watchdog: BUG: soft lockup - CPU#1 stuck for 45s! [syz.4.314:5305] Modules linked in: irq event stamp: 1589 hardirqs last enabled at (1588): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (1588): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (1589): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (1589): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (1336): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1576): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (1576): [] taprio_change+0x29d4/0x3670 net/sched/sch_taprio.c:1636 CPU: 1 PID: 5305 Comm: syz.4.314 Not tainted 6.1.98-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] pc : _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] lr : _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 sp : ffff80001e0a6ac0 x29: ffff80001e0a6ac0 x28: ffff0000edaffe00 x27: ffff0000da548000 x26: ffff0000c9658039 x25: ffff0000da5480f0 x24: 0000001efaa0da7a x23: 0000000000000000 x22: ffff700003c14d78 x21: ffff0000da5482e8 x20: ffff0000da5482e8 x19: 0000000000000000 x18: ffff80001e0a6660 x17: ffff8000188f0000 x16: ffff80000830560c x15: ffff8000183d5f80 x14: ffff0000d4a02638 x13: dfff800000000000 x12: 0000000000040000 x11: 0000000000009c12 x10: 0000000000000003 x9 : 0000000000000080 x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000008 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff8000122cc6e0 x0 : ffff80019ebc5000 Call trace: arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x58/0xac kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] taprio_change+0x2d48/0x3670 net/sched/sch_taprio.c:1686 taprio_init+0x4a8/0x530 net/sched/sch_taprio.c:1819 qdisc_create+0x70c/0xe6c net/sched/sch_api.c:1314 tc_modify_qdisc+0xa14/0x186c rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6121 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2508 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6139 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1352 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2597 __do_sys_sendmsg net/socket.c:2606 [inline] __se_sys_sendmsg net/socket.c:2604 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2604 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585