Jan Kiszka 0924ab2cfa KVM: x86: Prevent starting PIT timers in the absence of irqchip support ... User space may create the PIT and forgets about setting up the irqchips. In that case, firing PIT IRQs will crash the host: BUG: unable to handle kernel NULL pointer dereference at 0000000000000128 IP: [<ffffffffa10f6280>] kvm_set_irq+0x30/0x170 [kvm] ... Call Trace: [<ffffffffa11228c1>] pit_do_work+0x51/0xd0 [kvm] [<ffffffff81071431>] process_one_work+0x111/0x4d0 [<ffffffff81071bb2>] worker_thread+0x152/0x340 [<ffffffff81075c8e>] kthread+0x7e/0x90 [<ffffffff815a4474>] kernel_thread_helper+0x4/0x10 Prevent this by checking the irqchip mode before starting a timer. We can't deny creating the PIT if the irqchips aren't set up yet as current user land expects this order to work. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>		2011-12-25 17:13:18 +02:00
..
emulate.c	KVM: x86 emulator: convert push %sreg/pop %sreg to direct decode	2011-09-25 19:52:58 +03:00
i8254.c	KVM: x86: Prevent starting PIT timers in the absence of irqchip support	2011-12-25 17:13:18 +02:00
i8254.h	KVM: remove useless function declaration kvm_inject_pit_timer_irqs()	2011-05-11 07:57:09 -04:00
i8259.c	KVM: Clean up and extend rate-limited output	2011-09-25 19:52:43 +03:00
irq.c	KVM: fix typo in copyright notice	2010-10-24 10:53:14 +02:00
irq.h	KVM: Intelligent device lookup on I/O bus	2011-09-25 19:17:59 +03:00
Kconfig	KVM: uses TASKSTATS, depends on NET	2011-08-16 19:00:41 +03:00
kvm_cache_regs.h	KVM: MMU: Do not unconditionally read PDPTE from guest memory	2011-09-25 19:18:01 +03:00
kvm_timer.h	KVM: emulate lapic tsc deadline timer for guest	2011-10-05 15:34:56 +02:00
lapic.c	KVM: emulate lapic tsc deadline timer for guest	2011-10-05 15:34:56 +02:00
lapic.h	KVM: emulate lapic tsc deadline timer for guest	2011-10-05 15:34:56 +02:00
Makefile	KVM: x86: Makefile clean up	2011-01-12 11:29:08 +02:00
mmu.c	KVM: MMU: Do not unconditionally read PDPTE from guest memory	2011-09-25 19:18:01 +03:00
mmu.h	KVM: MMU: mmio page fault support	2011-07-24 11:50:40 +03:00
mmu_audit.c	KVM: Clean up and extend rate-limited output	2011-09-25 19:52:43 +03:00
mmutrace.h	KVM: MMU: trace mmio page fault	2011-07-24 11:50:41 +03:00
paging_tmpl.h	KVM: MMU: Fix SMEP failure during fetch	2011-09-25 19:18:02 +03:00
svm.c	KVM: SVM: Keep intercepting task switching with NPT enabled	2011-10-30 12:24:10 +02:00
timer.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
trace.h	KVM: Use __print_symbolic() for vmexit tracepoints	2011-09-25 19:17:59 +03:00
tss.h
vmx.c	KVM: VMX: Check for automatic switch msr table overflow	2011-11-17 16:28:09 +02:00
x86.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu	2011-10-30 15:46:19 -07:00
x86.h	KVM: MMU: cache mmio info on page fault path	2011-07-24 11:50:26 +03:00