ptrace attach of "/root/syz-executor1"[3711] was attempted by "/root/syz-executor1"[16418]
ptrace attach of "/root/syz-executor1"[3711] was attempted by "/root/syz-executor1"[16433]
device syz2 entered promiscuous mode
------------[ cut here ]------------
unexpected usercopy with bad or missing whitelist from skbuff_head_cache offset 64 size 5
WARNING: CPU: 0 PID: 16436 at mm/slab.c:4425 __check_heap_object+0xc7/0xd0 mm/slab.c:4424
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 16436 Comm: syz-executor2 Not tainted 4.15.0-rc6-mm1+ #50
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+0xc7/0xd0 mm/slab.c:4424
RSP: 0018:ffff8801d702f820 EFLAGS: 00010286
RAX: dffffc0000000008 RBX: ffffea00075266c0 RCX: ffffffff814c355e
RDX: 00000000000003eb RSI: ffffc900046c3000 RDI: 0000000000000212
RBP: ffff8801d702f828 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000000 R12: ffff8801d499b2c0
R13: 0000000000000005 R14: 0000000000000001 R15: ffffea00075266c0
 check_heap_object mm/usercopy.c:222 [inline]
 __check_object_size+0x132/0x340 mm/usercopy.c:248
 check_object_size include/linux/thread_info.h:112 [inline]
 check_copy_size include/linux/thread_info.h:143 [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_recvmsg+0xcb/0x170 net/socket.c:2222
 SYSC_recvmsg net/socket.c:2234 [inline]
 SyS_recvmsg+0x2d/0x50 net/socket.c:2229
 entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x452ac9
RSP: 002b:00007f60b991dc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000000002000 RSI: 0000000020683ec4 RDI: 0000000000000015
RBP: 00000000000005f7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6fc8
R13: 00000000ffffffff R14: 00007f60b991e6d4 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..