Export ufs_fixup_device_setup() to allow vendors to re-use it for fixing
device quriks on specified UFS hosts.
Link: https://lore.kernel.org/r/20200508080115.24233-4-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 151050916
(cherry picked from commit 8db269a5102eabfb05f4207f90e0a022caf7b804)
Change-Id: Ia29cf3947d1722944bdc023544169208e023c85f
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Some UFS deivces may have required device quirks or have non-standard
features which are enabled only on specified UFS hosts or for special
customers.
To not "pollute" common device quirk list, i.e. ufs_fixups table, for those
devices mentioned above, introduce "fixup_dev_quirks" vops to allow vendors
to fix or modify device quirks accordingly.
Link: https://lore.kernel.org/r/20200508080115.24233-3-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 151050916
(cherry picked from commit c28c00ba4f060949c2f461f08a4aa10024a40672)
[ Resolved minor conflict in drivers/scsi/ufs/ufshcd.h ]
Change-Id: I0317f26b92c6b14569f4081937b662195e62b905
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Once fail happens during suspend and resume flow if the desired low power
link state is H8, link recovery is required for MediaTek UFS controller.
For resume flow, since power and clocks are already enabled before invoking
vendor's resume callback, simply using ufshcd_link_recovery() inside
callback is fine.
For suspend flow, the device power enters low power mode or is disabled
before suspend callback, thus ufshcd_link_recovery() can not be directly
used in vendor callback. One solution is to set the link to off state and
then ufshcd_host_reset_and_restore() will be executed by ufshcd_suspend().
Bug: 151050916
Change-Id: I135c223a30c63e9af714ae3a3bbb950fcc0bd4c2
(cherry picked from commit 8033824bbf3c15e6321045a3f51d6f6947d89d47)
Link: https://lore.kernel.org/r/20200327095329.10083-3-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Export ufshcd_link_recovery to allow vendors to recover failed link in
vendor's callbacks.
Bug: 151050916
Change-Id: Id69485882f0943e71db06286fbe171ac9fe3a4b2
(cherry picked from commit 087c5efafa48661ac98184fbf8826a1a79dc5784)
Link: https://lore.kernel.org/r/20200327095329.10083-2-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
MediaTek platform and UFS controller can dynamically customize the delay
for host enabling according to different scenarios.
For example, if UniPro enters lower-power mode, such delay can be
minimized, otherwise longer delay shall be expected.
Bug: 151050916
Change-Id: I7113dedcc8750ddbdea69c3cd9a65045469578a7
(cherry picked from commit 73e990b4244d13599f093eab00f48d8172bbf9af)
Link: https://lore.kernel.org/r/20200318104016.28049-8-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Reduce the waiting period between each HCE (Host Controller Enable) polling
from 5 ms to 1 ms. Also increase the maximum polling times to make "total
polling time" roughly the same.
This change could make HCE initialization faster to improve latency of
ufshcd initialization, error recovery, and resume behaviors.
Bug: 151050916
Change-Id: Iad45c46387fc63b723e7e10d2100eac667130272
(cherry picked from commit 9fc305ef8eb583b3139643f90abbe38d1c2412ce)
Link: https://lore.kernel.org/r/20200318104016.28049-7-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Currently a 1 ms delay is applied before polling CONTROLLER_ENABLE
bit. This delay may not be required or can be changed in different
controllers. Make the delay as a changeable value in struct ufs_hba to
allow it customized by vendors.
Bug: 151050916
Change-Id: I7b7551669bd63c38874c3e6f229dcf61a6b91695
(cherry picked from commit b9dc8aca2899fb494d66b6c5f50c25563d1636a7)
[ Resolved minor conflict in drivers/scsi/ufs/ufshcd.h ]
Link: https://lore.kernel.org/r/20200318104016.28049-6-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
A common delay function is introduced in UFS core driver, thus ufs-mediatek
can use it instead of the private delay function.
Bug: 151050916
Change-Id: I531c43d56c7da92db752de047044161b5ec14547
(cherry picked from commit c2f755d2c904717ff62119b54b2e1f783884a16c)
Link: https://lore.kernel.org/r/20200318104016.28049-5-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Introduce a common delay function to provide flexible way for users to take
choices of udelay and usleep_range into consideration according to the
required delay time.
Bug: 151050916
Change-Id: I8d3a22b3eec523933ced54db1ab024d33e871ce0
(cherry picked from commit 5c955c10d0c26eb920f9cfad11adb58c93f666a0)
Link: https://lore.kernel.org/r/20200318104016.28049-4-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
In ufshcd_disable_tx_lcc(), if ufshcd_dme_get() or ufshcd_dme_peer_get()
get fail, uninitialized variable "tx_lanes" may be used as unexpected lane
ID for DME configuration.
Fix this issue by initializing "tx_lanes".
Bug: 151050916
Change-Id: Id347f4b47976a90e90ebd066c6f5d209f7155769
(cherry picked from commit ba0320fbb809de541a9b396e153171151607bac8)
Link: https://lore.kernel.org/r/20200318104016.28049-2-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Device quirk "UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE" is enabled for all
Samsung devices by default currently.
However MediaTek UFS host requires different host PA_TACTIVATE
configuration. Hence clear this quirk first and then apply vendor-specific
value in vops callback.
Bug: 151050916
Change-Id: Icae52601cebf3416ad48a3dcc1b6b5223dec50a1
(cherry picked from commit 47d054580a75b7d14d275a76146ce2f41bc16a81)
Link: https://lore.kernel.org/r/20200302135346.16797-1-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Add one new parameter max_lu_supported in struct ufs_dev_info, which will
be used to express exactly how many general LUs being supported by UFS
device, and initialize it during booting stage. This patch also adds a new
function ufshcd_device_geo_params_init() for initialization of UFS device
geometry descriptor related parameters.
Bug: 151050916
(cherry picked from commit 731f06216df3d605c466571a1c89222b4cca2fbc)
[ Resolved minor conflict in drivers/scsi/ufs/ufshcd.c ]
Change-Id: I2f407c726e5fe5e230c9f93075cd34b5b249b96a
Link: https://lore.kernel.org/r/20200120130820.1737-8-huobean@gmail.com
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
These are not needed to be exported anymore now that all drivers that
use them are built into the kernel image.
Bug: 157965270
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I098f1a280060b14133613312ebd84436376fb729
Platforms are using this, so enable the driver for all to use easier.
Bug: 157965270
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I5a1a6b1231c51148810389c26bc53d734f5c1ca2
These seem to be needed by most systems, so just build them into the
kernel so we don't have to keep messing with ABI changes.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I60801d9f98a37b4e84c56c0da2bf1e8d778d9953
UFS was not being enabled for x86 gki builds, making it hard to test
stuff locally.
Also enable SCSI_UFSHCD_PCI=y so that the devices that were needing this
as a module do not need that anymore, to match up with the
SCSI_UFSHCD_PLATFORM setting.
Bug: 151050916
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8af43e0a55f1467c4bd670dcdefddf3746fdd5ef
If amba bus devices defer when adding, the amba bus code simply retries
adding the devices every 5 seconds. This doesn't work well as it
completely unsynchronized with starting the init process which can
happen in less than 5 secs. Add a retry during late_initcall. If the
amba devices are added, then deferred probe takes over. If the
dependencies have not probed at this point, then there's no improvement
over previous behavior. To completely solve this, we'd need to retry
after every successful probe as deferred probe does.
The list_empty() check now happens outside the mutex, but the mutex
wasn't necessary in the first place.
This needed to use deferred probe instead of fragile initcall ordering
on 32-bit VExpress systems where the apb_pclk has a number of probe
dependencies (vexpress-sysregs, vexpress-config).
Cc: John Stultz <john.stultz@linaro.org>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Russell King <linux@armlinux.org.uk>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Change-Id: Ib5260568396e3beb85baf282c68825da80dad392
(cherry picked from commit 039599c92d3b2e73689e8b6e519d653fd4770abb)
Bug: 160030772
Signed-off-by: Saravana Kannan <saravanak@google.com>
Needed by some GPU/DRM drivers that are built out-of-tree
Bug: 159733980
Signed-off-by: Todd Kjos <tkjos@google.com>
Change-Id: Ia156d1b0a74c82d9f15b144131aff2ddeead0672
The binder driver makes the assumption proc->context pointer is invariant after
initialization (as documented in the kerneldoc header for struct proc).
However, in commit f0fe2c0f050d ("binder: prevent UAF for binderfs devices II")
proc->context is set to NULL during binder_deferred_release().
Another proc was in the middle of setting up a transaction to the dying
process and crashed on a NULL pointer deref on "context" which is a local
set to &proc->context:
new_ref->data.desc = (node == context->binder_context_mgr_node) ? 0 : 1;
Here's the stack:
[ 5237.855435] Call trace:
[ 5237.855441] binder_get_ref_for_node_olocked+0x100/0x2ec
[ 5237.855446] binder_inc_ref_for_node+0x140/0x280
[ 5237.855451] binder_translate_binder+0x1d0/0x388
[ 5237.855456] binder_transaction+0x2228/0x3730
[ 5237.855461] binder_thread_write+0x640/0x25bc
[ 5237.855466] binder_ioctl_write_read+0xb0/0x464
[ 5237.855471] binder_ioctl+0x30c/0x96c
[ 5237.855477] do_vfs_ioctl+0x3e0/0x700
[ 5237.855482] __arm64_sys_ioctl+0x78/0xa4
[ 5237.855488] el0_svc_common+0xb4/0x194
[ 5237.855493] el0_svc_handler+0x74/0x98
[ 5237.855497] el0_svc+0x8/0xc
The fix is to move the kfree of the binder_device to binder_free_proc()
so the binder_device is freed when we know there are no references
remaining on the binder_proc.
Fixes: f0fe2c0f050d ("binder: prevent UAF for binderfs devices II")
Signed-off-by: Todd Kjos <tkjos@google.com>
(cherry picked from commit d35d3660e065b69fdb8bf512f3d899f350afce52
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-linus)
Bug: 158252621
Change-Id: Iee9547d58b85794af034b78eaab47075f3635f82
In current implementation the Linux version string that is attached to
the kernel linux image as well as the all kernel modules includes the
sha1 of the main git project for the kernel.
This Commit adds the BUILD_NUMBER env variable with an 'ab' prefix to
the Linux version string. This maps to both the Linux Image and all
kernel modules version strings.
Bug: 159842160
Bug: 137521202
Test: Build the kernel and test the version string
Change-Id: I4795955f36f477b257ca86495726e24d6b196d05
Signed-off-by: Alex Hong <rurumihong@google.com>
(cherry picked from commit e60f995403c9799dd0dc14d62d77d6698a8a7126)
[willmcvicker: fix uts_len check to include -ab$(BUILD_NUMBER)]
Signed-off-by: Will McVicker <willmcvicker@google.com>
5.4.49 changed some structure definitions in the USB gadget and sound
code, and we added some more padding in this area to prevent that from
happening in the future.
Because of that, update the abi.xml file with these changes.
Leaf changes summary: 2 artifacts changed
Changed leaf types summary: 2 leaf types changed
Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 0 Added function
Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable
'struct snd_usb_endpoint at card.h:54:1' changed:
type size changed from 44544 to 44992 (in bits)
9 data member insertions:
'unsigned int snd_usb_endpoint::framesize[2]', at offset 43744 (in bits) at card.h:89:1
'unsigned int snd_usb_endpoint::sample_rem', at offset 43808 (in bits) at card.h:90:1
'unsigned int snd_usb_endpoint::sample_accum', at offset 43840 (in bits) at card.h:91:1
'unsigned int snd_usb_endpoint::fps', at offset 43872 (in bits) at card.h:92:1
'bool snd_usb_endpoint::is_implicit_feedback', at offset 44512 (in bits) at card.h:113:1
'u64 snd_usb_endpoint::android_kabi_reserved1', at offset 44736 (in bits) at card.h:118:1
'u64 snd_usb_endpoint::android_kabi_reserved2', at offset 44800 (in bits) at card.h:119:1
'u64 snd_usb_endpoint::android_kabi_reserved3', at offset 44864 (in bits) at card.h:120:1
'u64 snd_usb_endpoint::android_kabi_reserved4', at offset 44928 (in bits) at card.h:121:1
there are data member changes:
'unsigned int snd_usb_endpoint::freqn' offset changed from 43744 to 43904 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::freqm' offset changed from 43776 to 43936 (in bits) (by +160 bits)
'int snd_usb_endpoint::freqshift' offset changed from 43808 to 43968 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::freqmax' offset changed from 43840 to 44000 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::phase' offset changed from 43872 to 44032 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::maxpacksize' offset changed from 43904 to 44064 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::maxframesize' offset changed from 43936 to 44096 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::max_urb_frames' offset changed from 43968 to 44128 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::curpacksize' offset changed from 44000 to 44160 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::curframesize' offset changed from 44032 to 44192 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::syncmaxsize' offset changed from 44064 to 44224 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::datainterval' offset changed from 44128 to 44288 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::syncinterval' offset changed from 44160 to 44320 (in bits) (by +160 bits)
'unsigned char snd_usb_endpoint::silence_value' offset changed from 44192 to 44352 (in bits) (by +160 bits)
'unsigned int snd_usb_endpoint::stride' offset changed from 44224 to 44384 (in bits) (by +160 bits)
'int snd_usb_endpoint::iface' offset changed from 44256 to 44416 (in bits) (by +160 bits)
'int snd_usb_endpoint::altsetting' offset changed from 44288 to 44448 (in bits) (by +160 bits)
'int snd_usb_endpoint::skip_packets' offset changed from 44320 to 44480 (in bits) (by +160 bits)
'spinlock_t snd_usb_endpoint::lock' offset changed from 44352 to 44544 (in bits) (by +192 bits)
'list_head snd_usb_endpoint::list' offset changed from 44416 to 44608 (in bits) (by +192 bits)
2 impacted interfaces
'struct usb_gadget at gadget.h:395:1' changed:
type size changed from 8256 to 8512 (in bits)
5 data member insertions:
'int usb_gadget::irq', at offset 8224 (in bits) at gadget.h:432:1
'u64 usb_gadget::android_kabi_reserved1', at offset 8256 (in bits) at gadget.h:434:1
'u64 usb_gadget::android_kabi_reserved2', at offset 8320 (in bits) at gadget.h:435:1
'u64 usb_gadget::android_kabi_reserved3', at offset 8384 (in bits) at gadget.h:436:1
'u64 usb_gadget::android_kabi_reserved4', at offset 8448 (in bits) at gadget.h:437:1
24 impacted interfaces
Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ic3fa7583c5b69b0984f4c7b711150b974bec5cc7
Over time, this structure is being changed a bunch to fix issues found
in the gadget code as more and more people stress it. So add padding to
handle any needed future changes that might occur.
Of course, now that the padding is there, there never will be any need
to change this structure again...
Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I496797469268cc5d3cfafdb19c141b6b6196fe72
There seems to be lots of people wanting to change this structure, and
while it feels internal, due to some SoC patches, there's an ABI that
needs to be preserved here over time.
So add some padding to struct snd_usb_endpoint so that we can maintain
this succesfully in the future.
Of course, now that the padding is there, there never will be any need
to change this structure again...
Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I21cb3abbdca2961e33a94b2bc48b49f3fadbd206
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Merge 5.4.49 into android-5.4-stable
Changes in 5.4.49
power: supply: bq24257_charger: Replace depends on REGMAP_I2C with select
clk: sunxi: Fix incorrect usage of round_down()
ASoC: tegra: tegra_wm8903: Support nvidia, headset property
i2c: piix4: Detect secondary SMBus controller on AMD AM4 chipsets
ASoC: SOF: imx8: Fix randbuild error
iio: pressure: bmp280: Tolerate IRQ before registering
remoteproc: Fix IDR initialisation in rproc_alloc()
clk: qcom: msm8916: Fix the address location of pll->config_reg
ASoC: fsl_esai: Disable exception interrupt before scheduling tasklet
backlight: lp855x: Ensure regulators are disabled on probe failure
ARM: dts: renesas: Fix IOMMU device node names
ASoC: davinci-mcasp: Fix dma_chan refcnt leak when getting dma type
ARM: integrator: Add some Kconfig selections
ARM: dts: stm32: Add missing ethernet PHY reset on AV96
scsi: core: free sgtables in case command setup fails
scsi: qedi: Check for buffer overflow in qedi_set_path()
arm64: dts: meson: fixup SCP sram nodes
ALSA: hda/realtek - Introduce polarity for micmute LED GPIO
ALSA: isa/wavefront: prevent out of bounds write in ioctl
PCI: Allow pci_resize_resource() for devices on root bus
scsi: qla2xxx: Fix issue with adapter's stopping state
Input: edt-ft5x06 - fix get_default register write access
powerpc/kasan: Fix stack overflow by increasing THREAD_SHIFT
rtc: mc13xxx: fix a double-unlock issue
iio: bmp280: fix compensation of humidity
f2fs: report delalloc reserve as non-free in statfs for project quota
i2c: pxa: clear all master action bits in i2c_pxa_stop_message()
remoteproc: qcom_q6v5_mss: map/unmap mpss segments before/after use
clk: samsung: Mark top ISP and CAM clocks on Exynos542x as critical
usblp: poison URBs upon disconnect
serial: 8250: Fix max baud limit in generic 8250 port
misc: fastrpc: Fix an incomplete memory release in fastrpc_rpmsg_probe()
misc: fastrpc: fix potential fastrpc_invoke_ctx leak
dm mpath: switch paths in dm_blk_ioctl() code path
arm64: dts: armada-3720-turris-mox: forbid SDR104 on SDIO for FCC purposes
arm64: dts: armada-3720-turris-mox: fix SFP binding
arm64: dts: juno: Fix GIC child nodes
pinctrl: ocelot: Fix GPIO interrupt decoding on Jaguar2
clk: renesas: cpg-mssr: Fix STBCR suspend/resume handling
ASoC: SOF: Do nothing when DSP PM callbacks are not set
arm64: dts: fvp: Fix GIC child nodes
PCI: aardvark: Don't blindly enable ASPM L0s and don't write to read-only register
ps3disk: use the default segment boundary
arm64: dts: fvp/juno: Fix node address fields
vfio/pci: fix memory leaks in alloc_perm_bits()
coresight: tmc: Fix TMC mode read in tmc_read_prepare_etb()
RDMA/mlx5: Add init2init as a modify command
scsi: hisi_sas: Do not reset phy timer to wait for stray phy up
PCI: pci-bridge-emul: Fix PCIe bit conflicts
m68k/PCI: Fix a memory leak in an error handling path
gpio: dwapb: Call acpi_gpiochip_free_interrupts() on GPIO chip de-registration
usb: gadget: core: sync interrupt before unbind the udc
powerpc/ptdump: Add _PAGE_COHERENT flag
mfd: wm8994: Fix driver operation if loaded as modules
scsi: cxgb3i: Fix some leaks in init_act_open()
clk: zynqmp: fix memory leak in zynqmp_register_clocks
scsi: lpfc: Fix lpfc_nodelist leak when processing unsolicited event
scsi: vhost: Notify TCM about the maximum sg entries supported per command
clk: clk-flexgen: fix clock-critical handling
IB/mlx5: Fix DEVX support for MLX5_CMD_OP_INIT2INIT_QP command
powerpc/perf/hv-24x7: Fix inconsistent output values incase multiple hv-24x7 events run
nfsd: Fix svc_xprt refcnt leak when setup callback client failed
PCI: vmd: Filter resource type bits from shadow register
RDMA/core: Fix several reference count leaks.
cifs: set up next DFS target before generic_ip_connect()
ASoC: qcom: q6asm-dai: kCFI fix
powerpc/crashkernel: Take "mem=" option into account
pwm: img: Call pm_runtime_put() in pm_runtime_get_sync() failed case
sparc32: mm: Don't try to free page-table pages if ctor() fails
yam: fix possible memory leak in yam_init_driver
NTB: ntb_pingpong: Choose doorbells based on port number
NTB: Fix the default port and peer numbers for legacy drivers
mksysmap: Fix the mismatch of '.L' symbols in System.map
apparmor: fix introspection of of task mode for unconfined tasks
net: dsa: lantiq_gswip: fix and improve the unsupported interface error
apparmor: check/put label on apparmor_sk_clone_security()
f2fs: handle readonly filesystem in f2fs_ioc_shutdown()
ASoC: meson: add missing free_irq() in error path
bpf, sockhash: Fix memory leak when unlinking sockets in sock_hash_free
scsi: sr: Fix sr_probe() missing deallocate of device minor
scsi: ibmvscsi: Don't send host info in adapter info MAD after LPM
apparmor: fix nnp subset test for unconfined
x86/purgatory: Disable various profiling and sanitizing options
staging: greybus: fix a missing-check bug in gb_lights_light_config()
arm64: dts: mt8173: fix unit name warnings
scsi: qedi: Do not flush offload work if ARP not resolved
arm64: dts: qcom: msm8916: remove unit name for thermal trip points
ARM: dts: sun8i-h2-plus-bananapi-m2-zero: Fix led polarity
RDMA/mlx5: Fix udata response upon SRQ creation
gpio: dwapb: Append MODULE_ALIAS for platform driver
scsi: qedf: Fix crash when MFW calls for protocol stats while function is still probing
pinctrl: rza1: Fix wrong array assignment of rza1l_swio_entries
virtiofs: schedule blocking async replies in separate worker
arm64: dts: qcom: fix pm8150 gpio interrupts
firmware: qcom_scm: fix bogous abuse of dma-direct internals
staging: gasket: Fix mapping refcnt leak when put attribute fails
staging: gasket: Fix mapping refcnt leak when register/store fails
ALSA: usb-audio: Improve frames size computation
ALSA: usb-audio: Fix racy list management in output queue
s390/qdio: put thinint indicator after early error
tty: hvc: Fix data abort due to race in hvc_open
slimbus: ngd: get drvdata from correct device
clk: meson: meson8b: Fix the first parent of vid_pll_in_sel
clk: meson: meson8b: Fix the polarity of the RESET_N lines
clk: meson: meson8b: Fix the vclk_div{1, 2, 4, 6, 12}_en gate bits
gpio: pca953x: fix handling of automatic address incrementing
thermal/drivers/ti-soc-thermal: Avoid dereferencing ERR_PTR
clk: meson: meson8b: Don't rely on u-boot to init all GP_PLL registers
ASoC: max98373: reorder max98373_reset() in resume
soundwire: slave: don't init debugfs on device registration error
HID: intel-ish-hid: avoid bogus uninitialized-variable warning
usb: dwc3: gadget: Properly handle ClearFeature(halt)
usb: dwc3: gadget: Properly handle failed kick_transfer
staging: wilc1000: Increase the size of wid_list array
staging: sm750fb: add missing case while setting FB_VISUAL
PCI: v3-semi: Fix a memory leak in v3_pci_probe() error handling paths
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: rcar: Fix incorrect programming of OB windows
PCI/ASPM: Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges
scsi: qla2xxx: Fix warning after FC target reset
ALSA: firewire-lib: fix invalid assignment to union data for directional parameter
power: supply: lp8788: Fix an error handling path in 'lp8788_charger_probe()'
power: supply: smb347-charger: IRQSTAT_D is volatile
ASoC: SOF: core: fix error return code in sof_probe_continue()
arm64: dts: msm8996: Fix CSI IRQ types
scsi: target: loopback: Fix READ with data and sensebytes
scsi: mpt3sas: Fix double free warnings
SoC: rsnd: add interrupt support for SSI BUSIF buffer
ASoC: ux500: mop500: Fix some refcounted resources issues
ASoC: ti: omap-mcbsp: Fix an error handling path in 'asoc_mcbsp_probe()'
pinctrl: rockchip: fix memleak in rockchip_dt_node_to_map
dlm: remove BUG() before panic()
USB: ohci-sm501: fix error return code in ohci_hcd_sm501_drv_probe()
clk: ti: composite: fix memory leak
PCI: Fix pci_register_host_bridge() device_register() error handling
powerpc/64: Don't initialise init_task->thread.regs
tty: n_gsm: Fix SOF skipping
tty: n_gsm: Fix waking up upper tty layer when room available
ALSA: usb-audio: Add duplex sound support for USB devices using implicit feedback
HID: Add quirks for Trust Panora Graphic Tablet
PCI/PM: Assume ports without DLL Link Active train links in 100 ms
habanalabs: increase timeout during reset
ipmi: use vzalloc instead of kmalloc for user creation
powerpc/64s/exception: Fix machine check no-loss idle wakeup
powerpc/pseries/ras: Fix FWNMI_VALID off by one
drivers: phy: sr-usb: do not use internal fsm for USB2 phy init
powerpc/ps3: Fix kexec shutdown hang
vfio-pci: Mask cap zero
usb/ohci-platform: Fix a warning when hibernating
drm/msm/mdp5: Fix mdp5_init error path for failed mdp5_kms allocation
ASoC: Intel: bytcr_rt5640: Add quirk for Toshiba Encore WT8-A tablet
USB: host: ehci-mxc: Add error handling in ehci_mxc_drv_probe()
tty: n_gsm: Fix bogus i++ in gsm_data_kick
fpga: dfl: afu: Corrected error handling levels
clk: samsung: exynos5433: Add IGNORE_UNUSED flag to sclk_i2s1
RDMA/hns: Bugfix for querying qkey
RDMA/hns: Fix cmdq parameter of querying pf timer resource
scsi: target: tcmu: Userspace must not complete queued commands
firmware: imx: scu: Fix possible memory leak in imx_scu_probe()
fuse: fix copy_file_range cache issues
fuse: copy_file_range should truncate cache
arm64: tegra: Fix ethernet phy-mode for Jetson Xavier
arm64: tegra: Fix flag for 64-bit resources in 'ranges' property
powerpc/64s/pgtable: fix an undefined behaviour
dm zoned: return NULL if dmz_get_zone_for_reclaim() fails to find a zone
PCI/PTM: Inherit Switch Downstream Port PTM settings from Upstream Port
PCI: dwc: Fix inner MSI IRQ domain registration
PCI: amlogic: meson: Don't use FAST_LINK_MODE to set up link
IB/cma: Fix ports memory leak in cma_configfs
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.
usb: gadget: Fix issue with config_ep_by_speed function
scripts: headers_install: Exit with error on config leak
RDMA/iw_cxgb4: cleanup device debugfs entries on ULD remove
x86/apic: Make TSC deadline timer detection message visible
mfd: stmfx: Reset chip on resume as supply was disabled
mfd: stmfx: Fix stmfx_irq_init error path
mfd: stmfx: Disable IRQ in suspend to avoid spurious interrupt
powerpc/32s: Don't warn when mapping RO data ROX.
ASoC: fix incomplete error-handling in img_i2s_in_probe.
scsi: target: tcmu: Fix a use after free in tcmu_check_expired_queue_cmd()
clk: bcm2835: Fix return type of bcm2835_register_gate
scsi: ufs-qcom: Fix scheduling while atomic issue
KVM: PPC: Book3S HV: Ignore kmemleak false positives
KVM: PPC: Book3S: Fix some RCU-list locks
clk: sprd: return correct type of value for _sprd_pll_recalc_rate
clk: ast2600: Fix AHB clock divider for A1
misc: xilinx-sdfec: improve get_user_pages_fast() error handling
/dev/mem: Revoke mappings when a driver claims the region
net: sunrpc: Fix off-by-one issues in 'rpc_ntop6'
NFSv4.1 fix rpc_call_done assignment for BIND_CONN_TO_SESSION
of: Fix a refcounting bug in __of_attach_node_sysfs()
input: i8042 - Remove special PowerPC handling
powerpc/4xx: Don't unmap NULL mbase
extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()'
ASoC: fsl_asrc_dma: Fix dma_chan leak when config DMA channel failed
vfio/mdev: Fix reference count leak in add_mdev_supported_type
rtc: rv3028: Add missed check for devm_regmap_init_i2c()
mailbox: zynqmp-ipi: Fix NULL vs IS_ERR() check in zynqmp_ipi_mbox_probe()
rxrpc: Adjust /proc/net/rxrpc/calls to display call->debug_id not user_ID
openrisc: Fix issue with argument clobbering for clone/fork
drm/nouveau/disp/gm200-: fix NV_PDISP_SOR_HDMI2_CTRL(n) selection
ceph: don't return -ESTALE if there's still an open file
nfsd4: make drc_slab global, not per-net
gfs2: Allow lock_nolock mount to specify jid=X
scsi: iscsi: Fix reference count leak in iscsi_boot_create_kobj
scsi: ufs: Don't update urgent bkops level when toggling auto bkops
pinctrl: imxl: Fix an error handling path in 'imx1_pinctrl_core_probe()'
pinctrl: freescale: imx: Fix an error handling path in 'imx_pinctrl_probe()'
nfsd: safer handling of corrupted c_type
drm/amd/display: Revalidate bandwidth before commiting DC updates
crypto: omap-sham - add proper load balancing support for multicore
geneve: change from tx_error to tx_dropped on missing metadata
lib/zlib: remove outdated and incorrect pre-increment optimization
include/linux/bitops.h: avoid clang shift-count-overflow warnings
selftests/vm/pkeys: fix alloc_random_pkey() to make it really random
blktrace: use errno instead of bi_status
blktrace: fix endianness in get_pdu_int()
blktrace: fix endianness for blk_log_remap()
gfs2: fix use-after-free on transaction ail lists
net: marvell: Fix OF_MDIO config check
ntb_perf: pass correct struct device to dma_alloc_coherent
ntb_tool: pass correct struct device to dma_alloc_coherent
NTB: ntb_tool: reading the link file should not end in a NULL byte
NTB: Revert the change to use the NTB device dev for DMA allocations
NTB: perf: Don't require one more memory window than number of peers
NTB: perf: Fix support for hardware that doesn't have port numbers
NTB: perf: Fix race condition when run with ntb_test
NTB: ntb_test: Fix bug when counting remote files
i2c: icy: Fix build with CONFIG_AMIGA_PCMCIA=n
drivers/perf: hisi: Fix wrong value for all counters enable
selftests/net: in timestamping, strncpy needs to preserve null byte
f2fs: don't return vmalloc() memory from f2fs_kmalloc()
afs: Fix memory leak in afs_put_sysnames()
ASoC: core: only convert non DPCM link to DPCM link
ASoC: SOF: nocodec: conditionally set dpcm_capture/dpcm_playback flags
ASoC: Intel: bytcr_rt5640: Add quirk for Toshiba Encore WT10-A tablet
ASoC: rt5645: Add platform-data for Asus T101HA
bpf/sockmap: Fix kernel panic at __tcp_bpf_recvmsg
bpf, sockhash: Synchronize delete from bucket list on map free
tracing/probe: Fix bpf_task_fd_query() for kprobes and uprobes
drm/sun4i: hdmi ddc clk: Fix size of m divider
libbpf: Handle GCC noreturn-turned-volatile quirk
scsi: acornscsi: Fix an error handling path in acornscsi_probe()
x86/idt: Keep spurious entries unset in system_vectors
net/filter: Permit reading NET in load_bytes_relative when MAC not set
nvme-pci: use simple suspend when a HMB is enabled
nfs: set invalid blocks after NFSv4 writes
xdp: Fix xsk_generic_xmit errno
iavf: fix speed reporting over virtchnl
bpf: Fix memlock accounting for sock_hash
usb/xhci-plat: Set PM runtime as active on resume
usb: host: ehci-platform: add a quirk to avoid stuck
usb/ehci-platform: Set PM runtime as active on resume
perf report: Fix NULL pointer dereference in hists__fprintf_nr_sample_events()
perf stat: Fix NULL pointer dereference
ext4: stop overwrite the errcode in ext4_setup_super
bcache: fix potential deadlock problem in btree_gc_coalesce
powerpc: Fix kernel crash in show_instructions() w/DEBUG_VIRTUAL
afs: Fix non-setting of mtime when writing into mmap
afs: afs_write_end() should change i_size under the right lock
afs: Fix EOF corruption
afs: Always include dir in bulk status fetch from afs_do_lookup()
afs: Set error flag rather than return error from file status decode
afs: Fix the mapping of the UAEOVERFLOW abort code
bnxt_en: Return from timer if interface is not in open state.
scsi: ufs-bsg: Fix runtime PM imbalance on error
block: Fix use-after-free in blkdev_get()
mvpp2: remove module bugfix
arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
libata: Use per port sync for detach
drm: encoder_slave: fix refcouting error for modules
ext4: fix partial cluster initialization when splitting extent
ext4: avoid utf8_strncasecmp() with unstable name
drm/dp_mst: Reformat drm_dp_check_act_status() a bit
drm/qxl: Use correct notify port address when creating cursor ring
drm/amdgpu: Replace invalid device ID with a valid device ID
selinux: fix double free
jbd2: clean __jbd2_journal_abort_hard() and __journal_abort_soft()
ext4: avoid race conditions when remounting with options that change dax
drm/dp_mst: Increase ACT retry timeout to 3s
drm/amd/display: Use swap() where appropriate
x86/boot/compressed: Relax sed symbol type regex for LLVM ld.lld
block: nr_sects_write(): Disable preemption on seqcount write
net/mlx5: DR, Fix freeing in dr_create_rc_qp()
f2fs: split f2fs_d_compare() from f2fs_match_name()
f2fs: avoid utf8_strncasecmp() with unstable name
s390: fix syscall_get_error for compat processes
drm/i915: Fix AUX power domain toggling across TypeC mode resets
drm/msm: Check for powered down HW in the devfreq callbacks
drm/i915/gem: Avoid iterating an empty list
drm/i915: Whitelist context-local timestamp in the gen9 cmdparser
drm/connector: notify userspace on hotplug after register complete
drm/amd/display: Use kvfree() to free coeff in build_regamma()
drm/i915/icl+: Fix hotplug interrupt disabling after storm detection
Revert "drm/amd/display: disable dcn20 abm feature for bring up"
crypto: algif_skcipher - Cap recv SG list at ctx->used
crypto: algboss - don't wait during notifier callback
tracing/probe: Fix memleak in fetch_op_data operations
kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
e1000e: Do not wake up the system via WOL if device wakeup is disabled
net: octeon: mgmt: Repair filling of RX ring
pwm: jz4740: Enhance precision in calculation of duty cycle
sched/rt, net: Use CONFIG_PREEMPTION.patch
net: core: device_rename: Use rwsem instead of a seqcount
Linux 5.4.49
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I93723d3c14b5de06aafb4e59a9e35a1d74389757
Matching names with casefolded encrypting directories requires
decrypting entries to confirm case since we are case preserving. We can
avoid needing to decrypt if our hash values don't match.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Test: Boots, /data/media is case insensitive
Bug: 138322712
Change-Id: Id6024fc2a3bbde1e46a29070981fa64b3f667075
This adds support for encryption with casefolding.
Since the name on disk is case preserving, and also encrypted, we can no
longer just recompute the hash on the fly. Additionally, to avoid
leaking extra information from the hash of the unencrypted name, we use
siphash via an fscrypt v2 policy.
The hash is stored at the end of the directory entry for all entries
inside of an encrypted and casefolded directory apart from those that
deal with '.' and '..'. This way, the change is backwards compatible
with existing ext4 filesystems.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Test: Boots, /data/media is case insensitive
Bug: 138322712
Change-Id: I07354e3129aa07d309fbe36c002fee1af718f348
[ Upstream commit 11d6011c2cf29f7c8181ebde6c8bc0c4d83adcd7 ]
Sequence counters write paths are critical sections that must never be
preempted, and blocking, even for CONFIG_PREEMPTION=n, is not allowed.
Commit 5dbe7c178d ("net: fix kernel deadlock with interface rename and
netdev name retrieval.") handled a deadlock, observed with
CONFIG_PREEMPTION=n, where the devnet_rename seqcount read side was
infinitely spinning: it got scheduled after the seqcount write side
blocked inside its own critical section.
To fix that deadlock, among other issues, the commit added a
cond_resched() inside the read side section. While this will get the
non-preemptible kernel eventually unstuck, the seqcount reader is fully
exhausting its slice just spinning -- until TIF_NEED_RESCHED is set.
The fix is also still broken: if the seqcount reader belongs to a
real-time scheduling policy, it can spin forever and the kernel will
livelock.
Disabling preemption over the seqcount write side critical section will
not work: inside it are a number of GFP_KERNEL allocations and mutex
locking through the drivers/base/ :: device_rename() call chain.
>From all the above, replace the seqcount with a rwsem.
Fixes: 5dbe7c178d (net: fix kernel deadlock with interface rename and netdev name retrieval.)
Fixes: 30e6c9fa93 (net: devnet_rename_seq should be a seqcount)
Fixes: c91f6df2db (sockopt: Change getsockopt() of SO_BINDTODEVICE to return an interface name)
Cc: <stable@vger.kernel.org>
Reported-by: kbuild test robot <lkp@intel.com> [ v1 missing up_read() on error exit ]
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> [ v1 missing up_read() on error exit ]
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 2da2b32fd9346009e9acdb68c570ca8d3966aba7 ]
CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by CONFIG_PREEMPT_RT.
Both PREEMPT and PREEMPT_RT require the same functionality which today
depends on CONFIG_PREEMPT.
Update the comment to use CONFIG_PREEMPTION.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: netdev@vger.kernel.org
Link: https://lore.kernel.org/r/20191015191821.11479-22-bigeasy@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 9017dc4fbd59c09463019ce494cfe36d654495a8 upstream.
Calculating the hardware value for the duty from the hardware value of
the period resulted in a precision loss versus calculating it from the
clock rate directly.
(Also remove a cast that doesn't really need to be here)
Fixes: f6b8a57000 ("pwm: Add Ingenic JZ4740 support")
Cc: <stable@vger.kernel.org>
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
[ukl: backport to v5.4.y and adapt commit log accordingly]
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0c34bb598c510e070160029f34efeeb217000f8d upstream.
The removal of mips_swiotlb_ops exposed a problem in octeon_mgmt Ethernet
driver. mips_swiotlb_ops had an mb() after most of the operations and the
removal of the ops had broken the receive functionality of the driver.
My code inspection has shown no other places except
octeon_mgmt_rx_fill_ring() where an explicit barrier would be obviously
missing. The latter function however has to make sure that "ringing the
bell" doesn't happen before RX ring entry is really written.
The patch has been successfully tested on Octeon II.
Fixes: a999933db9 ("MIPS: remove mips_swiotlb_ops")
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6bf6be1127f7e6d4bf39f84d56854e944d045d74 upstream.
Currently the system will be woken up via WOL(Wake On LAN) even if the
device wakeup ability has been disabled via sysfs:
cat /sys/devices/pci0000:00/0000:00:1f.6/power/wakeup
disabled
The system should not be woken up if the user has explicitly
disabled the wake up ability for this device.
This patch clears the WOL ability of this network device if the
user has disabled the wake up ability in sysfs.
Fixes: bc7f75fa97 ("[E1000E]: New pci-express e1000 driver")
Reported-by: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9b38cc704e844e41d9cf74e647bff1d249512cb3 upstream.
Ziqian reported lockup when adding retprobe on _raw_spin_lock_irqsave.
My test was also able to trigger lockdep output:
============================================
WARNING: possible recursive locking detected
5.6.0-rc6+ #6 Not tainted
--------------------------------------------
sched-messaging/2767 is trying to acquire lock:
ffffffff9a492798 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_hash_lock+0x52/0xa0
but task is already holding lock:
ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(kretprobe_table_locks[i].lock));
lock(&(kretprobe_table_locks[i].lock));
*** DEADLOCK ***
May be due to missing lock nesting notation
1 lock held by sched-messaging/2767:
#0: ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50
stack backtrace:
CPU: 3 PID: 2767 Comm: sched-messaging Not tainted 5.6.0-rc6+ #6
Call Trace:
dump_stack+0x96/0xe0
__lock_acquire.cold.57+0x173/0x2b7
? native_queued_spin_lock_slowpath+0x42b/0x9e0
? lockdep_hardirqs_on+0x590/0x590
? __lock_acquire+0xf63/0x4030
lock_acquire+0x15a/0x3d0
? kretprobe_hash_lock+0x52/0xa0
_raw_spin_lock_irqsave+0x36/0x70
? kretprobe_hash_lock+0x52/0xa0
kretprobe_hash_lock+0x52/0xa0
trampoline_handler+0xf8/0x940
? kprobe_fault_handler+0x380/0x380
? find_held_lock+0x3a/0x1c0
kretprobe_trampoline+0x25/0x50
? lock_acquired+0x392/0xbc0
? _raw_spin_lock_irqsave+0x50/0x70
? __get_valid_kprobe+0x1f0/0x1f0
? _raw_spin_unlock_irqrestore+0x3b/0x40
? finish_task_switch+0x4b9/0x6d0
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
The code within the kretprobe handler checks for probe reentrancy,
so we won't trigger any _raw_spin_lock_irqsave probe in there.
The problem is in outside kprobe_flush_task, where we call:
kprobe_flush_task
kretprobe_table_lock
raw_spin_lock_irqsave
_raw_spin_lock_irqsave
where _raw_spin_lock_irqsave triggers the kretprobe and installs
kretprobe_trampoline handler on _raw_spin_lock_irqsave return.
The kretprobe_trampoline handler is then executed with already
locked kretprobe_table_locks, and first thing it does is to
lock kretprobe_table_locks ;-) the whole lockup path like:
kprobe_flush_task
kretprobe_table_lock
raw_spin_lock_irqsave
_raw_spin_lock_irqsave ---> probe triggered, kretprobe_trampoline installed
---> kretprobe_table_locks locked
kretprobe_trampoline
trampoline_handler
kretprobe_hash_lock(current, &head, &flags); <--- deadlock
Adding kprobe_busy_begin/end helpers that mark code with fake
probe installed to prevent triggering of another kprobe within
this code.
Using these helpers in kprobe_flush_task, so the probe recursion
protection check is hit and the probe is never set to prevent
above lockup.
Link: http://lkml.kernel.org/r/158927059835.27680.7011202830041561604.stgit@devnote2
Fixes: ef53d9c5e4 ("kprobes: improve kretprobe scalability with hashed locking")
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Gustavo A . R . Silva" <gustavoars@kernel.org>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Reported-by: "Ziqian SUN (Zamir)" <zsun@redhat.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1a0aa991a6274161c95a844c58cfb801d681eb59 upstream.
In kprobe_optimizer() kick_kprobe_optimizer() is called
without kprobe_mutex, but this can race with other caller
which is protected by kprobe_mutex.
To fix that, expand kprobe_mutex protected area to protect
kick_kprobe_optimizer() call.
Link: http://lkml.kernel.org/r/158927057586.27680.5036330063955940456.stgit@devnote2
Fixes: cd7ebe2298 ("kprobes: Use text_poke_smp_batch for optimizing")
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Gustavo A . R . Silva" <gustavoars@kernel.org>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ziqian SUN <zsun@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 77251e41f89a813b4090f5199442f217bbf11297 upstream.
When a crypto template needs to be instantiated, CRYPTO_MSG_ALG_REQUEST
is sent to crypto_chain. cryptomgr_schedule_probe() handles this by
starting a thread to instantiate the template, then waiting for this
thread to complete via crypto_larval::completion.
This can deadlock because instantiating the template may require loading
modules, and this (apparently depending on userspace) may need to wait
for the crc-t10dif module (lib/crc-t10dif.c) to be loaded. But
crc-t10dif's module_init function uses crypto_register_notifier() and
therefore takes crypto_chain.rwsem for write. That can't proceed until
the notifier callback has finished, as it holds this semaphore for read.
Fix this by removing the wait on crypto_larval::completion from within
cryptomgr_schedule_probe(). It's actually unnecessary because
crypto_alg_mod_lookup() calls crypto_larval_wait() itself after sending
CRYPTO_MSG_ALG_REQUEST.
This only actually became a problem in v4.20 due to commit b76377543b
("crc-t10dif: Pick better transform if one becomes available"), but the
unnecessary wait was much older.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207159
Reported-by: Mike Gerow <gerow@google.com>
Fixes: 398710379f ("crypto: algapi - Move larval completion into algboss")
Cc: <stable@vger.kernel.org> # v3.6+
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reported-by: Kai Lüke <kai@kinvolk.io>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7cf81954705b7e5b057f7dc39a7ded54422ab6e1 upstream.
Somewhere along the line the cap on the SG list length for receive
was lost. This patch restores it and removes the subsequent test
which is now redundant.
Fixes: 2d97591ef4 ("crypto: af_alg - consolidation of...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 14ed1c908a7a623cc0cbf0203f8201d1b7d31d16 upstream.
This reverts commit 96cb7cf13d.
This change was used for DCN2 bringup and is no longer desired.
In fact it breaks backlight on DCN2 systems.
Cc: Alexander Monakov <amonakov@ispras.ru>
Cc: Hersen Wu <hersenxs.wu@amd.com>
Cc: Anthony Koo <Anthony.Koo@amd.com>
Cc: Michael Chiu <Michael.Chiu@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reported-and-tested-by: Alexander Monakov <amonakov@ispras.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 81921a828b94ce2816932c19a5ec74d302972833 upstream.
Use kvfree() instead of kfree() to free coeff in build_regamma()
because the memory is allocated with kvzalloc().
Fixes: e752058b86 ("drm/amd/display: Optimize gamma calculations")
Cc: stable@vger.kernel.org
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 968d81a64a883af2d16dd3f8a6ad6b67db2fde58 upstream.
drm connector notifies userspace on hotplug event prematurely before
late_register and mode_object register completes. This leads to a race
between userspace and kernel on updating the IDR list. So, move the
notification to end of connector register.
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Steve Cohen <cohens@codeaurora.org>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1591155451-10393-1-git-send-email-jsanka@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit eadf79286a4badebc95af7061530bdb50a7e6f38 upstream.
Writing to the devfreq sysfs nodes while the GPU is powered down can
result in a system crash (on a5xx) or a nasty GMU error (on a6xx):
$ /sys/class/devfreq/5000000.gpu# echo 500000000 > min_freq
[ 104.841625] platform 506a000.gmu: [drm:a6xx_gmu_set_oob]
*ERROR* Timeout waiting for GMU OOB set GPU_DCVS: 0x0
Despite the fact that we carefully try to suspend the devfreq device when
the hardware is powered down there are lots of holes in the governors that
don't check for the suspend state and blindly call into the devfreq
callbacks that end up triggering hardware reads in the GPU driver.
Call pm_runtime_get_if_in_use() in the gpu_busy() and gpu_set_freq()
callbacks to skip the hardware access if it isn't active.
v3: Only check pm_runtime_get_if_in_use() for == 0 per Eric Anholt
v2: Use pm_runtime_get_if_in_use() per Eric Anholt
Cc: stable@vger.kernel.org
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d96536f0fe699729a0974eb5b65eb0d87cc747e1 upstream.
Make sure to select the port's AUX power domain while holding the TC
port lock. The domain depends on the port's current TC mode, which may
get changed under us if we're not holding the lock.
This was left out from
commit 8c10e22626 ("drm/i915: Keep the TypeC port mode fixed for detect/AUX transfers")
Cc: <stable@vger.kernel.org> # v5.4+
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200514204553.27193-1-imre.deak@intel.com
(cherry picked from commit ae9b6cfe1352da25931bce3ea4acfd4dc1ac8a85)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b3583fca5fb654af2cfc1c08259abb9728272538 upstream.
If both the tracer and the tracee are compat processes, and gprs[2]
is assigned a value by __poke_user_compat, then the higher 32 bits
of gprs[2] are cleared, IS_ERR_VALUE() always returns false, and
syscall_get_error() always returns 0.
Fix the implementation by sign-extending the value for compat processes
the same way as x86 implementation does.
The bug was exposed to user space by commit 201766a20e ("ptrace: add
PTRACE_GET_SYSCALL_INFO request") and detected by strace test suite.
This change fixes strace syscall tampering on s390.
Link: https://lkml.kernel.org/r/20200602180051.GA2427@altlinux.org
Fixes: 753c4dd6a2 ("[S390] ptrace changes")
Cc: Elvira Khabirova <lineprinter@altlinux.org>
Cc: stable@vger.kernel.org # v2.6.28+
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit fc3bb095ab02b9e7d89a069ade2cead15c64c504 ]
If the dentry name passed to ->d_compare() fits in dentry::d_iname, then
it may be concurrently modified by a rename. This can cause undefined
behavior (possibly out-of-bounds memory accesses or crashes) in
utf8_strncasecmp(), since fs/unicode/ isn't written to handle strings
that may be concurrently modified.
Fix this by first copying the filename to a stack buffer if needed.
This way we get a stable snapshot of the filename.
Fixes: 2c2eb7a300 ("f2fs: Support case-insensitive file name lookups")
Cc: <stable@vger.kernel.org> # v5.4+
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Daniel Rosenberg <drosen@google.com>
Cc: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit f874fa1c7c7905c1744a2037a11516558ed00a81 ]
Sharing f2fs_ci_compare() between comparing cached dentries
(f2fs_d_compare()) and comparing on-disk dentries (f2fs_match_name())
doesn't work as well as intended, as these actions fundamentally differ
in several ways (e.g. whether the task may sleep, whether the directory
is stable, whether the casefolded name was precomputed, whether the
dentry will need to be decrypted once we allow casefold+encrypt, etc.)
Just make f2fs_d_compare() implement what it needs directly, and rework
f2fs_ci_compare() to be specialized for f2fs_match_name().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
