Sean Christopherson ed8bbe6627 KVM: Grab a reference to KVM for VM and vCPU stats file descriptors ... commit eed3013faa401aae662398709410a59bb0646e32 upstream. Grab a reference to KVM prior to installing VM and vCPU stats file descriptors to ensure the underlying VM and vCPU objects are not freed until the last reference to any and all stats fds are dropped. Note, the stats paths manually invoke fd_install() and so don't need to grab a reference before creating the file. Fixes: ce55c04945 ("KVM: stats: Support binary stats retrieval for a VCPU") Fixes: fcfe1baedd ("KVM: stats: Support binary stats retrieval for a VM") Reported-by: Zheng Zhang <zheng.zhang@email.ucr.edu> Closes: https://lore.kernel.org/all/CAC_GQSr3xzZaeZt85k_RCBd5kfiOve8qXo7a81Cq53LuVQ5r=Q@mail.gmail.com Cc: stable@vger.kernel.org Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Message-Id: <20230711230131.648752-2-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-08-03 10:24:08 +02:00
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async_pf.c	KVM: Add helpers to wake/query blocking vCPU	2021-12-08 04:24:54 -05:00
async_pf.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504	2019-06-19 17:09:56 +02:00
binary_stats.c	KVM: stats: remove dead stores	2021-08-13 03:35:15 -04:00
coalesced_mmio.c	KVM: Destroy target device if coalesced MMIO unregistration fails	2023-03-10 09:34:11 +01:00
coalesced_mmio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
dirty_ring.c	KVM: Use acquire/release semantics when accessing dirty ring GFN state	2022-09-29 10:23:08 +01:00
eventfd.c	KVM: eventfd: Fix false positive RCU usage warning	2022-05-20 09:10:33 -04:00
irqchip.c	KVM/arm updates for 5.3	2019-07-11 15:14:16 +02:00
Kconfig	KVM: Add KVM_CAP_DIRTY_LOG_RING_ACQ_REL capability and config option	2022-09-29 10:23:08 +01:00
kvm_main.c	KVM: Grab a reference to KVM for VM and vCPU stats file descriptors	2023-08-03 10:24:08 +02:00
kvm_mm.h	KVM: SPDX style and spelling fixes	2022-04-21 13:16:13 -04:00
Makefile.kvm	KVM: Reinstate gfn_to_pfn_cache with invalidation support	2022-01-07 10:44:44 -05:00
pfncache.c	KVM: Update gfn_to_pfn_cache khva when it moves within the same page	2022-11-23 18:58:46 -05:00
vfio.c	kvm/vfio: Fix potential deadlock on vfio group_lock	2023-02-01 08:34:36 +01:00
vfio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00