hrtimer: interrupt took 164920 ns watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor327:6085] Modules linked in: irq event stamp: 736657 hardirqs last enabled at (736656): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (736656): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (736657): [] __el1_irq arch/arm64/kernel/entry-common.c:499 [inline] hardirqs last disabled at (736657): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:517 softirqs last enabled at (688): [] dev_reset_queue+0x184/0x1fc softirqs last disabled at (689): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 CPU: 1 PID: 6085 Comm: syz-executor327 Not tainted 6.5.0-rc7-syzkaller-gfe4469582053 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : taprio_dequeue_from_txq+0xdc/0x834 net/sched/sch_taprio.c:728 lr : taprio_dequeue_from_txq+0x40/0x834 net/sched/sch_taprio.c:714 sp : ffff800080017be0 x29: ffff800080017bf0 x28: 0000000000000001 x27: 0000000000000002 x26: dfff800000000000 x25: ffff0000c6fcc000 x24: ffff0000d32432d0 x23: 0000000000008a27 x22: ffff0000e5a08400 x21: 0000000000000000 x20: ffff0000ca4a8800 x19: ffff0000d3243000 x18: ffff800097096760 x17: ffff80012620c000 x16: ffff800080516cc4 x15: 0000000000000102 x14: ffff80008e0a05e8 x13: dfff800000000000 x12: 000000007913f8ca x11: 0000000000000102 x10: 0000000000000100 x9 : 0000000000000000 x8 : 0000000000000000 x7 : ffff800088a8f76c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000008a27 x2 : ffff0000e5a08400 x1 : 000000000000000b x0 : 0000000000000000 Call trace: taprio_dequeue_from_txq+0xdc/0x834 net/sched/sch_taprio.c:728 taprio_dequeue_tc_priority+0x184/0x64c net/sched/sch_taprio.c:798 taprio_dequeue+0x174/0x508 dequeue_skb net/sched/sch_generic.c:292 [inline] qdisc_restart net/sched/sch_generic.c:397 [inline] __qdisc_run+0x1fc/0x2358 net/sched/sch_generic.c:415 qdisc_run+0xc4/0x23c include/net/pkt_sched.h:125 net_tx_action+0x6f8/0x8ac net/core/dev.c:5049 __do_softirq+0x2d0/0xd54 kernel/softirq.c:553 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:882 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 do_softirq+0xb8/0x170 kernel/softirq.c:454 __local_bh_enable_ip+0x2b0/0x4ac kernel/softirq.c:381 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 dev_reset_queue+0x184/0x1fc netdev_for_each_tx_queue include/linux/netdevice.h:2517 [inline] dev_deactivate_many+0x540/0xa8c net/sched/sch_generic.c:1359 dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1382 qdisc_graft+0x70c/0x121c net/sched/sch_api.c:1108 tc_modify_qdisc+0xccc/0x1840 net/sched/sch_api.c:1731 rtnetlink_rcv_msg+0x748/0xdc0 net/core/rtnetlink.c:6428 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2549 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6446 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg net/socket.c:748 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2494 ___sys_sendmsg net/socket.c:2548 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2577 __do_sys_sendmsg net/socket.c:2586 [inline] __se_sys_sendmsg net/socket.c:2584 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2584 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x58/0x16c arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591