Here's an assortment of drive-by fixes for the new AMD SPI driver.
All of them are compile-tested only.
Lukas Wunner (5):
spi: amd: Fix duplicate iounmap in error path
spi: amd: Pass probe errors back to driver core
spi: amd: Drop duplicate driver data assignments
spi: amd: Fix refcount underflow on remove
spi: amd: Drop superfluous member from struct amd_spi
drivers/spi/spi-amd.c | 27 +++++----------------------
1 file changed, 5 insertions(+), 22 deletions(-)
--
2.26.2
The AMD SPI driver stores a pointer to the spi_master in struct amd_spi
so that it can get from the latter to the former in amd_spi_fifo_xfer().
It's simpler to just pass the pointer from the sole caller
amd_spi_master_transfer() and drop the pointer from struct amd_spi.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/a088b684ad292faf3bd036e51529e608e5c94638.1588590210.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
The AMD SPI driver calls spi_master_put() in its ->remove() hook even
though the preceding call to spi_unregister_master() already drops a
ref, thus leading to a refcount underflow. Drop the superfluous call
to spi_master_put().
This only leaves the call to spi_unregister_master() in the ->remove()
hook, so it's safe to change the ->probe() hook to use the devm version
of spi_register_master() and drop the ->remove() hook altogether.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/5e53ccdf1eecd4e015dba99d0d77389107f8a2e3.1588590210.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
The AMD SPI driver calls platform_set_drvdata() on probe even though
it's already been set by __spi_alloc_controller(). Likewise, it calls
platform_set_drvdata() on remove even though it's going to be set by
__device_release_driver(). Drop the duplicate assignments.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/499f8ad4759c2ff0f586e0459fb9a293faecff6d.1588590210.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
The AMD SPI driver uses devm_ioremap_resource() to map its registers, so
they're automatically unmapped via device_release() when the last ref on
the SPI controller is dropped. The additional iounmap() in the ->probe()
error path is thus unnecessary.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/497cc38ae2beb7900ae05a1463eb83ff96e2770e.1588590210.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Sparse reports a warning at atmel_spi_next_xfer_dma_submit()
warning: context imbalance in atmel_spi_next_xfer_dma_submit()
- unexpected unlock
The root cause is the missing annotation
at atmel_spi_next_xfer_dma_submit()
Add the missing __must_hold(&as->lock) annotation
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Link: https://lore.kernel.org/r/20200429225723.31258-3-jbi.octave@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
With a couple allies at Intel, and much badgering, I got confirmation
from Intel that at least BXT suffers from the same SPI chip-select
issue as Cannonlake (and beyond). The issue being that after going
through runtime suspend/resume, toggling the chip-select line without
also sending data does nothing.
Add the quirk to BXT to briefly toggle dynamic clock gating off and
on, forcing the fabric to wake up enough to notice the CS register
change.
Signed-off-by: Evan Green <evgreen@chromium.org>
Cc: Shobhit Srivastava <shobhit.srivastava@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200427163238.1.Ib1faaabe236e37ea73be9b8dcc6aa034cb3c8804@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
Fix to return negative error code -EPROBE_DEFER from the DMA probe defer
error handling case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200429075855.104487-1-weiyongjun1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Fixes: bbb336f39e ("spi: spi-amd: Add AMD SPI controller driver support")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200429025426.167664-1-weiyongjun1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This driver supports SPI Controller for AMD SOCs.This driver
supports SPI operations using FIFO mode of transfer.
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/1587844788-33997-1-git-send-email-sanju.mehta@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge tag '5.7-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Five cifs/smb3 fixes:two for DFS reconnect failover, one lease fix for
stable and the others to fix a missing spinlock during reconnect"
* tag '5.7-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix uninitialised lease_key in open_shroot()
cifs: ensure correct super block for DFS reconnect
cifs: do not share tcons with DFS
cifs: minor update to comments around the cifs_tcp_ses_lock mutex
cifs: protect updating server->dstaddr with a spinlock
Here are a number of USB driver fixes for 5.7-rc3.
Nothing huge, just the usual collection of:
- xhci fixes
- gadget driver fixes
- syzkaller fuzzing fixes
- new device ids and DT bindings
- new quirks added for broken devices
A few of the gadget driver fixes show up twice here as they were applied
to my branch, and also by Felipe to his branch which I then pulled in as
we got out of sync a bit.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of USB driver fixes for 5.7-rc3.
Nothing huge, just the usual collection of:
- xhci fixes
- gadget driver fixes
- syzkaller fuzzing fixes
- new device ids and DT bindings
- new quirks added for broken devices
A few of the gadget driver fixes show up twice here as they were
applied to my branch, and also by Felipe to his branch which I then
pulled in as we got out of sync a bit.
All of these have been in linux-next with no reported issues"
* tag 'usb-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
USB: sisusbvga: Change port variable from signed to unsigned
usb-storage: Add unusual_devs entry for JMicron JMS566
USB: hub: Revert commit bd0e6c9614 ("usb: hub: try old enumeration scheme first for high speed devices")
USB: hub: Fix handling of connect changes during sleep
usb: typec: altmode: Fix typec_altmode_get_partner sometimes returning an invalid pointer
xhci: Don't clear hub TT buffer on ep0 protocol stall
xhci: prevent bus suspend if a roothub port detected a over-current condition
xhci: Fix handling halted endpoint even if endpoint ring appears empty
usb: raw-gadget: Fix copy_to/from_user() checks
usb: raw-gadget: fix raw_event_queue_fetch locking
usb: gadget: udc: atmel: Fix vbus disconnect handling
usb: dwc3: gadget: Fix request completion check
USB: Add USB_QUIRK_DELAY_CTRL_MSG and USB_QUIRK_DELAY_INIT for Corsair K70 RGB RAPIDFIRE
phy: tegra: Select USB_COMMON for usb_get_maximum_speed()
usb: typec: tcpm: Ignore CC and vbus changes in PORT_RESET change
usb: f_fs: Clear OS Extended descriptor counts to zero in ffs_data_reset()
cdc-acm: introduce a cool down
cdc-acm: close race betrween suspend() and acm_softint
UAS: fix deadlock in error handling and PM flushing work
UAS: no use logging any details in case of ENODEV
...
Here are some tty and serial driver fixes for 5.7-rc3.
The "largest" in here are a number of reverts for previous changes to
the uartps serial driver that turned out to not be a good idea at all.
The others are just small fixes found by people and tools. Included in
here is a much-reported symbol export needed by previous changes that
happened in 5.7-rc1. 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-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some tty and serial driver fixes for 5.7-rc3.
The "largest" in here are a number of reverts for previous changes to
the uartps serial driver that turned out to not be a good idea at all.
The others are just small fixes found by people and tools. Included in
here is a much-reported symbol export needed by previous changes that
happened in 5.7-rc1. All of these have been in linux-next for a while
with no reported issues"
* tag 'tty-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: hvc: fix buffer overflow during hvc_alloc().
tty: rocket, avoid OOB access
tty: serial: bcm63xx: fix missing clk_put() in bcm63xx_uart
vt: don't hardcode the mem allocation upper bound
tty: serial: owl: add "much needed" clk_prepare_enable()
vt: don't use kmalloc() for the unicode screen buffer
tty/sysrq: Export sysrq_mask(), sysrq_toggle_support()
serial: sh-sci: Make sure status register SCxSR is read in correct sequence
serial: sunhv: Initialize lock for non-registered console
Revert "serial: uartps: Register own uart console and driver structures"
Revert "serial: uartps: Move Port ID to device data structure"
Revert "serial: uartps: Change uart ID port allocation"
Revert "serial: uartps: Do not allow use aliases >= MAX_UART_INSTANCES"
Revert "serial: uartps: Fix error path when alloc failed"
Revert "serial: uartps: Use the same dynamic major number for all ports"
Revert "serial: uartps: Fix uartps_major handling"
Here are 4 small misc driver fixes for 5.7-rc3:
- mei driver fix
- interconnect driver fix
- 2 fpga driver fixes
All have been in linux-next with no reported issue
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are 4 small misc driver fixes for 5.7-rc3:
- mei driver fix
- interconnect driver fix
- two fpga driver fixes
All have been in linux-next with no reported issues"
* tag 'char-misc-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
interconnect: qcom: Fix uninitialized tcs_cmd::wait
mei: me: fix irq number stored in hw struct
fpga: dfl: pci: fix return value of cci_pci_sriov_configure
fpga: zynq: Remove clk_get error message for probe defer
Here are some small staging and IIO driver fixes for 5.7-rc3
Lots of tiny things for reported issues in staging and IIO drivers,
including a counter driver fix as well (the iio drivers seem to be tied
to those). Full details of the fixes are in the shortlog.
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-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO driver fixes from Greg KH:
"Here are some small staging and IIO driver fixes for 5.7-rc3
Lots of tiny things for reported issues in staging and IIO drivers,
including a counter driver fix as well (the iio drivers seem to be
tied to those). Full details of the fixes are in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (27 commits)
staging: vt6656: Fix calling conditions of vnt_set_bss_mode
staging: comedi: Fix comedi_device refcnt leak in comedi_open
staging: vt6656: Fix pairwise key entry save.
staging: vt6656: Fix drivers TBTT timing counter.
staging: vt6656: Don't set RCR_MULTICAST or RCR_BROADCAST by default.
MAINTAINERS: remove Stefan Popa's email
iio: adc: ad7192: fix null pointer de-reference crash during probe
iio: core: remove extra semi-colon from devm_iio_device_register() macro
iio: adc: ti-ads8344: properly byte swap value
iio: imu: inv_mpu6050: fix suspend/resume with runtime power
iio: st_sensors: rely on odr mask to know if odr can be set
iio: xilinx-xadc: Make sure not exceed maximum samplerate
iio: xilinx-xadc: Fix sequencer configuration for aux channels in simultaneous mode
iio: xilinx-xadc: Fix clearing interrupt when enabling trigger
iio: xilinx-xadc: Fix ADC-B powerdown
iio: dac: ad5770r: fix off-by-one check on maximum number of channels
iio: imu: st_lsm6dsx: flush hw FIFO before resetting the device
iio: core: Fix handling of 'dB'
dt-bindings: iio: adc: stm32-adc: fix id relative path
counter: 104-quad-8: Add lock guards - generic interface
...
Here are some small firmware/driver core/debugfs fixes for 5.7-rc3.
The debugfs change is now possible as now the last users of
debugfs_create_u32() have been fixed up in the different trees that got
merged into 5.7-rc1, and I don't want it creeping back in.
The firmware changes did cause a regression in linux-next, so the final
patch here reverts part of that, re-exporting the symbol to resolve that
issue. All of these patches, with the exception of the final one, have
been in linux-next with only that one reported issue.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are some small firmware/driver core/debugfs fixes for 5.7-rc3.
The debugfs change is now possible as now the last users of
debugfs_create_u32() have been fixed up in the different trees that
got merged into 5.7-rc1, and I don't want it creeping back in.
The firmware changes did cause a regression in linux-next, so the
final patch here reverts part of that, re-exporting the symbol to
resolve that issue. All of these patches, with the exception of the
final one, have been in linux-next with only that one reported issue"
* tag 'driver-core-5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
firmware_loader: revert removal of the fw_fallback_config export
debugfs: remove return value of debugfs_create_u32()
firmware_loader: remove unused exports
firmware: imx: fix compile-testing
- Add few notrace annotations to avoid potential crashes when switching
ftrace tracers.
- Avoid setting affinity for floating irqs in pci code.
- Fix build issue found by kbuild test robot.
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Merge tag 's390-5.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- Add a few notrace annotations to avoid potential crashes when
switching ftrace tracers.
- Avoid setting affinity for floating irqs in pci code.
- Fix build issue found by kbuild test robot.
* tag 's390-5.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/protvirt: fix compilation issue
s390/pci: do not set affinity for floating irqs
s390/ftrace: fix potential crashes when switching tracers
- One important fix for a bug in the way we find the cache-line size from the
device tree, which was leading to the wrong size being reported to userspace
on some platforms.
- A fix for 8xx STRICT_KERNEL_RWX which was leaving TLB entries around leading
to a window at boot when the strict mapping wasn't enforced.
- A fix to enable our KUAP (kernel user access prevention) debugging on PPC32.
- A build fix for clang in lib/mpi.
Thanks to:
Chris Packham, Christophe Leroy, Nathan Chancellor, Qian Cai.
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Merge tag 'powerpc-5.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- One important fix for a bug in the way we find the cache-line size
from the device tree, which was leading to the wrong size being
reported to userspace on some platforms.
- A fix for 8xx STRICT_KERNEL_RWX which was leaving TLB entries around
leading to a window at boot when the strict mapping wasn't enforced.
- A fix to enable our KUAP (kernel user access prevention) debugging on
PPC32.
- A build fix for clang in lib/mpi.
Thanks to: Chris Packham, Christophe Leroy, Nathan Chancellor, Qian Cai.
* tag 'powerpc-5.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
lib/mpi: Fix building for powerpc with clang
powerpc/mm: Fix CONFIG_PPC_KUAP_DEBUG on PPC32
powerpc/8xx: Fix STRICT_KERNEL_RWX startup test failure
powerpc/setup_64: Set cache-line-size based on cache-block-size
A couple of schema and kbuild fixes.
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Merge tag 'devicetree-fixes-for-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull more Devicetree fixes from Rob Herring:
"A couple of schema and kbuild fixes"
* tag 'devicetree-fixes-for-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: phy: qcom-qusb2: Fix defaults
dt-bindings: Fix erroneous 'additionalProperties'
dt-bindings: Fix command line length limit calling dt-mk-schema
dt-bindings: Re-enable core schemas for dtbs_check
Christoph's patch removed two unsused exported symbols, however, one
symbol is used by the firmware_loader itself. If CONFIG_FW_LOADER=m so
the firmware_loader is modular but CONFIG_FW_LOADER_USER_HELPER=y we fail
the build at mostpost.
ERROR: modpost: "fw_fallback_config" [drivers/base/firmware_loader/firmware_class.ko] undefined!
This happens because the variable fw_fallback_config is built into the
kernel if CONFIG_FW_LOADER_USER_HELPER=y always, so we need to grant
access to the firmware loader module by exporting it.
Revert only one hunk from his patch.
Fixes: 739604734b ("firmware_loader: remove unused exports")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20200424184916.22843-1-mcgrof@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull pid leak fix from Eric Biederman:
"Oleg noticed that put_pid(thread_pid) was not getting called when proc
was not compiled in.
Let's get that fixed before 5.7 is released and causes problems for
anyone"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
proc: Put thread_pid in release_task not proc_flush_pid
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixlet from Ingo Molnar:
"A single fix for a comment that may show up in DocBook output"
* tag 'timers-urgent-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
vdso/datapage: Use correct clock mode name in comment
- an uclamp accounting fix
- three frequency invariance fixes and a readability improvement
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Misc fixes:
- an uclamp accounting fix
- three frequency invariance fixes and a readability improvement"
* tag 'sched-urgent-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Fix reset-on-fork from RT with uclamp
x86, sched: Move check for CPU type to caller function
x86, sched: Don't enable static key when starting secondary CPUs
x86, sched: Account for CPUs with less than 4 cores in freq. invariance
x86, sched: Bail out of frequency invariance if base frequency is unknown
- fix exit event records
- extend x86 PMU driver enumeration to add Intel Jasper Lake CPU support.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Two changes:
- fix exit event records
- extend x86 PMU driver enumeration to add Intel Jasper Lake CPU
support"
* tag 'perf-urgent-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: fix parent pid/tid in task exit events
perf/x86/cstate: Add Jasper Lake CPU support
The kernel fails to compile with CONFIG_PROTECTED_VIRTUALIZATION_GUEST
set but CONFIG_KVM unset.
This patch fixes the issue by making the needed variable always available.
Link: https://lkml.kernel.org/r/20200423120114.2027410-1-imbrenda@linux.ibm.com
Fixes: a0f60f8431 ("s390/protvirt: Add sysfs firmware interface for Ultravisor information")
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Philipp Rudo <prudo@linux.ibm.com>
Suggested-by: Philipp Rudo <prudo@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Pull networking fixes from David Miller:
1) Fix memory leak in netfilter flowtable, from Roi Dayan.
2) Ref-count leaks in netrom and tipc, from Xiyu Yang.
3) Fix warning when mptcp socket is never accepted before close, from
Florian Westphal.
4) Missed locking in ovs_ct_exit(), from Tonghao Zhang.
5) Fix large delays during PTP synchornization in cxgb4, from Rahul
Lakkireddy.
6) team_mode_get() can hang, from Taehee Yoo.
7) Need to use kvzalloc() when allocating fw tracer in mlx5 driver,
from Niklas Schnelle.
8) Fix handling of bpf XADD on BTF memory, from Jann Horn.
9) Fix BPF_STX/BPF_B encoding in x86 bpf jit, from Luke Nelson.
10) Missing queue memory release in iwlwifi pcie code, from Johannes
Berg.
11) Fix NULL deref in macvlan device event, from Taehee Yoo.
12) Initialize lan87xx phy correctly, from Yuiko Oshino.
13) Fix looping between VRF and XFRM lookups, from David Ahern.
14) etf packet scheduler assumes all sockets are full sockets, which is
not necessarily true. From Eric Dumazet.
15) Fix mptcp data_fin handling in RX path, from Paolo Abeni.
16) fib_select_default() needs to handle nexthop objects, from David
Ahern.
17) Use GFP_ATOMIC under spinlock in mac80211_hwsim, from Wei Yongjun.
18) vxlan and geneve use wrong nlattr array, from Sabrina Dubroca.
19) Correct rx/tx stats in bcmgenet driver, from Doug Berger.
20) BPF_LDX zero-extension is encoded improperly in x86_32 bpf jit, fix
from Luke Nelson.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (100 commits)
selftests/bpf: Fix a couple of broken test_btf cases
tools/runqslower: Ensure own vmlinux.h is picked up first
bpf: Make bpf_link_fops static
bpftool: Respect the -d option in struct_ops cmd
selftests/bpf: Add test for freplace program with expected_attach_type
bpf: Propagate expected_attach_type when verifying freplace programs
bpf: Fix leak in LINK_UPDATE and enforce empty old_prog_fd
bpf, x86_32: Fix logic error in BPF_LDX zero-extension
bpf, x86_32: Fix clobbering of dst for BPF_JSET
bpf, x86_32: Fix incorrect encoding in BPF_LDX zero-extension
bpf: Fix reStructuredText markup
net: systemport: suppress warnings on failed Rx SKB allocations
net: bcmgenet: suppress warnings on failed Rx SKB allocations
macsec: avoid to set wrong mtu
mac80211: sta_info: Add lockdep condition for RCU list usage
mac80211: populate debugfs only after cfg80211 init
net: bcmgenet: correct per TX/RX ring statistics
net: meth: remove spurious copyright text
net: phy: bcm84881: clear settings on link down
chcr: Fix CPU hard lockup
...
Alexei Starovoitov says:
====================
pull-request: bpf 2020-04-24
The following pull-request contains BPF updates for your *net* tree.
We've added 17 non-merge commits during the last 5 day(s) which contain
a total of 19 files changed, 203 insertions(+), 85 deletions(-).
The main changes are:
1) link_update fix, from Andrii.
2) libbpf get_xdp_id fix, from David.
3) xadd verifier fix, from Jann.
4) x86-32 JIT fixes, from Luke and Wang.
5) test_btf fix, from Stanislav.
6) freplace verifier fix, from Toke.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Reorder include paths to ensure that runqslower sources are picking up
vmlinux.h, generated by runqslower's own Makefile. When runqslower is built
from selftests/bpf, due to current -I$(BPF_INCLUDE) -I$(OUTPUT) ordering, it
might pick up not-yet-complete vmlinux.h, generated by selftests Makefile,
which could lead to compilation errors like [0]. So ensure that -I$(OUTPUT)
goes first and rely on runqslower's Makefile own dependency chain to ensure
vmlinux.h is properly completed before source code relying on it is compiled.
[0] https://travis-ci.org/github/libbpf/libbpf/jobs/677905925
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200422012407.176303-1-andriin@fb.com
Fix the following sparse warning:
kernel/bpf/syscall.c:2289:30: warning: symbol 'bpf_link_fops' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/1587609160-117806-1-git-send-email-zou_wei@huawei.com
In the prog cmd, the "-d" option turns on the verifier log.
This is missed in the "struct_ops" cmd and this patch fixes it.
Fixes: 65c9362859 ("bpftool: Add struct_ops support")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200424182911.1259355-1-kafai@fb.com
This adds a new selftest that tests the ability to attach an freplace
program to a program type that relies on the expected_attach_type of the
target program to pass verification.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/158773526831.293902.16011743438619684815.stgit@toke.dk
For some program types, the verifier relies on the expected_attach_type of
the program being verified in the verification process. However, for
freplace programs, the attach type was not propagated along with the
verifier ops, so the expected_attach_type would always be zero for freplace
programs.
This in turn caused the verifier to sometimes make the wrong call for
freplace programs. For all existing uses of expected_attach_type for this
purpose, the result of this was only false negatives (i.e., freplace
functions would be rejected by the verifier even though they were valid
programs for the target they were replacing). However, should a false
positive be introduced, this can lead to out-of-bounds accesses and/or
crashes.
The fix introduced in this patch is to propagate the expected_attach_type
to the freplace program during verification, and reset it after that is
done.
Fixes: be8704ff07 ("bpf: Introduce dynamic program extensions")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/158773526726.293902.13257293296560360508.stgit@toke.dk
Fix bug of not putting bpf_link in LINK_UPDATE command.
Also enforce zeroed old_prog_fd if no BPF_F_REPLACE flag is specified.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200424052045.4002963-1-andriin@fb.com
When verifier_zext is true, we don't need to emit code
for zero-extension.
Fixes: 836256bf5f ("x32: bpf: eliminate zero extension code-gen")
Signed-off-by: Wang YanQing <udknight@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200423050637.GA4029@udknight
The current JIT clobbers the destination register for BPF_JSET BPF_X
and BPF_K by using "and" and "or" instructions. This is fine when the
destination register is a temporary loaded from a register stored on
the stack but not otherwise.
This patch fixes the problem (for both BPF_K and BPF_X) by always loading
the destination register into temporaries since BPF_JSET should not
modify the destination register.
This bug may not be currently triggerable as BPF_REG_AX is the only
register not stored on the stack and the verifier uses it in a limited
way.
Fixes: 03f5781be2 ("bpf, x86_32: add eBPF JIT compiler for ia32")
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Wang YanQing <udknight@gmail.com>
Link: https://lore.kernel.org/bpf/20200422173630.8351-2-luke.r.nels@gmail.com
The current JIT uses the following sequence to zero-extend into the
upper 32 bits of the destination register for BPF_LDX BPF_{B,H,W},
when the destination register is not on the stack:
EMIT3(0xC7, add_1reg(0xC0, dst_hi), 0);
The problem is that C7 /0 encodes a MOV instruction that requires a 4-byte
immediate; the current code emits only 1 byte of the immediate. This
means that the first 3 bytes of the next instruction will be treated as
the rest of the immediate, breaking the stream of instructions.
This patch fixes the problem by instead emitting "xor dst_hi,dst_hi"
to clear the upper 32 bits. This fixes the problem and is more efficient
than using MOV to load a zero immediate.
This bug may not be currently triggerable as BPF_REG_AX is the only
register not stored on the stack and the verifier uses it in a limited
way, and the verifier implements a zero-extension optimization. But the
JIT should avoid emitting incorrect encodings regardless.
Fixes: 03f5781be2 ("bpf, x86_32: add eBPF JIT compiler for ia32")
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Acked-by: Wang YanQing <udknight@gmail.com>
Link: https://lore.kernel.org/bpf/20200422173630.8351-1-luke.r.nels@gmail.com
The driver is designed to drop Rx packets and reclaim the buffers
when an allocation fails, and the network interface needs to safely
handle this packet loss. Therefore, an allocation failure of Rx
SKBs is relatively benign.
However, the output of the warning message occurs with a high
scheduling priority that can cause excessive jitter/latency for
other high priority processing.
This commit suppresses the warning messages to prevent scheduling
problems while retaining the failure count in the statistics of
the network interface.
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The driver is designed to drop Rx packets and reclaim the buffers
when an allocation fails, and the network interface needs to safely
handle this packet loss. Therefore, an allocation failure of Rx
SKBs is relatively benign.
However, the output of the warning message occurs with a high
scheduling priority that can cause excessive jitter/latency for
other high priority processing.
This commit suppresses the warning messages to prevent scheduling
problems while retaining the failure count in the statistics of
the network interface.
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When a macsec interface is created, the mtu is calculated with the lower
interface's mtu value.
If the mtu of lower interface is lower than the length, which is needed
by macsec interface, macsec's mtu value will be overflowed.
So, if the lower interface's mtu is too low, macsec interface's mtu
should be set to 0.
Test commands:
ip link add dummy0 mtu 10 type dummy
ip link add macsec0 link dummy0 type macsec
ip link show macsec0
Before:
11: macsec0@dummy0: <BROADCAST,MULTICAST,M-DOWN> mtu 4294967274
After:
11: macsec0@dummy0: <BROADCAST,MULTICAST,M-DOWN> mtu 0
Fixes: c09440f7dc ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Two minor fixes one to update a Kconfig reference and the other to fix
an unreleased resource on an error path in sg.
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:
"Two minor fixes: one to update a Kconfig reference and the other to
fix a resource leak on an error path in sg"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: Update referenced link to cdrtools
scsi: sg: add sg_remove_request in sg_write
