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a6adb10622
linux/arch/x86/kvm
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Paolo Bonzini a6adb10622 KVM: page_track: fix access to NULL slot 
This happens when doing the reboot test from virt-tests:

[  131.833653] BUG: unable to handle kernel NULL pointer dereference at           (null)
[  131.842461] IP: [<ffffffffa0950087>] kvm_page_track_is_active+0x17/0x60 [kvm]
[  131.850500] PGD 0
[  131.852763] Oops: 0000 [#1] SMP
[  132.007188] task: ffff880075fbc500 ti: ffff880850a3c000 task.ti: ffff880850a3c000
[  132.138891] Call Trace:
[  132.141639]  [<ffffffffa092bd11>] page_fault_handle_page_track+0x31/0x40 [kvm]
[  132.149732]  [<ffffffffa093380f>] paging64_page_fault+0xff/0x910 [kvm]
[  132.172159]  [<ffffffffa092c734>] kvm_mmu_page_fault+0x64/0x110 [kvm]
[  132.179372]  [<ffffffffa06743c2>] handle_exception+0x1b2/0x430 [kvm_intel]
[  132.187072]  [<ffffffffa067a301>] vmx_handle_exit+0x1e1/0xc50 [kvm_intel]
...

Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Fixes: 3d0c27ad6e
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 17:27:28 +01:00
..
assigned-dev.c KVM: x86: use list_for_each_entry* 2016-02-23 15:40:54 +01:00
assigned-dev.h KVM: x86: move device assignment out of kvm_host.h 2014-11-24 16:53:50 +01:00
cpuid.c KVM, pkeys: expose CPUID/CR4 to guest 2016-03-22 16:38:17 +01:00
cpuid.h KVM, pkeys: expose CPUID/CR4 to guest 2016-03-22 16:38:17 +01:00
emulate.c Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-20 18:23:21 -07:00
hyperv.c kvm/x86: Hyper-V VMBus hypercall userspace exit 2016-02-16 18:48:44 +01:00
hyperv.h kvm/x86: Hyper-V SynIC timers 2015-12-16 18:49:45 +01:00
i8254.c KVM: i8254: drop local copy of mul_u64_u32_div 2016-03-04 22:39:17 +01:00
i8254.h KVM: i8254: turn kvm_kpit_state.reinject into atomic_t 2016-03-04 09:30:25 +01:00
i8259.c KVM: x86: clean/fix memory barriers in irqchip_in_kernel 2015-07-30 16:02:56 +02:00
ioapic.c kvm: x86: Check dest_map->vector to match eoi signals for rtc 2016-03-03 14:36:18 +01:00
ioapic.h kvm: x86: Track irq vectors in ioapic->rtc_status.dest_map 2016-03-03 14:36:18 +01:00
iommu.c kvm: rename pfn_t to kvm_pfn_t 2016-01-15 17:56:32 -08:00
irq_comm.c kvm: x86: Convert ioapic->rtc_status.dest_map to a struct 2016-03-03 14:36:17 +01:00
irq.c KVM: x86: consolidate "has lapic" checks into irq.c 2016-02-09 16:57:39 +01:00
irq.h KVM: x86: consolidate different ways to test for in-kernel LAPIC 2016-02-09 16:57:45 +01:00
Kconfig KVM: x86: select IRQ_BYPASS_MANAGER 2015-10-01 15:06:52 +02:00
kvm_cache_regs.h KVM, pkeys: add pkeys support for permission_fault 2016-03-22 16:23:37 +01:00
lapic.c One of the largest releases for KVM... Hardly any generic improvement, 2016-03-16 09:55:35 -07:00
lapic.h kvm: x86: Convert ioapic->rtc_status.dest_map to a struct 2016-03-03 14:36:17 +01:00
Makefile KVM: page track: add the framework of guest page tracking 2016-03-03 14:36:20 +01:00
mmu_audit.c kvm: rename pfn_t to kvm_pfn_t 2016-01-15 17:56:32 -08:00
mmu.c KVM/x86: Replace smp_mb() with smp_store_mb/release() in the walk_shadow_page_lockless_begin/end() 2016-03-22 16:38:29 +01:00
mmu.h KVM, pkeys: add pkeys support for permission_fault 2016-03-22 16:23:37 +01:00
mmutrace.h tracing: Rename ftrace_event.h to trace_events.h 2015-05-13 14:05:12 -04:00
mtrr.c KVM: MTRR: treat memory as writeback if MTRR is disabled in guest CPUID 2015-12-22 15:29:00 +01:00
page_track.c KVM: page_track: fix access to NULL slot 2016-03-22 17:27:28 +01:00
paging_tmpl.h KVM/x86: Call smp_wmb() before increasing tlbs_dirty 2016-03-22 16:38:32 +01:00
pmu_amd.c KVM: x86/vPMU: Fix unnecessary signed extension for AMD PERFCTRn 2015-08-11 15:19:41 +02:00
pmu_intel.c KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch 2015-06-23 14:12:14 +02:00
pmu.c KVM: x86: consolidate different ways to test for in-kernel LAPIC 2016-02-09 16:57:45 +01:00
pmu.h KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch 2015-06-23 14:12:14 +02:00
svm.c KVM, pkeys: add pkeys support for permission_fault 2016-03-22 16:23:37 +01:00
trace.h KVM/VMX: Add host irq information in trace event when updating IRTE for posted interrupts 2016-02-09 13:24:43 +01:00
tss.h
vmx.c KVM, pkeys: add pkeys support for permission_fault 2016-03-22 16:23:37 +01:00
x86.c KVM/x86: update the comment of memory barrier in the vcpu_enter_guest() 2016-03-22 16:38:35 +01:00
x86.h KVM, pkeys: add pkeys support for xsave state 2016-03-22 16:21:05 +01:00