watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [swapper/0:0] Modules linked in: irq event stamp: 59629 hardirqs last enabled at (59628): [] __trace_hardirqs_on+0x18/0x20 arch/riscv/kernel/trace_irq.c:19 hardirqs last disabled at (59629): [] __trace_hardirqs_off+0x18/0x20 arch/riscv/kernel/trace_irq.c:25 softirqs last enabled at (59378): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (59378): [] __do_softirq+0x640/0x930 kernel/softirq.c:600 softirqs last disabled at (59385): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (59385): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (59385): [] __irq_exit_rcu+0x154/0x1ea kernel/softirq.c:650 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-syzkaller-13662-geb67d239f3aa #0 Hardware name: riscv-virtio,qemu (DT) epc : arch_static_branch arch/riscv/include/asm/jump_label.h:20 [inline] epc : kfence_alloc include/linux/kfence.h:120 [inline] epc : slab_alloc_node mm/slub.c:3438 [inline] epc : slab_alloc mm/slub.c:3460 [inline] epc : __kmem_cache_alloc_lru mm/slub.c:3467 [inline] epc : kmem_cache_alloc+0x9e/0x2be mm/slub.c:3476 ra : slab_pre_alloc_hook mm/slab.h:722 [inline] ra : slab_alloc_node mm/slub.c:3434 [inline] ra : slab_alloc mm/slub.c:3460 [inline] ra : __kmem_cache_alloc_lru mm/slub.c:3467 [inline] ra : kmem_cache_alloc+0x64/0x2be mm/slub.c:3476 epc : ffffffff804d1eda ra : ffffffff804d1ea0 sp : ffffffff84e06d20 gp : ffffffff85cdd280 tp : ffffffff84e443c0 t0 : ff6000000ad36040 t1 : 00000000000f0000 t2 : 0000000000000a35 s0 : ffffffff84e06dc0 s1 : ff60000007f3ea00 a0 : 0000000000000000 a1 : 0000000000000007 a2 : 1ffffffff0a0ada0 a3 : ffffffff80c84170 a4 : 0000000000000000 a5 : 0000000000000000 a6 : 0000000000000100 a7 : 0000000000000101 s2 : 0000000000000a20 s3 : 0000000000000000 s4 : 0000000000000a20 s5 : ffffffff85d03740 s6 : ffffffff82859bb6 s7 : 00000000000000b8 s8 : ffffffff85ce36a0 s9 : ff6000000ad36058 s10: ffffffff85d03740 s11: 0000000000000000 t3 : fffffffff3f3f300 t4 : fffffffef0f85214 t5 : fffffffef0f85215 t6 : ff6000000ad36034 status: 0000000000000120 badaddr: 0000000000000000 cause: 8000000000000005 [] dst_alloc+0x7e/0x16c net/core/dst.c:92 [] rt_dst_alloc+0x56/0x1b0 net/ipv4/route.c:1633 [] ip_route_input_slow+0x1240/0x21b8 net/ipv4/route.c:2369 [] ip_route_input_rcu net/ipv4/route.c:2483 [inline] [] ip_route_input_noref+0x128/0x2c6 net/ipv4/route.c:2494 [] ip_rcv_finish_core.constprop.0+0x4fc/0x1312 net/ipv4/ip_input.c:365 [] ip_list_rcv_finish net/ipv4/ip_input.c:612 [inline] [] ip_sublist_rcv+0x174/0x712 net/ipv4/ip_input.c:638 [] ip_list_rcv+0x25e/0x2b6 net/ipv4/ip_input.c:673 [] __netif_receive_skb_list_ptype net/core/dev.c:5525 [inline] [] __netif_receive_skb_list_core+0x3e8/0x524 net/core/dev.c:5573 [] __netif_receive_skb_list net/core/dev.c:5625 [inline] [] netif_receive_skb_list_internal+0x4f8/0x802 net/core/dev.c:5716 [] gro_normal_list include/net/gro.h:433 [inline] [] gro_normal_list include/net/gro.h:429 [inline] [] napi_complete_done+0x1aa/0x57c net/core/dev.c:6056 [] virtqueue_napi_complete drivers/net/virtio_net.c:405 [inline] [] virtnet_poll+0x866/0xa04 drivers/net/virtio_net.c:1682 [] __napi_poll+0x7a/0x34e net/core/dev.c:6485 [] napi_poll net/core/dev.c:6552 [inline] [] net_rx_action+0x73c/0x896 net/core/dev.c:6663 [] __do_softirq+0x294/0x930 kernel/softirq.c:571 [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] [] invoke_softirq kernel/softirq.c:452 [inline] [] __irq_exit_rcu+0x154/0x1ea kernel/softirq.c:650 [] irq_exit+0x10/0x7a kernel/softirq.c:674 [] generic_handle_arch_irq+0x48/0x54 kernel/irq/handle.c:240 [] ret_from_exception+0x0/0x1a arch/riscv/kernel/entry.S:249 [] arch_local_irq_enable arch/riscv/include/asm/irqflags.h:22 [inline] [] arch_cpu_idle+0x1c/0x24 arch/riscv/kernel/process.c:42 [] default_idle_call+0x6e/0xae kernel/sched/idle.c:109 [] cpuidle_idle_call kernel/sched/idle.c:191 [inline] [] do_idle+0x352/0x39a kernel/sched/idle.c:303 [] cpu_startup_entry+0x1a/0x1c kernel/sched/idle.c:400 [] rest_init+0x176/0x24e init/main.c:732 [] arch_post_acpi_subsys_init+0x0/0x30 init/main.c:893 [] start_kernel+0x64a/0x678 init/main.c:1148