watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u4:7:648] Modules linked in: irq event stamp: 106151 hardirqs last enabled at (106150): [] __trace_hardirqs_on+0x18/0x20 arch/riscv/kernel/trace_irq.c:19 hardirqs last disabled at (106151): [] __trace_hardirqs_off+0x18/0x20 arch/riscv/kernel/trace_irq.c:25 softirqs last enabled at (101522): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (101522): [] __do_softirq+0x61e/0x906 kernel/softirq.c:600 softirqs last disabled at (101691): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (101691): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (101691): [] __irq_exit_rcu+0x154/0x1ea kernel/softirq.c:650 CPU: 0 PID: 648 Comm: kworker/u4:7 Tainted: G W 6.0.0-rc1-syzkaller-00006-ga057092b801e #0 Hardware name: riscv-virtio,qemu (DT) Workqueue: events_unbound toggle_allocation_gate 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:3161 [inline] epc : __kmalloc_node_track_caller+0xae/0x35c mm/slub.c:4955 ra : slab_pre_alloc_hook mm/slab.h:702 [inline] ra : slab_alloc_node mm/slub.c:3157 [inline] ra : __kmalloc_node_track_caller+0x74/0x35c mm/slub.c:4955 epc : ffffffff804ae066 ra : ffffffff804ae02c sp : ff200000117a6f00 gp : ffffffff85a97360 tp : ff600000105f18c0 t0 : ffebffff0254bcbe t1 : 00000000000f0000 t2 : 0000000000000001 s0 : ff200000117a6fa0 s1 : ff60000007e01dc0 a0 : 0000000000000000 a1 : 0000000000000007 a2 : 1ffffffff09c9ce0 a3 : ffffffff80c47480 a4 : 0000000000000000 a5 : 0000000000000000 a6 : ffffffffb8998500 a7 : 0000000000000100 s2 : 0000000000082a20 s3 : 0000000000082a20 s4 : 0000000000000240 s5 : ffffffffffffffff s6 : ffffffff827ac0d4 s7 : ffffffff85abd7c0 s8 : 0000000000000000 s9 : ffffffff85a9d520 s10: ff6000007fdef7c0 s11: ff60000012034bf4 t3 : fffffffff204f202 t4 : ffebffff0103a798 t5 : ffebffff0103a799 t6 : 0000000000000006 status: 0000000000000120 badaddr: 0000000000000000 cause: 8000000000000005 [] kmalloc_reserve net/core/skbuff.c:358 [inline] [] __alloc_skb+0xe6/0x2c2 net/core/skbuff.c:430 [] __napi_alloc_skb+0x72/0x20c net/core/skbuff.c:571 [] napi_alloc_skb include/linux/skbuff.h:3186 [inline] [] page_to_skb+0x172/0x712 drivers/net/virtio_net.c:496 [] receive_mergeable drivers/net/virtio_net.c:1119 [inline] [] receive_buf+0xac4/0x401a drivers/net/virtio_net.c:1258 [] virtnet_receive drivers/net/virtio_net.c:1553 [inline] [] virtnet_poll+0x3be/0xa04 drivers/net/virtio_net.c:1671 [] __napi_poll+0x7a/0x34e net/core/dev.c:6511 [] napi_poll net/core/dev.c:6578 [inline] [] net_rx_action+0x728/0x882 net/core/dev.c:6689 [] __do_softirq+0x274/0x906 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+0x0/0x10 [] copy_to_kernel_nofault+0x1f8/0x2a8 mm/maccess.c:70