------------[ cut here ]------------ WARNING: CPU: 1 PID: 14875 at net/sched/sch_taprio.c:999 taprio_get_start_time net/sched/sch_taprio.c:999 [inline] WARNING: CPU: 1 PID: 14875 at net/sched/sch_taprio.c:999 taprio_change+0x3119/0x3fe0 net/sched/sch_taprio.c:1550 Modules linked in: CPU: 1 PID: 14875 Comm: syz-executor.2 Not tainted 5.12.0-rc8-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 fb 5e 43 fa 48 8b 7c 24 08 e8 a1 10 d5 01 e9 10 d9 ff ff e8 e7 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:ffffc900096671d0 EFLAGS: 00010212 RAX: 0000000000002299 RBX: 0000000000000000 RCX: ffffc9000d706000 RDX: 0000000000040000 RSI: ffffffff87309669 RDI: 0000000000000003 RBP: 1678bbdb99dc55bc R08: 0000000000000000 R09: ffffffff8fa9a977 R10: ffffffff87308593 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f55c1b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000008198000 CR3: 000000003052b000 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_32_irqs_on arch/x86/entry/common.c:77 [inline] __do_fast_syscall_32+0x56/0x90 arch/x86/entry/common.c:140 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:165 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc7549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f55c15fc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000200007c0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000