------------[ cut here ]------------
WARNING: CPU: 0 PID: 4424 at net/sched/sch_taprio.c:1026 taprio_get_start_time+0x139/0x160 net/sched/sch_taprio.c:1026
Modules linked in:
CPU: 0 PID: 4424 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:taprio_get_start_time+0x139/0x160 net/sched/sch_taprio.c:1026
Code: 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 9c 0e 6c f9 4c 89 23 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 47 e1 1a f9 <0f> 0b b8 f2 ff ff ff eb e7 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc90003846d68 EFLAGS: 00010293
RAX: ffffffff886752a9 RBX: ffffc90003846e78 RCX: ffff88807be0da00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000002 R08: ffffffff90b0f32f R09: 1ffffffff2161e65
R10: dffffc0000000000 R11: fffffbfff2161e66 R12: 18c603b957f93cae
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055557c4d3500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000012c0 CR3: 0000000019eab000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 taprio_change+0x3f99/0x5390 net/sched/sch_taprio.c:1661
 qdisc_create+0x7ef/0x10c0 net/sched/sch_api.c:1305
 tc_modify_qdisc+0xb43/0x1de0 net/sched/sch_api.c:-1
 rtnetlink_rcv_msg+0x863/0xfb0 net/core/rtnetlink.c:6166
 netlink_rcv_skb+0x1ef/0x440 net/netlink/af_netlink.c:2516
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x7ad/0x920 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8ad/0xbd0 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5ed/0x9a0 net/socket.c:2519
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2573
 __sys_sendmsg net/socket.c:2602 [inline]
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg+0x1c3/0x2b0 net/socket.c:2609
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f419779de99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdd839d668 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4197a25fa0 RCX: 00007f419779de99
RDX: 0000000000008010 RSI: 00002000000012c0 RDI: 0000000000000007
RBP: 00007f4197833eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4197a25fac R14: 00007f4197a25fa0 R15: 00007f4197a25fa0
 </TASK>