binder: 5418:5433 got reply transaction with bad transaction stack, transaction 9 has target 5418:0
binder: 5418:5433 transaction failed 29201/-71, size 24-8 line 2775
device syz0 entered promiscuous mode
------------[ cut here ]------------
unexpected usercopy exposure with bad or missing whitelist with SLAB object 'skbuff_head_cache' (offset 64, size 16)
WARNING: CPU: 0 PID: 5436 at mm/slab.c:4426 __check_heap_object+0xef/0x100 mm/slab.c:4424
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 5436 Comm: syz-executor0 Not tainted 4.15.0-rc6-next-20180103+ #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x137/0x198 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x249/0x290 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:__check_heap_object+0xef/0x100 mm/slab.c:4424
RSP: 0018:ffff8801c18576a0 EFLAGS: 00010282
RAX: dffffc0000000008 RBX: 0000000000000010 RCX: ffffffff814c349e
RDX: 000000000000053d RSI: ffffc900018e8000 RDI: 0000000000000212
RBP: ffff8801c18576a8 R08: ffffffff85f38238 R09: 0000000000000000
R10: 0000000000000866 R11: 0000000000000000 R12: ffff8801cdb3de80
R13: 0000000000000001 R14: ffffea000736cf40 R15: ffff8801cdb3de90
 check_heap_object mm/usercopy.c:234 [inline]
 __check_object_size+0x1db/0x380 mm/usercopy.c:257
 check_object_size include/linux/thread_info.h:112 [inline]
 check_copy_size include/linux/thread_info.h:145 [inline]
 copy_to_user include/linux/uaccess.h:154 [inline]
 put_cmsg+0x1af/0x340 net/core/scm.c:242
 sock_recv_errqueue+0x200/0x3e0 net/core/sock.c:2913
 packet_recvmsg+0x8e1/0x1060 net/packet/af_packet.c:3296
 sock_recvmsg_nosec net/socket.c:801 [inline]
 sock_recvmsg+0xc9/0x110 net/socket.c:808
 ___sys_recvmsg+0x272/0x590 net/socket.c:2177
 __sys_recvmmsg+0x243/0x6d0 net/socket.c:2285
 SYSC_recvmmsg net/socket.c:2366 [inline]
 SyS_recvmmsg+0xc4/0x160 net/socket.c:2350
 entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x452ac9
RSP: 002b:00007f155c534c58 EFLAGS: 00000212 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000000000005 RSI: 0000000020a01ed4 RDI: 0000000000000015
RBP: 000000000000034b R08: 0000000020af2ff0 R09: 0000000000000000
R10: 0000000000002000 R11: 0000000000000212 R12: 00000000006f2fa8
R13: 00000000ffffffff R14: 00007f155c5356d4 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..