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[Bug 1885175] [NEW] memory.c range assertion hit at full invalidating
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From: |
Eugenio Pérez |
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Subject: |
[Bug 1885175] [NEW] memory.c range assertion hit at full invalidating |
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Date: |
Thu, 25 Jun 2020 18:59:50 -0000 |
Public bug reported:
I am able to hit this assertion when a Red Hat 7 guest virtio_net device
raises an "Invalidation" of all the TLB entries. This happens in the
guest's startup if 'intel_iommu=on' argument is passed to the guest
kernel and right IOMMU/ATS devices are declared in qemu's command line.
Command line: /home/qemu/x86_64-softmmu/qemu-system-x86_64 -name
guest=rhel7-test,debug-threads=on -machine pc-q35-5.1,accel=kvm,usb=off
,dump-guest-core=off,kernel_irqchip=split -cpu
Broadwell,vme=on,ss=on,vmx=on,f16c=on,rdrand=on,hypervisor=on,arat=on
,tsc-adjust=on,umip=on,arch-
capabilities=on,xsaveopt=on,pdpe1gb=on,abm=on,skip-l1dfl-
vmentry=on,rtm=on,hle=on -m 8096 -realtime mlock=off -smp
2,sockets=2,cores=1,threads=1 -uuid d022ecbf-679e-4755-87ce-eb87fc5bbc5d
-display none -no-user-config -nodefaults -rtc base=utc,driftfix=slew
-global kvm-pit.lost_tick_policy=delay -no-hpet -no-shutdown -global
ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1 -boot strict=on
-device intel-iommu,intremap=on,device-iotlb=on -device pcie-root-
port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x1
-device pcie-root-
port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 -device pcie-
root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 -device
pcie-root-port,port=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3
-device pcie-root-
port,port=0xc,chassis=5,id=pci.5,bus=pcie.0,addr=0x1.0x4 -device pcie-
root-port,port=0xd,chassis=6,id=pci.6,bus=pcie.0,addr=0x1.0x5 -device
pcie-root-port,port=0xe,chassis=7,id=pci.7,bus=pcie.0,addr=0x1.0x6
-device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.2,addr=0x0 -device virtio-
serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 -drive file=/home
/virtio-test2.qcow2,format=qcow2,if=none,id=drive-virtio-disk0 -device
virtio-blk-pci,scsi=off,bus=pci.4,addr=0x0,drive=drive-virtio-disk0,id
=virtio-disk0,bootindex=1 -netdev tap,id=hostnet0,vhost=on,vhostforce=on
-device virtio-net-
pci,netdev=hostnet0,id=net0,mac=52:54:00:0d:1d:f2,bus=pci.1,addr=0x0,iommu_platform=on,ats=on
-device virtio-balloon-pci,id=balloon0,bus=pci.5,addr=0x0 -object rng-
random,id=objrng0,filename=/dev/urandom -device virtio-rng-
pci,rng=objrng0,id=rng0,bus=pci.6,addr=0x0 -s -msg timestamp=on
Full backtrace:
#0 0x00007ffff521370f in raise () at /lib64/libc.so.6
#1 0x00007ffff51fdb25 in abort () at /lib64/libc.so.6
#2 0x00007ffff51fd9f9 in _nl_load_domain.cold.0 () at /lib64/libc.so.6
#3 0x00007ffff520bcc6 in .annobin_assert.c_end () at /lib64/libc.so.6
#4 0x0000555555888171 in memory_region_notify_one (notifier=0x7ffde05dfde8,
entry=0x7ffde5dfe200) at /home/qemu/memory.c:1918
#5 0x0000555555888247 in memory_region_notify_iommu (iommu_mr=0x555556f6c0b0,
iommu_idx=0, entry=...) at /home/qemu/memory.c:1941
#6 0x0000555555951c8d in vtd_process_device_iotlb_desc (s=0x555557609000,
inv_desc=0x7ffde5dfe2d0)
at /home/qemu/hw/i386/intel_iommu.c:2468
#7 0x0000555555951e6a in vtd_process_inv_desc (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2531
#8 0x0000555555951fa5 in vtd_fetch_inv_desc (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2563
#9 0x00005555559520e5 in vtd_handle_iqt_write (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2590
#10 0x0000555555952b45 in vtd_mem_write (opaque=0x555557609000, addr=136,
val=2688, size=4) at /home/qemu/hw/i386/intel_iommu.c:2837
#11 0x0000555555883e17 in memory_region_write_accessor
(mr=0x555557609330, addr=136, value=0x7ffde5dfe478, size=4, shift=0,
mask=4294967295, attrs=...) at /home/qemu/memory.c:483
#12 0x000055555588401d in access_with_adjusted_size
(addr=136, value=0x7ffde5dfe478, size=4, access_size_min=4,
access_size_max=8, access_fn=
0x555555883d38 <memory_region_write_accessor>, mr=0x555557609330,
attrs=...) at /home/qemu/memory.c:544
#13 0x0000555555886f37 in memory_region_dispatch_write (mr=0x555557609330,
addr=136, data=2688, op=MO_32, attrs=...)
at /home/qemu/memory.c:1476
#14 0x0000555555827a03 in flatview_write_continue
(fv=0x7ffde00935d0, addr=4275634312, attrs=..., ptr=0x7ffff7ff0028, len=4,
addr1=136, l=4, mr=0x555557609330) at /home/qemu/exec.c:3146
#15 0x0000555555827b48 in flatview_write (fv=0x7ffde00935d0, addr=4275634312,
attrs=..., buf=0x7ffff7ff0028, len=4)
at /home/qemu/exec.c:3186
#16 0x0000555555827e9d in address_space_write
(as=0x5555567ca640 <address_space_memory>, addr=4275634312, attrs=...,
buf=0x7ffff7ff0028, len=4) at /home/qemu/exec.c:3277
#17 0x0000555555827f0a in address_space_rw
(as=0x5555567ca640 <address_space_memory>, addr=4275634312, attrs=...,
buf=0x7ffff7ff0028, len=4, is_write=true)
at /home/qemu/exec.c:3287
#18 0x000055555589b633 in kvm_cpu_exec (cpu=0x555556b65640) at
/home/qemu/accel/kvm/kvm-all.c:2511
#19 0x0000555555876ba8 in qemu_kvm_cpu_thread_fn (arg=0x555556b65640) at
/home/qemu/cpus.c:1284
#20 0x0000555555dafff1 in qemu_thread_start (args=0x555556b8c3b0) at
util/qemu-thread-posix.c:521
#21 0x00007ffff55a62de in start_thread () at /lib64/libpthread.so.0
#22 0x00007ffff52d7e83 in clone () at /lib64/libc.so.6
--
If we examinate *entry in frame 4 of backtrace:
*entry = {target_as = 0x555556f6c050, iova = 0x0, translated_addr = 0x0,
addr_mask = 0xffffffffffffffff, perm = 0x0}
Which (I think) tries to invalidate all the TLB registers of the device.
Just deleting that assert is enough for the VM to start and communicate
using IOMMU, but maybe a better alternative is possible. We could move
it to the caller functions in other cases than IOMMU invalidation, or
make it conditional only if not invalidating.
Guest kernel version: kernel-3.10.0-1151.el7.x86_64
** Affects: qemu
Importance: Undecided
Status: New
** Tags: iommu
** Description changed:
I am able to hit this assertion when a Red Hat 7 guest virtio_net device
raises an "Invalidation" of all the TLB entries. This happens in the
guest's startup if 'intel_iommu=on' argument is passed to the guest
kernel and right IOMMU/ATS devices are declared in qemu's command line.
Command line: /home/qemu/x86_64-softmmu/qemu-system-x86_64 -name
guest=rhel7-test,debug-threads=on -machine pc-q35-5.1,accel=kvm,usb=off
,dump-guest-core=off,kernel_irqchip=split -cpu
Broadwell,vme=on,ss=on,vmx=on,f16c=on,rdrand=on,hypervisor=on,arat=on
,tsc-adjust=on,umip=on,arch-
capabilities=on,xsaveopt=on,pdpe1gb=on,abm=on,skip-l1dfl-
vmentry=on,rtm=on,hle=on -m 8096 -realtime mlock=off -smp
2,sockets=2,cores=1,threads=1 -uuid d022ecbf-679e-4755-87ce-eb87fc5bbc5d
-display none -no-user-config -nodefaults -rtc base=utc,driftfix=slew
-global kvm-pit.lost_tick_policy=delay -no-hpet -no-shutdown -global
ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1 -boot strict=on
-device intel-iommu,intremap=on,device-iotlb=on -device pcie-root-
port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x1
-device pcie-root-
port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 -device pcie-
root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 -device
pcie-root-port,port=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3
-device pcie-root-
port,port=0xc,chassis=5,id=pci.5,bus=pcie.0,addr=0x1.0x4 -device pcie-
root-port,port=0xd,chassis=6,id=pci.6,bus=pcie.0,addr=0x1.0x5 -device
pcie-root-port,port=0xe,chassis=7,id=pci.7,bus=pcie.0,addr=0x1.0x6
-device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.2,addr=0x0 -device virtio-
serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 -drive file=/home
/virtio-test2.qcow2,format=qcow2,if=none,id=drive-virtio-disk0 -device
virtio-blk-pci,scsi=off,bus=pci.4,addr=0x0,drive=drive-virtio-disk0,id
=virtio-disk0,bootindex=1 -netdev tap,id=hostnet0,vhost=on,vhostforce=on
-device virtio-net-
pci,netdev=hostnet0,id=net0,mac=52:54:00:0d:1d:f2,bus=pci.1,addr=0x0,iommu_platform=on,ats=on
-device virtio-balloon-pci,id=balloon0,bus=pci.5,addr=0x0 -object rng-
random,id=objrng0,filename=/dev/urandom -device virtio-rng-
pci,rng=objrng0,id=rng0,bus=pci.6,addr=0x0 -s -msg timestamp=on
Full backtrace:
#0 0x00007ffff521370f in raise () at /lib64/libc.so.6
#1 0x00007ffff51fdb25 in abort () at /lib64/libc.so.6
#2 0x00007ffff51fd9f9 in _nl_load_domain.cold.0 () at /lib64/libc.so.6
#3 0x00007ffff520bcc6 in .annobin_assert.c_end () at /lib64/libc.so.6
#4 0x0000555555888171 in memory_region_notify_one (notifier=0x7ffde05dfde8,
entry=0x7ffde5dfe200) at /home/qemu/memory.c:1918
#5 0x0000555555888247 in memory_region_notify_iommu
(iommu_mr=0x555556f6c0b0, iommu_idx=0, entry=...) at /home/qemu/memory.c:1941
#6 0x0000555555951c8d in vtd_process_device_iotlb_desc (s=0x555557609000,
inv_desc=0x7ffde5dfe2d0)
- at /home/qemu/hw/i386/intel_iommu.c:2468
+ at /home/qemu/hw/i386/intel_iommu.c:2468
#7 0x0000555555951e6a in vtd_process_inv_desc (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2531
#8 0x0000555555951fa5 in vtd_fetch_inv_desc (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2563
#9 0x00005555559520e5 in vtd_handle_iqt_write (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2590
#10 0x0000555555952b45 in vtd_mem_write (opaque=0x555557609000, addr=136,
val=2688, size=4) at /home/qemu/hw/i386/intel_iommu.c:2837
#11 0x0000555555883e17 in memory_region_write_accessor
- (mr=0x555557609330, addr=136, value=0x7ffde5dfe478, size=4, shift=0,
mask=4294967295, attrs=...) at /home/qemu/memory.c:483
+ (mr=0x555557609330, addr=136, value=0x7ffde5dfe478, size=4, shift=0,
mask=4294967295, attrs=...) at /home/qemu/memory.c:483
#12 0x000055555588401d in access_with_adjusted_size
- (addr=136, value=0x7ffde5dfe478, size=4, access_size_min=4,
access_size_max=8, access_fn=
- 0x555555883d38 <memory_region_write_accessor>, mr=0x555557609330,
attrs=...) at /home/qemu/memory.c:544
+ (addr=136, value=0x7ffde5dfe478, size=4, access_size_min=4,
access_size_max=8, access_fn=
+ 0x555555883d38 <memory_region_write_accessor>, mr=0x555557609330,
attrs=...) at /home/qemu/memory.c:544
#13 0x0000555555886f37 in memory_region_dispatch_write (mr=0x555557609330,
addr=136, data=2688, op=MO_32, attrs=...)
- at /home/qemu/memory.c:1476
+ at /home/qemu/memory.c:1476
#14 0x0000555555827a03 in flatview_write_continue
- (fv=0x7ffde00935d0, addr=4275634312, attrs=..., ptr=0x7ffff7ff0028,
len=4, addr1=136, l=4, mr=0x555557609330) at /home/qemu/exec.c:3146
+ (fv=0x7ffde00935d0, addr=4275634312, attrs=..., ptr=0x7ffff7ff0028,
len=4, addr1=136, l=4, mr=0x555557609330) at /home/qemu/exec.c:3146
#15 0x0000555555827b48 in flatview_write (fv=0x7ffde00935d0, addr=4275634312,
attrs=..., buf=0x7ffff7ff0028, len=4)
- at /home/qemu/exec.c:3186
+ at /home/qemu/exec.c:3186
#16 0x0000555555827e9d in address_space_write
- (as=0x5555567ca640 <address_space_memory>, addr=4275634312, attrs=...,
buf=0x7ffff7ff0028, len=4) at /home/qemu/exec.c:3277
+ (as=0x5555567ca640 <address_space_memory>, addr=4275634312, attrs=...,
buf=0x7ffff7ff0028, len=4) at /home/qemu/exec.c:3277
#17 0x0000555555827f0a in address_space_rw
- (as=0x5555567ca640 <address_space_memory>, addr=4275634312, attrs=...,
buf=0x7ffff7ff0028, len=4, is_write=true)
- at /home/qemu/exec.c:3287
+ (as=0x5555567ca640 <address_space_memory>, addr=4275634312, attrs=...,
buf=0x7ffff7ff0028, len=4, is_write=true)
+ at /home/qemu/exec.c:3287
#18 0x000055555589b633 in kvm_cpu_exec (cpu=0x555556b65640) at
/home/qemu/accel/kvm/kvm-all.c:2511
#19 0x0000555555876ba8 in qemu_kvm_cpu_thread_fn (arg=0x555556b65640) at
/home/qemu/cpus.c:1284
#20 0x0000555555dafff1 in qemu_thread_start (args=0x555556b8c3b0) at
util/qemu-thread-posix.c:521
#21 0x00007ffff55a62de in start_thread () at /lib64/libpthread.so.0
#22 0x00007ffff52d7e83 in clone () at /lib64/libc.so.6
--
If we examinate *entry in frame 4 of backtrace:
*entry = {target_as = 0x555556f6c050, iova = 0x0, translated_addr = 0x0,
addr_mask = 0xffffffffffffffff, perm = 0x0}
Which (I think) tries to invalidate all the TLB registers of the device.
Just deleting that assert is enough for the VM to start and communicate
using IOMMU, but maybe a better alternative is possible. We could move
it to the caller functions in other cases than IOMMU invalidation, or
make it conditional only if not invalidating.
- Guest kernel version: kernel-3.10.0-1136.el7
+ Guest kernel version: kernel-3.10.0-1151.el7.x86_64
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1885175
Title:
memory.c range assertion hit at full invalidating
Status in QEMU:
New
Bug description:
I am able to hit this assertion when a Red Hat 7 guest virtio_net
device raises an "Invalidation" of all the TLB entries. This happens
in the guest's startup if 'intel_iommu=on' argument is passed to the
guest kernel and right IOMMU/ATS devices are declared in qemu's
command line.
Command line: /home/qemu/x86_64-softmmu/qemu-system-x86_64 -name
guest=rhel7-test,debug-threads=on -machine
pc-q35-5.1,accel=kvm,usb=off,dump-guest-core=off,kernel_irqchip=split
-cpu
Broadwell,vme=on,ss=on,vmx=on,f16c=on,rdrand=on,hypervisor=on,arat=on
,tsc-adjust=on,umip=on,arch-
capabilities=on,xsaveopt=on,pdpe1gb=on,abm=on,skip-l1dfl-
vmentry=on,rtm=on,hle=on -m 8096 -realtime mlock=off -smp
2,sockets=2,cores=1,threads=1 -uuid d022ecbf-679e-4755-87ce-
eb87fc5bbc5d -display none -no-user-config -nodefaults -rtc
base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=delay -no-hpet
-no-shutdown -global ICH9-LPC.disable_s3=1 -global
ICH9-LPC.disable_s4=1 -boot strict=on -device intel-iommu,intremap=on
,device-iotlb=on -device pcie-root-
port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x1
-device pcie-root-
port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 -device pcie-
root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 -device
pcie-root-port,port=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3
-device pcie-root-
port,port=0xc,chassis=5,id=pci.5,bus=pcie.0,addr=0x1.0x4 -device pcie-
root-port,port=0xd,chassis=6,id=pci.6,bus=pcie.0,addr=0x1.0x5 -device
pcie-root-port,port=0xe,chassis=7,id=pci.7,bus=pcie.0,addr=0x1.0x6
-device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.2,addr=0x0 -device
virtio-serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 -drive
file=/home/virtio-test2.qcow2,format=qcow2,if=none,id=drive-virtio-
disk0 -device virtio-blk-pci,scsi=off,bus=pci.4,addr=0x0,drive=drive-
virtio-disk0,id=virtio-disk0,bootindex=1 -netdev
tap,id=hostnet0,vhost=on,vhostforce=on -device virtio-net-
pci,netdev=hostnet0,id=net0,mac=52:54:00:0d:1d:f2,bus=pci.1,addr=0x0,iommu_platform=on,ats=on
-device virtio-balloon-pci,id=balloon0,bus=pci.5,addr=0x0 -object rng-
random,id=objrng0,filename=/dev/urandom -device virtio-rng-
pci,rng=objrng0,id=rng0,bus=pci.6,addr=0x0 -s -msg timestamp=on
Full backtrace:
#0 0x00007ffff521370f in raise () at /lib64/libc.so.6
#1 0x00007ffff51fdb25 in abort () at /lib64/libc.so.6
#2 0x00007ffff51fd9f9 in _nl_load_domain.cold.0 () at /lib64/libc.so.6
#3 0x00007ffff520bcc6 in .annobin_assert.c_end () at /lib64/libc.so.6
#4 0x0000555555888171 in memory_region_notify_one (notifier=0x7ffde05dfde8,
entry=0x7ffde5dfe200) at /home/qemu/memory.c:1918
#5 0x0000555555888247 in memory_region_notify_iommu
(iommu_mr=0x555556f6c0b0, iommu_idx=0, entry=...) at /home/qemu/memory.c:1941
#6 0x0000555555951c8d in vtd_process_device_iotlb_desc (s=0x555557609000,
inv_desc=0x7ffde5dfe2d0)
at /home/qemu/hw/i386/intel_iommu.c:2468
#7 0x0000555555951e6a in vtd_process_inv_desc (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2531
#8 0x0000555555951fa5 in vtd_fetch_inv_desc (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2563
#9 0x00005555559520e5 in vtd_handle_iqt_write (s=0x555557609000) at
/home/qemu/hw/i386/intel_iommu.c:2590
#10 0x0000555555952b45 in vtd_mem_write (opaque=0x555557609000, addr=136,
val=2688, size=4) at /home/qemu/hw/i386/intel_iommu.c:2837
#11 0x0000555555883e17 in memory_region_write_accessor
(mr=0x555557609330, addr=136, value=0x7ffde5dfe478, size=4, shift=0,
mask=4294967295, attrs=...) at /home/qemu/memory.c:483
#12 0x000055555588401d in access_with_adjusted_size
(addr=136, value=0x7ffde5dfe478, size=4, access_size_min=4,
access_size_max=8, access_fn=
0x555555883d38 <memory_region_write_accessor>, mr=0x555557609330,
attrs=...) at /home/qemu/memory.c:544
#13 0x0000555555886f37 in memory_region_dispatch_write (mr=0x555557609330,
addr=136, data=2688, op=MO_32, attrs=...)
at /home/qemu/memory.c:1476
#14 0x0000555555827a03 in flatview_write_continue
(fv=0x7ffde00935d0, addr=4275634312, attrs=..., ptr=0x7ffff7ff0028,
len=4, addr1=136, l=4, mr=0x555557609330) at /home/qemu/exec.c:3146
#15 0x0000555555827b48 in flatview_write (fv=0x7ffde00935d0, addr=4275634312,
attrs=..., buf=0x7ffff7ff0028, len=4)
at /home/qemu/exec.c:3186
#16 0x0000555555827e9d in address_space_write
(as=0x5555567ca640 <address_space_memory>, addr=4275634312, attrs=...,
buf=0x7ffff7ff0028, len=4) at /home/qemu/exec.c:3277
#17 0x0000555555827f0a in address_space_rw
(as=0x5555567ca640 <address_space_memory>, addr=4275634312, attrs=...,
buf=0x7ffff7ff0028, len=4, is_write=true)
at /home/qemu/exec.c:3287
#18 0x000055555589b633 in kvm_cpu_exec (cpu=0x555556b65640) at
/home/qemu/accel/kvm/kvm-all.c:2511
#19 0x0000555555876ba8 in qemu_kvm_cpu_thread_fn (arg=0x555556b65640) at
/home/qemu/cpus.c:1284
#20 0x0000555555dafff1 in qemu_thread_start (args=0x555556b8c3b0) at
util/qemu-thread-posix.c:521
#21 0x00007ffff55a62de in start_thread () at /lib64/libpthread.so.0
#22 0x00007ffff52d7e83 in clone () at /lib64/libc.so.6
--
If we examinate *entry in frame 4 of backtrace:
*entry = {target_as = 0x555556f6c050, iova = 0x0, translated_addr = 0x0,
addr_mask = 0xffffffffffffffff, perm = 0x0}
Which (I think) tries to invalidate all the TLB registers of the
device.
Just deleting that assert is enough for the VM to start and
communicate using IOMMU, but maybe a better alternative is possible.
We could move it to the caller functions in other cases than IOMMU
invalidation, or make it conditional only if not invalidating.
Guest kernel version: kernel-3.10.0-1151.el7.x86_64
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