mirror of https://github.com/proxmox/mirror_qemu
![]() Hello, A null pointer dereference issue was reported by Mr Ling Liu, CC'd here. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null as it is not called from cpu_exec loop, which results in the said issue. Below is a proposed (tested)patch to fix this issue; Does it look okay? === From ae88a4947fab9a148cd794f8ad2d812e7f5a1d0f Mon Sep 17 00:00:00 2001 From: Prasad J Pandit <pjp@fedoraproject.org> Date: Fri, 18 Dec 2015 11:16:07 +0530 Subject: [PATCH] i386: avoid null pointer dereference When I/O port write operation is called from hmp interface, 'current_cpu' remains null, as it is not called from cpu_exec() loop. This leads to a null pointer dereference in vapic_write routine. Add check to avoid it. Reported-by: Ling Liu <liuling-it@360.cn> Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Message-Id: <alpine.LFD.2.20.1512181129320.9805@wniryva> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: P J P <ppandit@redhat.com> |
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.. | ||
kvm | ||
xen | ||
Makefile.objs | ||
acpi-build.c | ||
acpi-build.h | ||
intel_iommu.c | ||
intel_iommu_internal.h | ||
kvmvapic.c | ||
multiboot.c | ||
multiboot.h | ||
pc.c | ||
pc_piix.c | ||
pc_q35.c | ||
pc_sysfw.c | ||
pci-assign-load-rom.c |