------------[ cut here ]------------ WARNING: CPU: 0 PID: 20066 at net/sched/sch_taprio.c:1043 taprio_get_start_time net/sched/sch_taprio.c:1043 [inline] WARNING: CPU: 0 PID: 20066 at net/sched/sch_taprio.c:1043 taprio_change+0x3119/0x3fe0 net/sched/sch_taprio.c:1594 Modules linked in: CPU: 0 PID: 20066 Comm: syz-executor.4 Not tainted 5.12.0-rc7-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:1043 [inline] RIP: 0010:taprio_change+0x3119/0x3fe0 net/sched/sch_taprio.c:1594 Code: 8b 44 24 18 41 bc ea ff ff ff 48 c7 00 80 57 6b 8a e8 fb 22 41 fa 48 8b 7c 24 08 e8 51 14 d9 01 e9 10 d9 ff ff e8 e7 22 41 fa <0f> 0b 48 c7 c7 20 57 6b 8a e8 d9 a5 06 00 48 83 7c 24 18 00 74 2e RSP: 0018:ffffc90017da71f0 EFLAGS: 00010216 RAX: 0000000000000b75 RBX: 0000000000000000 RCX: ffffc9001207a000 RDX: 0000000000040000 RSI: ffffffff8732d379 RDI: 0000000000000003 RBP: 00000071e9aafd67 R08: 0000000000000000 R09: ffffffff8fae297f R10: ffffffff8732c2a3 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f1e4d3d0700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32f21000 CR3: 000000001de30000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: taprio_init+0x52e/0x670 net/sched/sch_taprio.c:1753 qdisc_create+0x475/0x1310 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:5562 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+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1e4d3d0188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffc72004e5f R14: 00007f1e4d3d0300 R15: 0000000000022000