------------[ cut here ]------------
WARNING: CPU: 1 PID: 30888 at net/sched/sch_taprio.c:999 taprio_get_start_time net/sched/sch_taprio.c:999 [inline]
WARNING: CPU: 1 PID: 30888 at net/sched/sch_taprio.c:999 taprio_change+0x3119/0x3fe0 net/sched/sch_taprio.c:1550
Modules linked in:
CPU: 1 PID: 30888 Comm: syz-executor.2 Not tainted 5.12.0-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:999 [inline]
RIP: 0010:taprio_change+0x3119/0x3fe0 net/sched/sch_taprio.c:1550
Code: 8b 44 24 18 41 bc ea ff ff ff 48 c7 00 40 fa 6a 8a e8 eb 5e 43 fa 48 8b 7c 24 08 e8 41 10 d5 01 e9 10 d9 ff ff e8 d7 5e 43 fa <0f> 0b 48 c7 c7 e0 f9 6a 8a e8 19 a5 06 00 48 83 7c 24 18 00 74 2e
RSP: 0018:ffffc9000170f1f0 EFLAGS: 00010212
RAX: 0000000000001009 RBX: 0000000000000000 RCX: ffffc9000dc6f000
RDX: 0000000000040000 RSI: ffffffff873096a9 RDI: 0000000000000003
RBP: 167962d30de8ab01 R08: 0000000000000000 R09: ffffffff8fa9a977
R10: ffffffff873085d3 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f0864e5c700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31c22000 CR3: 0000000012aae000 CR4: 0000000000350ee0
Call Trace:
 taprio_init+0x52e/0x670 net/sched/sch_taprio.c:1709
 qdisc_create+0x475/0x12f0 net/sched/sch_api.c:1247
 tc_modify_qdisc+0x4c8/0x1a50 net/sched/sch_api.c:1663
 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5553
 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+0x856/0xd90 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+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
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:00007f0864e5c188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000005
RBP: 00000000004bfbb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffc60fc1d2f R14: 00007f0864e5c300 R15: 0000000000022000