netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
kobject: 'kvm' (ffff8880a6eb3390): kobject_uevent_env
kobject: 'kvm' (ffff8880a6eb3390): fill_kobj_path: path = '/devices/virtual/misc/kvm'
Modules linked in:
CPU: 1 PID: 11699 Comm: syz-executor.2 Not tainted 4.14.134 #30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888062fe2740 task.stack: ffff888055b30000
RIP: 0010:nla_parse_nested include/net/netlink.h:765 [inline]
RIP: 0010:tcf_ife_init+0x1b3/0x1310 net/sched/act_ife.c:462
RSP: 0018:ffff888055b37230 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1100c5fc5f6
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000282
RBP: ffff888055b37378 R08: ffff888062fe2740 R09: 0000000000000001
R10: 0000000000000000 R11: ffff888062fe2740 R12: 000000000000001f
R13: ffff8880944ec4c0 R14: ffff888055b37350 R15: 0000000000000000
FS:  00007ff63fc19700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000094a92000 CR4: 00000000001426e0
Call Trace:
 tcf_action_init_1+0x53c/0xaa0 net/sched/act_api.c:682
 tcf_action_init+0x2ab/0x480 net/sched/act_api.c:751
 tcf_action_add net/sched/act_api.c:1078 [inline]
 tc_ctl_action+0x32f/0x556 net/sched/act_api.c:1126
 rtnetlink_rcv_msg+0x3eb/0xb70 net/core/rtnetlink.c:4285
 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4297
 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline]
 netlink_unicast+0x45d/0x780 net/netlink/af_netlink.c:1312
 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xce/0x110 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xb9/0x140 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2103
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459829
RSP: 002b:00007ff63fc18c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff63fc196d4
R13: 00000000004c773c R14: 00000000004dce48 R15: 00000000ffffffff
Code: 75 fc 48 c7 c2 bb b1 e6 84 be 01 00 00 00 48 c7 c7 a0 f5 78 87 e8 ee 50 61 fc 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 
RIP: nla_parse_nested include/net/netlink.h:765 [inline] RSP: ffff888055b37230
RIP: tcf_ife_init+0x1b3/0x1310 net/sched/act_ife.c:462 RSP: ffff888055b37230
---[ end trace ad6e18dfc23a5e75 ]---