==================================================================
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 7488 at addr ffff8801da197918 by task syz-executor0/10186

CPU: 1 PID: 10186 Comm: syz-executor0 Not tainted 4.4.132-g1d92c59 #47
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 05e18f36b488d19b ffff8801cb6cf6c0 ffffffff81e0dfad
 ffffea0007686580 ffff8801da197918 0000000000000000 ffff8801da197b00
 ffff8801da197900 ffff8801cb6cf6f8 ffffffff8151527c ffff8801da197918
Call Trace:
 [<ffffffff81e0dfad>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e0dfad>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff8151527c>] print_address_description+0x6c/0x216 mm/kasan/report.c:252
 [<ffffffff8151559b>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff8151559b>] kasan_report.cold.7+0x175/0x2f7 mm/kasan/report.c:408
 [<ffffffff814f801f>] check_memory_region_inline mm/kasan/kasan.c:325 [inline]
 [<ffffffff814f801f>] check_memory_region+0x14f/0x1b0 mm/kasan/kasan.c:332
 [<ffffffff814f8563>] memcpy+0x23/0x50 mm/kasan/kasan.c:367
 [<ffffffff835851ed>] pfkey_msg2xfrm_state net/key/af_key.c:1227 [inline]
 [<ffffffff835851ed>] pfkey_add+0x145d/0x3220 net/key/af_key.c:1506
 [<ffffffff83589881>] pfkey_process+0x671/0x740 net/key/af_key.c:2834
 [<ffffffff8358b0b6>] pfkey_sendmsg+0x346/0xae0 net/key/af_key.c:3678
 [<ffffffff82f1cdcc>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1cdcc>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1e895>] ___sys_sendmsg+0x745/0x880 net/socket.c:1962
 [<ffffffff82f20936>] __sys_sendmsg+0xd6/0x190 net/socket.c:1996
 [<ffffffff8300a56a>] C_SYSC_sendmsg net/compat.c:720 [inline]
 [<ffffffff8300a56a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:718
 [<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
 [<ffffffff838c1baa>] sysenter_flags_fixed+0xd/0x17

Allocated by task 10186:
 [<ffffffff810341d6>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814f8143>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814f8427>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814f8427>] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:616
 [<ffffffff814f8c04>] kasan_krealloc+0x64/0x80 mm/kasan/kasan.c:654
 [<ffffffff814f1dfa>] ksize+0x8a/0xf0 mm/slub.c:3727
 [<ffffffff82f36cc3>] __alloc_skb+0x133/0x600 net/core/skbuff.c:237
 [<ffffffff8358ae6e>] alloc_skb include/linux/skbuff.h:815 [inline]
 [<ffffffff8358ae6e>] pfkey_sendmsg+0xfe/0xae0 net/key/af_key.c:3665
 [<ffffffff82f1cdcc>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1cdcc>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1e895>] ___sys_sendmsg+0x745/0x880 net/socket.c:1962
 [<ffffffff82f20936>] __sys_sendmsg+0xd6/0x190 net/socket.c:1996
 [<ffffffff8300a56a>] C_SYSC_sendmsg net/compat.c:720 [inline]
 [<ffffffff8300a56a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:718
 [<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
 [<ffffffff838c1baa>] sysenter_flags_fixed+0xd/0x17

Freed by task 2025:
 [<ffffffff810341d6>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814f8143>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814f8a72>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814f8a72>] kasan_slab_free+0x72/0xc0 mm/kasan/kasan.c:589
 [<ffffffff814f5f74>] slab_free_hook mm/slub.c:1383 [inline]
 [<ffffffff814f5f74>] slab_free_freelist_hook mm/slub.c:1405 [inline]
 [<ffffffff814f5f74>] slab_free mm/slub.c:2859 [inline]
 [<ffffffff814f5f74>] kfree+0xf4/0x310 mm/slub.c:3749
 [<ffffffff82f35da4>] skb_free_head net/core/skbuff.c:571 [inline]
 [<ffffffff82f35da4>] skb_release_data+0x304/0x3b0 net/core/skbuff.c:602
 [<ffffffff82f35e9a>] skb_release_all+0x4a/0x60 net/core/skbuff.c:661
 [<ffffffff82f364a3>] __kfree_skb net/core/skbuff.c:675 [inline]
 [<ffffffff82f364a3>] consume_skb+0xf3/0x3d0 net/core/skbuff.c:748
 [<ffffffff82f5422a>] skb_free_datagram+0x1a/0xe0 net/core/datagram.c:280
 [<ffffffff830afc23>] netlink_recvmsg+0x663/0xe30 net/netlink/af_netlink.c:1931
 [<ffffffff82f1bc01>] sock_recvmsg_nosec net/socket.c:727 [inline]
 [<ffffffff82f1bc01>] sock_recvmsg+0x91/0xc0 net/socket.c:735
 [<ffffffff82f1ec35>] ___sys_recvmsg+0x265/0x590 net/socket.c:2116
 [<ffffffff82f20e56>] __sys_recvmsg+0xd6/0x190 net/socket.c:2162
 [<ffffffff82f20f3d>] SYSC_recvmsg net/socket.c:2174 [inline]
 [<ffffffff82f20f3d>] SyS_recvmsg+0x2d/0x50 net/socket.c:2169
 [<ffffffff838c0265>] entry_SYSCALL_64_fastpath+0x22/0x9e

The buggy address belongs to the object at ffff8801da197900
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 24 bytes inside of
 512-byte region [ffff8801da197900, ffff8801da197b00)
The buggy address belongs to the page:
BUG: unable to handle kernel paging request at 0000000c0300030a
IP: [<ffffffff81eb6938>] find_stack lib/stackdepot.c:174 [inline]
IP: [<ffffffff81eb6938>] depot_save_stack+0x168/0x610 lib/stackdepot.c:225
PGD 1d894f067 PUD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 3884 Comm: syz-executor3 Not tainted 4.4.132-g1d92c59 #47
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800a3a54800 task.stack: ffff8801d8448000
RIP: 0010:[<ffffffff81eb6938>]  [<ffffffff81eb6938>] find_stack lib/stackdepot.c:174 [inline]
RIP: 0010:[<ffffffff81eb6938>]  [<ffffffff81eb6938>] depot_save_stack+0x168/0x610 lib/stackdepot.c:225
RSP: 0018:ffff8801d844f460  EFLAGS: 00010293
RAX: ffff8800a3a54800 RBX: 00000000e26eb1ae RCX: 000000001ccf3698
RDX: 0000000000000000 RSI: ffffffff81eb6938 RDI: ffff8801d844f4c8
RBP: ffff8801d844f4b8 R08: ffff8801d844f4c8 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000c03000302
R13: 00000000000eb1ae R14: 0000000000000013 R15: 0000000000000098
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009374900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000c0300030a CR3: 00000001d8e68000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 020980208122ee10 ffff8801d844f4e0 b1d8661300000002 ffff8801d844f4c8
 0000000000000000 b1d8661352cd70bc 0000000002098020 ffff8801d98fb8c0
 ffff8801d7cce3f0 0000000000000000 ffff8801d7cce3ef ffff8801d844f6e8
Call Trace:
 [<ffffffff814f81a9>] save_stack+0xa9/0xd0 mm/kasan/kasan.c:518
 [<ffffffff814f8427>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814f8427>] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:616
 [<ffffffff814f89f2>] kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:554
 [<ffffffff814f44ee>] slab_post_alloc_hook mm/slub.c:1349 [inline]
 [<ffffffff814f44ee>] slab_alloc_node mm/slub.c:2615 [inline]
 [<ffffffff814f44ee>] slab_alloc mm/slub.c:2623 [inline]
 [<ffffffff814f44ee>] kmem_cache_alloc+0xbe/0x2a0 mm/slub.c:2628
 [<ffffffff81c527d7>] kmem_cache_zalloc include/linux/slab.h:610 [inline]
 [<ffffffff81c527d7>] avc_alloc_node+0x27/0x3d0 security/selinux/avc.c:553
 [<ffffffff81c53688>] avc_insert security/selinux/avc.c:672 [inline]
 [<ffffffff81c53688>] avc_compute_av+0x178/0x610 security/selinux/avc.c:978
 [<ffffffff81c5572e>] avc_has_perm_noaudit security/selinux/avc.c:1114 [inline]
 [<ffffffff81c5572e>] avc_has_perm+0x36e/0x4f0 security/selinux/avc.c:1148
 [<ffffffff81c6938c>] task_has_perm+0x1fc/0x330 security/selinux/hooks.c:1525
 [<ffffffff81c694e3>] selinux_task_wait+0x23/0x30 security/selinux/hooks.c:3763
 [<ffffffff81c4e6d3>] security_task_wait+0x73/0xb0 security/security.c:986
 [<ffffffff81137118>] wait_consider_task+0x298/0x3600 kernel/exit.c:1330
 [<ffffffff8113a7e4>] do_wait_thread kernel/exit.c:1443 [inline]
 [<ffffffff8113a7e4>] do_wait+0x364/0xa30 kernel/exit.c:1514
 [<ffffffff8113b749>] SYSC_wait4 kernel/exit.c:1641 [inline]
 [<ffffffff8113b749>] SyS_wait4+0x119/0x1d0 kernel/exit.c:1610
 [<ffffffff812f5eb7>] C_SYSC_wait4+0x237/0x280 kernel/compat.c:543
 [<ffffffff812f626c>] compat_SyS_wait4+0x2c/0x40 kernel/compat.c:536
 [<ffffffff81115315>] sys32_waitpid+0x25/0x30 arch/x86/ia32/sys_ia32.c:172
 [<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
 [<ffffffff838c1baa>] sysenter_flags_fixed+0xd/0x17
Code: 00 00 00 e8 db a8 49 ff 49 63 c6 48 c1 e0 03 49 89 c7 eb 12 e8 ca a8 49 ff 4d 8b 24 24 4d 85 e4 0f 84 8a 00 00 00 e8 b8 a8 49 ff <41> 39 5c 24 08 75 e2 e8 ac a8 49 ff 45 3b 74 24 0c 75 d6 e8 a0 
RIP  [<ffffffff81eb6938>] find_stack lib/stackdepot.c:174 [inline]
RIP  [<ffffffff81eb6938>] depot_save_stack+0x168/0x610 lib/stackdepot.c:225
 RSP <ffff8801d844f460>
CR2: 0000000c0300030a
---[ end trace 83645e8ac2294e8b ]---