From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- arch/mips/kvm/interrupt.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 arch/mips/kvm/interrupt.c (limited to 'arch/mips/kvm/interrupt.c') diff --git a/arch/mips/kvm/interrupt.c b/arch/mips/kvm/interrupt.c new file mode 100644 index 000000000..895a6f178 --- /dev/null +++ b/arch/mips/kvm/interrupt.c @@ -0,0 +1,40 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * KVM/MIPS: Interrupt delivery + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + * Authors: Sanjay Lal + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "interrupt.h" + +void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause) +{ + unsigned long *pending = &vcpu->arch.pending_exceptions; + unsigned long *pending_clr = &vcpu->arch.pending_exceptions_clr; + unsigned int priority; + + for_each_set_bit(priority, pending_clr, MIPS_EXC_MAX + 1) + kvm_mips_callbacks->irq_clear(vcpu, priority, cause); + + for_each_set_bit(priority, pending, MIPS_EXC_MAX + 1) + kvm_mips_callbacks->irq_deliver(vcpu, priority, cause); +} + +int kvm_mips_pending_timer(struct kvm_vcpu *vcpu) +{ + return test_bit(MIPS_EXC_INT_TIMER, &vcpu->arch.pending_exceptions); +} -- cgit v1.3.1