[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
** Changed in: dosemu2 Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
This bug was fixed in the package linux - 4.15.0-141.145
---
linux (4.15.0-141.145) bionic; urgency=medium
* bionic/linux: 4.15.0-141.145 -proposed tracker (LP: #1919536)
* binary assembly failures with CONFIG_MODVERSIONS present (LP: #1919315)
- [Packaging] quiet (nomially) benign errors in BUILD script
* selftests: bpf verifier fails after sanitize_ptr_alu fixes (LP: #1920995)
- bpf: Simplify alu_limit masking for pointer arithmetic
- bpf: Add sanity check for upper ptr_limit
- bpf, selftests: Fix up some test_verifier cases for unprivileged
* Packaging resync (LP: #1786013)
- update dkms package versions
* CVE-2018-13095
- xfs: More robust inode extent count validation
* i40e PF reset due to incorrect MDD event (LP: #1772675)
- i40e: change behavior on PF in response to MDD event
* Bionic update: upstream stable patchset 2021-03-09 (LP: #1918330)
- ACPI: sysfs: Prefer "compatible" modalias
- ARM: dts: imx6qdl-gw52xx: fix duplicate regulator naming
- wext: fix NULL-ptr-dereference with cfg80211's lack of commit()
- net: usb: qmi_wwan: added support for Thales Cinterion PLSx3 modem family
- drivers: soc: atmel: Avoid calling at91_soc_init on non AT91 SoCs
- drivers: soc: atmel: add null entry at the end of at91_soc_allowed_list[]
- KVM: x86/pmu: Fix HW_REF_CPU_CYCLES event pseudo-encoding in
intel_arch_events[]
- KVM: x86: get smi pending status correctly
- xen: Fix XenStore initialisation for XS_LOCAL
- leds: trigger: fix potential deadlock with libata
- mt7601u: fix kernel crash unplugging the device
- mt7601u: fix rx buffer refcounting
- xen-blkfront: allow discard-* nodes to be optional
- ARM: imx: build suspend-imx6.S with arm instruction set
- netfilter: nft_dynset: add timeout extension to template
- xfrm: Fix oops in xfrm_replay_advance_bmp
- RDMA/cxgb4: Fix the reported max_recv_sge value
- iwlwifi: pcie: use jiffies for memory read spin time limit
- iwlwifi: pcie: reschedule in long-running memory reads
- mac80211: pause TX while changing interface type
- can: dev: prevent potential information leak in can_fill_info()
- x86/entry/64/compat: Preserve r8-r11 in int $0x80
- x86/entry/64/compat: Fix "x86/entry/64/compat: Preserve r8-r11 in int
$0x80"
- iommu/vt-d: Gracefully handle DMAR units with no supported address widths
- iommu/vt-d: Don't dereference iommu_device if IOMMU_API is not built
- NFC: fix resource leak when target index is invalid
- NFC: fix possible resource leak
- team: protect features update by RCU to avoid deadlock
- tcp: fix TLP timer not set when CA_STATE changes from DISORDER to OPEN
- kernel: kexec: remove the lock operation of system_transition_mutex
- PM: hibernate: flush swap writer after marking
- pNFS/NFSv4: Fix a layout segment leak in pnfs_layout_process()
- net/mlx5: Fix memory leak on flow table creation error flow
- rxrpc: Fix memory leak in rxrpc_lookup_local
- net: dsa: bcm_sf2: put device node before return
- ibmvnic: Ensure that CRQ entry read are correctly ordered
- ACPI: thermal: Do not call acpi_thermal_check() directly
- net_sched: gen_estimator: support large ewma log
- phy: cpcap-usb: Fix warning for missing regulator_disable
- x86: __always_inline __{rd,wr}msr()
- scsi: scsi_transport_srp: Don't block target in failfast state
- scsi: libfc: Avoid invoking response handler twice if ep is already
completed
- mac80211: fix fast-rx encryption check
- scsi: ibmvfc: Set default timeout to avoid crash during migration
- objtool: Don't fail on missing symbol table
- kthread: Extract KTHREAD_IS_PER_CPU
- workqueue: Restrict affinity change to rescuer
- USB: serial: cp210x: add pid/vid for WSDA-200-USB
- USB: serial: cp210x: add new VID/PID for supporting Teraoka AD2000
- USB: serial: option: Adding support for Cinterion MV31
- arm64: dts: ls1046a: fix dcfg address range
- net: lapb: Copy the skb before sending a packet
- elfcore: fix building with clang
- USB: gadget: legacy: fix an error code in eth_bind()
- USB: usblp: don't call usb_set_interface if there's a single alt
- usb: dwc2: Fix endpoint direction check in ep_from_windex
- ovl: fix dentry leak in ovl_get_redirect
- mac80211: fix station rate table updates on assoc
- kretprobe: Avoid re-registration of the same kretprobe earlier
- xhci: fix bounce buffer usage for non-sg list case
- cifs: report error instead of invalid when revalidating a dentry fails
- smb3: Fix out-of-bounds bug in SMB2_negotiate()
- mmc: core: Limit retries when analyse of SDIO tuples fails
- nvme-pci: avoid the deepest sleep state on Kingston A2000 SSDs
- ARM: footbridge: fix dc21285 PCI configuration accessors
- mm: hugetlbfs: fix cannot migrate the fallocated HugeTLB page
- mm: hugetlb: fix
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
hi Bambang, the fix is present in the current proposed version, 4.15.0-141 - both versions 4.15.0-139 and -140 are CVE fixes only, so they didn't include the KVM fix. Cheers, Guilherme -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
** Tags removed: bot-comment verification-needed-bionic ** Tags added: verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed- bionic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
Dear Guilherme, I just want to inform you . Today my kernel is upgraded to version 4.15.0-139-generic, but the bug is still there. Thank you. On Fri, Mar 5, 2021 at 4:50 PM Stefan Bader <1917...@bugs.launchpad.net> wrote: > ** Changed in: linux (Ubuntu Bionic) >Status: In Progress => Fix Committed > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1917138 > > Title: > Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to > lack of KVM patch > > To manage notifications about this bug go to: > https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions > -- Bambang P http://bpranoto.blogspot.com -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
** Changed in: linux (Ubuntu Bionic) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Importance: Undecided => High ** Changed in: linux (Ubuntu Bionic) Status: New => In Progress ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Guilherme G. Piccoli (gpiccoli) ** Changed in: linux (Ubuntu) Importance: High => Undecided ** Changed in: linux (Ubuntu) Status: In Progress => Invalid ** Changed in: linux (Ubuntu) Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
** Changed in: dosemu2 Status: Fix Released => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
Thanks a lot for the tests Bambang, and for the report! The patch was submitted to the Ubuntu kernel ML, soon it should be applied. Cheers, Guilherme -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917138 Title: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch To manage notifications about this bug go to: https://bugs.launchpad.net/dosemu2/+bug/1917138/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1917138] Re: Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack of KVM patch
** Summary changed:
- kernel 4.15.0-136 causes dosemu2 with kvm freezes
+ Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to lack
of KVM patch
** Description changed:
+ [Impact]
+ * Since kernel 4.15.0-136, Bionic kernel included a very complex KVM fix for
a kind of "race" in interrupt window with irqchip-split (reported in [0]). The
fix was proposed in the form of a patch series containing 2 patches [1] - this
was merged in Ubuntu though the stable tree, in the form of the following
commit:
+ 71cc849b7093 ("KVM: x86: Fix split-irqchip vs interrupt injection window
request") [2]
+
+ * The problem is that such commit has a companion required commit, which
+ was not proposed in the stable tree. In fact, there was a confusion
+ among KVM community and the stable maintainer [3], due to the lack of
+ such missing commit - because of that, the series was removed from
+ stable trees 4.14.y and 4.9.y, but the solo commit was merged alone in
+ Ubuntu kernel.
+
+ * Without the companion patch, we might have a KVM infinite "loop" condition
in the core IRQ handling, since the merged commit requires an extra check in
kvm_cpu_has_extint() and a condition "inversion" in kvm_cpu_get_extint(), only
present in the missing companion patch. Users reported that this manifested as
dosemu2 (running in KVM mode) to be stuck in kernel 4.15.0-136 and -137, while
works fine in 4.15.0-135 and the
+ -137 plus the companion patch.
+
+ * So, we hereby backport the companion commit, originally upstream
+ patch: 72c3bcdcda ("KVM: x86: handle !lapic_in_kernel case in
+ kvm_cpu_*_extint") [4]
+
+ [Test Case]
+ * The test case proposed was the reported bug: try running dosemu2 (with kvm
mode enabled) and it fails without the companion commit.
+
+ * In order to test the correctness of both fixes together, we could rely
+ in the test proposed in [0] (running a guest with "noapic"), but it
+ wasn't consistent and the VMM wasn't mentioned, so we might have a
+ workaround mechanism in qemu, for example, preventing such test to
+ reproduce the issue.
+
+ [Where problems could occur]
+ * Since this is a KVM core modification, it could affect interrupt handling
in KVM but without the fix, we are already experiencing a bug. Also, both
commits were backported to 5.4.y and 4.19.y, so Focal and subsequent released
are already running with them.
+
+ [0]
+
https://lore.kernel.org/kvm/62918f65ec78f8990278a6a0db0567968fa23e49.ca...@infradead.org/
+
+ [1]
+ https://lore.kernel.org/kvm/20201127112114.3219360-1-pbonz...@redhat.com/
+
+ [2] http://git.kernel.org/linus/71cc849b70
+
+ [3]
+
https://lore.kernel.org/stable/d29c4b25-33f6-8d99-7a45-8f4e06f5a...@redhat.com/
+
+ [4] http://git.kernel.org/linus/72c3bcdcda
+
+
+
+
With the latest kernel 4.15.0-136 updates on ubuntu 18.04 and ubuntu
- 16.04, dosemu2 with kvm freezes boot.
+ 16.04, dosemu2 with kvm freezes boot.
dosemu2 source: https://github.com/dosemu2/dosemu2
dosemu2 package can be obtained from
https://launchpad.net/~dosemu2/+archive/ubuntu/ppa
1. ubuntu version
lsb_release -rd
- Description: Ubuntu 18.04.5 LTS
- Release: 18.04
+ Description: Ubuntu 18.04.5 LTS
+ Release: 18.04
2. package version
$ apt-cache policy dosemu2
dosemu2:
Installed: (none)
Candidate: (none)
Version table:
2.0~pre8-2 -1
100 /var/lib/dpkg/status
3. What is expected to happen: The dosemu program runs fine as in previous
kernel version
4. What happened instead: The dosemu freezes on loading
I have also reported this problem to dosemu2 developer, here is my bug report:
https://github.com/dosemu2/dosemu2/issues/1404
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Guilherme G. Piccoli (gpiccoli)
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https://bugs.launchpad.net/bugs/1917138
Title:
Bionic kernel 4.15.0-136 causes dosemu2 (with kvm mode) freezes due to
lack of KVM patch
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