syzbot

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WARNING: CPU: 1 PID: 4406 at net/sched/sch_taprio.c:1020 taprio_get_start_time+0x139/0x160 net/sched/sch_taprio.c:1020
Modules linked in:
CPU: 1 PID: 4406 Comm: syz.0.16 Not tainted 6.1.142-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:taprio_get_start_time+0x139/0x160 net/sched/sch_taprio.c:1020
Code: 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 6c f1 85 f9 4c 89 23 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 27 75 34 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:ffffc90003346d88 EFLAGS: 00010293
RAX: ffffffff884c6259 RBX: ffffc90003346e98 RCX: ffff88807b7c8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff211726b
R10: fffffbfff211726b R11: 1ffffffff211726a R12: 184dc4a844392f5d
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055558f057500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000600 CR3: 0000000023bc3000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 taprio_change+0x3daa/0x50f0 net/sched/sch_taprio.c:1655
 qdisc_create+0x7cb/0x1090 net/sched/sch_api.c:1319
 tc_modify_qdisc+0xb0f/0x1be0 net/sched/sch_api.c:-1
 rtnetlink_rcv_msg+0x79b/0xed0 net/core/rtnetlink.c:6153
 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2493
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x74c/0x8c0 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x89e/0xbc0 net/netlink/af_netlink.c:1859
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x59b/0x970 net/socket.c:2519
 ___sys_sendmsg+0x21c/0x290 net/socket.c:2573
 __sys_sendmsg net/socket.c:2602 [inline]
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg+0x19e/0x270 net/socket.c:2609
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ffa05f8e929
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe3830e1d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffa061b5fa0 RCX: 00007ffa05f8e929
RDX: 0000000000000000 RSI: 00002000000007c0 RDI: 0000000000000004
RBP: 00007ffa06010b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffa061b5fa0 R14: 00007ffa061b5fa0 R15: 0000000000000003
 </TASK>