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git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.6
The second pull request for v6.6, this time with both stack and driver
changes. Unusually we have only one major new feature but lots of
small cleanup all over, I guess this is due to people have been on
vacation the last month.
Major changes:
rtw89
- Introduce Time Averaged SAR (TAS) support
* tag 'wireless-next-2023-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (114 commits)
wifi: rtlwifi: rtl8723: Remove unused function rtl8723_cmd_send_packet()
wifi: rtw88: usb: kill and free rx urbs on probe failure
wifi: rtw89: Fix clang -Wimplicit-fallthrough in rtw89_query_sar()
wifi: rtw89: phy: modify register setting of ENV_MNTR, PHYSTS and DIG
wifi: rtw89: phy: add phy_gen_def::cr_base to support WiFi 7 chips
wifi: rtw89: mac: define register address of rx_filter to generalize code
wifi: rtw89: mac: define internal memory address for WiFi 7 chip
wifi: rtw89: mac: generalize code to indirectly access WiFi internal memory
wifi: rtw89: mac: add mac_gen_def::band1_offset to map MAC band1 register address
wifi: wlcore: sdio: Use module_sdio_driver macro to simplify the code
wifi: rtw89: initialize multi-channel handling
wifi: rtw89: provide functions to configure NoA for beacon update
wifi: rtw89: call rtw89_chan_get() by vif chanctx if aware of vif
wifi: rtw89: sar: let caller decide the center frequency to query
wifi: rtw89: refine rtw89_correct_cck_chan() by rtw89_hw_to_nl80211_band()
wifi: rtw89: add function prototype for coex request duration
Fix nomenclature for USB and PCI wireless devices
wifi: ath: Use is_multicast_ether_addr() to check multicast Ether address
wifi: ath12k: Remove unused declarations
wifi: ath12k: add check max message length while scanning with extraie
...
====================
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/bluetooth/bluetooth-next
Luiz Augusto von Dentz says:
====================
bluetooth-next pull request for net-next:
- Introduce HCI_QUIRK_BROKEN_LE_CODED
- Add support for PA/BIG sync
- Add support for NXP IW624 chipset
- Add support for Qualcomm WCN7850
* tag 'for-net-next-2023-08-24' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next:
Bluetooth: btusb: Do not call kfree_skb() under spin_lock_irqsave()
Bluetooth: btusb: Fix quirks table naming
Bluetooth: HCI: Introduce HCI_QUIRK_BROKEN_LE_CODED
Bluetooth: btintel: Send new command for PPAG
Bluetooth: ISO: Add support for periodic adv reports processing
Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
Bluetooth: hci_core: Fix missing instances using HCI_MAX_AD_LENGTH
Bluetooth: ISO: Use defer setup to separate PA sync and BIG sync
Bluetooth: qca: add support for WCN7850
Bluetooth: qca: use switch case for soc type behavior
dt-bindings: net: bluetooth: qualcomm: document WCN7850 chipset
Bluetooth: hci_conn: Fix sending BT_HCI_CMD_LE_CREATE_CONN_CANCEL
Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync
Bluetooth: btnxpuart: Improve inband Independent Reset handling
Bluetooth: btnxpuart: Add support for IW624 chipset
Bluetooth: btnxpuart: Remove check for CTS low after FW download
====================
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/clk/linux
Pull clk fixes from Stephen Boyd:
"One clk driver fix and two clk framework fixes:
- Fix an OOB access when devm_get_clk_from_child() is used and
devm_clk_release() casts the void pointer to the wrong type
- Move clk_rate_exclusive_{get,put}() within the correct ifdefs in
clk.h so that the stubs are used when CONFIG_COMMON_CLK=n
- Register the proper clk provider function depending on the value of
#clock-cells in the TI keystone driver"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: Fix slab-out-of-bounds error in devm_clk_release()
clk: Fix undefined reference to `clk_rate_exclusive_{get,put}'
clk: keystone: syscon-clk: Fix audio refclk
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Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct dm_verity_loadpin_trusted_root_digest.
Additionally, since the element count member must be set before accessing
the annotated flexible array member, move its initialization earlier.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Alasdair Kergon <[email protected]>
Cc: Mike Snitzer <[email protected]>
Cc: [email protected]
Cc: Paul Moore <[email protected]>
Cc: James Morris <[email protected]>
Cc: "Serge E. Hallyn" <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Kees Cook <[email protected]>
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All users of cleanup_symbol_name() do not use the return value.
So let us change the return value of cleanup_symbol_name() to
'void' to reflect its usage pattern.
Suggested-by: Nick Desaulniers <[email protected]>
Signed-off-by: Yonghong Song <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
Reviewed-by: Song Liu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Kees Cook <[email protected]>
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The gcc compiler translates on some architectures the 64-bit
__builtin_clzll() function to a call to the libgcc function __clzdi2(),
which should take a 64-bit parameter on 32- and 64-bit platforms.
But in the current kernel code, the built-in __clzdi2() function is
defined to operate (wrongly) on 32-bit parameters if BITS_PER_LONG ==
32, thus the return values on 32-bit kernels are in the range from
[0..31] instead of the expected [0..63] range.
This patch fixes the in-kernel functions __clzdi2() and __ctzdi2() to
take a 64-bit parameter on 32-bit kernels as well, thus it makes the
functions identical for 32- and 64-bit kernels.
This bug went unnoticed since kernel 3.11 for over 10 years, and here
are some possible reasons for that:
a) Some architectures have assembly instructions to count the bits and
which are used instead of calling __clzdi2(), e.g. on x86 the bsr
instruction and on ppc cntlz is used. On such architectures the
wrong __clzdi2() implementation isn't used and as such the bug has
no effect and won't be noticed.
b) Some architectures link to libgcc.a, and the in-kernel weak
functions get replaced by the correct 64-bit variants from libgcc.a.
c) __builtin_clzll() and __clzdi2() doesn't seem to be used in many
places in the kernel, and most likely only in uncritical functions,
e.g. when printing hex values via seq_put_hex_ll(). The wrong return
value will still print the correct number, but just in a wrong
formatting (e.g. with too many leading zeroes).
d) 32-bit kernels aren't used that much any longer, so they are less
tested.
A trivial testcase to verify if the currently running 32-bit kernel is
affected by the bug is to look at the output of /proc/self/maps:
Here the kernel uses a correct implementation of __clzdi2():
root@debian:~# cat /proc/self/maps
00010000-00019000 r-xp 00000000 08:05 787324 /usr/bin/cat
00019000-0001a000 rwxp 00009000 08:05 787324 /usr/bin/cat
0001a000-0003b000 rwxp 00000000 00:00 0 [heap]
f7551000-f770d000 r-xp 00000000 08:05 794765 /usr/lib/hppa-linux-gnu/libc.so.6
...
and this kernel uses the broken implementation of __clzdi2():
root@debian:~# cat /proc/self/maps
0000000010000-0000000019000 r-xp 00000000 000000008:000000005 787324 /usr/bin/cat
0000000019000-000000001a000 rwxp 000000009000 000000008:000000005 787324 /usr/bin/cat
000000001a000-000000003b000 rwxp 00000000 00:00 0 [heap]
00000000f73d1000-00000000f758d000 r-xp 00000000 000000008:000000005 794765 /usr/lib/hppa-linux-gnu/libc.so.6
...
Signed-off-by: Helge Deller <[email protected]>
Fixes: 4df87bb7b6a22 ("lib: add weak clz/ctz functions")
Cc: Chanho Min <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: [email protected] # v3.11+
Signed-off-by: Linus Torvalds <[email protected]>
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Merge devfreq changes and power management tools changes for 6.6-rc1:
- Fix memory leak in devfreq_dev_release() (Boris Brezillon).
- Rewrite devfreq_monitor_start() kerneldoc comment (Manivannan
Sadhasivam).
- Explicitly include correct DT includes in devfreq (Rob Herring).
- Add turbo-boost support to cpupower (Wyes Karny).
- Add support for amd_pstate mode change to cpupower (Wyes Karny).
- Fix 'cpupower idle_set' command to accept only numeric values of
arguments (Likhitha Korrapati).
* pm-devfreq:
PM / devfreq: Fix leak in devfreq_dev_release()
PM / devfreq: Reword the kernel-doc comment for devfreq_monitor_start() API
PM / devfreq: Explicitly include correct DT includes
* pm-tools:
cpupower: Fix cpuidle_set to accept only numeric values for idle-set operation.
cpupower: Add turbo-boost support in cpupower
cpupower: Add support for amd_pstate mode change
cpupower: Add EPP value change support
cpupower: Add is_valid_path API
cpupower: Recognise amd-pstate active mode driver
cpupower: Bump soname version
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Merge system-wide power management changes and power capping updates
for 6.6-rc1:
- Add device PM helpers to allow a device to remain powered-on during
system-wide transitions (Ulf Hansson).
- Rework hibernation memory snapshotting to avoid storing pages filled
with zeros in hibernation image files (Brian Geffon).
- Add check to make sure that CPU latency QoS constraints do not use
negative values (Clive Lin).
- Optimize rp->domains memory allocation in the Intel RAPL power
capping driver (xiongxin).
- Remove recursion while parsing zones in the arm_scmi power capping
driver (Cristian Marussi).
* pm-sleep:
PM: sleep: Add helpers to allow a device to remain powered-on
PM: hibernate: don't store zero pages in the image file
* pm-qos:
PM: QoS: Add check to make sure CPU latency is non-negative
* powercap:
powercap: intel_rapl: Optimize rp->domains memory allocation
powercap: arm_scmi: Remove recursion while parsing zones
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Merge CPU power management updates for 6.6-rc1:
- Rework the menu and teo cpuidle governors to avoid calling
tick_nohz_get_sleep_length(), which is likely to become quite
expensive going forward, too often and improve making decisions
regarding whether or not to stop the scheduler tick in the teo
governor (Rafael Wysocki).
- Improve the performance of cpufreq_stats_create_table() in some
cases (Liao Chang).
- Fix two issues in the amd-pstate-ut cpufreq driver (Swapnil Sapkal).
- Use clamp() helper macro to improve the code readability in
cpufreq_verify_within_limits() (Liao Chang).
- Set stale CPU frequency to minimum in intel_pstate (Doug Smythies).
* pm-cpuidle:
cpuidle: teo: Avoid unnecessary variable assignments
cpuidle: menu: Skip tick_nohz_get_sleep_length() call in some cases
cpuidle: teo: Gather statistics regarding whether or not to stop the tick
cpuidle: teo: Skip tick_nohz_get_sleep_length() call in some cases
cpuidle: teo: Do not call tick_nohz_get_sleep_length() upfront
cpuidle: teo: Drop utilized from struct teo_cpu
cpuidle: teo: Avoid stopping the tick unnecessarily when bailing out
cpuidle: teo: Update idle duration estimate when choosing shallower state
* pm-cpufreq:
cpufreq: amd-pstate-ut: Fix kernel panic when loading the driver
cpufreq: amd-pstate-ut: Remove module parameter access
cpufreq: Use clamp() helper macro to improve the code readability
cpufreq: intel_pstate: set stale CPU frequency to minimum
cpufreq: stats: Improve the performance of cpufreq_stats_create_table()
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Merge a PNP change for 6.6-rc1:
- Fix string truncation warning in pnpacpi_add_device() (Sunil V L).
* pnp:
PNP: ACPI: Fix string truncation warning
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Merge ACPI power management updates for 6.6-rc1:
- Fix and clean up suspend-to-idle interface for AMD systems (Mario
Limonciello, Andy Shevchenko).
* acpi-pm:
ACPI: x86: s2idle: Add a function to get LPS0 constraint for a device
ACPI: x86: s2idle: Add for_each_lpi_constraint() helper
ACPI: x86: s2idle: Add more debugging for AMD constraints parsing
ACPI: x86: s2idle: Fix a logic error parsing AMD constraints table
ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
ACPI: x86: s2idle: Post-increment variables when getting constraints
ACPI: Adjust #ifdef for *_lps0_dev use
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Merge ACPI device enumeration changes, ACPI TAD and extlog drivers
updates, and miscellaneous ACPI-related changes for 6.6-rc1:
- Defer enumeration of devices with _DEP pointing to IVSC (Wentong Wu).
- Install SystemCMOS address space handler for ACPI000E (TAD) to meet
platform firmware expectations on some platforms (Zhang Rui).
- Fix finding the generic error data in the ACPi extlog driver for
compatibility with old and new firmware interface versions (Xiaochun
Lee).
- Remove assorted unused declarations of functions (Yue Haibing).
- Move AMBA bus scan handling into arm64 specific directory (Sudeep
Holla).
* acpi-scan:
ACPI: scan: Defer enumeration of devices with a _DEP pointing to IVSC device
* acpi-tad:
ACPI: TAD: Install SystemCMOS address space handler for ACPI000E
* acpi-extlog:
ACPI: extlog: Fix finding the generic error data for v3 structure
* acpi-misc:
ACPI: Remove assorted unused declarations of functions
ACPI: Remove unused extern declaration acpi_paddr_to_node()
ACPI: Move AMBA bus scan handling into arm64 specific directory
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"18 hotfixes. 13 are cc:stable and the remainder pertain to post-6.4
issues or aren't considered suitable for a -stable backport"
* tag 'mm-hotfixes-stable-2023-08-25-11-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
shmem: fix smaps BUG sleeping while atomic
selftests: cachestat: catch failing fsync test on tmpfs
selftests: cachestat: test for cachestat availability
maple_tree: disable mas_wr_append() when other readers are possible
madvise:madvise_free_pte_range(): don't use mapcount() against large folio for sharing check
madvise:madvise_free_huge_pmd(): don't use mapcount() against large folio for sharing check
madvise:madvise_cold_or_pageout_pte_range(): don't use mapcount() against large folio for sharing check
mm: multi-gen LRU: don't spin during memcg release
mm: memory-failure: fix unexpected return value in soft_offline_page()
radix tree: remove unused variable
mm: add a call to flush_cache_vmap() in vmap_pfn()
selftests/mm: FOLL_LONGTERM need to be updated to 0x100
nilfs2: fix general protection fault in nilfs_lookup_dirty_data_buffers()
mm/gup: handle cont-PTE hugetlb pages correctly in gup_must_unshare() via GUP-fast
selftests: cgroup: fix test_kmem_basic less than error
mm: enable page walking API to lock vmas during the walk
smaps: use vm_normal_page_pmd() instead of follow_trans_huge_pmd()
mm/gup: reintroduce FOLL_NUMA as FOLL_HONOR_NUMA_FAULT
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Merge ACPI thermal driver changes for 6.6-rc1:
- Drop non-functional nocrt parameter from ACPI thermal (Mario
Limonciello).
- Clean up the ACPI thermal driver, rework the handling of firmware
notifications in it and make it provide a table of generic trip point
structures to the core during initialization (Rafael Wysocki).
* acpi-thermal:
ACPI: thermal: Eliminate code duplication from acpi_thermal_notify()
ACPI: thermal: Drop unnecessary thermal zone callbacks
ACPI: thermal: Rework thermal_get_trend()
ACPI: thermal: Use trip point table to register thermal zones
thermal: core: Rework and rename __for_each_thermal_trip()
ACPI: thermal: Introduce struct acpi_thermal_trip
ACPI: thermal: Carry out trip point updates under zone lock
ACPI: thermal: Clean up acpi_thermal_register_thermal_zone()
thermal: core: Add priv pointer to struct thermal_trip
thermal: core: Introduce thermal_zone_device_exec()
thermal: core: Do not handle trip points with invalid temperature
ACPI: thermal: Drop redundant local variable from acpi_thermal_resume()
ACPI: thermal: Do not attach private data to ACPI handles
ACPI: thermal: Drop enabled flag from struct acpi_thermal_active
ACPI: thermal: Drop nocrt parameter
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Merge ACPI processor driver changes for 6.6-rc1:
- Support obtaining physical CPU ID from MADT on LoongArch (Bibo Mao).
- Convert ACPI CPU initialization to using _OSC instead of _PDC that
has been depreceted since 2018 and dropped from the specification in
ACPI 6.5 (Michal Wilczynski, Rafael Wysocki).
* acpi-processor:
ACPI: processor: LoongArch: Get physical ID from MADT
ACPI: processor: Refine messages in acpi_early_processor_control_setup()
ACPI: processor: Remove acpi_hwp_native_thermal_lvt_osc()
ACPI: processor: Use _OSC to convey OSPM processor support information
ACPI: processor: Introduce acpi_processor_osc()
ACPI: processor: Set CAP_SMP_T_SWCOORD in arch_acpi_set_proc_cap_bits()
ACPI: processor: Clear C_C2C3_FFH and C_C1_FFH in arch_acpi_set_proc_cap_bits()
ACPI: processor: Rename ACPI_PDC symbols
ACPI: processor: Refactor arch_acpi_set_pdc_bits()
ACPI: processor: Move processor_physically_present() to acpi_processor.c
ACPI: processor: Move MWAIT quirk out of acpi_processor.c
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Merge changes related to the ACPI bus type and ACPI backlight driver
changes for 6.6-rc1:
- Introduce new wrappers for ACPICA notify handler install/remove and
convert multiple drivers to using their own Notify() handlers instead
of the ACPI bus type .notify() slated for removal (Michal Wilczynski).
- Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2 (Hans
de Goede).
- Put ACPI video and its child devices explicitly into D0 on boot to
avoid platform firmware confusion (Kai-Heng Feng).
- Add backlight=native DMI quirk for Lenovo Ideapad Z470 (Jiri Slaby).
* acpi-bus:
ACPI: thermal: Install Notify() handler directly
ACPI: NFIT: Remove unnecessary .remove callback
ACPI: NFIT: Install Notify() handler directly
ACPI: HED: Install Notify() handler directly
ACPI: battery: Install Notify() handler directly
ACPI: video: Install Notify() handler directly
ACPI: AC: Install Notify() handler directly
ACPI: bus: Set driver_data to NULL every time .add() fails
ACPI: bus: Introduce wrappers for ACPICA notify handler install/remove
* acpi-video:
ACPI: video: Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2
ACPI: video: Put ACPI video and its child devices into D0 on boot
ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470
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Merge ACPICA material for 6.6-rc1.
This includes some fixes, cleanups and new material, mostly related to
parsing tables.
Specifics:
- Suppress a GCC 12 dangling-pointer warning (Philip Prindeville).
- Reformat the ACPI_STATE_COMMON macro and its users (George Guo).
- Replace the ternary operator with ACPI_MIN() (Jiangshan Yi).
- Add support for _DSC as per ACPI 6.5 (Saket Dumbre).
- Remove a duplicate macro from zephyr header (Najumon B.A).
- Add data structures for GED and _EVT tracking (Jose Marinho).
- Fix misspelled CDAT DSMAS define (Dave Jiang).
- Simplify an error message in acpi_ds_result_push() (Christophe
Jaillet).
- Add a struct size macro related to SRAT (Dave Jiang).
- Add AML_NO_OPERAND_RESOLVE flag to Timer (Abhishek Mainkar).
- Add support for RISC-V external interrupt controllers in MADT (Sunil
V L).
- Add RHCT flags, CMO and MMU nodes (Sunil V L).
- Change ACPICA version to 20230628 (Bob Moore).
* acpica:
ACPICA: Update version to 20230628
ACPICA: RHCT: Add flags, CMO and MMU nodes
ACPICA: MADT: Add RISC-V external interrupt controllers
ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer
ACPICA: Add a define for size of struct acpi_srat_generic_affinity device_handle
ACPICA: Slightly simplify an error message in acpi_ds_result_push()
ACPICA: Fix misspelled CDAT DSMAS define
ACPICA: Add interrupt command to acpiexec
ACPICA: Detect GED device and keep track of _EVT
ACPICA: fix for conflict macro definition on zephyr interface
ACPICA: Add support for _DSC as per ACPI 6.5
ACPICA: exserial.c: replace ternary operator with ACPI_MIN()
ACPICA: Modify ACPI_STATE_COMMON
ACPICA: Fix GCC 12 dangling-pointer warning
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Kernel test robot reported a kallsyms_test failure when clang lto is
enabled (thin or full) and CONFIG_KALLSYMS_SELFTEST is also enabled.
I can reproduce in my local environment with the following error message
with thin lto:
[ 1.877897] kallsyms_selftest: Test for 1750th symbol failed: (tsc_cs_mark_unstable) addr=ffffffff81038090
[ 1.877901] kallsyms_selftest: abort
It appears that commit 8cc32a9bbf29 ("kallsyms: strip LTO-only suffixes
from promoted global functions") caused the failure. Commit 8cc32a9bbf29
changed cleanup_symbol_name() based on ".llvm." instead of '.' where
".llvm." is appended to a before-lto-optimization local symbol name.
We need to propagate such knowledge in kallsyms_selftest.c as well.
Further more, compare_symbol_name() in kallsyms.c needs change as well.
In scripts/kallsyms.c, kallsyms_names and kallsyms_seqs_of_names are used
to record symbol names themselves and index to symbol names respectively.
For example:
kallsyms_names:
...
__amd_smn_rw._entry <== seq 1000
__amd_smn_rw._entry.5 <== seq 1001
__amd_smn_rw.llvm.<hash> <== seq 1002
...
kallsyms_seqs_of_names are sorted based on cleanup_symbol_name() through, so
the order in kallsyms_seqs_of_names actually has
index 1000: seq 1002 <== __amd_smn_rw.llvm.<hash> (actual symbol comparison using '__amd_smn_rw')
index 1001: seq 1000 <== __amd_smn_rw._entry
index 1002: seq 1001 <== __amd_smn_rw._entry.5
Let us say at a particular point, at index 1000, symbol '__amd_smn_rw.llvm.<hash>'
is comparing to '__amd_smn_rw._entry' where '__amd_smn_rw._entry' is the one to
search e.g., with function kallsyms_on_each_match_symbol(). The current implementation
will find out '__amd_smn_rw._entry' is less than '__amd_smn_rw.llvm.<hash>' and
then continue to search e.g., index 999 and never found a match although the actual
index 1001 is a match.
To fix this issue, let us do cleanup_symbol_name() first and then do comparison.
In the above case, comparing '__amd_smn_rw' vs '__amd_smn_rw._entry' and
'__amd_smn_rw._entry' being greater than '__amd_smn_rw', the next comparison will
be > index 1000 and eventually index 1001 will be hit an a match is found.
For any symbols not having '.llvm.' substr, there is no functionality change
for compare_symbol_name().
Fixes: 8cc32a9bbf29 ("kallsyms: strip LTO-only suffixes from promoted global functions")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-lkp/[email protected]
Signed-off-by: Yonghong Song <[email protected]>
Reviewed-by: Song Liu <[email protected]>
Reviewed-by: Zhen Lei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
"This is obviously not ideal, particularly for something this late in
the cycle.
Unfortunately we found some uABI issues in the vector support while
reviewing the GDB port, which has triggered a revert -- probably a
good sign we should have reviewed GDB before merging this, I guess I
just dropped the ball because I was so worried about the context
extension and libc suff I forgot. Hence the late revert.
There's some risk here as we're still exposing the vector context for
signal handlers, but changing that would have meant reverting all of
the vector support. The issues we've found so far have been fixed
already and they weren't absolute showstoppers, so we're essentially
just playing it safe by holding ptrace support for another release (or
until we get through a proper userspace code review).
Summary:
- The vector ucontext extension has been extended with vlenb
- The vector registers ELF core dump note type has been changed to
avoid aliasing with the CSR type used in embedded systems
- Support for accessing vector registers via ptrace() has been
reverted
- Another build fix for the ISA spec changes around Zifencei/Zicsr
that manifests on some systems built with binutils-2.37 and
gcc-11.2"
* tag 'riscv-for-linus-6.5-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Fix build errors using binutils2.37 toolchains
RISC-V: vector: export VLENB csr in __sc_riscv_v_state
RISC-V: Remove ptrace support for vectors
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Dave Marchevsky says:
====================
BPF Refcount followups 3: bpf_mem_free_rcu refcounted nodes
This series is the third of three (or more) followups to address issues
in the bpf_refcount shared ownership implementation discovered by Kumar.
This series addresses the use-after-free scenario described in [0]. The
first followup series ([1]) also attempted to address the same
use-after-free, but only got rid of the splat without addressing the
underlying issue. After this series the underyling issue is fixed and
bpf_refcount_acquire can be re-enabled.
The main fix here is migration of bpf_obj_drop to use
bpf_mem_free_rcu. To understand why this fixes the issue, let us consider
the example interleaving provided by Kumar in [0]:
CPU 0 CPU 1
n = bpf_obj_new
lock(lock1)
bpf_rbtree_add(rbtree1, n)
m = bpf_rbtree_acquire(n)
unlock(lock1)
kptr_xchg(map, m) // move to map
// at this point, refcount = 2
m = kptr_xchg(map, NULL)
lock(lock2)
lock(lock1) bpf_rbtree_add(rbtree2, m)
p = bpf_rbtree_first(rbtree1) if (!RB_EMPTY_NODE) bpf_obj_drop_impl(m) // A
bpf_rbtree_remove(rbtree1, p)
unlock(lock1)
bpf_obj_drop(p) // B
bpf_refcount_acquire(m) // use-after-free
...
Before this series, bpf_obj_drop returns memory to the allocator using
bpf_mem_free. At this point (B in the example) there might be some
non-owning references to that memory which the verifier believes are valid,
but where the underlying memory was reused for some other allocation.
Commit 7793fc3babe9 ("bpf: Make bpf_refcount_acquire fallible for
non-owning refs") attempted to fix this by doing refcount_inc_non_zero
on refcount_acquire in instead of refcount_inc under the assumption that
preventing erroneous incr-on-0 would be sufficient. This isn't true,
though: refcount_inc_non_zero must *check* if the refcount is zero, and
the memory it's checking could have been reused, so the check may look
at and incr random reused bytes.
If we wait to reuse this memory until all non-owning refs that could
point to it are gone, there is no possibility of this scenario
happening. Migrating bpf_obj_drop to use bpf_mem_free_rcu for refcounted
nodes accomplishes this.
For such nodes, the validity of their underlying memory is now tied to
RCU critical section. This matches MEM_RCU trustedness
expectations, so the series takes the opportunity to more explicitly
mark this trustedness state.
The functional effects of trustedness changes here are rather small.
This is largely due to local kptrs having separate verifier handling -
with implicit trustedness assumptions - than arbitrary kptrs.
Regardless, let's take the opportunity to move towards a world where
trustedness is more explicitly handled.
Changelog:
v1 -> v2: https://lore.kernel.org/bpf/[email protected]/
Patch 1 ("bpf: Ensure kptr_struct_meta is non-NULL for collection insert and refcount_acquire")
* Spent some time experimenting with a better approach as per convo w/
Yonghong on v1's patch. It started getting too complex, so left unchanged
for now. Yonghong was fine with this approach being shipped.
Patch 2 ("bpf: Consider non-owning refs trusted")
* Add Yonghong ack
Patch 3 ("bpf: Use bpf_mem_free_rcu when bpf_obj_dropping refcounted nodes")
* Add Yonghong ack
Patch 4 ("bpf: Reenable bpf_refcount_acquire")
* Add Yonghong ack
Patch 5 ("bpf: Consider non-owning refs to refcounted nodes RCU protected")
* Undo a nonfunctional whitespace change that shouldn't have been included
(Yonghong)
* Better logging message when complaining about rcu_read_{lock,unlock} in
rbtree cb (Alexei)
* Don't invalidate_non_owning_refs when processing bpf_rcu_read_unlock
(Yonghong, Alexei)
Patch 6 ("[RFC] bpf: Allow bpf_spin_{lock,unlock} in sleepable prog's RCU CS")
* preempt_{disable,enable} in __bpf_spin_{lock,unlock} (Alexei)
* Due to this we can consider spin_lock CS an RCU-sched read-side CS (per
RCU/Design/Requirements/Requirements.rst). Modify in_rcu_cs accordingly.
* no need to check for !in_rcu_cs before allowing bpf_spin_{lock,unlock}
(Alexei)
* RFC tag removed and renamed to "bpf: Allow bpf_spin_{lock,unlock} in
sleepable progs"
Patch 7 ("selftests/bpf: Add tests for rbtree API interaction in sleepable progs")
* Remove "no explicit bpf_rcu_read_lock" failure test, add similar success
test (Alexei)
Summary of patch contents, with sub-bullets being leading questions and
comments I think are worth reviewer attention:
* Patches 1 and 2 are moreso documententation - and
enforcement, in patch 1's case - of existing semantics / expectations
* Patch 3 changes bpf_obj_drop behavior for refcounted nodes such that
their underlying memory is not reused until RCU grace period elapses
* Perhaps it makes sense to move to mem_free_rcu for _all_
non-owning refs in the future, not just refcounted. This might
allow custom non-owning ref lifetime + invalidation logic to be
entirely subsumed by MEM_RCU handling. IMO this needs a bit more
thought and should be tackled outside of a fix series, so it's not
attempted here.
* Patch 4 re-enables bpf_refcount_acquire as changes in patch 3 fix
the remaining use-after-free
* One might expect this patch to be last in the series, or last
before selftest changes. Patches 5 and 6 don't change
verification or runtime behavior for existing BPF progs, though.
* Patch 5 brings the verifier's understanding of refcounted node
trustedness in line with Patch 4's changes
* Patch 6 allows some bpf_spin_{lock, unlock} calls in sleepable
progs. Marked RFC for a few reasons:
* bpf_spin_{lock,unlock} haven't been usable in sleepable progs
since before the introduction of bpf linked list and rbtree. As
such this feels more like a new feature that may not belong in
this fixes series.
* Patch 7 adds tests
[0]: https://lore.kernel.org/bpf/atfviesiidev4hu53hzravmtlau3wdodm2vqs7rd7tnwft34e3@xktodqeqevir/
[1]: https://lore.kernel.org/bpf/[email protected]/
====================
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
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Confirm that the following sleepable prog states fail verification:
* bpf_rcu_read_unlock before bpf_spin_unlock
* RCU CS will last at least as long as spin_lock CS
Also confirm that correct usage passes verification, specifically:
* Explicit use of bpf_rcu_read_{lock, unlock} in sleepable test prog
* Implied RCU CS due to spin_lock CS
None of the selftest progs actually attach to bpf_testmod's
bpf_testmod_test_read.
Signed-off-by: Dave Marchevsky <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
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Commit 9e7a4d9831e8 ("bpf: Allow LSM programs to use bpf spin locks")
disabled bpf_spin_lock usage in sleepable progs, stating:
Sleepable LSM programs can be preempted which means that allowng spin
locks will need more work (disabling preemption and the verifier
ensuring that no sleepable helpers are called when a spin lock is
held).
This patch disables preemption before grabbing bpf_spin_lock. The second
requirement above "no sleepable helpers are called when a spin lock is
held" is implicitly enforced by current verifier logic due to helper
calls in spin_lock CS being disabled except for a few exceptions, none
of which sleep.
Due to above preemption changes, bpf_spin_lock CS can also be considered
a RCU CS, so verifier's in_rcu_cs check is modified to account for this.
Signed-off-by: Dave Marchevsky <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
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An earlier patch in the series ensures that the underlying memory of
nodes with bpf_refcount - which can have multiple owners - is not reused
until RCU grace period has elapsed. This prevents
use-after-free with non-owning references that may point to
recently-freed memory. While RCU read lock is held, it's safe to
dereference such a non-owning ref, as by definition RCU GP couldn't have
elapsed and therefore underlying memory couldn't have been reused.
From the perspective of verifier "trustedness" non-owning refs to
refcounted nodes are now trusted only in RCU CS and therefore should no
longer pass is_trusted_reg, but rather is_rcu_reg. Let's mark them
MEM_RCU in order to reflect this new state.
Signed-off-by: Dave Marchevsky <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
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Now that all reported issues are fixed, bpf_refcount_acquire can be
turned back on. Also reenable all bpf_refcount-related tests which were
disabled.
This a revert of:
* commit f3514a5d6740 ("selftests/bpf: Disable newly-added 'owner' field test until refcount re-enabled")
* commit 7deca5eae833 ("bpf: Disable bpf_refcount_acquire kfunc calls until race conditions are fixed")
Signed-off-by: Dave Marchevsky <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
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This is the final fix for the use-after-free scenario described in
commit 7793fc3babe9 ("bpf: Make bpf_refcount_acquire fallible for
non-owning refs"). That commit, by virtue of changing
bpf_refcount_acquire's refcount_inc to a refcount_inc_not_zero, fixed
the "refcount incr on 0" splat. The not_zero check in
refcount_inc_not_zero, though, still occurs on memory that could have
been free'd and reused, so the commit didn't properly fix the root
cause.
This patch actually fixes the issue by free'ing using the recently-added
bpf_mem_free_rcu, which ensures that the memory is not reused until
RCU grace period has elapsed. If that has happened then
there are no non-owning references alive that point to the
recently-free'd memory, so it can be safely reused.
Signed-off-by: Dave Marchevsky <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
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Recent discussions around default kptr "trustedness" led to changes such
as commit 6fcd486b3a0a ("bpf: Refactor RCU enforcement in the
verifier."). One of the conclusions of those discussions, as expressed
in code and comments in that patch, is that we'd like to move away from
'raw' PTR_TO_BTF_ID without some type flag or other register state
indicating trustedness. Although PTR_TRUSTED and PTR_UNTRUSTED flags mark
this state explicitly, the verifier currently considers trustedness
implied by other register state. For example, owning refs to graph
collection nodes must have a nonzero ref_obj_id, so they pass the
is_trusted_reg check despite having no explicit PTR_{UN}TRUSTED flag.
This patch makes trustedness of non-owning refs to graph collection
nodes explicit as well.
By definition, non-owning refs are currently trusted. Although the ref
has no control over pointee lifetime, due to non-owning ref clobbering
rules (see invalidate_non_owning_refs) dereferencing a non-owning ref is
safe in the critical section controlled by bpf_spin_lock associated with
its owning collection.
Note that the previous statement does not hold true for nodes with shared
ownership due to the use-after-free issue that this series is
addressing. True shared ownership was disabled by commit 7deca5eae833
("bpf: Disable bpf_refcount_acquire kfunc calls until race conditions are fixed"),
though, so the statement holds for now. Further patches in the series will change
the trustedness state of non-owning refs before re-enabling
bpf_refcount_acquire.
Let's add NON_OWN_REF type flag to BPF_REG_TRUSTED_MODIFIERS such that a
non-owning ref reg state would pass is_trusted_reg check. Somewhat
surprisingly, this doesn't result in any change to user-visible
functionality elsewhere in the verifier: graph collection nodes are all
marked MEM_ALLOC, which tends to be handled in separate codepaths from
"raw" PTR_TO_BTF_ID. Regardless, let's be explicit here and document the
current state of things before changing it elsewhere in the series.
Signed-off-by: Dave Marchevsky <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
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refcount_acquire
It's straightforward to prove that kptr_struct_meta must be non-NULL for
any valid call to these kfuncs:
* btf_parse_struct_metas in btf.c creates a btf_struct_meta for any
struct in user BTF with a special field (e.g. bpf_refcount,
{rb,list}_node). These are stored in that BTF's struct_meta_tab.
* __process_kf_arg_ptr_to_graph_node in verifier.c ensures that nodes
have {rb,list}_node field and that it's at the correct offset.
Similarly, check_kfunc_args ensures bpf_refcount field existence for
node param to bpf_refcount_acquire.
* So a btf_struct_meta must have been created for the struct type of
node param to these kfuncs
* That BTF and its struct_meta_tab are guaranteed to still be around.
Any arbitrary {rb,list} node the BPF program interacts with either:
came from bpf_obj_new or a collection removal kfunc in the same
program, in which case the BTF is associated with the program and
still around; or came from bpf_kptr_xchg, in which case the BTF was
associated with the map and is still around
Instead of silently continuing with NULL struct_meta, which caused
confusing bugs such as those addressed by commit 2140a6e3422d ("bpf: Set
kptr_struct_meta for node param to list and rbtree insert funcs"), let's
error out. Then, at runtime, we can confidently say that the
implementations of these kfuncs were given a non-NULL kptr_struct_meta,
meaning that special-field-specific functionality like
bpf_obj_free_fields and the bpf_obj_drop change introduced later in this
series are guaranteed to execute.
This patch doesn't change functionality, just makes it easier to reason
about existing functionality.
Signed-off-by: Dave Marchevsky <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix an irq mapping leak in gpio-sim
- associate the GPIO device's software node with the irq domain in
gpio-sim
* tag 'gpio-fixes-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: sim: pass the GPIO device's software node to irq domain
gpio: sim: dispose of irq mappings before destroying the irq_sim domain
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Here are some Renesas and AMD driver fixes, the AMD fix affects
important laptops in the wild so this one is pretty important. It
seems a bit tough to get this right.
- Fix DT parsing and related locking in the Renesas driver.
- Fix wakeup IRQs in the AMD driver once again. Really tricky this
one"
* tag 'pinctrl-v6.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: amd: Mask wake bits on probe again
pinctrl: renesas: rza2: Add lock around pinctrl_generic{{add,remove}_group,{add,remove}_function}
pinctrl: renesas: rzv2m: Fix NULL pointer dereference in rzv2m_dt_subnode_to_map()
pinctrl: renesas: rzg2l: Fix NULL pointer dereference in rzg2l_dt_subnode_to_map()
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Hopefully the last bits for 6.5. It's slightly higher LOCs than
wished, but it doesn't look scary.
The biggest change is MAINTAINERS update for TI; it's good to have the
update before the final release, so that people can contact to the
right persons for bug reports (which shouldn't happen of course!)
The rest are all device-specific fixes and quirks, most for various
ASoC platforms"
* tag 'sound-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: amd: yc: Fix a non-functional mic on Lenovo 82SJ
ALSA: ymfpci: Fix the missing snd_card_free() call at probe error
ASoC: cs35l41: Correct amp_gain_tlv values
ASoC: amd: yc: Add VivoBook Pro 15 to quirks list for acp6x
ASoC: tas2781: fixed register access error when switching to other chips
ASoC: cs35l56: Add an ACPI match table
ASoC: cs35l56: Read firmware uuid from a device property instead of _SUB
ASoC: SOF: ipc4-pcm: fix possible null pointer deference
MAINTAINERS: Add entries for TEXAS INSTRUMENTS ASoC DRIVERS
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The initial aim is to silence the following objtool warning:
arch/loongarch/kernel/process.o: warning: objtool: arch_cpu_idle_dead() falls through to next function start_thread()
According to tools/objtool/Documentation/objtool.txt, this is because
the last instruction of arch_cpu_idle_dead() is a call to a noreturn
function play_dead(). In order to silence the warning, one simple way
is to add the noreturn function play_dead() to objtool's hard-coded
global_noreturns array, that is to say, just put "NORETURN(play_dead)"
into tools/objtool/noreturns.h, it works well.
But I noticed that play_dead() is only defined once and only called by
arch_cpu_idle_dead(), so put the body of play_dead() into the caller
arch_cpu_idle_dead(), then remove the noreturn function play_dead() is
an alternative way which can reduce the overhead of the function call
at the same time.
Signed-off-by: Tiezhu Yang <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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Add identifier names to arguments of die() declaration in ptrace.h
to fix the following checkpatch warnings:
WARNING: function definition argument 'const char *' should also have an identifier name
WARNING: function definition argument 'struct pt_regs *' should also have an identifier name
Signed-off-by: Tiezhu Yang <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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After the call to oops_exit(), it should not panic or execute
the crash kernel if the oops is to be suppressed.
Suggested-by: Maciej W. Rozycki <[email protected]>
Signed-off-by: Tiezhu Yang <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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If notify_die() returns NOTIFY_STOP, honor the return value from the
handler chain invocation in die() and return without killing the task
as, through a debugger, the fault may have been fixed. It makes sense
even if ignoring the event will make the system unstable: by allowing
access through a debugger it has been compromised already anyway. It
makes our port consistent with x86, arm64, riscv and csky.
Commit 20c0d2d44029 ("[PATCH] i386: pass proper trap numbers to die
chain handlers") may be the earliest of similar changes.
Link: https://lore.kernel.org/r/[email protected]/
Signed-off-by: Tiezhu Yang <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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All *.S files under arch/loongarch/ have been converted to include
<linux/export.h> instead of <asm/export.h>.
Remove <asm/export.h>.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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Commit ddb5cdbafaaad ("kbuild: generate KSYMTAB entries by modpost")
deprecated <asm/export.h>, which is now a wrapper of <linux/export.h>.
Replace #include <asm/export.h> with #include <linux/export.h>.
After all the <asm/export.h> lines are converted, <asm/export.h> and
<asm-generic/export.h> will be removed.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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There is no EXPORT_SYMBOL() line there, hence #include <asm/export.h>
is unneeded.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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As explained by Nick in the original issue: the kernel usually does a
good job of providing library helpers that have similar semantics as
their ordinary userspace libc equivalents, but -ffreestanding disables
such libcall optimization and other related features in the compiler,
which can lead to unexpected things such as CONFIG_FORTIFY_SOURCE not
working (!).
However, due to the desire for better control over unaligned accesses
with respect to CONFIG_ARCH_STRICT_ALIGN, and also for avoiding the
GCC bug https://gcc.gnu.org/PR109465, we do want to still disable
optimizations for the memory libcalls (memcpy, memmove and memset for
now). Use finer-grained -fno-builtin-* toggles to achieve this without
losing source fortification and other libcall optimizations.
Closes: https://github.com/ClangBuiltLinux/linux/issues/1897
Reported-by: Nathan Chancellor <[email protected]>
Suggested-by: Nick Desaulniers <[email protected]>
Signed-off-by: WANG Xuerui <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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In drivers/Kconfig, drivers/firmware/Kconfig is sourced for all ports so
there is no need to source it in the port-specific Kconfig file. And
sourcing it here also caused the "Firmware Drivers" menu appeared two
times: one in the "Device Drivers" menu, another in the toplevel menu.
This is really puzzling so remove it.
Reviewed-by: Randy Dunlap <[email protected]>
Signed-off-by: Xi Ruoyao <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
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Pull drm fixes from Dave Airlie:
"A bit bigger than I'd care for, but it's mostly a single vmwgfx fix
and a fix for an i915 hotplug probing. Otherwise misc i915, bridge,
panfrost and dma-buf fixes.
core:
- add a HPD poll helper
i915:
- fix regression in i915 polling
- fix docs build warning
- fix DG2 idle power consumption
bridge:
- samsung-dsim: init fix
panfrost:
- fix speed binning issue
dma-buf:
- fix recursive lock in fence signal
vmwgfx:
- fix shader stage validation
- fix NULL ptr derefs in gem put"
* tag 'drm-fixes-2023-08-25' of git://anongit.freedesktop.org/drm/drm:
drm/i915: Fix HPD polling, reenabling the output poll work as needed
drm: Add an HPD poll helper to reschedule the poll work
drm/vmwgfx: Fix possible invalid drm gem put calls
drm/vmwgfx: Fix shader stage validation
dma-buf/sw_sync: Avoid recursive lock during fence signal
drm/i915: fix Sphinx indentation warning
drm/i915/dgfx: Enable d3cold at s2idle
drm/display/dp: Fix the DP DSC Receiver cap size
drm/panfrost: Skip speed binning on EOPNOTSUPP
drm: bridge: samsung-dsim: Fix init during host transfer
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Simpilfy probe() by replacing device_get_match_data() and id lookup for
retrieving match data by i2c_get_match_data().
Signed-off-by: Biju Das <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
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The supported channels for this driver are {0..3}. Fix the incorrect
channel in tmp51x_is_visible().
Reported-by: Guenter Roeck <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]/
Fixes: 59dfa75e5d82 ("hwmon: Add driver for Texas Instruments TMP512/513 sensor chips.")
Signed-off-by: Biju Das <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
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Some new big modular systems can be equipped with up to 24 fans.
Extend maximum number of fans accordingly.
Signed-off-by: Vadim Pasternak <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
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Instead of if conditions with line splits, use the usual error handling
pattern with a separate variable to improve readability. Handle error
print with a label instead of trying to chain everything into a single
if condition.
No functional changes intended.
Signed-off-by: Ilpo Järvinen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
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Instead of if conditions with line splits, use the usual error handling
pattern with a separate variable to improve readability.
No functional changes intended.
Signed-off-by: Ilpo Järvinen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
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Instead of if conditions with line splits, use the usual error handling
pattern with a separate variable to improve readability.
No functional changes intended.
Signed-off-by: Ilpo Järvinen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
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The polarity of the card detection gpio is handled by the "cd-inverted"
property in the device tree. Move this inversion logic to gpiolib to avoid
reading the gpio raw value.
Signed-off-by: Balamanikandan Gunasundar <[email protected]>
Suggested-by: Linus Walleij <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>
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Move the contents of linux/atmel-mci.h into
drivers/mmc/host/atmel-mci.c as it is only used in one file
Signed-off-by: Balamanikandan Gunasundar <[email protected]>
Reviewed-by: Ludovic Desroches <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>
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Replace the legacy GPIO APIs with gpio descriptor consumer interface.
To maintain backward compatibility, we rely on the "cd-inverted"
property to manage the invertion flag instead of GPIO property.
Signed-off-by: Balamanikandan Gunasundar <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>
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* for-next/selftests: (22 commits)
kselftest/arm64: Fix hwcaps selftest build
kselftest/arm64: add jscvt feature to hwcap test
kselftest/arm64: add pmull feature to hwcap test
kselftest/arm64: add AES feature check to hwcap test
kselftest/arm64: add SHA1 and related features to hwcap test
kselftest/arm64: build BTI tests in output directory
kselftest/arm64: fix a memleak in zt_regs_run()
kselftest/arm64: Size sycall-abi buffers for the actual maximum VL
kselftest/arm64: add lse and lse2 features to hwcap test
kselftest/arm64: add test item that support to capturing the SIGBUS signal
kselftest/arm64: add DEF_SIGHANDLER_FUNC() and DEF_INST_RAISE_SIG() helpers
kselftest/arm64: add crc32 feature to hwcap test
kselftest/arm64: add float-point feature to hwcap test
kselftest/arm64: Use the tools/include compiler.h rather than our own
kselftest/arm64: Use shared OPTIMZER_HIDE_VAR() definiton
kselftest/arm64: Make the tools/include headers available
tools include: Add some common function attributes
tools compiler.h: Add OPTIMIZER_HIDE_VAR()
kselftest/arm64: Exit streaming mode after collecting signal context
kselftest/arm64: add RCpc load-acquire to hwcap test
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