This bug was fixed in the package linux - 4.13.0-45.50
---------------
linux (4.13.0-45.50) artful; urgency=medium
* linux: 4.13.0-45.50 -proposed tracker (LP: #1774124)
* CVE-2018-3639 (x86)
- SAUCE: Set generic SSBD feature for Intel cpus
linux (4.13.0-44.49) artful; urgency=medium
* linux: 4.13.0-44.49 -proposed tracker (LP: #1772951)
* CVE-2018-3639 (x86)
- x86/cpu: Make alternative_msr_write work for 32-bit code
- x86/cpu/AMD: Fix erratum 1076 (CPB bit)
- x86/bugs: Fix the parameters alignment and missing void
- KVM: SVM: Move spec control call after restore of GS
- x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP
- x86/cpufeatures: Disentangle MSR_SPEC_CTRL enumeration from IBRS
- x86/cpufeatures: Disentangle SSBD enumeration
- x86/cpufeatures: Add FEATURE_ZEN
- x86/speculation: Handle HT correctly on AMD
- x86/bugs, KVM: Extend speculation control for VIRT_SPEC_CTRL
- x86/speculation: Add virtualized speculative store bypass disable support
- x86/speculation: Rework speculative_store_bypass_update()
- x86/bugs: Unify x86_spec_ctrl_{set_guest,restore_host}
- x86/bugs: Expose x86_spec_ctrl_base directly
- x86/bugs: Remove x86_spec_ctrl_set()
- x86/bugs: Rework spec_ctrl base and mask logic
- x86/speculation, KVM: Implement support for VIRT_SPEC_CTRL/LS_CFG
- KVM: SVM: Implement VIRT_SPEC_CTRL support for SSBD
- x86/bugs: Rename SSBD_NO to SSB_NO
- KVM: VMX: Expose SSBD properly to guests.
* [Ubuntu 16.04] kernel: fix rwlock implementation (LP: #1761674)
- SAUCE: (no-up) s390: fix rwlock implementation
* CVE-2018-7492
- rds: Fix NULL pointer dereference in __rds_rdma_map
* CVE-2018-8781
- drm: udl: Properly check framebuffer mmap offsets
* fsnotify: Fix fsnotify_mark_connector race (LP: #1765564)
- fsnotify: Fix fsnotify_mark_connector race
* Kernel panic on boot (m1.small in cn-north-1) (LP: #1771679)
- x86/xen: Reset VCPU0 info pointer after shared_info remap
* Suspend to idle: Open lid didn't resume (LP: #1771542)
- ACPI / PM: Do not reconfigure GPEs for suspend-to-idle
* CVE-2018-1092
- ext4: fail ext4_iget for root directory if unallocated
* [SRU][Artful] using vfio-pci on a combination of cn8xxx and some PCI devices
results in a kernel panic. (LP: #1770254)
- PCI: Avoid bus reset if bridge itself is broken
- PCI: Mark Cavium CN8xxx to avoid bus reset
- PCI: Avoid slot reset if bridge itself is broken
* Battery drains when laptop is off (shutdown) (LP: #1745646)
- PCI / PM: Check device_may_wakeup() in pci_enable_wake()
* perf record crash: refcount_inc assertion failed (LP: #1769027)
- perf cgroup: Fix refcount usage
- perf xyarray: Fix wrong processing when closing evsel fd
* Dell Latitude 5490/5590 BIOS update 1.1.9 causes black screen at boot
(LP: #1764194)
- drm/i915/bios: filter out invalid DDC pins from VBT child devices
* Fix an issue that some PCI devices get incorrectly suspended (LP: #1764684)
- PCI / PM: Always check PME wakeup capability for runtime wakeup support
* [SRU][Bionic/Artful] fix false positives in W+X checking (LP: #1769696)
- init: fix false positives in W+X checking
* CVE-2018-1068
- netfilter: ebtables: CONFIG_COMPAT: don't trust userland offsets
* CVE-2018-8087
- mac80211_hwsim: fix possible memory leak in hwsim_new_radio_nl()
* Integrated Webcam Realtek Integrated_Webcam_HD (0bda:58f4) not working in
DELL XPS 13 9370 with firmware 1.50 (LP: #1763748)
- SAUCE: media: uvcvideo: Support realtek's UVC 1.5 device
* unregister_netdevice: waiting for eth0 to become free. Usage count = 5
(LP: #1746474)
- ipv4: convert dst_metrics.refcnt from atomic_t to refcount_t
- xfrm: reuse uncached_list to track xdsts
* Acer Swift sf314-52 power button not managed (LP: #1766054)
- SAUCE: platform/x86: acer-wmi: add another KEY_POWER keycode
* set PINCFG_HEADSET_MIC to parse_flags for Dell precision 3630 (LP: #1766398)
- ALSA: hda/realtek - set PINCFG_HEADSET_MIC to parse_flags
* Change the location for one of two front mics on a lenovo thinkcentre
machine (LP: #1766477)
- ALSA: hda/realtek - adjust the location of one mic
-- Stefan Bader <stefan.ba...@canonical.com> Mon, 28 May 2018 16:10:36
+0200
** Changed in: linux (Ubuntu Artful)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-1068
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-1092
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-3639
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-7492
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-8087
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-8781
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https://bugs.launchpad.net/bugs/1769027
Title:
perf record crash: refcount_inc assertion failed
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Artful:
Fix Released
Bug description:
== SRU Justification ==
This SRU request is for two commits, that are needed for two bug reports. The
first bug(1767204) is marked as a duplicate of the bug used for this SRU
request. The commit(3d8bba9535ac) required to fix the first bug introduced
the second
bug. The second bug is then fixed buy commit cd8dd032f61a.
The first issue is perf crashes due to swapped xyarray function signatures
and is
fixed by commit 3d8bba9535ac.
The second issue is a crash due to "refcount_inc assertion failed".
This second bug is introduced by picking commit 3d8bba9535ac without
picking commit cd8dd032f61a first.
== Fixes ==
cd8dd032f61a ("perf cgroup: Fix refcount usage")
3d8bba9535ac ("perf xyarray: Fix wrong processing when closing evsel fd")
== Regression Potential ==
Low. Limited to perf tool.
== Test Case ==
A test kernel was built with these patches and tested by the original bug
reporter.
The bug reporter states the test kernel resolved the bug.
== Original Bug Description ==
On linux-hwe-tools-4.13.0-39 in xenial:
Trying to run perf record ... --cgroup=mycgroup causes an immediate assertion
failure:
refcount_inc: Assertion `!(!refcount_inc_not_zero(r))' failed.
Confirmed fixed by patching my linux-tools package with this upstream
commit (on top of the commit in bug #1767204):
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-
stable.git/commit/tools/perf/util/cgroup.c?id=cd8dd032f61abeb08d2c03bab4968a9de231a1be
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