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There are many places where kmap/memove/kunmap patterns occur.
This pattern exists in the core common function copy_highpage().
Use copy_highpage to avoid open coding the use of kmap and leverages the
core functions use of kmap_local_page().
Development of this patch was aided by the following coccinelle script:
// <smpl>
// SPDX-License-Identifier: GPL-2.0-only
// Find kmap/copypage/kunmap pattern and replace with copy_highpage calls
//
// NOTE: The expressions in the copy page version of this kmap pattern are
// overly complex and so these all need individual attention.
//
// Confidence: Low
// Copyright: (C) 2021 Intel Corporation
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options:
//
// Then a copy_page where we have 2 pages involved.
//
@ copy_page_rule @
expression page, page2, To, From, Size;
identifier ptr, ptr2;
type VP, VP2;
@@
/* kmap */
(
-VP ptr = kmap(page);
...
-VP2 ptr2 = kmap(page2);
|
-VP ptr = kmap_atomic(page);
...
-VP2 ptr2 = kmap_atomic(page2);
|
-ptr = kmap(page);
...
-ptr2 = kmap(page2);
|
-ptr = kmap_atomic(page);
...
-ptr2 = kmap_atomic(page2);
)
// 1 or more copy versions of the entire page
<+...
(
-copy_page(To, From);
+copy_highpage(To, From);
|
-memmove(To, From, Size);
+memmoveExtra(To, From, Size);
)
...+>
/* kunmap */
(
-kunmap(page2);
...
-kunmap(page);
|
-kunmap(page);
...
-kunmap(page2);
|
-kmap_atomic(ptr2);
...
-kmap_atomic(ptr);
)
// Remove any pointers left unused
@
depends on copy_page_rule
@
identifier copy_page_rule.ptr;
identifier copy_page_rule.ptr2;
type VP, VP1;
type VP2, VP21;
@@
-VP ptr;
... when != ptr;
? VP1 ptr;
-VP2 ptr2;
... when != ptr2;
? VP21 ptr2;
// </smpl>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Ira Weiny <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
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There are many places where the pattern kmap/memcpy/kunmap occurs.
This pattern was lifted to the core common functions
memcpy_[to|from]_page().
Use these new functions to reduce the code, eliminate direct uses of
kmap, and leverage the new core functions use of kmap_local_page().
Also, there is 1 place where a kmap/memcpy is followed by an
optional memset. Here we leave the kmap open coded to avoid remapping
the page but use kmap_local_page() directly.
Development of this patch was aided by the coccinelle script:
// <smpl>
// SPDX-License-Identifier: GPL-2.0-only
// Find kmap/memcpy/kunmap pattern and replace with memcpy*page calls
//
// NOTE: Offsets and other expressions may be more complex than what the script
// will automatically generate. Therefore a catchall rule is provided to find
// the pattern which then must be evaluated by hand.
//
// Confidence: Low
// Copyright: (C) 2021 Intel Corporation
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options:
//
// simple memcpy version
//
@ memcpy_rule1 @
expression page, T, F, B, Off;
identifier ptr;
type VP;
@@
(
-VP ptr = kmap(page);
|
-ptr = kmap(page);
|
-VP ptr = kmap_atomic(page);
|
-ptr = kmap_atomic(page);
)
<+...
(
-memcpy(ptr + Off, F, B);
+memcpy_to_page(page, Off, F, B);
|
-memcpy(ptr, F, B);
+memcpy_to_page(page, 0, F, B);
|
-memcpy(T, ptr + Off, B);
+memcpy_from_page(T, page, Off, B);
|
-memcpy(T, ptr, B);
+memcpy_from_page(T, page, 0, B);
)
...+>
(
-kunmap(page);
|
-kunmap_atomic(ptr);
)
// Remove any pointers left unused
@
depends on memcpy_rule1
@
identifier memcpy_rule1.ptr;
type VP, VP1;
@@
-VP ptr;
... when != ptr;
? VP1 ptr;
//
// Some callers kmap without a temp pointer
//
@ memcpy_rule2 @
expression page, T, Off, F, B;
@@
<+...
(
-memcpy(kmap(page) + Off, F, B);
+memcpy_to_page(page, Off, F, B);
|
-memcpy(kmap(page), F, B);
+memcpy_to_page(page, 0, F, B);
|
-memcpy(T, kmap(page) + Off, B);
+memcpy_from_page(T, page, Off, B);
|
-memcpy(T, kmap(page), B);
+memcpy_from_page(T, page, 0, B);
)
...+>
-kunmap(page);
// No need for the ptr variable removal
//
// Catch all
//
@ memcpy_rule3 @
expression page;
expression GenTo, GenFrom, GenSize;
identifier ptr;
type VP;
@@
(
-VP ptr = kmap(page);
|
-ptr = kmap(page);
|
-VP ptr = kmap_atomic(page);
|
-ptr = kmap_atomic(page);
)
<+...
(
//
// Some call sites have complex expressions within the memcpy
// match a catch all to be evaluated by hand.
//
-memcpy(GenTo, GenFrom, GenSize);
+memcpy_to_pageExtra(page, GenTo, GenFrom, GenSize);
+memcpy_from_pageExtra(GenTo, page, GenFrom, GenSize);
)
...+>
(
-kunmap(page);
|
-kunmap_atomic(ptr);
)
// Remove any pointers left unused
@
depends on memcpy_rule3
@
identifier memcpy_rule3.ptr;
type VP, VP1;
@@
-VP ptr;
... when != ptr;
? VP1 ptr;
// <smpl>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Ira Weiny <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
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When the driver starts to send a message with the MASTER_ID field
set (high speed), the whole I2C_ADDR register is overwritten including
MASTER_ID as the SLV_ADDR_MAS field is set.
This patch preserves already written fields in I2C_ADDR when writing
SLV_ADDR_MAS.
Fixes: 8a73cd4cfa15 ("i2c: exynos5: add High Speed I2C controller driver")
Signed-off-by: Mårten Lindahl <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Tested-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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This reverts commit e0371298ddc51761be257698554ea507ac8bf831. It was
accidently applied despite discussion still going on.
Signed-off-by: Wolfram Sang <[email protected]>
Acked-by: Stephen Boyd <[email protected]>
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IC_DATA_CMD[11] indicates the first data byte received after the address
phase for receive transfer in Master receiver or Slave receiver mode,
this bit was set in some transfer flow. IC_DATA_CMD[7:0] contains the
data to be transmitted or received on the I2C bus, so we should use the
lower 8 bits to get the real data length.
Signed-off-by: Liguang Zhang <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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The brcmstb_send_i2c_cmd currently has a condition that is (CMD_RD ||
CMD_WR) which always evaluates to true, while the obvious fix is to test
whether the cmd variable passed as parameter holds one of these two
values.
Fixes: dd1aa2524bc5 ("i2c: brcmstb: Add Broadcom settop SoC i2c controller driver")
Reported-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Acked-by: Florian Fainelli <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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To 2.31
Signed-off-by: Steve French <[email protected]>
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The iterator, ITER_DISCARD, that can only be used in READ mode and
just discards any data copied to it, was added to allow a network
filesystem to discard any unwanted data sent by a server.
Convert cifs_discard_from_socket() to use this.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Steve French <[email protected]>
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clang produces .eh_frame sections when CONFIG_GCOV_KERNEL is enabled,
even when -fno-asynchronous-unwind-tables is in KBUILD_CFLAGS:
$ make CC=clang vmlinux
...
ld: warning: orphan section `.eh_frame' from `init/main.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/version.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/do_mounts.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/do_mounts_initrd.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/initramfs.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/calibrate.o' being placed in section `.eh_frame'
ld: warning: orphan section `.eh_frame' from `init/init_task.o' being placed in section `.eh_frame'
...
$ rg "GCOV_KERNEL|GCOV_PROFILE_ALL" .config
CONFIG_GCOV_KERNEL=y
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
CONFIG_GCOV_PROFILE_ALL=y
This was already handled for a couple of other options in
commit d812db78288d ("vmlinux.lds.h: Avoid KASAN and KCSAN's unwanted
sections") and there is an open LLVM bug for this issue. Take advantage
of that section for this config as well so that there are no more orphan
warnings.
Link: https://bugs.llvm.org/show_bug.cgi?id=46478
Link: https://github.com/ClangBuiltLinux/linux/issues/1069
Reported-by: kernel test robot <[email protected]>
Reviewed-by: Fangrui Song <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Fixes: d812db78288d ("vmlinux.lds.h: Avoid KASAN and KCSAN's unwanted sections")
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm updates from Thierry Reding:
"The ZTE ZX platform is being removed, so the PWM driver is no longer
needed and removed as well.
Other than that this contains a small set of fixes and cleanups across
a couple of drivers"
* tag 'pwm/for-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: lpc18xx-sct: remove unneeded semicolon
pwm: iqs620a: Correct a stale state variable
pwm: iqs620a: Fix overflow and optimize calculations
pwm: rockchip: Enable clock before calling clk_get_rate()
pwm: rockchip: Eliminate potential race condition when probing
pwm: rockchip: Replace "bus clk" with "PWM clk"
pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare()
pwm: rockchip: Enable APB clock during register access while probing
pwm: Remove ZTE ZX driver
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Pull virtio updates from Michael Tsirkin:
- new vdpa features to allow creation and deletion of new devices
- virtio-blk support per-device queue depth
- fixes, cleanups all over the place
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (31 commits)
virtio-input: add multi-touch support
virtio_mmio: fix one typo
vdpa/mlx5: fix param validation in mlx5_vdpa_get_config()
virtio_net: Fix fall-through warnings for Clang
virtio_input: Prevent EV_MSC/MSC_TIMESTAMP loop storm for MT.
virtio-blk: support per-device queue depth
virtio_vdpa: don't warn when fail to disable vq
virtio-pci: introduce modern device module
virito-pci-modern: rename map_capability() to vp_modern_map_capability()
virtio-pci-modern: introduce helper to get notification offset
virtio-pci-modern: introduce helper for getting queue nums
virtio-pci-modern: introduce helper for setting/geting queue size
virtio-pci-modern: introduce helper to set/get queue_enable
virtio-pci-modern: introduce vp_modern_queue_address()
virtio-pci-modern: introduce vp_modern_set_queue_vector()
virtio-pci-modern: introduce vp_modern_generation()
virtio-pci-modern: introduce helpers for setting and getting features
virtio-pci-modern: introduce helpers for setting and getting status
virtio-pci-modern: introduce helper to set config vector
virtio-pci-modern: introduce vp_modern_remove()
...
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Instead of 'make distclean', 'make clean' should remove build artifacts
unneeded by external module builds. Obviously, you do not need to keep
this directory.
Fixes: dc5723b02e52 ("kbuild: add support for Clang LTO")
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
to tell that to the build system.
Reported-by: Guenter Roeck <[email protected]>
Fixes: 3b15cdc15956 ("tracing: move function tracer options to Kconfig")
Signed-off-by: Sami Tolvanen <[email protected]>
Tested-by: Guenter Roeck <[email protected]>
Tested-by: Kees Cook <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull more MIPS updates from Thomas Bogendoerfer:
- added n64 block driver
- fix for ubsan warnings
- fix for bcm63xx platform
- update of linux-mips mailinglist
* tag 'mips_5.12_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
arch: mips: update references to current linux-mips list
mips: bmips: init clocks earlier
vmlinux.lds.h: catch even more instrumentation symbols into .data
n64: store dev instance into disk private data
n64: cleanup n64cart_probe()
n64: cosmetics changes
n64: remove curly brackets
n64: use sector SECTOR_SHIFT instead 512
n64: use enums for reg
n64: move module param at the top
n64: move module info at the end
n64: use pr_fmt to avoid duplicate string
block: Add n64 cart driver
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Fix indentation snafu in proc.rst as reported by Stephen.
next-20210219/Documentation/filesystems/proc.rst:697: WARNING: Unexpected indentation.
Fixes: 93ea4a0b8fce ("Documentation: proc.rst: add more about the 6 fields in loadavg")
Reported-by: Stephen Rothwell <[email protected]>
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
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Pull more drm updates from Dave Airlie:
"This is mostly fixes but I missed msm-next pull last week. It's been
in drm-next.
Otherwise it's a selection of i915, amdgpu and misc fixes, one TTM
memory leak, nothing really major stands out otherwise.
core:
- vblank fence timing improvements
dma-buf:
- improve error handling
ttm:
- memory leak fix
msm:
- a6xx speedbin support
- a508, a509, a512 support
- various a5xx fixes
- various dpu fixes
- qseed3lite support for sm8250
- dsi fix for msm8994
- mdp5 fix for framerate bug with cmd mode panels
- a6xx GMU OOB race fixes that were showing up in CI
- various addition and removal of semicolons
- gem submit fix for legacy userspace relocs path
amdgpu:
- clang warning fix
- S0ix platform shutdown/poweroff fix
- misc display fixes
i915:
- color format fix
- -Wuninitialised reenabled
- GVT ww locking, cmd parser fixes
atyfb:
- fix build
rockchip:
- AFBC modifier fix"
* tag 'drm-next-2021-02-26' of git://anongit.freedesktop.org/drm/drm: (60 commits)
drm/panel: kd35t133: allow using non-continuous dsi clock
drm/rockchip: Require the YTR modifier for AFBC
drm/ttm: Fix a memory leak
drm/drm_vblank: set the dma-fence timestamp during send_vblank_event
dma-fence: allow signaling drivers to set fence timestamp
dma-buf: heaps: Rework heap allocation hooks to return struct dma_buf instead of fd
dma-buf: system_heap: Make sure to return an error if we abort
drm/amd/display: Fix system hang after multiple hotplugs (v3)
drm/amdgpu: fix shutdown and poweroff process failed with s0ix
drm/i915: Nuke INTEL_OUTPUT_FORMAT_INVALID
drm/i915: Enable -Wuninitialized
drm/amd/display: Remove Assert from dcn10_get_dig_frontend
drm/amd/display: Add vupdate_no_lock interrupts for DCN2.1
Revert "drm/amd/display: reuse current context instead of recreating one"
drm/amd/pm/swsmu: Avoid using structure_size uninitialized in smu_cmn_init_soft_gpu_metrics
fbdev: atyfb: add stubs for aty_{ld,st}_lcd()
drm/i915/gvt: Introduce per object locking in GVT scheduler.
drm/i915/gvt: Purge dev_priv->gt
drm/i915/gvt: Parse default state to update reg whitelist
dt-bindings: dp-connector: Drop maxItems from -supply
...
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This file has been moved into the "progs" subdirectory, together with all
test BPF programs.
Fixes: bd4aed0ee73c ("selftests: bpf: centre kernel bpf objects under new subdir "progs"")
Signed-off-by: Antonio Terceiro <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Zefan Li <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Jiong Wang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Rather small batch this time.
Current release - regressions:
- bcm63xx_enet: fix sporadic kernel panic due to queue length
mis-accounting
Current release - new code bugs:
- bcm4908_enet: fix RX path possible mem leak
- bcm4908_enet: fix NAPI poll returned value
- stmmac: fix missing spin_lock_init in visconti_eth_dwmac_probe()
- sched: cls_flower: validate ct_state for invalid and reply flags
Previous releases - regressions:
- net: introduce CAN specific pointer in the struct net_device to
prevent mis-interpreting memory
- phy: micrel: set soft_reset callback to genphy_soft_reset for
KSZ8081
- psample: fix netlink skb length with tunnel info
Previous releases - always broken:
- icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
- wireguard: device: do not generate ICMP for non-IP packets
- mptcp: provide subflow aware release function to avoid a mem leak
- hsr: add support for EntryForgetTime
- r8169: fix jumbo packet handling on RTL8168e
- octeontx2-af: fix an off by one in rvu_dbg_qsize_write()
- i40e: fix flow for IPv6 next header (extension header)
- phy: icplus: call phy_restore_page() when phy_select_page() fails
- dpaa_eth: fix the access method for the dpaa_napi_portal"
* tag 'net-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits)
r8169: fix jumbo packet handling on RTL8168e
net: phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081
net: psample: Fix netlink skb length with tunnel info
net: broadcom: bcm4908_enet: fix NAPI poll returned value
net: broadcom: bcm4908_enet: fix RX path possible mem leak
net: hsr: add support for EntryForgetTime
net: dsa: sja1105: Remove unneeded cast in sja1105_crc32()
ibmvnic: fix a race between open and reset
net: stmmac: Fix missing spin_lock_init in visconti_eth_dwmac_probe()
net: introduce CAN specific pointer in the struct net_device
net: usb: qmi_wwan: support ZTE P685M modem
wireguard: kconfig: use arm chacha even with no neon
wireguard: queueing: get rid of per-peer ring buffers
wireguard: device: do not generate ICMP for non-IP packets
wireguard: peer: put frequently used members above cache lines
wireguard: selftests: test multiple parallel streams
wireguard: socket: remove bogus __be32 annotation
wireguard: avoid double unlikely() notation when using IS_ERR()
net: qrtr: Fix memory leak in qrtr_tun_open
vxlan: move debug check after netdev unregister
...
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Commit 209b44c804c ("docs: powerpc: syscall64-abi.rst: fix a malformed
table") attempted to fix the formatting of tables in syscall64-abi.rst, but
inadvertently changed some register names.
Redo the tables with the correct register names, and while we're here,
clean things up to separate the registers into different rows and add
headings.
Fixes: 209b44c804c ("docs: powerpc: syscall64-abi.rst: fix a malformed table")
Signed-off-by: Andrew Donnellan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These make additional changes to the platform profile interface merged
recently and add support for the FPDT ACPI table.
Specifics:
- Rearrange Kconfig handling of ACPI_PLATFORM_PROFILE, add
"balanced-performance" to the list of supported platform profiles
and fix up some file references in a comment (Maximilian Luz).
- Add support for parsing the ACPI Firmware Performance Data Table
(FPDT) and exposing the data from there via sysfs (Zhang Rui)"
* tag 'acpi-5.12-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: platform: Add balanced-performance platform profile
ACPI: platform: Fix file references in comment
ACPI: platform: Hide ACPI_PLATFORM_PROFILE option
ACPI: tables: introduce support for FPDT table
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git://anongit.freedesktop.org/drm/drm-intel into drm-next
A fix for color format check from Ville, plus the re-enable of -Wuninitialized
from Nathan, and the GVT fixes including fixes for ww locking, cmd parser and
a general cleanup of dev_priv->gt.
Signed-off-by: Dave Airlie <[email protected]>
From: Rodrigo Vivi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-fixes-5.12-2021-02-24:
amdgpu:
- Clang warning fix
- S0ix platform shutdown/poweroff fix
- Misc display fixes
Signed-off-by: Dave Airlie <[email protected]>
From: Alex Deucher <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next tasty fixes for v5.12:
- Cherry pick of drm-misc-fixes pull:
"here's this week's PR for drm-misc-fixes. One of the patches is a memory
leak; the rest is for hardware issues."
- Fix dt bindings for dp connector.
- Fix build error in atyfb.
- Improve error handling for dma-buf heaps.
- Make vblank timestamp more correct, by recording timestamp to be set when signaling.
Signed-off-by: Dave Airlie <[email protected]>
From: Maarten Lankhorst <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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Run the update script to document the recent feature additions
on riscv, mips and csky.
Fixes: c109f42450ec ("csky: Add kmemleak support")
Fixes: 8b3165e54566 ("MIPS: Enable GCOV")
Fixes: 1ddc96bd42da ("MIPS: kernel: Support extracting off-line stack traces from user-space with perf")
Fixes: 74784081aac8 ("riscv: Add uprobes supported")
Fixes: 829adda597fe ("riscv: Add KPROBES_ON_FTRACE supported")
Fixes: c22b0bcb1dd0 ("riscv: Add kprobes supported")
Fixes: dcdc7a53a890 ("RISC-V: Implement ptrace regs and stack API")
Signed-off-by: Arnd Bergmann <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
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The references to arch/c6x are obsolete now that the architecture
is gone. Remove them.
Signed-off-by: Arnd Bergmann <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
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resolution
Some servers seem to mistakenly report different values for
capabilities and share flags, so we can't always rely on those values
to decide whether the resolved target can handle any new DFS
referrals.
Add a new helper is_referral_server() to check if all resolved targets
can handle new DFS referrals by directly looking at the
GET_DFS_REFERRAL.ReferralHeaderFlags value as specified in MS-DFSC
2.2.4 RESP_GET_DFS_REFERRAL in addition to is_tcon_dfs().
Signed-off-by: Paulo Alcantara (SUSE) <[email protected]>
Cc: [email protected] # 5.11
Signed-off-by: Steve French <[email protected]>
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Handle the case where a resolved target share is like
//server/users/dir, and the user "foo" has no read permission to
access the parent folder "users" but has access to the final path
component "dir".
is_path_remote() already implements that, so call it directly.
Signed-off-by: Paulo Alcantara (SUSE) <[email protected]>
Cc: [email protected] # 5.11
Signed-off-by: Steve French <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Fix false-positive build warnings for ARCH=ia64 builds
- Optimize dictionary size for module compression with xz
- Check the compiler and linker versions in Kconfig
- Fix misuse of extra-y
- Support DWARF v5 debug info
- Clamp SUBLEVEL to 255 because stable releases 4.4.x and 4.9.x
exceeded the limit
- Add generic syscall{tbl,hdr}.sh for cleanups across arches
- Minor cleanups of genksyms
- Minor cleanups of Kconfig
* tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (38 commits)
initramfs: Remove redundant dependency of RD_ZSTD on BLK_DEV_INITRD
kbuild: remove deprecated 'always' and 'hostprogs-y/m'
kbuild: parse C= and M= before changing the working directory
kbuild: reuse this-makefile to define abs_srctree
kconfig: unify rule of config, menuconfig, nconfig, gconfig, xconfig
kconfig: omit --oldaskconfig option for 'make config'
kconfig: fix 'invalid option' for help option
kconfig: remove dead code in conf_askvalue()
kconfig: clean up nested if-conditionals in check_conf()
kconfig: Remove duplicate call to sym_get_string_value()
Makefile: Remove # characters from compiler string
Makefile: reuse CC_VERSION_TEXT
kbuild: check the minimum linker version in Kconfig
kbuild: remove ld-version macro
scripts: add generic syscallhdr.sh
scripts: add generic syscalltbl.sh
arch: syscalls: remove $(srctree)/ prefix from syscall tables
arch: syscalls: add missing FORCE and fix 'targets' to make if_changed work
gen_compile_commands: prune some directories
kbuild: simplify access to the kernel's version
...
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In do_dfs_failover(), the mount_get_conns() function requires the full
fs context in order to get new connection to server, so clone the
original context and change it accordingly when retrying the DFS
targets in the referral.
If failover was successful, then update original context with the new
UNC, prefix path and ip address.
Signed-off-by: Paulo Alcantara (SUSE) <[email protected]>
Cc: [email protected] # 5.11
Signed-off-by: Steve French <[email protected]>
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Skip DFS resolving when mounting with 'nodfs' even if
CONFIG_CIFS_DFS_UPCALL is enabled.
Signed-off-by: Paulo Alcantara (SUSE) <[email protected]>
Cc: [email protected] # 5.11
Reviewed-by: Shyam Prasad N <[email protected]>
Signed-off-by: Steve French <[email protected]>
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Passwords can contain ',' which are also used as the separator between
mount options. Mount.cifs will escape all ',' characters as the string ",,".
Update parsing of the mount options to detect ",," and treat it as a single
'c' character.
Fixes: 24e0a1eff9e2 ("cifs: switch to new mount api")
Cc: [email protected] # 5.11
Reported-by: Simon Taylor <[email protected]>
Tested-by: Simon Taylor <[email protected]>
Signed-off-by: Ronnie Sahlberg <[email protected]>
Signed-off-by: Steve French <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Miscellaneous ext4 cleanups and bug fixes. Pretty boring this cycle..."
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: add .kunitconfig fragment to enable ext4-specific tests
ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it
ext4: reset retry counter when ext4_alloc_file_blocks() makes progress
ext4: fix potential htree index checksum corruption
ext4: factor out htree rep invariant check
ext4: Change list_for_each* to list_for_each_entry*
ext4: don't try to processed freed blocks until mballoc is initialized
ext4: use DEFINE_MUTEX() for mutex lock
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* acpi-tables:
ACPI: tables: introduce support for FPDT table
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Remove unnecessary locking around _OSC (Bjorn Helgaas)
- Clarify message about _OSC failure (Bjorn Helgaas)
- Remove notification of PCIe bandwidth changes (Bjorn Helgaas)
- Tidy checking of syscall user config accessors (Heiner Kallweit)
Resource management:
- Decline to resize resources if boot config must be preserved (Ard
Biesheuvel)
- Fix pci_register_io_range() memory leak (Geert Uytterhoeven)
Error handling (Keith Busch):
- Clear error status from the correct device
- Retain error recovery status so drivers can use it after reset
- Log the type of Port (Root or Switch Downstream) that we reset
- Always request a reset for Downstream Ports in frozen state
Endpoint framework and NTB (Kishon Vijay Abraham I):
- Make *_get_first_free_bar() take into account 64 bit BAR
- Add helper API to get the 'next' unreserved BAR
- Make *_free_bar() return error codes on failure
- Remove unused pci_epf_match_device()
- Add support to associate secondary EPC with EPF
- Add support in configfs to associate two EPCs with EPF
- Add pci_epc_ops to map MSI IRQ
- Add pci_epf_ops to expose function-specific attrs
- Allow user to create sub-directory of 'EPF Device' directory
- Implement ->msi_map_irq() ops for cadence
- Configure LM_EP_FUNC_CFG based on epc->function_num_map for cadence
- Add EP function driver to provide NTB functionality
- Add support for EPF PCI Non-Transparent Bridge
- Add specification for PCI NTB function device
- Add PCI endpoint NTB function user guide
- Add configfs binding documentation for pci-ntb endpoint function
Broadcom STB PCIe controller driver:
- Add support for BCM4908 and external PERST# signal controller
(Rafał Miłecki)
Cadence PCIe controller driver:
- Retrain Link to work around Gen2 training defect (Nadeem Athani)
- Fix merge botch in cdns_pcie_host_map_dma_ranges() (Krzysztof
Wilczyński)
Freescale Layerscape PCIe controller driver:
- Add LX2160A rev2 EP mode support (Hou Zhiqiang)
- Convert to builtin_platform_driver() (Michael Walle)
MediaTek PCIe controller driver:
- Fix OF node reference leak (Krzysztof Wilczyński)
Microchip PolarFlare PCIe controller driver:
- Add Microchip PolarFire PCIe controller driver (Daire McNamara)
Qualcomm PCIe controller driver:
- Use PHY_REFCLK_USE_PAD only for ipq8064 (Ansuel Smith)
- Add support for ddrss_sf_tbu clock for sm8250 (Dmitry Baryshkov)
Renesas R-Car PCIe controller driver:
- Drop PCIE_RCAR config option (Lad Prabhakar)
- Always allocate MSI addresses in 32bit space (Marek Vasut)
Rockchip PCIe controller driver:
- Add FriendlyARM NanoPi M4B DT binding (Chen-Yu Tsai)
- Make 'ep-gpios' DT property optional (Chen-Yu Tsai)
Synopsys DesignWare PCIe controller driver:
- Work around ECRC configuration hardware defect (Vidya Sagar)
- Drop support for config space in DT 'ranges' (Rob Herring)
- Change size to u64 for EP outbound iATU (Shradha Todi)
- Add upper limit address for outbound iATU (Shradha Todi)
- Make dw_pcie ops optional (Jisheng Zhang)
- Remove unnecessary dw_pcie_ops from al driver (Jisheng Zhang)
Xilinx Versal CPM PCIe controller driver:
- Fix OF node reference leak (Pan Bian)
Miscellaneous:
- Remove tango host controller driver (Arnd Bergmann)
- Remove IRQ handler & data together (altera-msi, brcmstb, dwc)
(Martin Kaiser)
- Fix xgene-msi race in installing chained IRQ handler (Martin
Kaiser)
- Apply CONFIG_PCI_DEBUG to entire drivers/pci hierarchy (Junhao He)
- Fix pci-bridge-emul array overruns (Russell King)
- Remove obsolete uses of WARN_ON(in_interrupt()) (Sebastian Andrzej
Siewior)"
* tag 'pci-v5.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (69 commits)
PCI: qcom: Use PHY_REFCLK_USE_PAD only for ipq8064
PCI: qcom: Add support for ddrss_sf_tbu clock
dt-bindings: PCI: qcom: Document ddrss_sf_tbu clock for sm8250
PCI: al: Remove useless dw_pcie_ops
PCI: dwc: Don't assume the ops in dw_pcie always exist
PCI: dwc: Add upper limit address for outbound iATU
PCI: dwc: Change size to u64 for EP outbound iATU
PCI: dwc: Drop support for config space in 'ranges'
PCI: layerscape: Convert to builtin_platform_driver()
PCI: layerscape: Add LX2160A rev2 EP mode support
dt-bindings: PCI: layerscape: Add LX2160A rev2 compatible strings
PCI: dwc: Work around ECRC configuration issue
PCI/portdrv: Report reset for frozen channel
PCI/AER: Specify the type of Port that was reset
PCI/ERR: Retain status from error notification
PCI/AER: Clear AER status from Root Port when resetting Downstream Port
PCI/ERR: Clear status of the reporting device
dt-bindings: arm: rockchip: Add FriendlyARM NanoPi M4B
PCI: rockchip: Make 'ep-gpios' DT property optional
Documentation: PCI: Add PCI endpoint NTB function user guide
...
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Josef reported [0] that using jumbo packets fails on RTL8168e.
Aligning the values for register MaxTxPacketSize with the
vendor driver fixes the problem.
[0] https://bugzilla.kernel.org/show_bug.cgi?id=211827
Fixes: d58d46b5d851 ("r8169: jumbo fixes.")
Reported-by: Josef Oškera <[email protected]>
Tested-by: Josef Oškera <[email protected]>
Signed-off-by: Heiner Kallweit <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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There is a spelling mistake in the -g help option, I believe
it should be "graph". There is also a spelling mistake in a
warning message. Fix both mistakes.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: Viktor Rosendahl <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
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Following a similar reinstate for the KSZ9031.
Older kernels would use the genphy_soft_reset if the PHY did not implement
a .soft_reset.
Bluntly removing that default may expose a lot of situations where various
PHYs/board implementations won't recover on various changes.
Like with this implementation during a 4.9.x to 5.4.x LTS transition.
I think it's a good thing to remove unwanted soft resets but wonder if it
did open a can of worms?
Atleast this fixes one iMX6 FEC/RMII/8081 combo.
Fixes: 6e2d85ec0559 ("net: phy: Stop with excessive soft reset")
Signed-off-by: Christian Melki <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux
Pull nds32 updates from Greentime Hu:
"Code clean-up and refinement"
* tag 'nds32-for-linux-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux:
nds32: Fix bogus reference to <asm/procinfo.h>
nds32: use get_kernel_nofault in dump_mem
nds32: remove dump_instr
nds32: configs: Cleanup CONFIG_CROSS_COMPILE
nds32: Replace <linux/clk-provider.h> by <linux/of_clk.h>
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The update to kmem_cache_free trace event added printing of the slab name in
the trace event. But it only stores the pointer of the name which will be
printed as a string when the event is read some time in the future. This is
dangerous because the name could be freed in the mean time and when reading
the trace event it would try to dereference the string name by the pointer
to the name that has been freed.
Instead, use the trace event helper macros __string(), __assign_str(), and
__get_str() that are for this very case.
Cc: Jacob Wen <[email protected]>
Fixes: 3544de8ee6e4 ("mm, tracing: record slab name for kmem_cache_free()")
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
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Currently, the psample netlink skb is allocated with a size that does
not account for the nested 'PSAMPLE_ATTR_TUNNEL' attribute and the
padding required for the 64-bit attribute 'PSAMPLE_TUNNEL_KEY_ATTR_ID'.
This can result in failure to add attributes to the netlink skb due
to insufficient tail room. The following error message is printed to
the kernel log: "Could not create psample log message".
Fix this by adjusting the allocation size to take into account the
nested attribute and the padding.
Fixes: d8bed686ab96 ("net: psample: Add tunnel support")
CC: Yotam Gigi <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Signed-off-by: Chris Mi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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timeout
The new optional mount parameter "acregmax" allows a different
timeout for file metadata ("acdirmax" now allows controlling timeout
for directory metadata). Setting "actimeo" still works as before,
and changes timeout for both files and directories, but
specifying "acregmax" or "acdirmax" allows overriding the
default more granularly which can be a big performance benefit
on some workloads. "acregmax" is already used by NFS as a mount
parameter (albeit with a larger default and thus looser caching).
Suggested-by: Tom Talpey <[email protected]>
Reviewed-By: Tom Talpey <[email protected]>
Reviewed-by: Ronnie Sahlberg <[email protected]>
Signed-off-by: Steve French <[email protected]>
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timeout
The new optional mount parm, "acdirmax" allows caching the metadata
for a directory longer than file metadata, which can be very helpful
for performance. Convert cifs_inode_needs_reval to check acdirmax
for revalidating directory metadata.
Signed-off-by: Steve French <[email protected]>
Reviewed-by: Ronnie Sahlberg <[email protected]>
Reviewed-By: Tom Talpey <[email protected]>
Signed-off-by: Steve French <[email protected]>
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nfs and cifs on Linux currently have a mount parameter "actimeo" to control
metadata (attribute) caching but cifs does not have additional mount
parameters to allow distinguishing between caching directory metadata
(e.g. needed to revalidate paths) and that for files.
Add new mount parameter "acdirmax" to allow caching metadata for
directories more loosely than file data. NFS adjusts metadata
caching from acdirmin to acdirmax (and another two mount parms
for files) but to reduce complexity, it is safer to just introduce
the one mount parm to allow caching directories longer. The
defaults for acdirmax and actimeo (for cifs.ko) are conservative,
1 second (NFS defaults acdirmax to 60 seconds). For many workloads,
setting acdirmax to a higher value is safe and will improve
performance. This patch leaves unchanged the default values
for caching metadata for files and directories but gives the
user more flexibility in adjusting them safely for their workload
via the new mount parm.
Signed-off-by: Steve French <[email protected]>
Reviewed-by: Ronnie Sahlberg <[email protected]>
Reviewed-By: Tom Talpey <[email protected]>
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Missing increment was resulting in poll function always returning 0
instead of amount of processed packets.
Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver")
Signed-off-by: Rafał Miłecki <[email protected]>
Acked-by: Florian Fainelli <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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After filling RX ring slot with new skb it's required to free old skb.
Immediately on error or later in the net subsystem.
Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver")
Signed-off-by: Rafał Miłecki <[email protected]>
Acked-by: Florian Fainelli <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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In IEC 62439-3 EntryForgetTime is defined with a value of 400 ms. When a
node does not send any frame within this time, the sequence number check
for can be ignored. This solves communication issues with Cisco IE 2000
in Redbox mode.
Fixes: f421436a591d ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)")
Signed-off-by: Marco Wenzel <[email protected]>
Reviewed-by: George McCollister <[email protected]>
Tested-by: George McCollister <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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sja1105_unpack() takes a "const void *buf" as its first parameter, so
there is no need to cast away the "const" of the "buf" variable before
calling it.
Drop the cast, as it prevents the compiler performing some checks.
Signed-off-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Vladimir Oltean <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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This flag is now dead, remove it.
Fixes: 1cbd9c2bcf02 ("io-wq: don't create any IO workers upfront")
Signed-off-by: Jens Axboe <[email protected]>
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Just like the changes for io-wq, ensure that we re-fork the SQPOLL
thread if the owner execs. Mark the ctx sq thread as sqo_exec if
it dies, and the ring as needing a wakeup which will force the task
to enter the kernel. When it does, setup the new thread and proceed
as usual.
Signed-off-by: Jens Axboe <[email protected]>
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exec will cancel any threads, including the ones that io-wq is using. This
isn't a problem, in fact we'd prefer it to be that way since it means we
know that any async work cancels naturally without having to handle it
proactively.
But it does mean that we need to setup a new manager, as the manager and
workers are gone. Handle this at queue time, and cancel work if we fail.
Since the manager can go away without us noticing, ensure that the manager
itself holds a reference to the 'wq' as well. Rename io_wq_destroy() to
io_wq_put() to reflect that.
In the future we can now simplify exec cancelation handling, for now just
leave it the same.
Signed-off-by: Jens Axboe <[email protected]>
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