netlink: 4 bytes leftover after parsing attributes in process `syz-executor929'.
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
CPU: 0 PID: 8544 Comm: syz-executor929 Not tainted 5.2.0+ #35
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nla_len /./include/net/netlink.h:1084 [inline]
RIP: 0010:nla_parse_nested_deprecated /./include/net/netlink.h:1167 [inline]
RIP: 0010:tcf_ife_init+0xff/0x1630 /net/sched/act_ife.c:484
Code: 00 74 08 4c 89 ef e8 d0 17 8e fb 48 8d 9c 24 a0 00 00 00 48 c7 84 24 50 01 00 00 00 00 00 00 4d 8d 6e 04 4c 89 f0 48 c1 e8 03 <42> 8a 04 38 84 c0 0f 85 ca 12 00 00 41 0f b7 0e 83 c1 fc 48 89 df
RSP: 0018:ffff888088166c00 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888088166ca0 RCX: 0000000088166b03
RDX: ffff888092d0ced8 RSI: ffffffff88cd6340 RDI: 0000000000000282
RBP: ffff888088166dd8 R08: dffffc0000000000 R09: fffffbfff11fba3d
R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff1101102cdaa
R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000555556a58880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000090682000 CR4: 00000000001406f0
Call Trace:
 tcf_action_init_1+0x786/0xd40 /net/sched/act_api.c:915
 tcf_action_init+0x183/0x490 /net/sched/act_api.c:971
 tcf_action_add /net/sched/act_api.c:1356 [inline]
 tc_ctl_action+0x3ad/0x920 /net/sched/act_api.c:1408
 rtnetlink_rcv_msg+0xb19/0xe50 /net/core/rtnetlink.c:5223
 netlink_rcv_skb+0x1f0/0x460 /net/netlink/af_netlink.c:2477
 rtnetlink_rcv+0x1c/0x20 /net/core/rtnetlink.c:5241
 netlink_unicast_kernel /net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x809/0x9a0 /net/netlink/af_netlink.c:1328
 netlink_sendmsg+0xa70/0xd30 /net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec /net/socket.c:633 [inline]
 sock_sendmsg /net/socket.c:653 [inline]
 ___sys_sendmsg+0x66b/0x9a0 /net/socket.c:2307
 __sys_sendmsg /net/socket.c:2352 [inline]
 __do_sys_sendmsg /net/socket.c:2361 [inline]
 __se_sys_sendmsg /net/socket.c:2359 [inline]
 __x64_sys_sendmsg+0x1cf/0x290 /net/socket.c:2359
 do_syscall_64+0xfe/0x140 /arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4401d9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc921a6e78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60
R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 48e79de6c508ddb2 ]---
RIP: 0010:nla_len /./include/net/netlink.h:1084 [inline]
RIP: 0010:nla_parse_nested_deprecated /./include/net/netlink.h:1167 [inline]
RIP: 0010:tcf_ife_init+0xff/0x1630 /net/sched/act_ife.c:484
Code: 00 74 08 4c 89 ef e8 d0 17 8e fb 48 8d 9c 24 a0 00 00 00 48 c7 84 24 50 01 00 00 00 00 00 00 4d 8d 6e 04 4c 89 f0 48 c1 e8 03 <42> 8a 04 38 84 c0 0f 85 ca 12 00 00 41 0f b7 0e 83 c1 fc 48 89 df
RSP: 0018:ffff888088166c00 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888088166ca0 RCX: 0000000088166b03
RDX: ffff888092d0ced8 RSI: ffffffff88cd6340 RDI: 0000000000000282
RBP: ffff888088166dd8 R08: dffffc0000000000 R09: fffffbfff11fba3d
R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff1101102cdaa
R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000555556a58880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000090682000 CR4: 00000000001406f0