This bug was fixed in the package linux - 4.15.0-101.102
---------------
linux (4.15.0-101.102) bionic; urgency=medium
* bionic/linux: 4.15.0-101.102 -proposed tracker (LP: #1877262)
* 4.15.0-100.101 breaks userspace builds due to a bug in the headers
/usr/include/linux/swab.h of linux-libc-dev (LP: #1877123)
- include/uapi/linux/swab.h: fix userspace breakage, use __BITS_PER_LONG for
swap
* bionic snapdragon 4.15 snap failed Certification testing (LP: #1877657)
- Revert "drm/msm: Use the correct dma_sync calls in msm_gem"
- Revert "drm/msm: stop abusing dma_map/unmap for cache"
linux (4.15.0-100.101) bionic; urgency=medium
* bionic/linux: 4.15.0-100.101 -proposed tracker (LP: #1875878)
* built-using constraints preventing uploads (LP: #1875601)
- temporarily drop Built-Using data
* Add debian/rules targets to compile/run kernel selftests (LP: #1874286)
- [Packaging] add support to compile/run selftests
* getitimer returns it_value=0 erroneously (LP: #1349028)
- [Config] CONTEXT_TRACKING_FORCE policy should be unset
* QEMU/KVM display is garbled when booting from kernel EFI stub due to missing
bochs-drm module (LP: #1872863)
- [Config] Enable CONFIG_DRM_BOCHS as module for all archs
* Backport MPLS patches from 5.3 to 4.15 (LP: #1851446)
- net/mlx5e: Report netdevice MPLS features
- net: vlan: Inherit MPLS features from parent device
- net: bonding: Inherit MPLS features from slave devices
- net/mlx5e: Move to HW checksumming advertising
* LIO hanging in iscsit_free_session and iscsit_stop_session (LP: #1871688)
- scsi: target: remove boilerplate code
- scsi: target: fix hang when multiple threads try to destroy the same iscsi
session
- scsi: target: iscsi: calling iscsit_stop_session() inside
iscsit_close_session() has no effect
* Add hw timestamps to received skbs in peak_canfd (LP: #1874124)
- can: peak_canfd: provide hw timestamps in rx skbs
* Bionic update: upstream stable patchset 2020-04-23 (LP: #1874502)
- ARM: dts: sun8i-a83t-tbs-a711: HM5065 doesn't like such a high voltage
- bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads
- net: vxge: fix wrong __VA_ARGS__ usage
- hinic: fix a bug of waitting for IO stopped
- hinic: fix wrong para of wait_for_completion_timeout
- cxgb4/ptp: pass the sign of offset delta in FW CMD
- qlcnic: Fix bad kzalloc null test
- i2c: st: fix missing struct parameter description
- firmware: arm_sdei: fix double-lock on hibernate with shared events
- null_blk: Fix the null_add_dev() error path
- null_blk: Handle null_add_dev() failures properly
- null_blk: fix spurious IO errors after failed past-wp access
- xhci: bail out early if driver can't accress host in resume
- x86: Don't let pgprot_modify() change the page encryption bit
- block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices
- irqchip/versatile-fpga: Handle chained IRQs properly
- sched: Avoid scale real weight down to zero
- selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
- PCI/switchtec: Fix init_completion race condition with poll_wait()
- libata: Remove extra scsi_host_put() in ata_scsi_add_hosts()
- gfs2: Don't demote a glock until its revokes are written
- x86/boot: Use unsigned comparison for addresses
- efi/x86: Ignore the memory attributes table on i386
- genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy()
- block: Fix use-after-free issue accessing struct io_cq
- usb: dwc3: core: add support for disabling SS instances in park mode
- irqchip/gic-v4: Provide irq_retrigger to avoid circular locking dependency
- md: check arrays is suspended in mddev_detach before call quiesce
operations
- locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
- block, bfq: fix use-after-free in bfq_idle_slice_timer_body
- btrfs: qgroup: ensure qgroup_rescan_running is only set when the worker is
at least queued
- btrfs: remove a BUG_ON() from merge_reloc_roots()
- btrfs: track reloc roots based on their commit root bytenr
- uapi: rename ext2_swab() to swab() and share globally in swab.h
- slub: improve bit diffusion for freelist ptr obfuscation
- ASoC: fix regwmask
- ASoC: dapm: connect virtual mux with default value
- ASoC: dpcm: allow start or stop during pause for backend
- ASoC: topology: use name_prefix for new kcontrol
- usb: gadget: f_fs: Fix use after free issue as part of queue failure
- usb: gadget: composite: Inform controller driver of self-powered
- ALSA: usb-audio: Add mixer workaround for TRX40 and co
- ALSA: hda: Add driver blacklist
- ALSA: hda: Fix potential access overflow in beep helper
- ALSA: ice1724: Fix invalid access for enumerated ctl items
- ALSA: pcm: oss: Fix regression by buffer overflow fix
- ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256
- ALSA: hda/realtek - Set principled PC Beep configuration for ALC256
- ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups
- ALSA: hda/realtek - Add quirk for MSI GL63
- media: ti-vpe: cal: fix disable_irqs to only the intended target
- acpi/x86: ignore unspecified bit positions in the ACPI global lock field
- thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n
- nvme-fc: Revert "add module to ops template to allow module references"
- nvme: Treat discovery subsystems as unique subsystems
- PCI/ASPM: Clear the correct bits when enabling L1 substates
- PCI: Add boot interrupt quirk mechanism for Xeon chipsets
- PCI: endpoint: Fix for concurrent memory allocation in OB address region
- irqchip/versatile-fpga: Apply clear-mask earlier
- pstore: pstore_ftrace_seq_next should increase position index
- MIPS/tlbex: Fix LDDIR usage in setup_pw() for Loongson-3
- MIPS: OCTEON: irq: Fix potential NULL pointer dereference
- ath9k: Handle txpower changes even when TPC is disabled
- signal: Extend exec_id to 64bits
- x86/entry/32: Add missing ASM_CLAC to general_protection entry
- KVM: nVMX: Properly handle userspace interrupt window request
- KVM: s390: vsie: Fix region 1 ASCE sanity shadow address checks
- KVM: s390: vsie: Fix delivery of addressing exceptions
- KVM: x86: Allocate new rmap and large page tracking when moving memslot
- KVM: VMX: Always VMCLEAR in-use VMCSes during crash with kexec support
- CIFS: Fix bug which the return value by asynchronous read is error
- Btrfs: fix crash during unmount due to race with delayed inode workers
- btrfs: set update the uuid generation as soon as possible
- btrfs: drop block from cache on error in relocation
- btrfs: fix missing semaphore unlock in btrfs_sync_file
- crypto: mxs-dcp - fix scatterlist linearization for hash
- powerpc/pseries: Drop pointless static qualifier in vpa_debugfs_init()
- x86/speculation: Remove redundant arch_smt_update() invocation
- tools: gpio: Fix out-of-tree build regression
- mm: Use fixed constant in page_frag_alloc instead of size + 1
- dm verity fec: fix memory leak in verity_fec_dtr
- scsi: zfcp: fix missing erp_lock in port recovery trigger for
point-to-point
- arm64: armv8_deprecated: Fix undef_hook mask for thumb setend
- selftests: vm: drop dependencies on page flags from mlock2 tests
- rtc: omap: Use define directive for PIN_CONFIG_ACTIVE_HIGH
- drm/etnaviv: rework perfmon query infrastructure
- NFS: Fix a page leak in nfs_destroy_unlinked_subrequests()
- ext4: fix a data race at inode->i_blocks
- fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
- ocfs2: no need try to truncate file beyond i_size
- perf tools: Support Python 3.8+ in Makefile
- s390/diag: fix display of diagnose call statistics
- Input: i8042 - add Acer Aspire 5738z to nomux list
- kmod: make request_module() return an error when autoloading is disabled
- cpufreq: powernv: Fix use-after-free
- hfsplus: fix crash and filesystem corruption when deleting files
- ipmi: fix hung processes in __get_guid()
- powerpc/powernv/idle: Restore AMR/UAMOR/AMOR after idle
- powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
- powerpc/hash64/devmap: Use H_PAGE_THP_HUGE when setting up huge devmap PTE
entries
- powerpc/xive: Use XIVE_BAD_IRQ instead of zero to catch non configured
IPIs
- powerpc/kprobes: Ignore traps that happened in real mode
- scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug
- powerpc: Add attributes for setjmp/longjmp
- powerpc: Make setjmp/longjmp signature standard
- btrfs: use nofs allocations for running delayed items
- dm zoned: remove duplicate nr_rnd_zones increase in dmz_init_zone()
- crypto: caam - update xts sector size for large input length
- Revert "drm/dp_mst: Remove VCPI while disabling topology mgr"
- drm/dp_mst: Fix clearing payload state on topology disable
- drm: Remove PageReserved manipulation from drm_pci_alloc
- ftrace/kprobe: Show the maxactive number on kprobe_events
- powerpc/fsl_booke: Avoid creating duplicate tlb1 entry
- misc: echo: Remove unnecessary parentheses and simplify check for zero
- etnaviv: perfmon: fix total and idle HI cyleces readout
- mfd: dln2: Fix sanity checking for endpoints
- efi/x86: Fix the deletion of variables in mixed mode
* Panic on suspend/resume Kernel panic - not syncing: stack-protector: Kernel
stack is corrupted in: sata_pmp_eh_recover+0xa2b/0xa40 (LP: #1821434) //
Bionic update: upstream stable patchset 2020-04-23 (LP: #1874502)
- libata: Return correct status in sata_pmp_eh_recover_pm() when
ATA_DFLAG_DETACH is set
* Bionic update: upstream stable patchset 2020-04-15 (LP: #1873043)
- ipv4: fix a RCU-list lock in fib_triestat_seq_show
- net, ip_tunnel: fix interface lookup with no key
- sctp: fix refcount bug in sctp_wfree
- sctp: fix possibly using a bad saddr with a given dst
- drm/bochs: downgrade pci_request_region failure from error to warning
- initramfs: restore default compression behavior
- tools/power turbostat: Fix gcc build warnings
- drm/etnaviv: replace MMU flush marker with flush sequence
- blk-mq: sync the update nr_hw_queues with blk_mq_queue_tag_busy_iter
- blk-mq: Allow blocking queue tag iter callbacks
- misc: pci_endpoint_test: Fix to support > 10 pci-endpoint-test devices
- coresight: do not use the BIT() macro in the UAPI header
- padata: always acquire cpu_hotplug_lock before pinst->lock
- mm: mempolicy: require at least one nodeid for MPOL_PREFERRED
- ipv6: don't auto-add link-local address to lag ports
- net: dsa: bcm_sf2: Ensure correct sub-node is parsed
- net: phy: micrel: kszphy_resume(): add delay after genphy_resume() before
accessing PHY registers
- net: stmmac: dwmac1000: fix out-of-bounds mac address reg setting
- mlxsw: spectrum_flower: Do not stop at FLOW_ACTION_VLAN_MANGLE
- random: always use batched entropy for get_random_u{32,64}
- tools/accounting/getdelays.c: fix netlink attribute length
- hwrng: imx-rngc - fix an error path
- ASoC: jz4740-i2s: Fix divider written at incorrect offset in register
- IB/hfi1: Call kobject_put() when kobject_init_and_add() fails
- IB/hfi1: Fix memory leaks in sysfs registration and unregistration
- ceph: remove the extra slashes in the server path
- ceph: canonicalize server path in place
- Bluetooth: RFCOMM: fix ODEBUG bug in rfcomm_dev_ioctl
- RDMA/cm: Update num_paths in cma_resolve_iboe_route error flow
- fbcon: fix null-ptr-deref in fbcon_switch
- clk: qcom: rcg: Return failure for RCG update
- drm/msm: stop abusing dma_map/unmap for cache
- arm64: Fix size of __early_cpu_boot_status
- rpmsg: glink: Remove chunk size word align warning
- usb: dwc3: don't set gadget->is_otg flag
- drm_dp_mst_topology: fix broken drm_dp_sideband_parse_remote_dpcd_read()
- drm/msm: Use the correct dma_sync calls in msm_gem
- misc: rtsx: set correct pcr_ops for rts522A
- mei: me: add cedar fork device ids
- power: supply: axp288_charger: Add special handling for HP Pavilion x2 10
- rxrpc: Fix sendmsg(MSG_WAITALL) handling
- bitops: protect variables in set_mask_bits() macro
- RDMA/ucma: Put a lock around every call to the rdma_cm layer
- RDMA/cma: Teach lockdep about the order of rtnl and lock
* CVE-2020-11494
- slcan: Don't transmit uninitialized stack data in padding
* add_key05 from ubuntu_ltp_syscalls failed (LP: #1869644)
- KEYS: reaching the keys quotas correctly
-- Kleber Sacilotto de Souza <kleber.so...@canonical.com> Mon, 11 May
2020 11:08:26 +0200
** Changed in: linux (Ubuntu Bionic)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-11494
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https://bugs.launchpad.net/bugs/1349028
Title:
getitimer returns it_value=0 erroneously
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Trusty:
Fix Released
Status in linux source package in Utopic:
Fix Released
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Bionic:
Fix Released
Status in linux source package in Eoan:
Fix Committed
Status in linux source package in Focal:
Fix Released
Bug description:
According to the 'getitimer()' man page: "The element it_value is set
to the amount of time remaining on the timer, or zero if the timer is
disabled. Similarly, it_interval is set to the reset value."
As such the following Perl program should never exit:
use Time::HiRes;
$SIG{VTALRM} = sub { };
Time::HiRes::setitimer(&Time::HiRes::ITIMER_VIRTUAL, 0.5, 0.4);
while (1) {
my @t = Time::HiRes::getitimer(&Time::HiRes::ITIMER_VIRTUAL);
exit 0 if $t[0] == 0;
}
and on linux-image 3.11.0-18-generic (and all other systems tested) it
loops forever but 3.13.0-32-generic it exits. Have not bisected
between those kernels, nor am I likely to be able to do so soon.
This Perl program shows the timer countdown:
use Time::HiRes;
my $r = [Time::HiRes::gettimeofday()];
sub display {
my ($desc) = @_;
my @t = Time::HiRes::getitimer(&Time::HiRes::ITIMER_VIRTUAL);
my $i = Time::HiRes::tv_interval($r);
printf "%s: elasped=%.8f; time left=%.6f reset time=%.6f\n", $desc,
$i,@t;
}
$SIG{VTALRM} = sub {
display('VTALRM');
exit;
};
Time::HiRes::setitimer(&Time::HiRes::ITIMER_VIRTUAL, 0.5, 0.4);
while (1) {
display('inloop');
}
on other (working) systems it gives:
inloop: elasped=1.65178400; time left=0.001000 reset time=0.401000
inloop: elasped=1.65184200; time left=0.001000 reset time=0.401000
inloop: elasped=1.65186800; time left=0.001000 reset time=0.401000
inloop: elasped=1.65192300; time left=0.001000 reset time=0.401000
inloop: elasped=1.65198100; time left=0.001000 reset time=0.401000
VTALRM: elasped=1.65209800; time left=0.400000 reset time=0.401000
(end of file)
but on the 3.13.0-32-generic or later kernel I get:
inloop: elasped=0.54692100; time left=0.000033 reset time=0.400000
inloop: elasped=0.54692800; time left=0.000026 reset time=0.400000
inloop: elasped=0.54693500; time left=0.000020 reset time=0.400000
inloop: elasped=0.54694100; time left=0.000013 reset time=0.400000
inloop: elasped=0.54694800; time left=0.000007 reset time=0.400000
inloop: elasped=0.54695500; time left=0.000000 reset time=0.400000
inloop: elasped=0.54696200; time left=0.004000 reset time=0.400000
[...]
VTALRM: elasped=0.55013600; time left=0.397062 reset time=0.400000
(end of file)
The reset time also looks dodgy.
Hardware is an Intel Core i7-920 on Asus P6T Deluxe v2 (X58)
motherboard and hasn't changed.
Requested information:
Ubuntu 3.13.0-32.57-generic 3.13.11.4
Description: Ubuntu 14.04.1 LTS
Release: 14.04
# apt-cache policy linux-image-generic
linux-image-generic:
Installed: 3.13.0.32.38
Candidate: 3.13.0.32.38
Version table:
*** 3.13.0.32.38 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64
Packages
500 http://us.archive.ubuntu.com/ubuntu/ trusty-security/main amd64
Packages
500 http://us.archive.ubuntu.com/ubuntu/ trusty-proposed/main amd64
Packages
500 http://ppa.launchpad.net/canonical-kernel-team/ppa/ubuntu/
trusty/main amd64 Packages
100 /var/lib/dpkg/status
3.13.0.24.28 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
---
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: tivrusky 3009 F.... pulseaudio
/dev/snd/controlC0: tivrusky 3009 F.... pulseaudio
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=c026abdc-9fee-425c-b5ae-020bf6ea2ad6
IwConfig:
eth0 no wireless extensions.
eth1 no wireless extensions.
lo no wireless extensions.
MachineType: System manufacturer System Product Name
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: root=UUID=3ea7a4cb-eade-4906-b545-5133d8c14080 ro quiet
splash
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
RelatedPackageVersions:
linux-restricted-modules-3.13.0-32-generic N/A
linux-backports-modules-3.13.0-32-generic N/A
linux-firmware 1.127.5
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
Tags: trusty
Uname: Linux 3.13.0-32-generic x86_64
UpgradeStatus: Upgraded to trusty on 2014-06-10 (46 days ago)
UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev sambashare
vboxusers
WifiSyslog: Jul 26 20:23:08 zwei NetworkManager[1174]: <info> Policy set
'Wired connection 2' (eth1) as default for IPv6 routing and DNS.
WpaSupplicantLog:
_MarkForUpload: True
dmi.bios.date: 02/04/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0203
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P6T DELUXE V2
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr0203:bd02/04/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6TDELUXEV2:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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