This bug was fixed in the package linux - 4.4.0-98.121
---------------
linux (4.4.0-98.121) xenial; urgency=low
* linux: 4.4.0-98.121 -proposed tracker (LP: #1722299)
* Controller lockup detected on ProLiant DL380 Gen9 with P440 Controller
(LP: #1720359)
- scsi: hpsa: limit transfer length to 1MB
* [Dell Docking IE][0bda:8153] Realtek USB Ethernet leads to system hang
(LP: #1720977)
- r8152: fix the list rx_done may be used without initialization
* Add installer support for Broadcom BCM573xx network drivers. (LP: #1720466)
- d-i: Add bnxt_en to nic-modules.
* snapcraft.yaml: add dpkg-dev to the build deps (LP: #1718886)
- snapcraft.yaml: add dpkg-dev to the build deps
* Support setting I2C_TIMEOUT via ioctl for i2c-designware (LP: #1718578)
- i2c: designware: Use transfer timeout from ioctl I2C_TIMEOUT
* 5U84 - ses driver isn't binding right - cannot blink lights on 1 of the 2
5u84 (LP: #1693369)
- scsi_transport_sas: add function to get SAS endpoint address
- ses: fix discovery of SATA devices in SAS enclosures
- scsi: sas: provide stub implementation for scsi_is_sas_rphy
- scsi: ses: Fix SAS device detection in enclosure
* multipath -ll is not showing the disks which are actually multipath
(LP: #1718397)
- fs: aio: fix the increment of aio-nr and counting against aio-max-nr
* Support Dell Wireless DW5819/5818 WWAN devices (LP: #1721455)
- SAUCE: USB: serial: qcserial: add Dell DW5818, DW5819
* CVE-2017-10911
- xen-blkback: don't leak stack data via response ring
* implement 'complain mode' in seccomp for developer mode with snaps
(LP: #1567597)
- seccomp: Provide matching filter for introspection
- seccomp: Sysctl to display available actions
- seccomp: Operation for checking if an action is available
- seccomp: Sysctl to configure actions that are allowed to be logged
- seccomp: Selftest for detection of filter flag support
- seccomp: Action to log before allowing
* implement errno action logging in seccomp for strict mode with snaps
(LP: #1721676)
- seccomp: Provide matching filter for introspection
- seccomp: Sysctl to display available actions
- seccomp: Operation for checking if an action is available
- seccomp: Sysctl to configure actions that are allowed to be logged
- seccomp: Selftest for detection of filter flag support
- seccomp: Filter flag to log all actions except SECCOMP_RET_ALLOW
* [Xenial] update OpenNSL kernel modules to 6.5.10 (LP: #1721511)
- SAUCE: update OpenNSL kernel modules to 6.5.10
* Xenial update to 4.4.90 stable release (LP: #1721550)
- cifs: release auth_key.response for reconnect.
- mac80211: flush hw_roc_start work before cancelling the ROC
- KVM: PPC: Book3S: Fix race and leak in kvm_vm_ioctl_create_spapr_tce()
- tracing: Fix trace_pipe behavior for instance traces
- tracing: Erase irqsoff trace with empty write
- md/raid5: fix a race condition in stripe batch
- md/raid5: preserve STRIPE_ON_UNPLUG_LIST in break_stripe_batch_list
- scsi: scsi_transport_iscsi: fix the issue that iscsi_if_rx doesn't parse
nlmsg properly
- crypto: talitos - Don't provide setkey for non hmac hashing algs.
- crypto: talitos - fix sha224
- KEYS: fix writing past end of user-supplied buffer in keyring_read()
- KEYS: prevent creating a different user's keyrings
- KEYS: prevent KEYCTL_READ on negative key
- powerpc/pseries: Fix parent_dn reference leak in add_dt_node()
- Fix SMB3.1.1 guest authentication to Samba
- SMB: Validate negotiate (to protect against downgrade) even if signing off
- SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags
- vfs: Return -ENXIO for negative SEEK_HOLE / SEEK_DATA offsets
- nl80211: check for the required netlink attributes presence
- bsg-lib: don't free job in bsg_prepare_job
- seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter()
- arm64: Make sure SPsel is always set
- arm64: fault: Route pte translation faults via do_translation_fault
- KVM: VMX: Do not BUG() on out-of-bounds guest IRQ
- kvm: nVMX: Don't allow L2 to access the hardware CR8
- PCI: Fix race condition with driver_override
- btrfs: fix NULL pointer dereference from free_reloc_roots()
- btrfs: propagate error to btrfs_cmp_data_prepare caller
- btrfs: prevent to set invalid default subvolid
- x86/fpu: Don't let userspace set bogus xcomp_bv
- gfs2: Fix debugfs glocks dump
- timer/sysclt: Restrict timer migration sysctl values to 0 and 1
- KVM: VMX: do not change SN bit in vmx_update_pi_irte()
- KVM: VMX: remove WARN_ON_ONCE in kvm_vcpu_trigger_posted_interrupt
- cxl: Fix driver use count
- dmaengine: mmp-pdma: add number of requestors
- ARM: pxa: add the number of DMA requestor lines
- ARM: pxa: fix the number of DMA requestor lines
- KVM: VMX: use cmpxchg64
- video: fbdev: aty: do not leak uninitialized padding in clk to userspace
- swiotlb-xen: implement xen_swiotlb_dma_mmap callback
- fix xen_swiotlb_dma_mmap prototype
- Linux 4.4.90
* Xenial update to 4.4.89 stable release (LP: #1721477)
- ipv6: accept 64k - 1 packet length in ip6_find_1stfragopt()
- ipv6: add rcu grace period before freeing fib6_node
- ipv6: fix sparse warning on rt6i_node
- qlge: avoid memcpy buffer overflow
- Revert "net: phy: Correctly process PHY_HALTED in phy_stop_machine()"
- Revert "net: use lib/percpu_counter API for fragmentation mem accounting"
- Revert "net: fix percpu memory leaks"
- gianfar: Fix Tx flow control deactivation
- ipv6: fix memory leak with multiple tables during netns destruction
- ipv6: fix typo in fib6_net_exit()
- f2fs: check hot_data for roll-forward recovery
- x86/fsgsbase/64: Report FSBASE and GSBASE correctly in core dumps
- md/raid5: release/flush io in raid5_do_work()
- nfsd: Fix general protection fault in release_lock_stateid()
- mm: prevent double decrease of nr_reserved_highatomic
- tty: improve tty_insert_flip_char() fast path
- tty: improve tty_insert_flip_char() slow path
- tty: fix __tty_insert_flip_char regression
- Input: i8042 - add Gigabyte P57 to the keyboard reset table
- MIPS: math-emu: <MAX|MAXA|MIN|MINA>.<D|S>: Fix quiet NaN propagation
- MIPS: math-emu: <MAX|MAXA|MIN|MINA>.<D|S>: Fix cases of both inputs zero
- MIPS: math-emu: <MAX|MIN>.<D|S>: Fix cases of both inputs negative
- MIPS: math-emu: <MAXA|MINA>.<D|S>: Fix cases of input values with opposite
signs
- MIPS: math-emu: <MAXA|MINA>.<D|S>: Fix cases of both infinite inputs
- MIPS: math-emu: MINA.<D|S>: Fix some cases of infinity and zero inputs
- crypto: AF_ALG - remove SGL terminator indicator when chaining
- ext4: fix incorrect quotaoff if the quota feature is enabled
- ext4: fix quota inconsistency during orphan cleanup for read-only mounts
- powerpc: Fix DAR reporting when alignment handler faults
- block: Relax a check in blk_start_queue()
- md/bitmap: disable bitmap_resize for file-backed bitmaps.
- skd: Avoid that module unloading triggers a use-after-free
- skd: Submit requests to firmware before triggering the doorbell
- scsi: zfcp: fix queuecommand for scsi_eh commands when DIX enabled
- scsi: zfcp: add handling for FCP_RESID_OVER to the fcp ingress path
- scsi: zfcp: fix capping of unsuccessful GPN_FT SAN response trace records
- scsi: zfcp: fix passing fsf_req to SCSI trace on TMF to correlate with HBA
- scsi: zfcp: fix missing trace records for early returns in TMF eh handlers
- scsi: zfcp: fix payload with full FCP_RSP IU in SCSI trace records
- scsi: zfcp: trace HBA FSF response by default on dismiss or timedout late
response
- scsi: zfcp: trace high part of "new" 64 bit SCSI LUN
- scsi: megaraid_sas: Check valid aen class range to avoid kernel panic
- scsi: megaraid_sas: Return pended IOCTLs with cmd_status
MFI_STAT_WRONG_STATE in case adapter is dead
- scsi: storvsc: fix memory leak on ring buffer busy
- scsi: sg: remove 'save_scat_len'
- scsi: sg: use standard lists for sg_requests
- scsi: sg: off by one in sg_ioctl()
- scsi: sg: factor out sg_fill_request_table()
- scsi: sg: fixup infoleak when using SG_GET_REQUEST_TABLE
- scsi: qla2xxx: Fix an integer overflow in sysfs code
- ftrace: Fix selftest goto location on error
- tracing: Apply trace_clock changes to instance max buffer
- ARC: Re-enable MMU upon Machine Check exception
- PCI: shpchp: Enable bridge bus mastering if MSI is enabled
- media: v4l2-compat-ioctl32: Fix timespec conversion
- media: uvcvideo: Prevent heap overflow when accessing mapped controls
- bcache: initialize dirty stripes in flash_dev_run()
- bcache: Fix leak of bdev reference
- bcache: do not subtract sectors_to_gc for bypassed IO
- bcache: correct cache_dirty_target in __update_writeback_rate()
- bcache: Correct return value for sysfs attach errors
- bcache: fix for gc and write-back race
- bcache: fix bch_hprint crash and improve output
- ftrace: Fix memleak when unregistering dynamic ops when tracing disabled
- Linux 4.4.89
* ETPS/2 Elantech Touchpad inconsistently detected (Gigabyte P57W laptop)
(LP: #1594214)
- Input: i8042 - add Gigabyte P57 to the keyboard reset table
* Xenial update to 4.4.88 stable release (LP: #1718195)
- usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard
- USB: serial: option: add support for D-Link DWM-157 C1
- usb: Add device quirk for Logitech HD Pro Webcam C920-C
- usb:xhci:Fix regression when ATI chipsets detected
- USB: core: Avoid race of async_completed() w/ usbdev_release()
- staging/rts5208: fix incorrect shift to extract upper nybble
- driver core: bus: Fix a potential double free
- intel_th: pci: Add Cannon Lake PCH-H support
- intel_th: pci: Add Cannon Lake PCH-LP support
- ath10k: fix memory leak in rx ring buffer allocation
- rtlwifi: rtl_pci_probe: Fix fail path of _rtl_pci_find_adapter
- Bluetooth: Add support of 13d3:3494 RTL8723BE device
- dlm: avoid double-free on error path in dlm_device_{register,unregister}
- mwifiex: correct channel stat buffer overflows
- drm/nouveau/pci/msi: disable MSI on big-endian platforms by default
- workqueue: Fix flag collision
- cs5536: add support for IDE controller variant
- scsi: sg: protect against races between mmap() and SG_SET_RESERVED_SIZE
- scsi: sg: recheck MMAP_IO request length with lock held
- drm: adv7511: really enable interrupts for EDID detection
- drm/bridge: adv7511: Fix mutex deadlock when interrupts are disabled
- drm/bridge: adv7511: Use work_struct to defer hotplug handing to out of
irq
context
- drm/bridge: adv7511: Switch to using drm_kms_helper_hotplug_event()
- drm/bridge: adv7511: Re-write the i2c address before EDID probing
- btrfs: resume qgroup rescan on rw remount
- locktorture: Fix potential memory leak with rw lock test
- ALSA: msnd: Optimize / harden DSP and MIDI loops
- ARM: 8692/1: mm: abort uaccess retries upon fatal signal
- NFS: Fix 2 use after free issues in the I/O code
- xfs: XFS_IS_REALTIME_INODE() should be false if no rt device present
- Linux 4.4.88
* Kernel has troule recognizing Corsair Strafe RGB keyboard (LP: #1678477)
- usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard
-- Thadeu Lima de Souza Cascardo <casca...@canonical.com> Tue, 10 Oct
2017 08:52:24 -0300
** Changed in: linux (Ubuntu Xenial)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1718397
Title:
multipath -ll is not showing the disks which are actually multipath
Status in The Ubuntu-power-systems project:
Fix Committed
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
Status in linux source package in Zesty:
Fix Released
Status in linux source package in Artful:
Fix Released
Bug description:
[Impact]
* The number of available AIO contexts is severely limited
on systems with a large number of possible CPUs
(e.g., IBM POWER8 processors w/ 20ish cores * 8 threads/core,
and other multithreaded server-class processors).
* This prevents application such as multipath/directio checker
to provide all of the available devices to the system.
* Other applications which depend on AIO can be affected/limited.
* The patch fixes how aio increments the number of active contexts
(seen in /proc/sys/fs/aio-nr) and checks that against the global
limit (seen in /proc/sys/fs/aio-max-nr).
[Test Case]
* A synthetic test-case is attached (io_setup_v2.c) and demonstrated
(original/patched kernels) in comment #4.
* Trying to perform multipath discovery in debug/verbose mode
(i.e., "multipath -v3" command) with sufficient number of
individual paths using the "directio" path checker should
demonstrate the problem/solution as well (i.e., presence or
not of "io_setup failed" messages).
[Regression Potential]
* Note the fix is trivial and has been tested by several users,
even caused the introduction of a new test-case in "libaio";
(but that can never be a strong enough reason for no more errors).
* Applications which use aio with small "nr_events" value as argument
to "io_setup()" now have access to a much larger number of aio contexts;
but hopefully those apps are already only requesting what they need,
not trying to get more and more.
* Applications which relied in the _incorrect_ behavior of
'/proc/sys/fs/aio-nr'
being possibly greater than '/proc/sys/fs/aio-max-nr' might have problems,
but those apps should be fixed.
Problem Description
=================================
I am facing this issue for Texan Flash storage 840 disks which are coming
from coho and salfish adapter
coho adapter with 840 storage is 3G disks and salfish adapter with
840 is 12G disks
I am able to see those disks in lsblk o/p but not in multipath -ll
comamnd
0004:01:00.0 Coho: Saturn-X U78C9.001.WZS0060-P1-C6
0x10000090fa2a51f8 host10 Online
0004:01:00.1 Coho: Saturn-X U78C9.001.WZS0060-P1-C6
0x10000090fa2a51f9 host11 Online
0005:09:00.0 Sailfish: QLogic 8GB U78C9.001.WZS0060-P1-C9
0x21000024ff787778 host2 Online
0005:09:00.1 Sailfish: QLogic 8GB U78C9.001.WZS0060-P1-C9
0x21000024ff787779 host4 Online
root@luckyv1:/dev/disk# multipath -ll | grep "size=3.0G" -B 1
root@luckyv1:/dev/disk# multipath -ll | grep "size=12G" -B 1
root@luckyv1:/dev/disk#
== Comment: #3 - Luciano Chavez <cha...@us.ibm.com> - 2016-09-20 20:22:20 ==
I edited /etc/multipath.conf and added
verbosity 6
to crank up the output and ran multipath -ll and saved it off to a
text file (attached). All the using the directio checker failed and
those using the tur checker seem to work.
Sep 20 20:07:36 | loading //lib/multipath/libcheckdirectio.so checker
Sep 20 20:07:36 | loading //lib/multipath/libprioconst.so prioritizer
Sep 20 20:07:36 | Discover device
/sys/devices/pci0000:00/0000:00:00.0/0000:01:00.0/host3/rport-3:0-2/target3:0:0/3:0:0:0/block/sdai
Sep 20 20:07:36 | sdai: udev property ID_WWN whitelisted
Sep 20 20:07:36 | sdai: not found in pathvec
Sep 20 20:07:36 | sdai: mask = 0x25
Sep 20 20:07:36 | sdai: dev_t = 66:32
Sep 20 20:07:36 | open
'/sys/devices/pci0000:00/0000:00:00.0/0000:01:00.0/host3/rport-3:0-2/target3:0:0/3:0:0:0/block/sdai/size'
Sep 20 20:07:36 | sdai: size = 20971520
Sep 20 20:07:36 | sdai: vendor = IBM
Sep 20 20:07:36 | sdai: product = FlashSystem-9840
Sep 20 20:07:36 | sdai: rev = 1442
Sep 20 20:07:36 | sdai: h:b:t:l = 3:0:0:0
Sep 20 20:07:36 | SCSI target 3:0:0 -> FC rport 3:0-2
Sep 20 20:07:36 | sdai: tgt_node_name = 0x500507605e839800
Sep 20 20:07:36 | open
'/sys/devices/pci0000:00/0000:00:00.0/0000:01:00.0/host3/rport-3:0-2/target3:0:0/3:0:0:0/state'
Sep 20 20:07:36 | sdai: path state = running
Sep 20 20:07:36 | sdai: get_state
Sep 20 20:07:36 | sdai: path_checker = directio (internal default)
Sep 20 20:07:36 | sdai: checker timeout = 30 ms (internal default)
Sep 20 20:07:36 | io_setup failed
Sep 20 20:07:36 | sdai: checker init failed
== Comment: #7 - Mauricio Faria De Oliveira <mauri...@br.ibm.com> -
2016-09-27 18:32:57 ==
The function is failing at the io_setup() system call.
@ checkers/directio.c
int libcheck_init (struct checker * c)
{
unsigned long pgsize = getpagesize();
struct directio_context * ct;
long flags;
ct = malloc(sizeof(struct directio_context));
if (!ct)
return 1;
memset(ct, 0, sizeof(struct directio_context));
if (io_setup(1, &ct->ioctx) != 0) {
condlog(1, "io_setup failed");
free(ct);
return 1;
}
<...>
The syscall is failing w/ EAGAIN
# grep ^io_setup multipath_-v2_-d.strace
io_setup(1, 0x100163c9130) = -1 EAGAIN (Resource temporarily
unavailable)
io_setup(1, 0x10015bae2c0) = -1 EAGAIN (Resource temporarily
unavailable)
io_setup(1, 0x100164d65a0) = -1 EAGAIN (Resource temporarily
unavailable)
io_setup(1, 0x10016429f20) = -1 EAGAIN (Resource temporarily
unavailable)
io_setup(1, 0x100163535c0) = -1 EAGAIN (Resource temporarily
unavailable)
io_setup(1, 0x10016368510) = -1 EAGAIN (Resource temporarily
unavailable)
<...>
According to the manpage (man 2 io_setup)
NAME
io_setup - create an asynchronous I/O context
DESCRIPTION
The io_setup() system call creates an asynchronous I/O context
suitable for concurrently processing nr_events operations. <...>
ERRORS
EAGAIN The specified nr_events exceeds the user's limit of available
events, as defined in /proc/sys/fs/aio-max-nr.
On luckyv1:
root@luckyv1:~/mauricfo/bz146849/sep27# cat /proc/sys/fs/aio-max-nr
65536
root@luckyv1:~/mauricfo/bz146849/sep27# cat /proc/sys/fs/aio-nr
130560
According to linux's Documentation/sysctl/fs.txt [1]
aio-nr & aio-max-nr:
aio-nr is the running total of the number of events specified on the
io_setup system call for all currently active aio contexts. If aio-nr
reaches aio-max-nr then io_setup will fail with EAGAIN. Note that
raising aio-max-nr does not result in the pre-allocation or re-sizing
of any kernel data structures.
Interestingly, aio-nr is greater than aio-max-nr. Hm.
Increased aio-max-nr to 262144, and could get some more maps created.
== Comment: #8 - Mauricio Faria De Oliveira <mauri...@br.ibm.com> -
2016-09-27 18:56:08 ==
This attached test-case demonstrates that for each io_setup() request of 1
nr_event, actually 1280 seem to be allocated.
root@luckyv1:~/mauricfo/bz146849/sep27# gcc -o io_setup io_setup.c
-laio
root@luckyv1:~/mauricfo/bz146849/sep27# cat /proc/sys/fs/aio-nr
0
root@luckyv1:~/mauricfo/bz146849/sep27# ./io_setup &
[1] 12352
io_setup rc = 0
sleeping 10 seconds...
root@luckyv1:~/mauricfo/bz146849/sep27# cat /proc/sys/fs/aio-nr
1280
<...>
io_destroy rc = 0
[1]+ Done ./io_setup
root@luckyv1:~/mauricfo/bz146849/sep27# cat /proc/sys/fs/aio-nr
0
== Comment: #45 - Mauricio Faria De Oliveira <mauri...@br.ibm.com> -
2017-09-19 18:32:10 ==
Verification of this commit with the linux-hwe-edge kernel in -proposed,
using the attached test-case "io_setup_v2.c"
commit 2a8a98673c13cb2a61a6476153acf8344adfa992
Author: Mauricio Faria de Oliveira <mauri...@linux.vnet.ibm.com>
Date: Wed Jul 5 10:53:16 2017 -0300
fs: aio: fix the increment of aio-nr and counting against aio-
max-nr
Test-case (attached)
$ sudo apt-get install gcc libaio-dev
$ gcc -o io_setup_v2 io_setup_v2.c -laio
Original kernel:
- Only 409 io_contexts could be allocated,
but that took 130880 [ div by 2, per bug] = 65440 slots out of 65535
$ uname -rv
4.11.0-14-generic #20~16.04.1-Ubuntu SMP Wed Aug 9 09:06:18 UTC 2017
$ ./io_setup_v2 1 65536
nr_events: 1, nr_requests: 65536
rc = -11, i = 409
^Z
[1]+ Stopped ./io_setup_v2 1 65536
$ cat /proc/sys/fs/aio-nr
130880
$ cat /proc/sys/fs/aio-max-nr
65536
$ kill %%
Patched kernel:
- Now 65515 io_contexts could be allocated out of 65535 (much better)
(and reporting correctly, without div by 2.)
$ uname -rv
4.11.0-140-generic #20~16.04.1+bz146489 SMP Tue Sep 19 17:46:15 CDT 2017
$ ./io_setup_v2 1 65536
nr_events: 1, nr_requests: 65536
rc = -12, i = 65515
^Z
[1]+ Stopped ./io_setup_v2 1 65536
$ cat /proc/sys/fs/aio-nr
65515
$ kill %%
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