random: sshd: uninitialized urandom read (32 bytes read, 111 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available)
IPVS: Creating netns size=2552 id=1
==================================================================
BUG: KASAN: slab-out-of-bounds in ip6_dst_idev include/net/ip6_fib.h:141 [inline]
BUG: KASAN: slab-out-of-bounds in ip6_xmit+0x1a2c/0x1a70 net/ipv6/ip6_output.c:237
Read of size 8 at addr ffff8801cac61b58 by task syz-executor0/4052

CPU: 1 PID: 4052 Comm: syz-executor0 Not tainted 4.4.120-gd63fdf6 #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 34a5173e4f732d3a ffff8800aaf7f768 ffffffff81d0408d
 ffffea00072b1840 ffff8801cac61b58 0000000000000000 ffff8801cac61b58
 0000000000000040 ffff8800aaf7f7a0 ffffffff814fe143 ffff8801cac61b58
Call Trace:
 [<ffffffff81d0408d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0408d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fe143>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fe655>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fe655>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814fe7b4>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff8330649c>] ip6_dst_idev include/net/ip6_fib.h:141 [inline]
 [<ffffffff8330649c>] ip6_xmit+0x1a2c/0x1a70 net/ipv6/ip6_output.c:237
 [<ffffffff833c70f6>] inet6_csk_xmit+0x246/0x480 net/ipv6/inet6_connection_sock.c:176
 [<ffffffff83459bef>] l2tp_xmit_core net/l2tp/l2tp_core.c:1084 [inline]
 [<ffffffff83459bef>] l2tp_xmit_skb+0xc2f/0xea0 net/l2tp/l2tp_core.c:1179
 [<ffffffff834666d4>] pppol2tp_sendmsg+0x584/0x7f0 net/l2tp/l2tp_ppp.c:355
 [<ffffffff82deba6a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82deba6a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82dec9b8>] SYSC_sendto+0x2c8/0x340 net/socket.c:1665
 [<ffffffff82deeeb0>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff837752ea>] sysenter_flags_fixed+0xd/0x17

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801cac61b40
 which belongs to the cache ip_dst_cache of size 208
The buggy address is located 24 bytes inside of
 208-byte region [ffff8801cac61b40, ffff8801cac61c10)
The buggy address belongs to the page:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 3783 Comm: syz-executor0 Not tainted 4.4.120-gd63fdf6 #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800ab041800 task.stack: ffff8800bbbf8000
RIP: 0010:[<ffffffff811a6cad>]  [<ffffffff811a6cad>] task_curr kernel/sched/core.c:1023 [inline]
RIP: 0010:[<ffffffff811a6cad>]  [<ffffffff811a6cad>] kick_process+0xdd/0x1c0 kernel/sched/core.c:1565
RSP: 0018:ffff8800bbbffb10  EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 000000000001f4c0 RCX: ffffffff81d63e4b
RDX: 0000000071d8e0f1 RSI: ffffffff839fe520 RDI: 000000038ec70788
RBP: ffff8800bbbffb30 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff1001777ff1a R12: ffff8801d7e21800
R13: 00000000814909c1 R14: 00000000814909c1 R15: ffff8800baa27300
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009e0e900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000558be27afaa8 CR3: 00000000af03c000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801d7e21800 0000000000000080 dffffc0000000000 ffff8801cfbd9bc0
 ffff8800bbbffb50 ffffffff81153bd5 ffff8801d7e21800 ffff8801d7e21800
 ffff8800bbbffba8 ffffffff811541d6 ffff8800bb275b00 ffffffff8115574b
Call Trace:
 [<ffffffff81153bd5>] signal_wake_up_state+0x55/0x70 kernel/signal.c:660
 [<ffffffff811541d6>] signal_wake_up include/linux/sched.h:3319 [inline]
 [<ffffffff811541d6>] complete_signal+0x5b6/0x700 kernel/signal.c:942
 [<ffffffff81155b1f>] __send_signal+0x90f/0x1330 kernel/signal.c:1080
 [<ffffffff8115658a>] send_signal+0x4a/0xc0 kernel/signal.c:1096
 [<ffffffff81158d14>] do_send_sig_info+0xa4/0x130 kernel/signal.c:1151
 [<ffffffff81159b9d>] group_send_sig_info+0xdd/0x170 kernel/signal.c:1273
 [<ffffffff81159cc0>] __kill_pgrp_info+0x90/0x120 kernel/signal.c:1291
 [<ffffffff8115a2c6>] kill_something_info kernel/signal.c:1397 [inline]
 [<ffffffff8115a2c6>] SYSC_kill+0x366/0x5b0 kernel/signal.c:2867
 [<ffffffff8116049c>] SyS_kill+0x1c/0x30 kernel/signal.c:2857
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff837752ea>] sysenter_flags_fixed+0xd/0x17
Code: 04 02 84 c0 74 08 3c 03 0f 8e b7 00 00 00 48 b8 00 00 00 00 00 fc ff df 45 8b 6d 10 4a 8d 3c ed 80 b9 7e 84 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 be 00 00 00 4a 03 1c ed 80 b9 7e 84 48 b8 00 
RIP  [<ffffffff811a6cad>] task_curr kernel/sched/core.c:1023 [inline]
RIP  [<ffffffff811a6cad>] kick_process+0xdd/0x1c0 kernel/sched/core.c:1565
 RSP <ffff8800bbbffb10>
---[ end trace 5e4bf2fea00d053c ]---