syzbot

netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
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WARNING: CPU: 1 PID: 8396 at net/sched/sch_taprio.c:999 taprio_get_start_time net/sched/sch_taprio.c:999 [inline]
WARNING: CPU: 1 PID: 8396 at net/sched/sch_taprio.c:999 taprio_change+0x3119/0x3fe0 net/sched/sch_taprio.c:1550
Modules linked in:
CPU: 1 PID: 8396 Comm: syz-executor420 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 00 75 6b 8a e8 0b ce 3d fa 48 8b 7c 24 08 e8 41 a1 d5 01 e9 10 d9 ff ff e8 f7 cd 3d fa <0f> 0b 48 c7 c7 a0 74 6b 8a e8 39 a5 06 00 48 83 7c 24 18 00 74 2e
RSP: 0018:ffffc900019f71e8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880358a8340 RSI: ffffffff8735c4d9 RDI: 0000000000000003
RBP: 167b39cca7849ed3 R08: 0000000000000000 R09: ffffffff901b797f
R10: ffffffff8735b403 R11: 1ffffffff1f4253d R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000000000119b300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8b417cc000 CR3: 0000000015196000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4434b9
Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe01232a98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffe01232aa8 RCX: 00000000004434b9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe01232ab0
R13: 00007ffe01232ad0 R14: 00000000004b8018 R15: 00000000004004b8