random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 111 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 114 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 122 bits of entropy available)
==================================================================
BUG: KASAN: slab-out-of-bounds in pfkey_msg2xfrm_state net/key/af_key.c:1227 [inline]
BUG: KASAN: slab-out-of-bounds in pfkey_add+0x153f/0x3490 net/key/af_key.c:1506
Read of size 2368 at addr ffff8801cc31d1c0 by task syzkaller835260/3794

CPU: 0 PID: 3794 Comm: syzkaller835260 Not tainted 4.4.120-gd63fdf6 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 201a8aa742c29580 ffff8801c4aa7778 ffffffff81d0408d
 ffffea000730c700 ffff8801cc31d1c0 0000000000000000 ffff8801cc31d380
 ffff8801c4aa79b8 ffff8801c4aa77b0 ffffffff814fe143 ffff8801cc31d1c0
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
 [<ffffffff814fd097>] check_memory_region_inline mm/kasan/kasan.c:325 [inline]
 [<ffffffff814fd097>] check_memory_region+0x137/0x190 mm/kasan/kasan.c:332
 [<ffffffff814fd5d3>] memcpy+0x23/0x50 mm/kasan/kasan.c:367
 [<ffffffff83445d9f>] pfkey_msg2xfrm_state net/key/af_key.c:1227 [inline]
 [<ffffffff83445d9f>] pfkey_add+0x153f/0x3490 net/key/af_key.c:1506
 [<ffffffff8344a45b>] pfkey_process+0x68b/0x750 net/key/af_key.c:2834
 [<ffffffff8344bcb9>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3678
 [<ffffffff82deba6a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82deba6a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82ded641>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962
 [<ffffffff82def693>] __sys_sendmsg+0xd3/0x190 net/socket.c:1996
 [<ffffffff82def77d>] SYSC_sendmsg net/socket.c:2007 [inline]
 [<ffffffff82def77d>] SyS_sendmsg+0x2d/0x50 net/socket.c:2003
 [<ffffffff8377395f>] entry_SYSCALL_64_fastpath+0x1c/0x98

Allocated by task 3794:
 [<ffffffff81035d96>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814fd1b3>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814fd47d>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814fd47d>] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:616
 [<ffffffff814fdc54>] kasan_krealloc+0x64/0x80 mm/kasan/kasan.c:654
 [<ffffffff814f6a52>] ksize+0x92/0xf0 mm/slub.c:3727
 [<ffffffff82e06b22>] __alloc_skb+0x132/0x600 net/core/skbuff.c:237
 [<ffffffff8344ba45>] alloc_skb include/linux/skbuff.h:815 [inline]
 [<ffffffff8344ba45>] pfkey_sendmsg+0x135/0x760 net/key/af_key.c:3665
 [<ffffffff82deba6a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82deba6a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82ded641>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962
 [<ffffffff82def693>] __sys_sendmsg+0xd3/0x190 net/socket.c:1996
 [<ffffffff82def77d>] SYSC_sendmsg net/socket.c:2007 [inline]
 [<ffffffff82def77d>] SyS_sendmsg+0x2d/0x50 net/socket.c:2003
 [<ffffffff8377395f>] entry_SYSCALL_64_fastpath+0x1c/0x98

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801cc31d180
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 64 bytes inside of
 512-byte region [ffff8801cc31d180, ffff8801cc31d380)
The buggy address belongs to the page:
PANIC: double fault, error_code: 0x0
CPU: 0 PID: 3794 Comm: syzkaller835260 Not tainted 4.4.120-gd63fdf6 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d8e4c800 task.stack: ffff8801c4aa0000
RIP: 0010:[<ffffffff8149083d>]  [<ffffffff8149083d>] dump_page_badflags+0xd/0x250 mm/debug.c:84
RSP: 0018:ffff880100000000  EFLAGS: 00010046
RAX: ffff8801d8e4c800 RBX: ffffea000730c700 RCX: ffffffff814909b0
RDX: 0000000000000000 RSI: ffffffff838a9060 RDI: ffffea000730c700
RBP: ffff880100000018 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: fffffbfff0ad7e1e R12: 0000000000000000
R13: ffffffff838a9060 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000002345880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8800fffffff8 CR3: 00000001c964a000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:

Call Trace:
 <UNK> 
Code: ff e8 88 df 06 00 e9 50 fd ff ff e8 7e df 06 00 e9 1d fd ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 49 89 f5 <41> 54 49 89 d4 53 48 89 fb 48 83 ec 08 e8 01 05 ed ff 48 8d 7b