[ 13.632636] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.948026] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 18.204234] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 18.881424] random: sshd: uninitialized urandom read (32 bytes read, 96 bits of entropy available) [ 41.404983] random: sshd: uninitialized urandom read (32 bytes read, 113 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-1,10.128.0.16' (ECDSA) to the list of known hosts. [ 46.802714] random: sshd: uninitialized urandom read (32 bytes read, 118 bits of entropy available) executing program executing program [ 46.917642] kasan: CONFIG_KASAN_INLINE enabled [ 46.922060] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.934861] Dumping ftrace buffer: [ 46.938361] (ftrace buffer empty) [ 46.942046] Modules linked in: [ 46.945313] CPU: 1 PID: 3336 Comm: syzkaller663590 Not tainted 4.4.105-gb5797f6 #6 [ 46.952978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.962296] task: ffff8800b81b0000 task.stack: ffff8801d57c8000 [ 46.968312] RIP: 0010:[] [] udpv6_queue_rcv_skb+0x171/0x1360 [ 46.977407] RSP: 0018:ffff8801d57cf8c8 EFLAGS: 00010206 [ 46.982815] RAX: 0000000000000000 RBX: ffff8801d55e8000 RCX: 000000000000000c [ 46.990047] RDX: dffffc0000000000 RSI: ffff8800b88a6fc0 RDI: 0000000000000060 [ 46.997279] RBP: ffff8801d57cf908 R08: 0000000000000001 R09: 0000000000000001 [ 47.004513] R10: 0000000000000001 R11: 1ffff1003aaf9eea R12: ffff8800b88a6fc0 [ 47.011746] R13: 0000000000000001 R14: ffffed003aabd086 R15: ffff8800b88a7018 [ 47.018977] FS: 0000000002466880(0063) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 47.027165] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.033016] CR2: 0000000020cf6000 CR3: 00000001d44bf000 CR4: 00000000001406e0 [ 47.040248] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.047480] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.054713] Stack: [ 47.056821] 00000001d55e8088 ffff8801d55e8000 ffff8801d55e8088 dffffc0000000000 [ 47.064753] ffff8801d55e8000 0000000000000000 ffffed003aabd086 ffffffff85765280 [ 47.072683] ffff8801d57cf980 ffffffff82da0c15 ffff8801d55e8188 ffff8801d55e8190 [ 47.080621] Call Trace: [ 47.083172] [] release_sock+0x165/0x500 [ 47.088756] [] udpv6_sendmsg+0x8c1/0x2360 [ 47.094515] [] ? avc_has_perm+0x242/0x4a0 [ 47.100273] [] ? __udpv6_queue_rcv_skb+0x420/0x420 [ 47.106822] [] ? udp6_lib_lookup+0x20/0x20 [ 47.112685] [] ? avc_has_perm_noaudit+0x420/0x420 [ 47.119147] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 47.126123] [] ? sock_has_perm+0x1a0/0x390 [ 47.131968] [] ? sock_has_perm+0x24a/0x390 [ 47.137810] [] ? sock_has_perm+0x99/0x390 [ 47.143568] [] ? __lock_is_held+0xa1/0xf0 [ 47.149327] [] ? inet_sendmsg+0x1c5/0x430 [ 47.155084] [] inet_sendmsg+0x26c/0x430 [ 47.160671] [] ? inet_sendmsg+0x6e/0x430 [ 47.166350] [] ? security_socket_sendmsg+0x6a/0xa0 [ 47.172887] [] ? inet_recvmsg+0x490/0x490 [ 47.178645] [] sock_sendmsg+0xb5/0xf0 [ 47.184063] [] SYSC_sendto+0x267/0x300 [ 47.189558] [] ? SYSC_connect+0x2e0/0x2e0 [ 47.195412] [] ? handle_mm_fault+0x24ed/0x39b0 [ 47.201604] [] ? SYSC_bind+0x13e/0x240 [ 47.207105] [] ? retint_user+0x18/0x20 [ 47.212603] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 47.219400] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 47.225942] [] SyS_sendto+0x9/0x10 [ 47.231097] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 47.237639] Code: 85 a0 10 00 00 49 8b 44 24 58 a8 01 0f 85 04 07 00 00 48 ba 00 00 00 00 00 fc ff df 48 83 e0 fe 48 8d 78 60 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 01 0f 8e 73 0a 00 00 f6 40 60 04 [ 47.263863] RIP [] udpv6_queue_rcv_skb+0x171/0x1360 [ 47.270607] RSP [ 47.274231] ---[ end trace c3368fd087b9c424 ]--- [ 47.278957] Kernel panic - not syncing: Fatal exception in interrupt [ 47.285435] Dumping ftrace buffer: [ 47.288938] (ftrace buffer empty) [ 47.292614] Kernel Offset: disabled [ 47.296202] Rebooting in 86400 seconds..