[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 13.538980] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 28.047091] random: sshd: uninitialized urandom read (32 bytes read) [ 28.463464] random: sshd: uninitialized urandom read (32 bytes read) [ 28.940923] random: sshd: uninitialized urandom read (32 bytes read) [ 29.080409] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.59' (ECDSA) to the list of known hosts. [ 34.464416] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program [ 34.548991] IPVS: Creating netns size=2536 id=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.571267] IPVS: Creating netns size=2536 id=2 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.610291] IPVS: Creating netns size=2536 id=3 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.651315] IPVS: Creating netns size=2536 id=4 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.689240] IPVS: Creating netns size=2536 id=5 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.730366] IPVS: Creating netns size=2536 id=6 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.775736] IPVS: Creating netns size=2536 id=7 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.817342] IPVS: Creating netns size=2536 id=8 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.336032] BUG: unable to handle kernel paging request at ffffeafff8f08000 [ 36.343466] IP: [] copy_huge_pmd+0x260/0x550 [ 36.349592] PGD 0 [ 36.351569] [ 36.353221] Oops: 0000 [#1] PREEMPT SMP KASAN [ 36.357709] Dumping ftrace buffer: [ 36.361253] (ftrace buffer empty) [ 36.364957] Modules linked in: [ 36.368275] CPU: 0 PID: 6191 Comm: syz-executor166 Not tainted 4.9.120-gf85543b #28 [ 36.376062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.385414] task: ffff8801d4994800 task.stack: ffff8801d4a60000 [ 36.391476] RIP: 0010:[] [] copy_huge_pmd+0x260/0x550 [ 36.400015] RSP: 0018:ffff8801d4a679d8 EFLAGS: 00010246 [ 36.405461] RAX: dffffc0000000000 RBX: ffffeafff8f08000 RCX: 0000000000000000 [ 36.412723] RDX: 1ffffd5fff1e1000 RSI: ffffffff8154a3f5 RDI: 00003ffe3c2001e0 [ 36.420003] RBP: ffff8801d4a67a30 R08: ffffffff855f2a20 R09: 0000000000000001 [ 36.427272] R10: ffff8801d4994800 R11: ffff8801d4a676f7 R12: ffff8801d4aeef40 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.434535] R13: ffff8801da2fd800 R14: 00003ffe3c2001e0 R15: ffff8801d9043800 [ 36.441819] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7762b40 [ 36.450041] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 36.455916] CR2: ffffeafff8f08000 CR3: 00000001da0e6000 CR4: 00000000001606f0 [ 36.463204] Stack: [ 36.465363] 00003ffe3c2001e0 ffff8801d8a66898 ffff8801d84a2370 ffffea00072df900 [ 36.473448] 00003fffffe00000 0000000020000000 ffff8801d9043800 ffff8801d9043800 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.481542] 00000001d9043067 000000003fffffff dffffc0000000000 ffff8801d4a67bf8 [ 36.489623] Call Trace: [ 36.492213] [] copy_page_range+0x71e/0x19f0 [ 36.498189] [] ? __rb_insert_augmented+0x218/0xe60 [ 36.504764] [] ? __pmd_alloc+0x400/0x400 [ 36.510490] [] ? __vma_link_rb+0x226/0x320 [ 36.516371] [] copy_process.part.51+0x3d6b/0x6330 [ 36.522865] [] ? __cleanup_sighand+0x40/0x40 [ 36.528922] [] ? rwsem_wake+0x11b/0x1b0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.534545] [] _do_fork+0x1b0/0xdd0 [ 36.539831] [] ? fork_idle+0x270/0x270 [ 36.545387] [] ? up_read+0x30/0x40 [ 36.550586] [] ? __do_page_fault+0x183/0xd50 [ 36.556642] [] SyS_clone+0x37/0x50 [ 36.561835] [] ? entry_INT80_compat+0xb0/0xb0 [ 36.567984] [] do_fast_syscall_32+0x2f7/0x870 [ 36.574126] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.580810] [] entry_SYSENTER_compat+0x90/0xa2 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.587035] Code: 00 ea ff ff 48 23 45 c8 48 c1 e8 06 48 8d 1c 10 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 4c 02 00 00 <48> 8b 03 f6 c4 40 0f 84 c7 01 00 00 e8 af 63 e1 ff 48 8d 7b 20 [ 36.615181] RIP [] copy_huge_pmd+0x260/0x550 [ 36.621374] RSP [ 36.624991] CR2: ffffeafff8f08000 [ 36.628440] ---[ end trace 2230ed0f58b5be13 ]--- executing program [ 36.633186] Kernel panic - not syncing: Fatal exception [ 36.638994] Dumping ftrace buffer: [ 36.642523] (ftrace buffer empty) [ 36.646208] Kernel Offset: disabled [ 36.649812] Rebooting in 86400 seconds..