e9 48 29 c1 85 c9 78 23 48 63 c1 48 3d ff af [ 46.816856] RSP: 0018:fffffe0000002000 EFLAGS: 00010093 [ 46.822222] RAX: 0000000000002150 RBX: 0000000000000088 RCX: 000000000000002e [ 46.829498] RDX: 0000780000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 46.836777] RBP: fffffe0000002030 R08: 00000000007034c0 R09: 0000000000000000 [ 46.844048] R10: ffffffff8a400f48 R11: ffffffff8a400f48 R12: 0000000000000001 [ 46.851320] R13: fffffe0000002150 R14: 0000000000000001 R15: 0000000000000000 [ 46.858607] ? general_protection+0x8/0x30 [ 46.862851] ? general_protection+0x8/0x30 [ 46.867091] [ 46.869326] [ 46.872619] kmsan_memmove_shadow+0x87/0xe0 [ 46.876950] __msan_memmove+0xb7/0x150 [ 46.880851] fixup_bad_iret+0x85/0x110 [ 46.884752] error_entry+0xe8/0x100 [ 46.888374] RIP: 0000: (null) [ 46.892250] Code: Bad RIP value. [ 46.895628] RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 [ 46.903340] RAX: 0000000000a3eab0 RBX: ffffffff8a400f48 RCX: 0000000000a3ea70 [ 46.910609] RDX: 0000000000000246 RSI: 0000000000ee3c10 RDI: 0000000000000000 [ 46.917885] RBP: 0000000000a3eab0 R08: 0000000000000001 R09: 0000000000000000 [ 46.925166] R10: 0000000000000000 R11: 00000000007034c0 R12: 0000000000000001 [ 46.932443] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000007034c0 [ 46.939736] ? general_protection+0x8/0x30 [ 46.943983] ? general_protection+0x8/0x30 [ 46.948226] [ 46.951636] Dumping ftrace buffer: [ 46.955163] (ftrace buffer empty) [ 46.958852] Kernel Offset: disabled [ 46.962460] Rebooting in 86400 seconds..