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Message #36519
[Bug 1867916] Re: Regression in kernel 4.15.0-91 causes kernel panic with Bcache
This bug was fixed in the package linux - 4.4.0-187.217
---------------
linux (4.4.0-187.217) xenial; urgency=medium
* xenial/linux: 4.4.0-187.217 -proposed tracker (LP: #1888274)
* Regression in kernel 4.15.0-91 causes kernel panic with Bcache
(LP: #1867916)
- bcache: check and adjust logical block size for backing devices
* Xenial update: v4.4.230 upstream stable release (LP: #1887011)
- btrfs: cow_file_range() num_bytes and disk_num_bytes are same
- btrfs: fix data block group relocation failure due to concurrent scrub
- mm: fix swap cache node allocation mask
- EDAC/amd64: Read back the scrub rate PCI register on F15h
- mm/slub: fix stack overruns with SLUB_STATS
- usb: usbtest: fix missing kfree(dev->buf) in usbtest_disconnect
- kgdb: Avoid suspicious RCU usage warning
- crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock()
- sched/rt: Show the 'sched_rr_timeslice' SCHED_RR timeslice tuning knob in
milliseconds
- hwmon: (max6697) Make sure the OVERT mask is set correctly
- hwmon: (acpi_power_meter) Fix potential memory leak in
acpi_power_meter_add()
- virtio-blk: free vblk-vqs in error path of virtblk_probe()
- i2c: algo-pca: Add 0x78 as SCL stuck low status for PCA9665
- Revert "ALSA: usb-audio: Improve frames size computation"
- SMB3: Honor 'seal' flag for multiuser mounts
- SMB3: Honor persistent/resilient handle flags for multiuser mounts
- cifs: Fix the target file was deleted when rename failed.
- MIPS: Add missing EHB in mtc0 -> mfc0 sequence for DSPen
- netfilter: nf_conntrack_h323: lost .data_len definition for Q.931/ipv6
- Linux 4.4.230
* Xenial update: v4.4.229 upstream stable release (LP: #1885932)
- s390: fix syscall_get_error for compat processes
- clk: sunxi: Fix incorrect usage of round_down()
- i2c: piix4: Detect secondary SMBus controller on AMD AM4 chipsets
- clk: qcom: msm8916: Fix the address location of pll->config_reg
- ALSA: isa/wavefront: prevent out of bounds write in ioctl
- scsi: qla2xxx: Fix issue with adapter's stopping state
- i2c: pxa: clear all master action bits in i2c_pxa_stop_message()
- usblp: poison URBs upon disconnect
- ps3disk: use the default segment boundary
- vfio/pci: fix memory leaks in alloc_perm_bits()
- mfd: wm8994: Fix driver operation if loaded as modules
- scsi: lpfc: Fix lpfc_nodelist leak when processing unsolicited event
- nfsd: Fix svc_xprt refcnt leak when setup callback client failed
- powerpc/crashkernel: Take "mem=" option into account
- yam: fix possible memory leak in yam_init_driver
- mksysmap: Fix the mismatch of '.L' symbols in System.map
- scsi: sr: Fix sr_probe() missing deallocate of device minor
- scsi: ibmvscsi: Don't send host info in adapter info MAD after LPM
- ALSA: usb-audio: Improve frames size computation
- s390/qdio: put thinint indicator after early error
- tty: hvc: Fix data abort due to race in hvc_open
- staging: sm750fb: add missing case while setting FB_VISUAL
- i2c: pxa: fix i2c_pxa_scream_blue_murder() debug output
- serial: amba-pl011: Make sure we initialize the port.lock spinlock
- drivers: base: Fix NULL pointer exception in __platform_driver_probe() if a
driver developer is foolish
- PCI/ASPM: Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges
- power: supply: smb347-charger: IRQSTAT_D is volatile
- scsi: mpt3sas: Fix double free warnings
- dlm: remove BUG() before panic()
- clk: ti: composite: fix memory leak
- tty: n_gsm: Fix SOF skipping
- tty: n_gsm: Fix waking up upper tty layer when room available
- powerpc/pseries/ras: Fix FWNMI_VALID off by one
- powerpc/ps3: Fix kexec shutdown hang
- vfio-pci: Mask cap zero
- usb/ohci-platform: Fix a warning when hibernating
- USB: host: ehci-mxc: Add error handling in ehci_mxc_drv_probe()
- tty: n_gsm: Fix bogus i++ in gsm_data_kick
- clk: samsung: exynos5433: Add IGNORE_UNUSED flag to sclk_i2s1
- watchdog: da9062: No need to ping manually before setting timeout
- usb: dwc2: gadget: move gadget resume after the core is in L0 state
- USB: gadget: udc: s3c2410_udc: Remove pointless NULL check in
s3c2410_udc_nuke
- usb: gadget: lpc32xx_udc: don't dereference ep pointer before null check
- usb: gadget: fix potential double-free in m66592_probe.
- net: sunrpc: Fix off-by-one issues in 'rpc_ntop6'
- ASoC: fsl_asrc_dma: Fix dma_chan leak when config DMA channel failed
- openrisc: Fix issue with argument clobbering for clone/fork
- gfs2: Allow lock_nolock mount to specify jid=X
- scsi: iscsi: Fix reference count leak in iscsi_boot_create_kobj
- lib/zlib: remove outdated and incorrect pre-increment optimization
- include/linux/bitops.h: avoid clang shift-count-overflow warnings
- elfnote: mark all .note sections SHF_ALLOC
- selftests/net: in timestamping, strncpy needs to preserve null byte
- scsi: acornscsi: Fix an error handling path in acornscsi_probe()
- usb/xhci-plat: Set PM runtime as active on resume
- usb/ehci-platform: Set PM runtime as active on resume
- perf report: Fix NULL pointer dereference in
hists__fprintf_nr_sample_events()
- bcache: fix potential deadlock problem in btree_gc_coalesce
- block: Fix use-after-free in blkdev_get()
- drm: encoder_slave: fix refcouting error for modules
- drm/dp_mst: Reformat drm_dp_check_act_status() a bit
- drm/qxl: Use correct notify port address when creating cursor ring
- selinux: fix double free
- ext4: fix partial cluster initialization when splitting extent
- drm/dp_mst: Increase ACT retry timeout to 3s
- sparc64: fix misuses of access_process_vm() in genregs32_[sg]et()
- block: nr_sects_write(): Disable preemption on seqcount write
- crypto: algboss - don't wait during notifier callback
- kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
- powerpc/kprobes: Fixes for kprobe_lookup_name() on BE
- x86/kprobes: Avoid kretprobe recursion bug
- kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
- e1000e: Do not wake up the system via WOL if device wakeup is disabled
- sched/rt, net: Use CONFIG_PREEMPTION.patch
- net: core: device_rename: Use rwsem instead of a seqcount
- net: Revert "pkt_sched: fq: use proper locking in fq_dump_stats()"
- scsi: scsi_devinfo: handle non-terminated strings
- l2tp: Allow duplicate session creation with UDP
- net: sched: export __netdev_watchdog_up()
- fix a braino in "sparc32: fix register window handling in
genregs32_[gs]et()"
- net: fix memleak in register_netdevice()
- net: usb: ax88179_178a: fix packet alignment padding
- tg3: driver sleeps indefinitely when EEH errors exceed eeh_max_freezes
- ip_tunnel: fix use-after-free in ip_tunnel_lookup()
- tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT
- ip6_gre: fix use-after-free in ip6gre_tunnel_lookup()
- tcp: grow window for OOO packets only for SACK flows
- sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket
- net: Fix the arp error in some cases
- net: Do not clear the sock TX queue in sk_set_socket()
- net: core: reduce recursion limit value
- mld: fix memory leak in ipv6_mc_destroy_dev()
- USB: ohci-sm501: Add missed iounmap() in remove
- usb: dwc2: Postponed gadget registration to the udc class driver
- usb: add USB_QUIRK_DELAY_INIT for Logitech C922
- PCI: Disable MSI for HiSilicon Hip06/Hip07 Root Ports
- USB: ehci: reopen solution for Synopsys HC bug
- usb: host: ehci-exynos: Fix error check in exynos_ehci_probe()
- ALSA: usb-audio: add quirk for Denon DCD-1500RE
- xhci: Fix incorrect EP_STATE_MASK
- xhci: Fix enumeration issue when setting max packet size for FS devices.
- cdc-acm: Add DISABLE_ECHO quirk for Microchip/SMSC chip
- ALSA: usb-audio: uac1: Invalidate ctl on interrupt
- ALSA: usb-audio: allow clock source validity interrupts
- ALSA: usb-audio: Clean up mixer element list traverse
- ALSA: usb-audio: Fix OOB access of mixer element list
- xhci: Poll for U0 after disabling USB2 LPM
- cifs/smb3: Fix data inconsistent when punch hole
- cifs/smb3: Fix data inconsistent when zero file range
- efi/esrt: Fix reference count leak in esre_create_sysfs_entry.
- RDMA/mad: Fix possible memory leak in ib_mad_post_receive_mads()
- ARM: imx5: add missing put_device() call in imx_suspend_alloc_ocram()
- usb: gadget: udc: Potential Oops in error handling code
- netfilter: ipset: fix unaligned atomic access
- sched/core: Fix PI boosting between RT and DEADLINE tasks
- net: alx: fix race condition in alx_remove
- kbuild: improve cc-option to clean up all temporary files
- blktrace: break out of blktrace setup on concurrent calls
- ACPI: sysfs: Fix pm_profile_attr type
- KVM: X86: Fix MSR range of APIC registers in X2APIC mode
- mm/slab: use memzero_explicit() in kzfree()
- ocfs2: load global_inode_alloc
- ocfs2: fix value of OCFS2_INVALID_SLOT
- ocfs2: fix panic on nfs server over ocfs2
- arm64: perf: Report the PC value in REGS_ABI_32 mode
- tracing: Fix event trigger to accept redundant spaces
- drm/radeon: fix fb_div check in ni_init_smc_spll_table()
- sunrpc: fixed rollback in rpc_gssd_dummy_populate()
- SUNRPC: Properly set the @subbuf parameter of xdr_buf_subsegment()
- pNFS/flexfiles: Fix list corruption if the mirror count changes
- NFSv4 fix CLOSE not waiting for direct IO compeletion
- PCI: Disable MSI for HiSilicon Hip06/Hip07 only in Root Port mode
- ALSA: usb-audio: Fix invalid NULL check in snd_emuusb_set_samplerate()
- Linux 4.4.229
* Computer is frozen after suspend (LP: #1867983) // Xenial update: v4.4.229
upstream stable release (LP: #1885932)
- libata: Use per port sync for detach
-- Ian May <ian.may@xxxxxxxxxxxxx> Mon, 20 Jul 2020 14:24:05 -0500
** Changed in: linux (Ubuntu Xenial)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1867916
Title:
Regression in kernel 4.15.0-91 causes kernel panic with Bcache
Status in Linux:
Confirmed
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Xenial:
Fix Released
Status in linux source package in Bionic:
Fix Committed
Status in linux source package in Eoan:
Fix Committed
Status in linux source package in Focal:
Fix Committed
Status in linux source package in Groovy:
Won't Fix
Bug description:
[Impact]
* Users of bcache who manually specified a block size
greater than the page size when creating the device
with 'make-bcache' started to hit a kernel BUG/oops
after kernel upgrades. (This is not widely used.)
* The issue has been exposed with commit ad6bf88a6c19
("block: fix an integer overflow in logical block size")
because it increased the range of values accepted as
logical block size, which used to overflow to zero,
and thus receive a default of 512 via block layer.
* The issue existed previously, but with fewer values
exposed (e.g. 8k, 16k, 32k); the regression reports
happened with larger values (512k) for RAID stripes.
[Fix]
* The upstream commit dcacbc1242c7 ("bcache: check and
adjust logical block size for backing devices") checks
the block size and adjusts it if needed, to the value
of the underlying device's logical block size.
* It is merged as of v5.8-rcN, and sent to v5.7 stable.
[Test Case]
* Run make-bcache with block size greater than page size.
$ sudo make-bcache --bdev $DEV --block 8k
* Expected results: bcache device registered; no BUG/oops.
* Details steps on comment #43.
[Regression Potential]
* Restricted to users who specify a bcache block size
greater than page size.
* Regressions could theoretically manifest on bcache
device probe/register, if the underlying device's
logical block size for whatever triggers issues not
seen previously with the overflow/default 512 bytes.
[Other Info]
* Unstable has the patch on both master/master-5.7.
* Groovy should get it on rebase.
[Original Bug Description]
After upgrading from kernel 4.15.0-88 to 4.15.0-91 one of our systems does not boot any longer. It always crashes during boot with a kernel panic.
I suspect that this crash might be related to Bcache because this is
the only one of our systems where we use Bcache and the kernel panic
appears right after Bcache initialization.
I already checked that this bug still exists in the 4.15.0-92.93
kernel from proposed.
Unfortunately, I cannot do a bisect because this is a critical
production system and we do not have any other system with a similar
configuration.
I attached a screenshot with the trace of the kernel panic.
The last message that appears before the kernel panic (or rather the
last one that I can see - there is a rather long pause between that
message and the panic and I cannot scroll up far enough to ensure that
there are no other messages in between) is:
bcache: register_bcache() error /dev/dm-0: device already registered
When booting with kernel 4.15.0-88 that does not have this problem,
the next message is
bcache: register_bcache() error /dev/dm-12: device already registered
(emitting change event)
After that the next message is:
Begin: Loading essential drivers ... done
This message also appears after the kernel panic, but the boot process
stalls and the system can only be recovered by doing a hardware reset.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-88-generic 4.15.0-88.88
ProcVersionSignature: Ubuntu 4.15.0-88.88-generic 4.15.18
Uname: Linux 4.15.0-88-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Mar 17 21:08 seq
crw-rw---- 1 root audio 116, 33 Mar 17 21:08 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.11
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Wed Mar 18 12:55:18 2020
HibernationDevice: RESUME=UUID=40512ea2-9fce-40f5-8362-5daf955cc26a
InstallationDate: Installed on 2013-07-02 (2450 days ago)
InstallationMedia: Ubuntu-Server 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214)
MachineType: HP ProLiant DL160 G6
PciMultimedia:
ProcFB: 0 mgadrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-88-generic root=/dev/mapper/vg0-root ro nosmt nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw
RelatedPackageVersions:
linux-restricted-modules-4.15.0-88-generic N/A
linux-backports-modules-4.15.0-88-generic N/A
linux-firmware 1.173.16
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
SourcePackage: linux
UpgradeStatus: Upgraded to bionic on 2018-09-23 (541 days ago)
dmi.bios.date: 11/06/2009
dmi.bios.vendor: HP
dmi.bios.version: O33
dmi.chassis.asset.tag: 0191525
dmi.chassis.type: 23
dmi.chassis.vendor: HP
dmi.modalias: dmi:bvnHP:bvrO33:bd11/06/2009:svnHP:pnProLiantDL160G6:pvr:cvnHP:ct23:cvr:
dmi.product.name: ProLiant DL160 G6
dmi.sys.vendor: HP
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