kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN PTI
Modules linked in: sch_htb sch_red sch_sfb sch_tbf sch_cbq sch_sfq iptable_security iptable_raw iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter binfmt_misc pppoe pppox af_key can vhost_net tun tap vhost_vsock vmw_vsock_virtio_transport_common vhost vsock hci_vhci bluetooth ecdh_generic rfkill uinput ppp_generic slhc loop cuse fuse sunrpc joydev sg i2c_piix4 pcspkr ip_tables xfs libcrc32c sd_mod sr_mod cirrus cdrom drm_kms_helper ata_generic pata_acpi syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm virtio_net virtio_pci i2c_core virtio_ring ata_piix virtio libata serio_raw floppy dm_mirror dm_region_hash dm_log dm_mod
CPU: 0 PID: 28699 Comm: syz-executor5 Not tainted 4.17.0-rc4.kcov #1
Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
RIP: 0010:qdisc_hash_add+0x26/0xa0 net/sched/sch_api.c:282
RSP: 0018:ffff8800589cf470 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff824ad971
RDX: 0000000000000007 RSI: ffffc9000ce9f000 RDI: 000000000000003c
RBP: 0000000000000001 R08: ffffed000b139ea2 R09: ffff8800589cf4f0
R10: ffff8800589cf50f R11: ffffed000b139ea2 R12: ffff880054019fc0
R13: ffff880054019fb4 R14: ffff88005c0af600 R15: ffff880054019fb0
FS:  00007fa6edcb1700(0000) GS:ffff88005ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000740 CR3: 000000000fc16000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 red_change+0x2d2/0xed0 [sch_red]
 qdisc_create+0x57e/0xef0 net/sched/sch_api.c:1148
 tc_modify_qdisc+0x47f/0x14e0 net/sched/sch_api.c:1550
 rtnetlink_rcv_msg+0x6a8/0x920 net/core/rtnetlink.c:4646
 netlink_rcv_skb+0x2a2/0x3c0 net/netlink/af_netlink.c:2448
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x511/0x740 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0x825/0xc30 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xc5/0x100 net/socket.c:639
 ___sys_sendmsg+0x778/0x8e0 net/socket.c:2117
 __sys_sendmsg+0xf5/0x1b0 net/socket.c:2155
 do_syscall_64+0xbd/0x3b0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x450869
RSP: 002b:00007fa6edcb0c48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa6edcb16b4 RCX: 0000000000450869
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000008778 R14: 0000000000702838 R15: 00007fa6edcb1700
Code: e9 0b fe ff ff 0f 1f 44 00 00 55 53 48 89 fb 89 f5 e8 3f 07 f3 fe 48 8d 7b 3c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 51 
RIP: qdisc_hash_add+0x26/0xa0 net/sched/sch_api.c:282 RSP: ffff8800589cf470
---[ end trace 835a020135111b7f ]---