==================================================================
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+0x145d/0x3220 net/key/af_key.c:1506
Read of size 2239 at addr ffff88009d156540 by task syz-executor1/14292

CPU: 0 PID: 14292 Comm: syz-executor1 Not tainted 4.4.135-ge75204c #53
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 dcf6ea65d1f1c498 ffff8800b75d76c0 ffffffff81e0ed0d
 ffffea0002745580 ffff88009d156540 0000000000000000 ffff88009d156700
 ffff88009d156500 ffff8800b75d76f8 ffffffff81515946 ffff88009d156540
Call Trace:
 [<ffffffff81e0ed0d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e0ed0d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81515946>] print_address_description+0x6c/0x216 mm/kasan/report.c:252
 [<ffffffff81515c65>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff81515c65>] kasan_report.cold.7+0x175/0x2f7 mm/kasan/report.c:408
 [<ffffffff814f86df>] check_memory_region_inline mm/kasan/kasan.c:325 [inline]
 [<ffffffff814f86df>] check_memory_region+0x14f/0x1b0 mm/kasan/kasan.c:332
 [<ffffffff814f8c23>] memcpy+0x23/0x50 mm/kasan/kasan.c:367
 [<ffffffff835876ad>] pfkey_msg2xfrm_state net/key/af_key.c:1227 [inline]
 [<ffffffff835876ad>] pfkey_add+0x145d/0x3220 net/key/af_key.c:1506
 [<ffffffff8358bd41>] pfkey_process+0x671/0x740 net/key/af_key.c:2834
 [<ffffffff8358d576>] pfkey_sendmsg+0x346/0xae0 net/key/af_key.c:3678
 [<ffffffff82f1e15c>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1e15c>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1fc25>] ___sys_sendmsg+0x745/0x880 net/socket.c:1962
 [<ffffffff82f21cc6>] __sys_sendmsg+0xd6/0x190 net/socket.c:1996
 [<ffffffff8300baea>] C_SYSC_sendmsg net/compat.c:722 [inline]
 [<ffffffff8300baea>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:720
 [<ffffffff81006d96>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d96>] do_fast_syscall_32+0x326/0x8b0 arch/x86/entry/common.c:459
 [<ffffffff838c40aa>] sysenter_flags_fixed+0xd/0x17

Allocated by task 14292:
 [<ffffffff810341d6>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814f8803>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814f8ae7>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814f8ae7>] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:616
 [<ffffffff814f92c4>] kasan_krealloc+0x64/0x80 mm/kasan/kasan.c:654
 [<ffffffff814f24ba>] ksize+0x8a/0xf0 mm/slub.c:3727
 [<ffffffff82f38053>] __alloc_skb+0x133/0x600 net/core/skbuff.c:237
 [<ffffffff8358d32e>] alloc_skb include/linux/skbuff.h:815 [inline]
 [<ffffffff8358d32e>] pfkey_sendmsg+0xfe/0xae0 net/key/af_key.c:3665
 [<ffffffff82f1e15c>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1e15c>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1fc25>] ___sys_sendmsg+0x745/0x880 net/socket.c:1962
 [<ffffffff82f21cc6>] __sys_sendmsg+0xd6/0x190 net/socket.c:1996
 [<ffffffff8300baea>] C_SYSC_sendmsg net/compat.c:722 [inline]
 [<ffffffff8300baea>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:720
 [<ffffffff81006d96>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d96>] do_fast_syscall_32+0x326/0x8b0 arch/x86/entry/common.c:459
 [<ffffffff838c40aa>] sysenter_flags_fixed+0xd/0x17

Freed by task 2025:
 [<ffffffff810341d6>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814f8803>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814f9132>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814f9132>] kasan_slab_free+0x72/0xc0 mm/kasan/kasan.c:589
 [<ffffffff814f6634>] slab_free_hook mm/slub.c:1383 [inline]
 [<ffffffff814f6634>] slab_free_freelist_hook mm/slub.c:1405 [inline]
 [<ffffffff814f6634>] slab_free mm/slub.c:2859 [inline]
 [<ffffffff814f6634>] kfree+0xf4/0x310 mm/slub.c:3749
 [<ffffffff82f37134>] skb_free_head net/core/skbuff.c:571 [inline]
 [<ffffffff82f37134>] skb_release_data+0x304/0x3b0 net/core/skbuff.c:602
 [<ffffffff82f3722a>] skb_release_all+0x4a/0x60 net/core/skbuff.c:661
 [<ffffffff82f37833>] __kfree_skb net/core/skbuff.c:675 [inline]
 [<ffffffff82f37833>] consume_skb+0xf3/0x3d0 net/core/skbuff.c:748
 [<ffffffff830b1f52>] netlink_broadcast_filtered+0x2b2/0x9c0 net/netlink/af_netlink.c:1479
 [<ffffffff81e18138>] kobject_uevent_env+0x6d8/0xb80 lib/kobject_uevent.c:316
 [<ffffffff81e185ff>] kobject_uevent+0x1f/0x30 lib/kobject_uevent.c:374
 [<ffffffff824b000a>] uevent_store+0x8a/0xe0 drivers/base/core.c:420
 [<ffffffff824abb7e>] dev_attr_store+0x5e/0x90 drivers/base/core.c:137
 [<ffffffff816a8084>] sysfs_kf_write+0x114/0x180 fs/sysfs/file.c:141
 [<ffffffff816a5823>] kernfs_fop_write+0x2b3/0x400 fs/kernfs/file.c:312
 [<ffffffff8151cb4c>] __vfs_write+0x11c/0x3f0 fs/read_write.c:489
 [<ffffffff8151e921>] vfs_write+0x191/0x4e0 fs/read_write.c:538
 [<ffffffff81520f29>] SYSC_write fs/read_write.c:585 [inline]
 [<ffffffff81520f29>] SyS_write+0xd9/0x1c0 fs/read_write.c:577
 [<ffffffff838c2765>] entry_SYSCALL_64_fastpath+0x22/0x9e

The buggy address belongs to the object at ffff88009d156500
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 64 bytes inside of
 512-byte region [ffff88009d156500, ffff88009d156700)
The buggy address belongs to the page:
BUG: unable to handle kernel paging request at fffffffc6d4c74c0
IP: [<ffffffff81224cb5>] cpuacct_charge+0x155/0x380 kernel/sched/cpuacct.c:247
PGD 440f067 PUD 0 
Thread overran stack, or stack corrupted
Oops: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 14308 Comm: syz-executor0 Not tainted 4.4.135-ge75204c #53
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d3b49800 task.stack: ffff8800b6840000
RIP: 0010:[<ffffffff81224cb5>]  [<ffffffff81224cb5>] cpuacct_charge+0x155/0x380 kernel/sched/cpuacct.c:247
RSP: 0018:ffff8801db307b90  EFLAGS: 00010046
RAX: 1ffffffff089500f RBX: 0000000000018528 RCX: ffffffff84a14cc0
RDX: fffffbff8da98e98 RSI: fffffffc6d4c74c0 RDI: ffffffff844a8078
RBP: ffff8801db307bd0 R08: ffff8801d3b4a178 R09: 0000000000000001
R10: 0000000000000001 R11: ffff8801d3b49800 R12: ffffffff844a7fa0
R13: dffffc0000000000 R14: 000000000063719f R15: ffffffff9d156500
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f571eb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: fffffffc6d4c74c0 CR3: 00000001cd977000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff81224bc0 0000000000000046 0000000000000003 ffff8801d3b49860
 ffff8801d3b49800 000000000063719f ffff8801d3b498b0 0000000000000000
 ffff8801db307c18 ffffffff811d9239 0000000000000005 ffff8801db31f4d8
Call Trace:
 <IRQ> 
 [<ffffffff811d9239>] update_curr+0x2c9/0x6d0 kernel/sched/fair.c:882
 [<ffffffff811e443a>] enqueue_entity kernel/sched/fair.c:3512 [inline]
 [<ffffffff811e443a>] enqueue_task_fair+0x2fa/0x2790 kernel/sched/fair.c:4695
 [<ffffffff811bb91d>] enqueue_task kernel/sched/core.c:858 [inline]
 [<ffffffff811bb91d>] activate_task+0x14d/0x280 kernel/sched/core.c:874
 [<ffffffff811bc94f>] ttwu_activate kernel/sched/core.c:1736 [inline]
 [<ffffffff811bc94f>] ttwu_do_activate.constprop.109+0xbf/0x1e0 kernel/sched/core.c:1789
 [<ffffffff811bfb60>] ttwu_queue kernel/sched/core.c:1934 [inline]
 [<ffffffff811bfb60>] try_to_wake_up+0x660/0xf00 kernel/sched/core.c:2068
 [<ffffffff811c0545>] wake_up_process+0x15/0x20 kernel/sched/core.c:2142
 [<ffffffff8129b718>] hrtimer_wakeup+0x48/0x60 kernel/time/hrtimer.c:1482
 [<ffffffff8129dd4d>] __run_hrtimer kernel/time/hrtimer.c:1261 [inline]
 [<ffffffff8129dd4d>] __hrtimer_run_queues+0x3ad/0x1000 kernel/time/hrtimer.c:1325
 [<ffffffff8129f4c1>] hrtimer_interrupt+0x1b1/0x430 kernel/time/hrtimer.c:1359
 [<ffffffff810ad614>] local_apic_timer_interrupt+0x74/0xa0 arch/x86/kernel/apic/apic.c:901
 [<ffffffff838c538c>] smp_apic_timer_interrupt+0x7c/0xa0 arch/x86/kernel/apic/apic.c:925
 [<ffffffff838c42d0>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:741
 <EOI> 
 [<ffffffff811a4017>] finish_lock_switch kernel/sched/sched.h:1177 [inline]
 [<ffffffff811a4017>] finish_task_switch+0x1e7/0x4e0 kernel/sched/core.c:2682
 [<ffffffff838b2fb4>] context_switch kernel/sched/core.c:2811 [inline]
 [<ffffffff838b2fb4>] __schedule+0x7d4/0x1d70 kernel/sched/core.c:3330
Code: 49 8d bc 24 d8 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 c4 01 00 00 49 8b 9c 24 d8 00 00 00 80 3a 00 0f 85 8f 01 00 00 <4a> 03 1c f9 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 be 01 00 
RIP  [<ffffffff81224cb5>] cpuacct_charge+0x155/0x380 kernel/sched/cpuacct.c:247
 RSP <ffff8801db307b90>
CR2: fffffffc6d4c74c0
---[ end trace 44c6a3e575abef95 ]---