------------[ cut here ]------------
WARNING: CPU: 0 PID: 10418 at net/sched/sch_taprio.c:1043 taprio_get_start_time net/sched/sch_taprio.c:1043 [inline]
WARNING: CPU: 0 PID: 10418 at net/sched/sch_taprio.c:1043 taprio_change+0x3107/0x3fe0 net/sched/sch_taprio.c:1594
Modules linked in:
CPU: 0 PID: 10418 Comm: syz-executor.1 Not tainted 5.12.0-rc7-next-20210415-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:taprio_get_start_time net/sched/sch_taprio.c:1043 [inline]
RIP: 0010:taprio_change+0x3107/0x3fe0 net/sched/sch_taprio.c:1594
Code: 8b 44 24 18 41 bc ea ff ff ff 48 c7 00 40 d9 6c 8a e8 3d cb 39 fa 48 8b 7c 24 08 e8 33 5d d9 01 e9 09 d9 ff ff e8 29 cb 39 fa <0f> 0b 48 c7 c7 e0 d8 6c 8a e8 db b1 06 00 48 83 7c 24 18 00 74 2e
RSP: 0018:ffffc90017a471e8 EFLAGS: 00010216
RAX: 000000000000266a RBX: 0000000000000000 RCX: ffffc9000b47b000
RDX: 0000000000040000 RSI: ffffffff873aad17 RDI: 0000000000000003
RBP: 167749f2a2768c05 R08: 0000000000000000 R09: ffffffff8fdeb97f
R10: ffffffff873a9c9e R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
FS:  00007f15a7e14700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000052f690 CR3: 0000000016433000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 taprio_init+0x52e/0x670 net/sched/sch_taprio.c:1753
 qdisc_create+0x475/0x1320 net/sched/sch_api.c:1247
 tc_modify_qdisc+0x4c8/0x1a60 net/sched/sch_api.c:1663
 rtnetlink_rcv_msg+0x413/0xaf0 net/core/rtnetlink.c:5562
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x84c/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f15a7e14188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffe7f49383f R14: 00007f15a7e14300 R15: 0000000000022000