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Merge tag '5.0-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb3 fixes from Steve French:
"A set of small smb3 fixes, some fixing various crediting issues
discovered during xfstest runs, five for stable"
* tag '5.0-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: print CIFSMaxBufSize as part of /proc/fs/cifs/DebugData
smb3: add credits we receive from oplock/break PDUs
CIFS: Fix mounts if the client is low on credits
CIFS: Do not assume one credit for async responses
CIFS: Fix credit calculations in compound mid callback
CIFS: Fix credit calculation for encrypted reads with errors
CIFS: Fix credits calculations for reads with errors
CIFS: Do not reconnect TCP session in add_credits()
smb3: Cleanup license mess
CIFS: Fix possible hang during async MTU reads and writes
cifs: fix memory leak of an allocated cifs_ntsd structure
Six fixes, all of which appear to have user visible consequences. The
DMA one is a regression fix from the merge window and of the others,
four are driver specific and one specific to the target code.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Six fixes, all of which appear to have user visible consequences.
The DMA one is a regression fix from the merge window and of the
others, four are driver specific and one specific to the target code"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: Use explicit access size in ufshcd_dump_regs
scsi: tcmu: fix use after free
scsi: csiostor: fix NULL pointer dereference in csio_vport_set_state()
scsi: lpfc: nvmet: avoid hang / use-after-free when destroying targetport
scsi: lpfc: nvme: avoid hang / use-after-free when destroying localport
scsi: communicate max segment size to the DMA mapping code
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Merge tag 'for-linus-20190125' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A collection of fixes for this release. This contains:
- Silence sparse rightfully complaining about non-static wbt
functions (Bart)
- Fixes for the zoned comments/ioctl documentation (Damien)
- direct-io fix that's been lingering for a while (Ernesto)
- cgroup writeback fix (Tejun)
- Set of NVMe patches for nvme-rdma/tcp (Sagi, Hannes, Raju)
- Block recursion tracking fix (Ming)
- Fix debugfs command flag naming for a few flags (Jianchao)"
* tag 'for-linus-20190125' of git://git.kernel.dk/linux-block:
block: Fix comment typo
uapi: fix ioctl documentation
blk-wbt: Declare local functions static
blk-mq: fix the cmd_flag_name array
nvme-multipath: drop optimization for static ANA group IDs
nvmet-rdma: fix null dereference under heavy load
nvme-rdma: rework queue maps handling
nvme-tcp: fix timeout handler
nvme-rdma: fix timeout handler
writeback: synchronize sync(2) against cgroup writeback membership switches
block: cover another queue enter recursion via BIO_QUEUE_ENTERED
direct-io: allow direct writes to empty inodes
Here are some small char and misc driver fixes to resolve some reported
issues, as well as a number of binderfs fixups that were found after
auditing the filesystem code by Al Viro. As binderfs hasn't been in a
previous release yet, it's good to get these in now before the first
users show up.
All of these have been in linux-next for a bit with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char and misc driver fixes to resolve some
reported issues, as well as a number of binderfs fixups that were
found after auditing the filesystem code by Al Viro. As binderfs
hasn't been in a previous release yet, it's good to get these in now
before the first users show up.
All of these have been in linux-next for a bit with no reported
issues"
* tag 'char-misc-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (26 commits)
i3c: master: Fix an error checking typo in 'cdns_i3c_master_probe()'
binderfs: switch from d_add() to d_instantiate()
binderfs: drop lock in binderfs_binder_ctl_create
binderfs: kill_litter_super() before cleanup
binderfs: rework binderfs_binder_device_create()
binderfs: rework binderfs_fill_super()
binderfs: prevent renaming the control dentry
binderfs: remove outdated comment
binderfs: use __u32 for device numbers
binderfs: use correct include guards in header
misc: pvpanic: fix warning implicit declaration
char/mwave: fix potential Spectre v1 vulnerability
misc: ibmvsm: Fix potential NULL pointer dereference
binderfs: fix error return code in binderfs_fill_super()
mei: me: add denverton innovation engine device IDs
mei: me: mark LBG devices as having dma support
mei: dma: silent the reject message
binderfs: handle !CONFIG_IPC_NS builds
binderfs: reserve devices for initial mount
binderfs: rename header to binderfs.h
...
Here are some small staging driver fixes for 5.0-rc4.
They resolve some reported bugs and add a new device id for one driver.
Nothing major at all, but all good to have.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for 5.0-rc4.
They resolve some reported bugs and add a new device id for one
driver. Nothing major at all, but all good to have.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: android: ion: Support cpu access during dma_buf_detach
staging: rtl8723bs: Fix build error with Clang when inlining is disabled
staging: rtl8188eu: Add device code for D-Link DWA-121 rev B1
staging: vchiq: Fix local event signalling
Staging: wilc1000: unlock on error in init_chip()
staging: wilc1000: fix memory leak in wilc_add_rx_gtk
staging: wilc1000: fix registration frame size
Here are a number of small tty core and serial driver fixes for 5.0-rc4
to resolve some reported issues.
Nothing major, the small serial driver fixes, a tty core fixup for a
crash that was reported, and some good vt fixes from Nicolas Pitre as he
seems to be auditing that chunk of code a lot lately.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are a number of small tty core and serial driver fixes for
5.0-rc4 to resolve some reported issues.
Nothing major, the small serial driver fixes, a tty core fixup for a
crash that was reported, and some good vt fixes from Nicolas Pitre as
he seems to be auditing that chunk of code a lot lately.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling
tty: serial: qcom_geni_serial: Allow mctrl when flow control is disabled
tty: Handle problem if line discipline does not have receive_buf
vgacon: unconfuse vc_origin when using soft scrollback
vt: invoke notifier on screen size change
vt: always call notifier with the console lock held
vt: make vt_console_print() compatible with the unicode screen buffer
tty/n_hdlc: fix __might_sleep warning
serial: 8250: Fix serial8250 initialization crash
uart: Fix crash in uart_write and uart_put_char
Here are a number of small USB and PHY driver fixes for 5.0-rc4.
Nothing major at all, just the usual selection of USB gadget bugfixes,
some new USB serial driver ids, some SPDX fixes, and some PHY driver
fixes for reported issues.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 5.0-rc4.
Nothing major at all, just the usual selection of USB gadget bugfixes,
some new USB serial driver ids, some SPDX fixes, and some PHY driver
fixes for reported issues.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: keyspan_usa: add proper SPDX lines for .h files
USB: EHCI: ehci-mv: add MODULE_DEVICE_TABLE
USB: leds: fix regression in usbport led trigger
usb: chipidea: fix static checker warning for NULL pointer
MAINTAINERS: email address update in MAINTAINERS entries
USB: usbip: delete README file
USB: serial: pl2303: add new PID to support PL2303TB
usb: dwc2: gadget: Fix Remote Wakeup interrupt bit clearing
phy: ath79-usb: Fix the main reset name to match the DT binding
phy: ath79-usb: Fix the power on error path
phy: fix build breakage: add PHY_MODE_SATA
phy: ti: ensure priv is not null before dereferencing it
USB: serial: ftdi_sio: fix GPIO not working in autosuspend
usb: gadget: Potential NULL dereference on allocation error
usb: dwc3: gadget: Fix the uninitialized link_state when udc starts
usb: dwc3: gadget: Clear req->needs_extra_trb flag on cleanup
usb: dwc3: gadget: synchronize_irq dwc irq in suspend
USB: serial: simple: add Motorola Tetra TPG2200 device id
Was helpful in debug for some recent problems.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Otherwise we gradually leak credits leading to potential
hung session.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
If the server doesn't grant us at least 3 credits during the mount
we won't be able to complete it because query path info operation
requires 3 credits. Use the cached file handle if possible to allow
the mount to succeed.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
If we don't receive a response we can't assume that the server
granted one credit. Assume zero credits in such cases.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The current code doesn't do proper accounting for credits
in SMB1 case: it adds one credit per response only if we get
a complete response while it needs to return it unconditionally.
Fix this and also include malformed responses for SMB2+ into
accounting for credits because such responses have Credit
Granted field, thus nothing prevents to get a proper credit
value from them.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
We do need to account for credits received in error responses
to read requests on encrypted sessions.
Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Currently we mark MID as malformed if we get an error from server
in a read response. This leads to not properly processing credits
in the readv callback. Fix this by marking such a response as
normal received response and process it appropriately.
Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
When executing add_credits() we currently call cifs_reconnect()
if the number of credits is zero and there are no requests in
flight. In this case we may call cifs_reconnect() recursively
twice and cause memory corruption given the following sequence
of functions:
mid1.callback() -> add_credits() -> cifs_reconnect() ->
-> mid2.callback() -> add_credits() -> cifs_reconnect().
Fix this by avoiding to call cifs_reconnect() in add_credits()
and checking for zero credits in the demultiplex thread.
Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c:368:13: error: 'dpu_plane_danger_signal_ctrl' defined but not used [-Werror=unused-function]
Fixes: 7b2e7adea7 ("drm/msm/dpu: Make dpu_plane_danger_signal_ctrl void")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Add a few __printf attribute specifiers to routines that
could use them.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The bindings for Qualcomm opp levels changed after being Acked but
before landing. Thus the code in the GPU driver that was relying on
the old bindings is now broken.
Let's change the code to match the new bindings by adjusting the old
string 'qcom,level' to the new string 'opp-level'. See the patch
("dt-bindings: opp: Introduce opp-level bindings").
NOTE: we will do additional cleanup to totally remove the string from
the code and use the new dev_pm_opp_get_level() but we'll do it in a
future patch. This will facilitate getting the important code fix in
sooner without having to deal with cross-maintainer dependencies.
This patch needs to land before the patch ("arm64: dts: sdm845: Add
gpu and gmu device nodes") since if a tree contains the device tree
patch but not this one you'll get a crash at bootup.
Fixes: 4b565ca5a2 ("drm/msm: Add A6XX device support")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Each GPU core only uses one interrupt so we don't to look up
an interrupt by name and thereby we don't need interrupt-names.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Every GPU core only has one interrupt so there isn't any
value in looking up the interrupt by name. Remove the name (which
is legacy anyway) and use platform_get_irq() instead.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
When debugfs is disabled, but coredump is turned on, the adreno driver fails to build:
drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:4: error: 'struct msm_gpu_funcs' has no member named 'show'
.show = adreno_show,
^~~~
drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: note: (near initialization for 'funcs.base')
drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: error: initialization of 'void (*)(struct msm_gpu *, struct msm_gem_submit *, struct msm_file_private *)' from incompatible pointer type 'void (*)(struct msm_gpu *, struct msm_gpu_state *, struct drm_printer *)' [-Werror=incompatible-pointer-types]
drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: note: (near initialization for 'funcs.base.submit')
drivers/gpu/drm/msm/adreno/a4xx_gpu.c:546:4: error: 'struct msm_gpu_funcs' has no member named 'show'
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:1460:4: error: 'struct msm_gpu_funcs' has no member named 'show'
drivers/gpu/drm/msm/adreno/a6xx_gpu.c:769:4: error: 'struct msm_gpu_funcs' has no member named 'show'
drivers/gpu/drm/msm/msm_gpu.c: In function 'msm_gpu_devcoredump_read':
drivers/gpu/drm/msm/msm_gpu.c:289:12: error: 'const struct msm_gpu_funcs' has no member named 'show'
Adjust the #ifdef to make it build again.
Fixes: c0fec7f562 ("drm/msm/gpu: Capture the GPU state on a GPU hang")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Clark <robdclark@gmail.com>
- Fix DM thinp's discard passdown to properly account for extra
reference that is taken to guard against reallocating a block before a
discard has been issued.
- Fix bio-based DM's redundant IO accounting that was occurring for bios
that must be split due to the nature of the DM target (e.g. dm-stripe,
dm-thinp, etc).
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Merge tag 'for-5.0/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix DM crypt's parsing of extended IV arguments.
- Fix DM thinp's discard passdown to properly account for extra
reference that is taken to guard against reallocating a block before
a discard has been issued.
- Fix bio-based DM's redundant IO accounting that was occurring for
bios that must be split due to the nature of the DM target (e.g.
dm-stripe, dm-thinp, etc).
* tag 'for-5.0/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: add missing trace_block_split() to __split_and_process_bio()
dm: fix dm_wq_work() to only use __split_and_process_bio() if appropriate
dm: fix redundant IO accounting for bios that need splitting
dm: fix clone_bio() to trigger blk_recount_segments()
dm thin: fix passdown_double_checking_shared_status()
dm crypt: fix parsing of extended IV arguments
The description of the BLKGETNRZONES zoned block device ioctl was not
added as a comment together with this ioctl definition in commit
65e4e3eee8 ("block: Introduce BLKGETNRZONES ioctl"). Add its
description here.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch avoids that sparse reports the following warnings:
CHECK block/blk-wbt.c
block/blk-wbt.c:600:6: warning: symbol 'wbt_issue' was not declared. Should it be static?
block/blk-wbt.c:620:6: warning: symbol 'wbt_requeue' was not declared. Should it be static?
CC block/blk-wbt.o
block/blk-wbt.c:600:6: warning: no previous prototype for wbt_issue [-Wmissing-prototypes]
void wbt_issue(struct rq_qos *rqos, struct request *rq)
^~~~~~~~~
block/blk-wbt.c:620:6: warning: no previous prototype for wbt_requeue [-Wmissing-prototypes]
void wbt_requeue(struct rq_qos *rqos, struct request *rq)
^~~~~~~~~~~
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Merge tag 'fsnotify_for_v5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull inotify fix from Jan Kara:
"Fix a file refcount leak in an inotify error path"
* tag 'fsnotify_for_v5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
inotify: Fix fd refcount leak in inotify_add_watch().
race in the messenger and a licence clarification for quota.c.
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Merge tag 'ceph-for-5.0-rc4' of git://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"A fix for a potential use-after-free, a patch to close a (mostly
benign) race in the messenger and a licence clarification for quota.c"
* tag 'ceph-for-5.0-rc4' of git://github.com/ceph/ceph-client:
ceph: quota: cleanup license mess
libceph: avoid KEEPALIVE_PENDING races in ceph_con_keepalive()
ceph: clear inode pointer when snap realm gets dropped by its inode
A significant amount of fixes at this time, mostly for covering the
recent ASoC issues.
- Fixes for the missing ASoC driver initialization with non-deferred
probes; these triggered other problems in chain, which resulted in
yet more fix commits
- DaVinci runtime PM fix; the diff looks large but it's just a code
shuffling
- Various fixes for ASoC Intel drivers: a regression in HD-A HDMI,
Kconfig dependency, machine driver adjustments, PLL fix.
- Other ASoC driver-specific stuff including the trivial fixes
caught by static analysis
- Usual HD-audio quirks
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Merge tag 'sound-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A significant amount of fixes at this time, mostly for covering the
recent ASoC issues.
- Fixes for the missing ASoC driver initialization with non-deferred
probes; these triggered other problems in chain, which resulted in
yet more fix commits
- DaVinci runtime PM fix; the diff looks large but it's just a code
shuffling
- Various fixes for ASoC Intel drivers: a regression in HD-A HDMI,
Kconfig dependency, machine driver adjustments, PLL fix.
- Other ASoC driver-specific stuff including the trivial fixes caught
by static analysis
- Usual HD-audio quirks"
* tag 'sound-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (30 commits)
ALSA: hda - Add mute LED support for HP ProBook 470 G5
ASoC: amd: Fix potential NULL pointer dereference
ASoC: imx-audmux: change snprintf to scnprintf for possible overflow
ASoC: rt5514-spi: Fix potential NULL pointer dereference
ASoC: dapm: change snprintf to scnprintf for possible overflow
ASoC: rt5682: Fix PLL source register definitions
ASoC: core: Don't defer probe on optional, NULL components
ASoC: core: Make snd_soc_find_component() more robust
ASoC: soc-core: fix init platform memory handling
ASoC: intel: skl: Fix display power regression
ALSA: hda/realtek - Fix typo for ALC225 model
ASoC: soc-core: Hold client_mutex around soc_init_dai_link()
ASoC: Intel: Boards: move the codec PLL configuration to _init
ASoC: soc-core: defer card probe until all component is added to list
ASoC: atom: fix a missing check of snd_pcm_lib_malloc_pages
ASoC: tlv320aic32x4: Kernel OOPS while entering DAPM standby mode
ASoC: ti: davinci-mcasp: Move context save/restore to runtime_pm callbacks
ASoC: Variable "val" in function rt274_i2c_probe() could be uninitialized
ASoC: rt5682: Fix recording no sound issue
ASoC: Intel: atom: Make PCI dependency explicit
...
Swap REQ_NOWAIT and REQ_NOUNMAP and add REQ_HIPRI.
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Precise and non-ambiguous license information is important. The recently
added aegis header file has a SPDX license identifier, which is nice, but
at the same time it has a contradictionary license boiler plate text.
SPDX-License-Identifier: GPL-2.0
versus
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
Oh well.
Assuming that the SPDX identifier is correct and according to x86/hyper-v
contributions from Microsoft GPL V2 only is the usual license.
Remove the boiler plate as it is wrong and even if correct it is redundant.
Fixes: eccb4422cf ("smb3: Add ftrace tracepoints for improved SMB3 debugging")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Steve French <sfrench@samba.org>
Cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
When doing MTU i/o we need to leave some credits for
possible reopen requests and other operations happening
in parallel. Currently we leave 1 credit which is not
enough even for reopen only: we need at least 2 credits
if durable handle reconnect fails. Also there may be
other operations at the same time including compounding
ones which require 3 credits at a time each. Fix this
by leaving 8 credits which is big enough to cover most
scenarios.
Was able to reproduce this when server was configured
to give out fewer credits than usual.
The proper fix would be to reconnect a file handle first
and then obtain credits for an MTU request but this leads
to bigger code changes and should happen in other patches.
Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The call to SMB2_queary_acl can allocate memory to pntsd and also
return a failure via a call to SMB2_query_acl (and then query_info).
This occurs when query_info allocates the structure and then in
query_info the call to smb2_validate_and_copy_iov fails. Currently the
failure just returns without kfree'ing pntsd hence causing a memory
leak.
Currently, *data is allocated if it's not already pointing to a buffer,
so it needs to be kfree'd only if was allocated in query_info, so the
fix adds an allocated flag to track this. Also set *dlen to zero on
an error just to be safe since *data is kfree'd.
Also set errno to -ENOMEM if the allocation of *data fails.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Dan Carpener <dan.carpenter@oracle.com>
Record the priority boost we giving to the preempted client or else we
may end up in a situation where the priority queue no longer matches the
request priority order and so we can end up in an infinite loop of
preempting the same pair of requests.
Fixes: e9eaf82d97 ("drm/i915: Priority boost for waiting clients")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190123135155.21562-1-chris@chris-wilson.co.uk
(cherry picked from commit 6e062b60b0)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Bit 6 in the ANACAP field is used to indicate that the ANA group ID
doesn't change while the namespace is attached to the controller.
There is an optimisation in the code to only allocate space
for the ANA group header, as the namespace list won't change and
hence would not need to be refreshed.
However, this optimisation was never carried over to the actual
workflow, which always assumes that the buffer is large enough
to hold the ANA header _and_ the namespace list.
So drop this optimisation and always allocate enough space.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Under heavy load if we don't have any pre-allocated rsps left, we
dynamically allocate a rsp, but we are not actually allocating memory
for nvme_completion (rsp->req.rsp). In such a case, accessing pointer
fields (req->rsp->status) in nvmet_req_init() will result in crash.
To fix this, allocate the memory for nvme_completion by calling
nvmet_rdma_alloc_rsp()
Fixes: 8407879c("nvmet-rdma:fix possible bogus dereference under heavy load")
Cc: <stable@vger.kernel.org>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
If the device supports less queues than provided (if the device has less
completion vectors), we might hit a bug due to the fact that we ignore
that in nvme_rdma_map_queues (we override the maps nr_queues with user
opts).
Instead, keep track of how many default/read/poll queues we actually
allocated (rather than asked by the user) and use that to assign our
queue mappings.
Fixes: b65bb777ef (" nvme-rdma: support separate queue maps for read and write")
Reported-by: Saleem, Shiraz <shiraz.saleem@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Currently, we have several problems with the timeout
handler:
1. If we timeout on the controller establishment flow, we will hang
because we don't execute the error recovery (and we shouldn't because
the create_ctrl flow needs to fail and cleanup on its own)
2. We might also hang if we get a disconnet on a queue while the
controller is already deleting. This racy flow can cause the controller
disable/shutdown admin command to hang.
We cannot complete a timed out request from the timeout handler without
mutual exclusion from the teardown flow (e.g. nvme_rdma_error_recovery_work).
So we serialize it in the timeout handler and teardown io and admin
queues to guarantee that no one races with us from completing the
request.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Currently, we have several problems with the timeout
handler:
1. If we timeout on the controller establishment flow, we will hang
because we don't execute the error recovery (and we shouldn't because
the create_ctrl flow needs to fail and cleanup on its own)
2. We might also hang if we get a disconnet on a queue while the
controller is already deleting. This racy flow can cause the controller
disable/shutdown admin command to hang.
We cannot complete a timed out request from the timeout handler without
mutual exclusion from the teardown flow (e.g. nvme_rdma_error_recovery_work).
So we serialize it in the timeout handler and teardown io and admin
queues to guarantee that no one races with us from completing the
request.
Reported-by: Jaesoo Lee <jalee@purestorage.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This reverts commit 574823bfab.
It turns out that my hope that we could just remove the code that
exposes the cache residency status from mincore() was too optimistic.
There are various random users that want it, and one example would be
the Netflix database cluster maintenance. To quote Josh Snyder:
"For Netflix, losing accurate information from the mincore syscall
would lengthen database cluster maintenance operations from days to
months. We rely on cross-process mincore to migrate the contents of a
page cache from machine to machine, and across reboots.
To do this, I wrote and maintain happycache [1], a page cache
dumper/loader tool. It is quite similar in architecture to pgfincore,
except that it is agnostic to workload. The gist of happycache's
operation is "produce a dump of residence status for each page, do
some operation, then reload exactly the same pages which were present
before." happycache is entirely dependent on accurate reporting of the
in-core status of file-backed pages, as accessed by another process.
We primarily use happycache with Cassandra, which (like Postgres +
pgfincore) relies heavily on OS page cache to reduce disk accesses.
Because our workloads never experience a cold page cache, we are able
to provision hardware for a peak utilization level that is far lower
than the hypothetical "every query is a cache miss" peak.
A database warmed by happycache can be ready for service in seconds
(bounded only by the performance of the drives and the I/O subsystem),
with no period of in-service degradation. By contrast, putting a
database in service without a page cache entails a potentially
unbounded period of degradation (at Netflix, the time to populate a
single node's cache via natural cache misses varies by workload from
hours to weeks). If a single node upgrade were to take weeks, then
upgrading an entire cluster would take months. Since we want to apply
security upgrades (and other things) on a somewhat tighter schedule,
we would have to develop more complex solutions to provide the same
functionality already provided by mincore.
At the bottom line, happycache is designed to benignly exploit the
same information leak documented in the paper [2]. I think it makes
perfect sense to remove cross-process mincore functionality from
unprivileged users, but not to remove it entirely"
We do have an alternate approach that limits the cache residency
reporting only to processes that have write permissions to the file, so
we can fix the original information leak issue that way. It involves
_adding_ code rather than removing it, which is sad, but hey, at least
we haven't found any users that would find the restrictions
unacceptable.
So revert the optimistic first approach to make room for that alternate
fix instead.
Reported-by: Josh Snyder <joshs@netflix.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Dominique Martinet <asmadeus@codewreck.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Kevin Easton <kevin@guarana.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Cyril Hrubis <chrubis@suse.cz>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Daniel Gruss <daniel@gruss.cc>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
as there was nothing that critical that I had for 5.0.
However, I say that,and then a number of critical fixes come in:
ipmi: fix use-after-free of user->release_barrier.rda
ipmi: Prevent use-after-free in deliver_response
ipmi: msghandler: Fix potential Spectre v1 vulnerabilities
which are obvious candidates for 5.0. Then there is:
ipmi:ssif: Fix handling of multi-part return messages
which is less critical, but it still has some off-by-one things that
are not great, so it seemed appropriate. Some machines are broken
without it. Then:
ipmi: Don't initialize anything in the core until something uses it
It turns out that using SRCU causes large chunks of memory to be used
on big iron machines, even if IPMI is never used. This was causing
some issues for people on those machines.
Everything here is destined for stable.
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Merge tag 'for-linus-5.0' of git://github.com/cminyard/linux-ipmi
Pull IPMI fixes from Corey Minyard:
"I missed the merge window, which wasn't really important at the time
as there was nothing that critical that I had for 5.0.
However, I say that,and then a number of critical fixes come in:
- ipmi: fix use-after-free of user->release_barrier.rda
- ipmi: Prevent use-after-free in deliver_response
- ipmi: msghandler: Fix potential Spectre v1 vulnerabilities
which are obvious candidates for 5.0. Then there is:
- ipmi:ssif: Fix handling of multi-part return messages
which is less critical, but it still has some off-by-one things that
are not great, so it seemed appropriate. Some machines are broken
without it. Then:
- ipmi: Don't initialize anything in the core until something uses it
It turns out that using SRCU causes large chunks of memory to be used
on big iron machines, even if IPMI is never used. This was causing
some issues for people on those machines.
Everything here is destined for stable"
* tag 'for-linus-5.0' of git://github.com/cminyard/linux-ipmi:
ipmi: Don't initialize anything in the core until something uses it
ipmi: fix use-after-free of user->release_barrier.rda
ipmi: Prevent use-after-free in deliver_response
ipmi: msghandler: Fix potential Spectre v1 vulnerabilities
ipmi:ssif: Fix handling of multi-part return messages
- Do not claim to run under z/VM if the hypervisor can not be identified
- Fix crashes due to outdated ASCEs in CR1
- Avoid a deadlock in regard to CPU hotplug
- Really fix the vdso mapping issue for compat tasks
- Avoid crash on restart due to an incorrect stack address
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Merge tag 's390-5.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
- Do not claim to run under z/VM if the hypervisor can not be
identified
- Fix crashes due to outdated ASCEs in CR1
- Avoid a deadlock in regard to CPU hotplug
- Really fix the vdso mapping issue for compat tasks
- Avoid crash on restart due to an incorrect stack address
* tag 's390-5.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/smp: Fix calling smp_call_ipl_cpu() from ipl CPU
s390/vdso: correct vdso mapping for compat tasks
s390/smp: fix CPU hotplug deadlock with CPU rescan
s390/mm: always force a load of the primary ASCE on context switch
s390/early: improve machine detection
