syzbot

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WARNING: CPU: 0 PID: 4240 at net/sched/sch_taprio.c:1020 taprio_get_start_time+0x162/0x190
Modules linked in:
CPU: 0 PID: 4240 Comm: syz-executor396 Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:taprio_get_start_time+0x162/0x190 net/sched/sch_taprio.c:1020
Code: 03 42 80 3c 30 00 74 08 48 89 ef e8 88 29 08 f9 48 89 5d 00 31 c0 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 ae d0 b0 f8 <0f> 0b b8 f2 ff ff ff eb e3 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 0b
RSP: 0018:ffffc90003c96dc0 EFLAGS: 00010293
RAX: ffffffff88d9c622 RBX: 0000000000000001 RCX: ffff88807cd71dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88801ded62d4 R08: ffffffff88d9c5cf R09: fffffbfff2256c66
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000d1f339fe5 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000555565f1d380(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000000300 CR3: 00000000285d1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 taprio_change+0x4319/0x5600 net/sched/sch_taprio.c:1655
 qdisc_create+0x8a1/0x1220 net/sched/sch_api.c:1319
 tc_modify_qdisc+0xb6d/0x1e60
 rtnetlink_rcv_msg+0x822/0x1000 net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2493
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x7e2/0x970 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1859
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5d3/0x9a0 net/socket.c:2519
 ___sys_sendmsg net/socket.c:2573 [inline]
 __sys_sendmsg+0x2a9/0x390 net/socket.c:2602
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f85ecda4669
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd332eff68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffd332f0138 RCX: 00007f85ecda4669
RDX: 0000000000000000 RSI: 00004000000007c0 RDI: 0000000000000004
RBP: 00007f85ece17610 R08: 0000000000000000 R09: 00007ffd332f0138
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd332f0128 R14: 0000000000000001 R15: 0000000000000001
 </TASK>