[ 15.657185] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.978904] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.227531] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 22.141194] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) [ 36.192097] random: sshd: uninitialized urandom read (32 bytes read, 122 bits of entropy available) Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. [ 41.570805] random: sshd: uninitialized urandom read (32 bytes read, 128 bits of entropy available) executing program [ 41.665905] kasan: CONFIG_KASAN_INLINE enabled [ 41.670325] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.683137] Dumping ftrace buffer: [ 41.686642] (ftrace buffer empty) [ 41.690319] Modules linked in: [ 41.693588] CPU: 0 PID: 161 Comm: kworker/0:1 Not tainted 4.4.111-g7902639 #25 [ 41.700909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.710237] Workqueue: events xfrm_hash_rebuild [ 41.714981] task: ffff8801d94aaf80 task.stack: ffff8800bb898000 [ 41.720999] RIP: 0010:[] [] xfrm_hash_rebuild+0x47b/0xa80 [ 41.729914] RSP: 0018:ffff8800bb89fba8 EFLAGS: 00010246 [ 41.735327] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff832a4572 [ 41.742562] RDX: 0000000000000000 RSI: ffff8800b3d92b84 RDI: ffffffff846f0030 [ 41.749799] RBP: ffff8800bb89fc30 R08: 0000000000000001 R09: 0000000000000000 [ 41.757039] R10: 0000000000000001 R11: 1ffff10017713f3c R12: ffff8800b3d92a80 [ 41.764274] R13: 0000000000000001 R14: ffffffff846f0078 R15: 0000000000000002 [ 41.771508] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 41.779701] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.785547] CR2: 0000000020013000 CR3: 00000000b808e000 CR4: 0000000000160670 [ 41.792786] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.800025] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.807258] Stack: [ 41.809373] ffffffff8117fe37 ffffffff846f0118 fffffbfff08de001 ffffffff846f000c [ 41.817321] ffffffff846f03b8 ffffffff846effd8 ffffffff846f0080 80ff8801db21eb40 [ 41.825264] ffffffff846effb8 ffffffff846ee9c0 0000000000000204 ffffffff846f0078 [ 41.833208] Call Trace: [ 41.835761] [] ? process_one_work+0x7d7/0x16e0 [ 41.841958] [] process_one_work+0x7d7/0x16e0 [ 41.847978] [] ? process_one_work+0x6f7/0x16e0 [ 41.854173] [] ? pwq_dec_nr_in_flight+0x280/0x280 [ 41.860628] [] ? worker_thread+0x284/0xfe0 [ 41.866489] [] worker_thread+0xdf/0xfe0 [ 41.872081] [] ? __schedule+0xa9d/0x1c70 [ 41.877756] [] ? preempt_schedule+0x24/0x30 [ 41.883697] [] ? ___preempt_schedule+0x12/0x14 [ 41.889895] [] kthread+0x268/0x300 [ 41.895047] [] ? process_one_work+0x16e0/0x16e0 [ 41.901332] [] ? kthread_create_on_node+0x400/0x400 [ 41.907962] [] ? kthread_create_on_node+0x400/0x400 [ 41.914593] [] ret_from_fork+0x3f/0x70 [ 41.920099] [] ? kthread_create_on_node+0x400/0x400 [ 41.926725] Code: 7c 08 84 d2 0f 85 ca 05 00 00 48 8b 7d c0 49 8d b4 24 f4 00 00 00 41 0f b7 94 24 74 02 00 00 e8 ec de ff ff 49 89 c5 48 c1 e8 03 <80> 3c 18 00 0f 85 e2 05 00 00 49 8b 55 00 49 8d 44 24 08 48 89 [ 41.953083] RIP [] xfrm_hash_rebuild+0x47b/0xa80 [ 41.959570] RSP [ 41.963207] ---[ end trace c77262b880ff3d93 ]--- [ 41.967946] Kernel panic - not syncing: Fatal exception in interrupt [ 41.974767] Dumping ftrace buffer: [ 41.978274] (ftrace buffer empty) [ 41.981949] Kernel Offset: disabled [ 41.985538] Rebooting in 86400 seconds..