nla_parse: 11 callbacks suppressed
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.4'.
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
Modules linked in:
CPU: 1 PID: 10814 Comm: syz-executor.0 Not tainted 4.14.257-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88809bfb2040 task.stack: ffff88805b308000
RIP: 0010:dequeue_head net/sched/sch_fq_codel.c:125 [inline]
RIP: 0010:fq_codel_drop net/sched/sch_fq_codel.c:173 [inline]
RIP: 0010:fq_codel_enqueue+0x7ce/0xfc0 net/sched/sch_fq_codel.c:235
RSP: 0018:ffff88805b30f790 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90005c8c000
RDX: 0000000000000000 RSI: ffffffff85dd1306 RDI: ffff8880b31fdce8
RBP: ffff8880b31fdb00 R08: ffff88823fff7058 R09: ffff88823fff704f
R10: ffff88823fff7057 R11: 000000265efa8834 R12: ffff88805b30f908
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888054941640
FS:  00007fd4023c9700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ed22000 CR3: 00000000a8c1d000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __dev_xmit_skb net/core/dev.c:3225 [inline]
 __dev_queue_xmit+0x121d/0x2480 net/core/dev.c:3489
 __netlink_deliver_tap_skb net/netlink/af_netlink.c:273 [inline]
 __netlink_deliver_tap net/netlink/af_netlink.c:291 [inline]
 netlink_deliver_tap+0x60c/0x7d0 net/netlink/af_netlink.c:302
 netlink_deliver_tap_kernel net/netlink/af_netlink.c:311 [inline]
 netlink_unicast_kernel net/netlink/af_netlink.c:1293 [inline]
 netlink_unicast+0x485/0x610 net/netlink/af_netlink.c:1320
 netlink_sendmsg+0x638/0xb90 net/netlink/af_netlink.c:1886
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fd403a53e99
RSP: 002b:00007fd4023c9168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd403b66f60 RCX: 00007fd403a53e99
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000006
RBP: 00007fd403aae031 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd26463a2f R14: 00007fd4023c9300 R15: 0000000000022000
Code: 09 28 78 fb 3b 6c 24 08 0f 83 bb 00 00 00 e8 fa 27 78 fb 48 8b 44 24 10 80 38 00 0f 85 05 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 d9 05 00 00 48 8b 10 48 8d 78 28 49 89 17 
RIP: dequeue_head net/sched/sch_fq_codel.c:125 [inline] RSP: ffff88805b30f790
RIP: fq_codel_drop net/sched/sch_fq_codel.c:173 [inline] RSP: ffff88805b30f790
RIP: fq_codel_enqueue+0x7ce/0xfc0 net/sched/sch_fq_codel.c:235 RSP: ffff88805b30f790
---[ end trace 8bb66a4881cba003 ]---
----------------
Code disassembly (best guess):
   0:	09 28                	or     %ebp,(%rax)
   2:	78 fb                	js     0xffffffff
   4:	3b 6c 24 08          	cmp    0x8(%rsp),%ebp
   8:	0f 83 bb 00 00 00    	jae    0xc9
   e:	e8 fa 27 78 fb       	callq  0xfb78280d
  13:	48 8b 44 24 10       	mov    0x10(%rsp),%rax
  18:	80 38 00             	cmpb   $0x0,(%rax)
  1b:	0f 85 05 06 00 00    	jne    0x626
  21:	49 8b 07             	mov    (%r15),%rax
  24:	48 89 c2             	mov    %rax,%rdx
  27:	48 c1 ea 03          	shr    $0x3,%rdx
* 2b:	42 80 3c 2a 00       	cmpb   $0x0,(%rdx,%r13,1) <-- trapping instruction
  30:	0f 85 d9 05 00 00    	jne    0x60f
  36:	48 8b 10             	mov    (%rax),%rdx
  39:	48 8d 78 28          	lea    0x28(%rax),%rdi
  3d:	49 89 17             	mov    %rdx,(%r15)