divide error: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 9571 Comm: syz-executor.0 Not tainted 4.14.244-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88809d8520c0 task.stack: ffff88804bd80000
RIP: 0010:netem_enqueue+0x1364/0x2df0 net/sched/sch_netem.c:511
RSP: 0018:ffff88804bd87750 EFLAGS: 00010246
RAX: 00000000a44ee03e RBX: ffff88809cf0dd40 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88809dc82340 RDI: ffff88809dc823c4
RBP: 0000000000000008 R08: ffff88809dc82418 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff88809e754b20 R14: 0000000000000000 R15: ffff88809e754900
FS:  00007fbfba27a700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbfba27a718 CR3: 000000009e42a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 netem_enqueue+0x889/0x2df0 net/sched/sch_netem.c:475
 __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:1288 [inline]
 netlink_unicast+0x485/0x610 net/netlink/af_netlink.c:1315
 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1880
 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: 0033:0x4665e9
RSP: 002b:00007fbfba27a188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000007
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007ffd071d62cf R14: 00007fbfba27a300 R15: 0000000000022000
Code: 4c 89 44 24 20 89 4c 24 18 89 44 24 10 e8 35 12 a4 fb 4c 8b 44 24 20 8b 4c 24 18 8b 44 24 10 48 8b 34 24 31 d2 2b 8e 84 00 00 00 <f7> f1 48 b8 00 00 00 00 00 fc ff df 48 01 d3 48 89 d9 48 c1 e9 
RIP: netem_enqueue+0x1364/0x2df0 net/sched/sch_netem.c:511 RSP: ffff88804bd87750
---[ end trace c37869336db3ca02 ]---
----------------
Code disassembly (best guess):
   0:	4c 89 44 24 20       	mov    %r8,0x20(%rsp)
   5:	89 4c 24 18          	mov    %ecx,0x18(%rsp)
   9:	89 44 24 10          	mov    %eax,0x10(%rsp)
   d:	e8 35 12 a4 fb       	callq  0xfba41247
  12:	4c 8b 44 24 20       	mov    0x20(%rsp),%r8
  17:	8b 4c 24 18          	mov    0x18(%rsp),%ecx
  1b:	8b 44 24 10          	mov    0x10(%rsp),%eax
  1f:	48 8b 34 24          	mov    (%rsp),%rsi
  23:	31 d2                	xor    %edx,%edx
  25:	2b 8e 84 00 00 00    	sub    0x84(%rsi),%ecx
* 2b:	f7 f1                	div    %ecx <-- trapping instruction
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df
  37:	48 01 d3             	add    %rdx,%rbx
  3a:	48 89 d9             	mov    %rbx,%rcx
  3d:	48                   	rex.W
  3e:	c1                   	.byte 0xc1
  3f:	e9                   	.byte 0xe9