fpregs lock disables preemption on RT but fpu_inherit_perms() does
spin_lock_irq(), which, on RT, uses rtmutexes and they need to be
preemptible.
- Check the page offset and the length of the data supplied by userspace
for overflow when specifying a set of pages to add to an SGX enclave
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Merge tag 'x86_urgent_for_v6.1_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Do not hold fpregs lock when inheriting FPU permissions because the
fpregs lock disables preemption on RT but fpu_inherit_perms() does
spin_lock_irq(), which, on RT, uses rtmutexes and they need to be
preemptible.
- Check the page offset and the length of the data supplied by
userspace for overflow when specifying a set of pages to add to an
SGX enclave
* tag 'x86_urgent_for_v6.1_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Drop fpregs lock before inheriting FPU permissions
x86/sgx: Add overflow check in sgx_validate_offset_length()
for more than 4K
- Fix a NULL ptr dereference which can happen after an NMI interferes
with the event enabling dance in amd_pmu_enable_all()
- Free the events array too when freeing uncore contexts on CPU online,
thereby fixing a memory leak
- Improve the pending SIGTRAP check
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Merge tag 'perf_urgent_for_v6.1_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Borislav Petkov:
- Fix an intel PT erratum where CPUs do not support single range output
for more than 4K
- Fix a NULL ptr dereference which can happen after an NMI interferes
with the event enabling dance in amd_pmu_enable_all()
- Free the events array too when freeing uncore contexts on CPU online,
thereby fixing a memory leak
- Improve the pending SIGTRAP check
* tag 'perf_urgent_for_v6.1_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/pt: Fix sampling using single range output
perf/x86/amd: Fix crash due to race between amd_pmu_enable_all, perf NMI and throttling
perf/x86/amd/uncore: Fix memory leak for events array
perf: Improve missing SIGTRAP checking
- Fix writable sections being moved into the rodata region.
Thanks to: Nicholas Piggin, Christophe Leroy.
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Merge tag 'powerpc-6.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
- Fix writable sections being moved into the rodata region.
Thanks to Nicholas Piggin and Christophe Leroy.
* tag 'powerpc-6.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Fix writable sections being moved into the rodata region
- Fix a build error with CONFIG_CFI_CLANG + CONFIG_FTRACE when
CONFIG_FUNCTION_GRAPH_TRACER is not enabled.
- Fix a BUG_ON triggered by the page table checker due to incorrect
file_map_count for non-leaf pmd/pud (the arm64
pmd_user_accessible_page() not checking whether it's a leaf entry).
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Fix a build error with CONFIG_CFI_CLANG + CONFIG_FTRACE when
CONFIG_FUNCTION_GRAPH_TRACER is not enabled.
- Fix a BUG_ON triggered by the page table checker due to incorrect
file_map_count for non-leaf pmd/pud (the arm64
pmd_user_accessible_page() not checking whether it's a leaf entry).
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/mm: fix incorrect file_map_count for non-leaf pmd/pud
arm64: ftrace: Define ftrace_stub_graph only with FUNCTION_GRAPH_TRACER
- Fix deadlock in discontiguous saved segments (DCSS) block device
driver. When adding a disk and scanning partitions the scan would
not break out early without a missed flag.
- Avoid using global register variable for current_stack_pointer
due to an old bug in gcc versions prior to gcc-8.4. Due to this
bug a broken code is generated, which leads to stack corruptions.
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Merge tag 's390-6.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Alexander Gordeev:
- Fix deadlock in discontiguous saved segments (DCSS) block device
driver. When adding a disk and scanning partitions the scan would not
break out early without a missed flag.
- Avoid using global register variable for current_stack_pointer due to
an old bug in gcc versions prior to gcc-8.4. Due to this bug a broken
code is generated, which leads to stack corruptions.
* tag 's390-6.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: avoid using global register for current_stack_pointer
s390/dcssblk: fix deadlock when adding a DCSS
Another set of devicetree and code changes for SoC platforms,
notably:
- DT schema warning fixes for i.MX
- Functional fixes for i.MX tqma8mqml-mba8mx USB and
i.MX8M OCOTP
- MAINTAINERS updates for Hisilicon and RISC-V, documenting
which RISC-V SoC specific patches will now get merged through
the SoC tree in the future.
- A code fix for at91 suspend, to work around broken hardware
- A devicetree fix for lan966x/pcb8291 LED support
- Lots of DT fixes for Qualcomm SoCs, mostly fixing minor
problems like incorrect register sizes and schema warnings.
One fix makes the UFS controller work on sc8280xp, and
six fixes address the same regulator problem in a variety
of platforms.
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Merge tag 'soc-fixes-6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"Another set of devicetree and code changes for SoC platforms, notably:
- DT schema warning fixes for i.MX
- Functional fixes for i.MX tqma8mqml-mba8mx USB and i.MX8M OCOTP
- MAINTAINERS updates for Hisilicon and RISC-V, documenting which
RISC-V SoC specific patches will now get merged through the SoC
tree in the future.
- A code fix for at91 suspend, to work around broken hardware
- A devicetree fix for lan966x/pcb8291 LED support
- Lots of DT fixes for Qualcomm SoCs, mostly fixing minor problems
like incorrect register sizes and schema warnings. One fix makes
the UFS controller work on sc8280xp, and six fixes address the same
regulator problem in a variety of platforms"
* tag 'soc-fixes-6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (31 commits)
MAINTAINERS: repair Microchip corei2c driver entry
MAINTAINERS: add an entry for StarFive devicetrees
MAINTAINERS: generify the Microchip RISC-V entry name
MAINTAINERS: add entries for misc. RISC-V SoC drivers and devicetrees
MAINTAINERS: git://github.com -> https://github.com for HiSilicon
soc: imx8m: Enable OCOTP clock before reading the register
arm64: dts: imx93-pinfunc: drop execution permission
arm64: dts: imx8mn: Fix NAND controller size-cells
arm64: dts: imx8mm: Fix NAND controller size-cells
ARM: dts: imx7: Fix NAND controller size-cells
arm64: dts: imx8mm-tqma8mqml-mba8mx: Fix USB DR
ARM: at91: pm: avoid soft resetting AC DLL
ARM: dts: lan966x: Enable sgpio on pcb8291
arm64: dts: qcom: sm8250: Disable the not yet supported cluster idle state
ARM: dts: at91: sama7g5: fix signal name of pin PB2
arm64: dts: qcom: sc7280: Add the reset reg for lpass audiocc on SC7280
arm64: dts: qcom: sc8280xp: fix UFS PHY serdes size
arm64: dts: qcom: sc8280xp: drop broken DP PHY nodes
arm64: dts: qcom: sc8280xp: fix USB PHY PCS registers
arm64: dts: qcom: sc8280xp: fix USB1 PHY RX1 registers
...
Current release - regressions:
- tls: fix memory leak in tls_enc_skb() and tls_sw_fallback_init()
Previous releases - regressions:
- bridge: fix memory leaks when changing VLAN protocol
- dsa: make dsa_master_ioctl() see through port_hwtstamp_get() shims
- dsa: don't leak tagger-owned storage on switch driver unbind
- eth: mlxsw: avoid warnings when not offloaded FDB entry with IPv6 is removed
- eth: stmmac: ensure tx function is not running in stmmac_xdp_release()
- eth: hns3: fix return value check bug of rx copybreak
Previous releases - always broken:
- kcm: close race conditions on sk_receive_queue
- bpf: fix alignment problem in bpf_prog_test_run_skb()
- bpf: fix writing offset in case of fault in strncpy_from_kernel_nofault
- eth: macvlan: use built-in RCU list checking
- eth: marvell: add sleep time after enabling the loopback bit
- eth: octeon_ep: fix potential memory leak in octep_device_setup()
Misc:
- tcp: configurable source port perturb table size
- bpf: Convert BPF_DISPATCHER to use static_call() (not ftrace)
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf.
Current release - regressions:
- tls: fix memory leak in tls_enc_skb() and tls_sw_fallback_init()
Previous releases - regressions:
- bridge: fix memory leaks when changing VLAN protocol
- dsa: make dsa_master_ioctl() see through port_hwtstamp_get() shims
- dsa: don't leak tagger-owned storage on switch driver unbind
- eth: mlxsw: avoid warnings when not offloaded FDB entry with IPv6
is removed
- eth: stmmac: ensure tx function is not running in
stmmac_xdp_release()
- eth: hns3: fix return value check bug of rx copybreak
Previous releases - always broken:
- kcm: close race conditions on sk_receive_queue
- bpf: fix alignment problem in bpf_prog_test_run_skb()
- bpf: fix writing offset in case of fault in
strncpy_from_kernel_nofault
- eth: macvlan: use built-in RCU list checking
- eth: marvell: add sleep time after enabling the loopback bit
- eth: octeon_ep: fix potential memory leak in octep_device_setup()
Misc:
- tcp: configurable source port perturb table size
- bpf: Convert BPF_DISPATCHER to use static_call() (not ftrace)"
* tag 'net-6.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (51 commits)
net: use struct_group to copy ip/ipv6 header addresses
net: usb: smsc95xx: fix external PHY reset
net: usb: qmi_wwan: add Telit 0x103a composition
netdevsim: Fix memory leak of nsim_dev->fa_cookie
tcp: configurable source port perturb table size
l2tp: Serialize access to sk_user_data with sk_callback_lock
net: thunderbolt: Fix error handling in tbnet_init()
net: microchip: sparx5: Fix potential null-ptr-deref in sparx_stats_init() and sparx5_start()
net: lan966x: Fix potential null-ptr-deref in lan966x_stats_init()
net: dsa: don't leak tagger-owned storage on switch driver unbind
net/x25: Fix skb leak in x25_lapb_receive_frame()
net: ag71xx: call phylink_disconnect_phy if ag71xx_hw_enable() fail in ag71xx_open()
bridge: switchdev: Fix memory leaks when changing VLAN protocol
net: hns3: fix setting incorrect phy link ksettings for firmware in resetting process
net: hns3: fix return value check bug of rx copybreak
net: hns3: fix incorrect hw rss hash type of rx packet
net: phy: marvell: add sleep time after enabling the loopback bit
net: ena: Fix error handling in ena_init()
kcm: close race conditions on sk_receive_queue
net: ionic: Fix error handling in ionic_init_module()
...
- Switch to usb-role-switch for fixing USB device mode on
tqma8mqml-mba8mx board, so that Dual Role is fully functional.
- A series from Marek Vasut to fix dt-schema warning caused by NAND
controller size-cells.
- Fix file permission of imx93-pinfunc header.
- Enable OCOTP clock in soc-imx8m driver to fix a kexec kernel hang
issue.
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Merge tag 'imx-fixes-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes
i.MX fixes for 6.1, 2nd round:
- Switch to usb-role-switch for fixing USB device mode on
tqma8mqml-mba8mx board, so that Dual Role is fully functional.
- A series from Marek Vasut to fix dt-schema warning caused by NAND
controller size-cells.
- Fix file permission of imx93-pinfunc header.
- Enable OCOTP clock in soc-imx8m driver to fix a kexec kernel hang
issue.
* tag 'imx-fixes-6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
soc: imx8m: Enable OCOTP clock before reading the register
arm64: dts: imx93-pinfunc: drop execution permission
arm64: dts: imx8mn: Fix NAND controller size-cells
arm64: dts: imx8mm: Fix NAND controller size-cells
ARM: dts: imx7: Fix NAND controller size-cells
arm64: dts: imx8mm-tqma8mqml-mba8mx: Fix USB DR
Link: https://lore.kernel.org/r/20221116090402.GA1274@T480
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'for-linus-6.1-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Two trivial cleanups, and three simple fixes"
* tag 'for-linus-6.1-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/platform-pci: use define instead of literal number
xen/platform-pci: add missing free_irq() in error path
xen-pciback: Allow setting PCI_MSIX_FLAGS_MASKALL too
xen/pcpu: fix possible memory leak in register_pcpu()
x86/xen: Use kstrtobool() instead of strtobool()
Commit 30de14b188 ("s390: current_stack_pointer shouldn't be a
function") made current_stack_pointer a global register variable like
on many other architectures. Unfortunately on s390 it uncovers old
gcc bug which is fixed only since gcc-9.1 [gcc commit 3ad7fed1cc87
("S/390: Fix PR89775. Stackpointer save/restore instructions removed")]
and backported to gcc-8.4 and later. Due to this bug gcc versions prior
to 8.4 generate broken code which leads to stack corruptions.
Current minimal gcc version required to build the kernel is declared
as 5.1. It is not possible to fix all old gcc versions, so work
around this problem by avoiding using global register variable for
current_stack_pointer.
Fixes: 30de14b188 ("s390: current_stack_pointer shouldn't be a function")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
.data.rel.ro* catches .data.rel.root_cpuacct, and the kernel crashes on
a store in css_clear_dir. At least we know read-only data protection is
working...
Fixes: b6adc6d6d3 ("powerpc/build: move .data.rel.ro, .sdata2 to read-only")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221116043954.3307852-1-npiggin@gmail.com
When compiling linux 6.1.0-rc3 configured with CONFIG_64BIT=y and
CONFIG_PARAVIRT_SPINLOCKS=y on x86_64 using LLVM 11.0, an error:
"<inline asm> error: changed section flags for .spinlock.text,
expected:: 0x6" occurred.
The reason is the .spinlock.text in kernel/locking/qspinlock.o
is used many times, but its flags are omitted in subsequent use.
LLVM 11.0 assembler didn't permit to
leave out flags in subsequent uses of the same sections.
So this patch adds the corresponding flags to avoid above error.
Fixes: 501f7f69bc ("locking: Add __lockfunc to slow path functions")
Signed-off-by: Guo Jin <guoj17@chinatelecom.cn>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20221108060126.2505-1-guoj17@chinatelecom.cn
Deal with errata TGL052, ADL037 and RPL017 "Trace May Contain Incorrect
Data When Configured With Single Range Output Larger Than 4KB" by
disabling single range output whenever larger than 4KB.
Fixes: 670638477a ("perf/x86/intel/pt: Opportunistically use single range output mode")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20221112151508.13768-1-adrian.hunter@intel.com
amd_pmu_enable_all() does:
if (!test_bit(idx, cpuc->active_mask))
continue;
amd_pmu_enable_event(cpuc->events[idx]);
A perf NMI of another event can come between these two steps. Perf NMI
handler internally disables and enables _all_ events, including the one
which nmi-intercepted amd_pmu_enable_all() was in process of enabling.
If that unintentionally enabled event has very low sampling period and
causes immediate successive NMI, causing the event to be throttled,
cpuc->events[idx] and cpuc->active_mask gets cleared by x86_pmu_stop().
This will result in amd_pmu_enable_event() getting called with event=NULL
when amd_pmu_enable_all() resumes after handling the NMIs. This causes a
kernel crash:
BUG: kernel NULL pointer dereference, address: 0000000000000198
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
[...]
Call Trace:
<TASK>
amd_pmu_enable_all+0x68/0xb0
ctx_resched+0xd9/0x150
event_function+0xb8/0x130
? hrtimer_start_range_ns+0x141/0x4a0
? perf_duration_warn+0x30/0x30
remote_function+0x4d/0x60
__flush_smp_call_function_queue+0xc4/0x500
flush_smp_call_function_queue+0x11d/0x1b0
do_idle+0x18f/0x2d0
cpu_startup_entry+0x19/0x20
start_secondary+0x121/0x160
secondary_startup_64_no_verify+0xe5/0xeb
</TASK>
amd_pmu_disable_all()/amd_pmu_enable_all() calls inside perf NMI handler
were recently added as part of BRS enablement but I'm not sure whether
we really need them. We can just disable BRS in the beginning and enable
it back while returning from NMI. This will solve the issue by not
enabling those events whose active_masks are set but are not yet enabled
in hw pmu.
Fixes: ada543459c ("perf/x86/amd: Add AMD Fam19h Branch Sampling support")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20221114044029.373-1-ravi.bangoria@amd.com
DE_CFG contains the LFENCE serializing bit, restore it on resume too.
This is relevant to older families due to the way how they do S3.
Unify and correct naming while at it.
Fixes: e4d0e84e49 ("x86/cpu/AMD: Make LFENCE a serializing instruction")
Reported-by: Andrew Cooper <Andrew.Cooper3@citrix.com>
Reported-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
strtobool() is the same as kstrtobool().
However, the latter is more used within the kernel.
In order to remove strtobool() and slightly simplify kstrtox.h, switch to
the other function name.
While at it, include the corresponding header file (<linux/kstrtox.h>)
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/e91af3c8708af38b1c57e0a2d7eb9765dda0e963.1667336095.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Juergen Gross <jgross@suse.com>
The 0-day bot reports that arm64 builds with CONFIG_CFI_CLANG +
CONFIG_FTRACE are broken when CONFIG_FUNCTION_GRAPH_TRACER is not
enabled:
ld.lld: error: undefined symbol: __kcfi_typeid_ftrace_stub_graph
>>> referenced by entry-ftrace.S:299 (arch/arm64/kernel/entry-ftrace.S:299)
>>> arch/arm64/kernel/entry-ftrace.o:(.text+0x48) in archive vmlinux.a
This is caused by ftrace_stub_graph using SYM_TYPE_FUNC_START when
the address of the function is not taken in any C translation unit.
Fix the build by only defining ftrace_stub_graph when it's actually
needed, i.e. with CONFIG_FUNCTION_GRAPH_TRACER.
Link: https://lore.kernel.org/lkml/202210251659.tRMs78RH-lkp@intel.com/
Fixes: 883bbbffa5 ("ftrace,kcfi: Separate ftrace_stub() and ftrace_stub_graph()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20221109192831.3057131-1-samitolvanen@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
It contains:
- signal name fix for a pin on SAMA7G5
- memory self-refresh fix for SAMA7G5 by avoid soft resetting AC
DLL which can introduce glitches in RAM controller and lead to
unexpected behavior
- led support fix for lan966x-pcb8291 board by enabling sgpio node
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Merge tag 'at91-fixes-6.1' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/fixes
AT91 fixes for 6.1
It contains:
- signal name fix for a pin on SAMA7G5
- memory self-refresh fix for SAMA7G5 by avoid soft resetting AC
DLL which can introduce glitches in RAM controller and lead to
unexpected behavior
- led support fix for lan966x-pcb8291 board by enabling sgpio node
* tag 'at91-fixes-6.1' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
ARM: at91: pm: avoid soft resetting AC DLL
ARM: dts: lan966x: Enable sgpio on pcb8291
ARM: dts: at91: sama7g5: fix signal name of pin PB2
Link: https://lore.kernel.org/r/20221110115411.180876-1-claudiu.beznea@microchip.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This fixes the APCS register region on IPQ8074 to not overlap
with adjacent nodes.
It lists the valid LDO modes on a variety of platforms, as this is not
required by the binding and implementation.
The reference clocks for the two UFS instances on SC8280XP are
corrected, to avoid relying on the state left by most versions of the
bootloader.
A number of issues are corrected with regards to the QMP PHY register
ranges on SC8280XP.
SC7280 gains a missing lpass reset region.
Lastly cluster idle is termporarily disabled on SM8250 to avoid issues
with booting the platform, until the last missing pieces lands.
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Merge tag 'qcom-arm64-fixes-for-6.1' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes
Qualcomm ARM64 DTS fixes for 6.1
This fixes the APCS register region on IPQ8074 to not overlap
with adjacent nodes.
It lists the valid LDO modes on a variety of platforms, as this is not
required by the binding and implementation.
The reference clocks for the two UFS instances on SC8280XP are
corrected, to avoid relying on the state left by most versions of the
bootloader.
A number of issues are corrected with regards to the QMP PHY register
ranges on SC8280XP.
SC7280 gains a missing lpass reset region.
Lastly cluster idle is termporarily disabled on SM8250 to avoid issues
with booting the platform, until the last missing pieces lands.
* tag 'qcom-arm64-fixes-for-6.1' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
arm64: dts: qcom: sm8250: Disable the not yet supported cluster idle state
arm64: dts: qcom: sc7280: Add the reset reg for lpass audiocc on SC7280
arm64: dts: qcom: sc8280xp: fix UFS PHY serdes size
arm64: dts: qcom: sc8280xp: drop broken DP PHY nodes
arm64: dts: qcom: sc8280xp: fix USB PHY PCS registers
arm64: dts: qcom: sc8280xp: fix USB1 PHY RX1 registers
arm64: dts: qcom: sc8280xp: fix USB0 PHY PCS_MISC registers
arm64: dts: qcom: sc8280xp: correct ref clock for ufs_mem_phy
arm64: dts: qcom: sc8280xp: fix ufs_card_phy ref clock
arm64: dts: qcom: sm8350-hdk: Specify which LDO modes are allowed
arm64: dts: qcom: sm8250-xperia-edo: Specify which LDO modes are allowed
arm64: dts: qcom: sm8150-xperia-kumano: Specify which LDO modes are allowed
arm64: dts: qcom: sc8280xp-crd: Specify which LDO modes are allowed
arm64: dts: qcom: sa8295p-adp: Specify which LDO modes are allowed
arm64: dts: qcom: sa8155p-adp: Specify which LDO modes are allowed
Revert "arm64: dts: qcom: msm8996: add missing TCSR syscon compatible"
arm64: dts: qcom: ipq8074: correct APCS register space size
Link: https://lore.kernel.org/r/20221110040635.795921-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- check kmalloc failures in Loongson64 kexec
- fix builds with clang-14
- fix char/int handling in pic32
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Merge tag 'mips-fixes_6.1_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:
- fix jump label branch range check
- check kmalloc failures in Loongson64 kexec
- fix builds with clang-14
- fix char/int handling in pic32
* tag 'mips-fixes_6.1_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: pic32: treat port as signed integer
MIPS: jump_label: Fix compat branch range check
mips: alchemy: gpio: Include the right header
MIPS: Loongson64: Add WARN_ON on kexec related kmalloc failed
MIPS: fix duplicate definitions for exported symbols
mips: boot/compressed: use __NO_FORTIFY
- Force the use of SetVirtualAddressMap() on Ampera Altra arm64
machines, which crash in SetTime() if no virtual remapping is used
- Drop a spurious warning on misaligned runtime regions when using 16k
or 64k pages on arm64
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Merge tag 'efi-fixes-for-v6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
- Force the use of SetVirtualAddressMap() on Ampera Altra arm64
machines, which crash in SetTime() if no virtual remapping is used
This is the first time we've added an SMBIOS based quirk on arm64,
but fortunately, we can just call a EFI protocol to grab the type #1
SMBIOS record when running in the stub, so we don't need all the
machinery we have in the kernel proper to parse SMBIOS data.
- Drop a spurious warning on misaligned runtime regions when using 16k
or 64k pages on arm64
* tag 'efi-fixes-for-v6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
arm64: efi: Fix handling of misaligned runtime regions and drop warning
arm64: efi: Force the use of SetVirtualAddressMap() on Altra machines
Andrii Nakryiko says:
====================
bpf 2022-11-11
We've added 11 non-merge commits during the last 8 day(s) which contain
a total of 11 files changed, 83 insertions(+), 74 deletions(-).
The main changes are:
1) Fix strncpy_from_kernel_nofault() to prevent out-of-bounds writes,
from Alban Crequy.
2) Fix for bpf_prog_test_run_skb() to prevent wrong alignment,
from Baisong Zhong.
3) Switch BPF_DISPATCHER to static_call() instead of ftrace infra, with
a small build fix on top, from Peter Zijlstra and Nathan Chancellor.
4) Fix memory leak in BPF verifier in some error cases, from Wang Yufen.
5) 32-bit compilation error fixes for BPF selftests, from Pu Lehui and
Yang Jihong.
6) Ensure even distribution of per-CPU free list elements, from Xu Kuohai.
7) Fix copy_map_value() to track special zeroed out areas properly,
from Xu Kuohai.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Fix offset calculation error in __copy_map_value and zero_map_value
bpf: Initialize same number of free nodes for each pcpu_freelist
selftests: bpf: Add a test when bpf_probe_read_kernel_str() returns EFAULT
maccess: Fix writing offset in case of fault in strncpy_from_kernel_nofault()
selftests/bpf: Fix test_progs compilation failure in 32-bit arch
selftests/bpf: Fix casting error when cross-compiling test_verifier for 32-bit platforms
bpf: Fix memory leaks in __check_func_call
bpf: Add explicit cast to 'void *' for __BPF_DISPATCHER_UPDATE()
bpf: Convert BPF_DISPATCHER to use static_call() (not ftrace)
bpf: Revert ("Fix dispatcher patchable function entry to 5 bytes nop")
bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb()
====================
Link: https://lore.kernel.org/r/20221111231624.938829-1-andrii@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
introduced post-6.0 or which aren't considered serious enough to justify a
-stable backport.
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Merge tag 'mm-hotfixes-stable-2022-11-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc hotfixes from Andrew Morton:
"22 hotfixes.
Eight are cc:stable and the remainder address issues which were
introduced post-6.0 or which aren't considered serious enough to
justify a -stable backport"
* tag 'mm-hotfixes-stable-2022-11-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (22 commits)
docs: kmsan: fix formatting of "Example report"
mm/damon/dbgfs: check if rm_contexts input is for a real context
maple_tree: don't set a new maximum on the node when not reusing nodes
maple_tree: fix depth tracking in maple_state
arch/x86/mm/hugetlbpage.c: pud_huge() returns 0 when using 2-level paging
fs: fix leaked psi pressure state
nilfs2: fix use-after-free bug of ns_writer on remount
x86/traps: avoid KMSAN bugs originating from handle_bug()
kmsan: make sure PREEMPT_RT is off
Kconfig.debug: ensure early check for KMSAN in CONFIG_KMSAN_WARN
x86/uaccess: instrument copy_from_user_nmi()
kmsan: core: kmsan_in_runtime() should return true in NMI context
mm: hugetlb_vmemmap: include missing linux/moduleparam.h
mm/shmem: use page_mapping() to detect page cache for uffd continue
mm/memremap.c: map FS_DAX device memory as decrypted
Partly revert "mm/thp: carry over dirty bit when thp splits on pmd"
nilfs2: fix deadlock in nilfs_count_free_blocks()
mm/mmap: fix memory leak in mmap_region()
hugetlbfs: don't delete error page from pagecache
maple_tree: reorganize testing to restore module testing
...
- Another fix for rodata=full. Since rodata= is not a simple boolean on
arm64 (accepting 'full' as well), it got inadvertently broken by
changes in the core code. If rodata=on is the default and rodata=off
is passed on the kernel command line, rodata_full is never disabled.
- Fix gcc compiler warning of shifting 0xc0 into bits 31:24 without an
explicit conversion to u32 (triggered by the AMPERE1 MIDR definition).
- Include asm/ptrace.h in asm/syscall_wrapper.h to fix an incomplete
struct pt_regs type causing the BPF verifier to refuse to load a
tracing program which accesses pt_regs.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Another fix for rodata=full. Since rodata= is not a simple boolean on
arm64 (accepting 'full' as well), it got inadvertently broken by
changes in the core code. If rodata=on is the default and rodata=off
is passed on the kernel command line, rodata_full is never disabled
- Fix gcc compiler warning of shifting 0xc0 into bits 31:24 without an
explicit conversion to u32 (triggered by the AMPERE1 MIDR definition)
- Include asm/ptrace.h in asm/syscall_wrapper.h to fix an incomplete
struct pt_regs type causing the BPF verifier to refuse to load a
tracing program which accesses pt_regs
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/syscall: Include asm/ptrace.h in syscall_wrapper header.
arm64: Fix bit-shifting UB in the MIDR_CPU_MODEL() macro
arm64: fix rodata=full again
- fix memcpy warning about field-spanning write in zcrypt driver.
- minor updates to defconfigs.
- Remove CONFIG_DEBUG_INFO_BTF from all defconfigs and add btf.config
addon config file. It significantly decreases compile time and allows
quickly enabling that option into the current kernel config.
- Add kasan.config addon config file which allows to easily enable
KASAN into the current kernel config.
- binutils commit 906f69cf65da ("IBM zSystems: Issue error for *DBL
relocs on misaligned symbols") caused several link errors.
Always build relocatable kernel to avoid this problem.
- Raise the minimum clang version to 15.0.0 to avoid silent generation
of a corrupted code.
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Merge tag 's390-6.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Alexander Gordeev:
- fix memcpy warning about field-spanning write in zcrypt driver
- minor updates to defconfigs
- remove CONFIG_DEBUG_INFO_BTF from all defconfigs and add btf.config
addon config file. It significantly decreases compile time and allows
quickly enabling that option into the current kernel config
- add kasan.config addon config file which allows to easily enable
KASAN into the current kernel config
- binutils commit 906f69cf65da ("IBM zSystems: Issue error for *DBL
relocs on misaligned symbols") caused several link errors. Always
build relocatable kernel to avoid this problem
- raise the minimum clang version to 15.0.0 to avoid silent generation
of a corrupted code
* tag 's390-6.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
scripts/min-tool-version.sh: raise minimum clang version to 15.0.0 for s390
s390: always build relocatable kernel
s390/configs: add kasan.config addon config file
s390/configs: move CONFIG_DEBUG_INFO_BTF into btf.config addon config
s390: update defconfigs
s390/zcrypt: fix warning about field-spanning write
* A fix to add the missing PWM LEDs into the SiFive HiFive Unleashed
device tree.
* A fix to fully clear a task's registers on creation, as they end up in
userspace and thus leak kernel memory.
* A pair of VDSO-related build fixes that manifest on recent LLVM-based
toolchains.
* A fix to our early init to ensure the DT is adequately processed
before reserved memory nodes are processed.
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Merge tag 'riscv-for-linus-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix to add the missing PWM LEDs into the SiFive HiFive Unleashed
device tree.
- A fix to fully clear a task's registers on creation, as they end up
in userspace and thus leak kernel memory.
- A pair of VDSO-related build fixes that manifest on recent LLVM-based
toolchains.
- A fix to our early init to ensure the DT is adequately processed
before reserved memory nodes are processed.
* tag 'riscv-for-linus-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: vdso: Do not add missing symbols to version section in linker script
riscv: fix reserved memory setup
riscv: vdso: fix build with llvm
riscv: process: fix kernel info leakage
riscv: dts: sifive unleashed: Add PWM controlled LEDs
* PCI fix
* PV clock fix
x86:
* Fix clash between PMU MSRs and other MSRs
* Prepare SVM assembly trampoline for 6.2 retbleed mitigation
and for...
* ... tightening IBRS restore on vmexit, moving it before
the first RET or indirect branch
* Fix log level for VMSA dump
* Block all page faults during kvm_zap_gfn_range()
Tools:
* kvm_stat: fix incorrect detection of debugfs
* kvm_stat: update vmexit definitions
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm
"This is a pretty large diffstat for this time of the release. The main
culprit is a reorganization of the AMD assembly trampoline, allowing
percpu variables to be accessed early.
This is needed for the return stack depth tracking retbleed mitigation
that will be in 6.2, but it also makes it possible to tighten the IBRS
restore on vmexit. The latter change is a long tail of the
spectrev2/retbleed patches (the corresponding Intel change was simpler
and went in already last June), which is why I am including it right
now instead of sharing a topic branch with tip.
Being assembly and being rich in comments makes the line count balloon
a bit, but I am pretty confident in the change (famous last words)
because the reorganization actually makes everything simpler and more
understandable than before. It has also had external review and has
been tested on the aforementioned 6.2 changes, which explode quite
brutally without the fix.
Apart from this, things are pretty normal.
s390:
- PCI fix
- PV clock fix
x86:
- Fix clash between PMU MSRs and other MSRs
- Prepare SVM assembly trampoline for 6.2 retbleed mitigation and
for...
- ... tightening IBRS restore on vmexit, moving it before the first
RET or indirect branch
- Fix log level for VMSA dump
- Block all page faults during kvm_zap_gfn_range()
Tools:
- kvm_stat: fix incorrect detection of debugfs
- kvm_stat: update vmexit definitions"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86/mmu: Block all page faults during kvm_zap_gfn_range()
KVM: x86/pmu: Limit the maximum number of supported AMD GP counters
KVM: x86/pmu: Limit the maximum number of supported Intel GP counters
KVM: x86/pmu: Do not speculatively query Intel GP PMCs that don't exist yet
KVM: SVM: Only dump VMSA to klog at KERN_DEBUG level
tools/kvm_stat: update exit reasons for vmx/svm/aarch64/userspace
tools/kvm_stat: fix incorrect detection of debugfs
x86, KVM: remove unnecessary argument to x86_virt_spec_ctrl and callers
KVM: SVM: move MSR_IA32_SPEC_CTRL save/restore to assembly
KVM: SVM: restore host save area from assembly
KVM: SVM: move guest vmsave/vmload back to assembly
KVM: SVM: do not allocate struct svm_cpu_data dynamically
KVM: SVM: remove dead field from struct svm_cpu_data
KVM: SVM: remove unused field from struct vcpu_svm
KVM: SVM: retrieve VMCB from assembly
KVM: SVM: adjust register allocation for __svm_vcpu_run()
KVM: SVM: replace regs argument of __svm_vcpu_run() with vcpu_svm
KVM: x86: use a separate asm-offsets.c file
KVM: s390: pci: Fix allocation size of aift kzdev elements
KVM: s390: pv: don't allow userspace to set the clock under PV
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Merge tag 'hyperv-fixes-signed-20221110' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv fixes from Wei Liu:
- Fix TSC MSR write for root partition (Anirudh Rayabharam)
- Fix definition of vector in pci-hyperv driver (Dexuan Cui)
- A few other misc patches
* tag 'hyperv-fixes-signed-20221110' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
PCI: hv: Fix the definition of vector in hv_compose_msi_msg()
MAINTAINERS: remove sthemmin
x86/hyperv: fix invalid writes to MSRs during root partition kexec
clocksource/drivers/hyperv: add data structure for reference TSC MSR
Drivers: hv: fix repeated words in comments
x86/hyperv: Remove BUG_ON() for kmap_local_page()
get_port_from_cmdline() returns an int, yet is assigned to a char, which
is wrong in its own right, but also, with char becoming unsigned, this
poses problems, because -1 is used as an error value. Further
complicating things, fw_init_early_console() is only ever called with a
-1 argument. Fix this up by removing the unused argument from
fw_init_early_console() and treating port as a proper signed integer.
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cast upper bound of branch range to long to do signed compare,
avoid negative offset trigger this warning.
Fixes: 9b6584e35f ("MIPS: jump_label: Use compact branches for >= r6")
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
The local GPIO driver in the MIPS Alchemy is including the legacy
<linux/gpio.h> header but what it wants is to implement a GPIO
driver so include <linux/gpio/driver.h> instead.
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: linux-gpio@vger.kernel.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Add WARN_ON on kexec related kmalloc failed, avoid to pass NULL pointer
to following memcpy and loongson_kexec_prepare.
Fixes: 6ce48897ce ("MIPS: Loongson64: Add kexec/kdump support")
Signed-off-by: Liao Chang <liaochang1@huawei.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Building with clang-14 fails with:
AS arch/mips/kernel/relocate_kernel.o
<unknown>:0: error: symbol 'kexec_args' is already defined
<unknown>:0: error: symbol 'secondary_kexec_args' is already defined
<unknown>:0: error: symbol 'kexec_start_address' is already defined
<unknown>:0: error: symbol 'kexec_indirection_page' is already defined
<unknown>:0: error: symbol 'relocate_new_kernel_size' is already defined
It turns out EXPORT defined in asm/asm.h expands to a symbol definition,
so there is no need to define these symbols again. Remove duplicated
symbol definitions.
Fixes: 7aa1c8f47e ("MIPS: kdump: Add support")
Signed-off-by: Rongwei Zhang <pudh4418@gmail.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
In the mips CONFIG_SYS_SUPPORTS_ZBOOT kernel, fix the compile error
when using CONFIG_FORTIFY_SOURCE=y
LD vmlinuz
mipsel-openwrt-linux-musl-ld: arch/mips/boot/compressed/decompress.o: in
function `decompress_kernel':
./include/linux/decompress/mm.h:(.text.decompress_kernel+0x177c):
undefined reference to `warn_slowpath_fmt'
kernel test robot helped identify this as related to fortify. The error
appeared with commit 54d9469bc5 ("fortify: Add run-time WARN for
cross-field memcpy()")
Link: https://lore.kernel.org/r/202209161144.x9xSqNQZ-lkp@intel.com/
Resolve this in the same style as commit cfecea6ead ("lib/string:
Move helper functions out of string.c")
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 54d9469bc5 ("fortify: Add run-time WARN for cross-field memcpy()")
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: John Thomson <git@johnthomson.fastmail.com.au>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
When zapping a GFN range, pass 0 => ALL_ONES for the to-be-invalidated
range to effectively block all page faults while the zap is in-progress.
The invalidation helpers take a host virtual address, whereas zapping a
GFN obviously provides a guest physical address and with the wrong unit
of measurement (frame vs. byte).
Alternatively, KVM could walk all memslots to get the associated HVAs,
but thanks to SMM, that would require multiple lookups. And practically
speaking, kvm_zap_gfn_range() usage is quite rare and not a hot path,
e.g. MTRR and CR0.CD are almost guaranteed to be done only on vCPU0
during boot, and APICv inhibits are similarly infrequent operations.
Fixes: edb298c663 ("KVM: x86/mmu: bump mmu notifier count in kvm_zap_gfn_range")
Reported-by: Chao Peng <chao.p.peng@linux.intel.com>
Cc: stable@vger.kernel.org
Cc: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20221111001841.2412598-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The NAND controller size-cells should be 0 per DT bindings.
Fix the following warning produces by DT bindings check:
"
nand-controller@33002000: #size-cells:0:0: 0 was expected
nand-controller@33002000: Unevaluated properties are not allowed ('#address-cells', '#size-cells' were unexpected)
"
Fixes: 6c3debcbae ("arm64: dts: freescale: Add i.MX8MN dtsi support")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The NAND controller size-cells should be 0 per DT bindings.
Fix the following warning produces by DT bindings check:
"
nand-controller@33002000: #size-cells:0:0: 0 was expected
nand-controller@33002000: Unevaluated properties are not allowed ('#address-cells', '#size-cells' were unexpected)
"
Fix the missing space in node name too.
Fixes: a05ea40eb3 ("arm64: dts: imx: Add i.mx8mm dtsi support")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The NAND controller size-cells should be 0 per DT bindings.
Fix the following warning produces by DT bindings check:
"
nand-controller@33002000: #size-cells:0:0: 0 was expected
nand-controller@33002000: Unevaluated properties are not allowed ('#address-cells', '#size-cells' were unexpected)
"
Fix the missing space in node name too.
Fixes: e7495a45a7 ("ARM: dts: imx7: add GPMI NAND and APBH DMA")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Using extcon USB host mode works properly on DR interface, e.g.
enabling/disabling VBUS. But USB device mode is not working.
Fix this by switching to usb-role-switch instead.
Fixes: dfcd1b6f76 ("arm64: dts: freescale: add initial device tree for TQMa8MQML with i.MX8MM")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Recently, ld.lld moved from '--undefined-version' to
'--no-undefined-version' as the default, which breaks the compat vDSO
build:
ld.lld: error: version script assignment of 'LINUX_4.15' to symbol '__vdso_gettimeofday' failed: symbol not defined
ld.lld: error: version script assignment of 'LINUX_4.15' to symbol '__vdso_clock_gettime' failed: symbol not defined
ld.lld: error: version script assignment of 'LINUX_4.15' to symbol '__vdso_clock_getres' failed: symbol not defined
These symbols are not present in the compat vDSO or the regular vDSO for
32-bit but they are unconditionally included in the version section of
the linker script, which is prohibited with '--no-undefined-version'.
Fix this issue by only including the symbols that are actually exported
in the version section of the linker script.
Link: https://github.com/ClangBuiltLinux/linux/issues/1756
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221108171324.3377226-1-nathan@kernel.org/
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Currently, RISC-V sets up reserved memory using the "early" copy of the
device tree. As a result, when trying to get a reserved memory region
using of_reserved_mem_lookup(), the pointer to reserved memory regions
is using the early, pre-virtual-memory address which causes a kernel
panic when trying to use the buffer's name:
Unable to handle kernel paging request at virtual address 00000000401c31ac
Oops [#1]
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 6.0.0-rc1-00001-g0d9d6953d834 #1
Hardware name: Microchip PolarFire-SoC Icicle Kit (DT)
epc : string+0x4a/0xea
ra : vsnprintf+0x1e4/0x336
epc : ffffffff80335ea0 ra : ffffffff80338936 sp : ffffffff81203be0
gp : ffffffff812e0a98 tp : ffffffff8120de40 t0 : 0000000000000000
t1 : ffffffff81203e28 t2 : 7265736572203a46 s0 : ffffffff81203c20
s1 : ffffffff81203e28 a0 : ffffffff81203d22 a1 : 0000000000000000
a2 : ffffffff81203d08 a3 : 0000000081203d21 a4 : ffffffffffffffff
a5 : 00000000401c31ac a6 : ffff0a00ffffff04 a7 : ffffffffffffffff
s2 : ffffffff81203d08 s3 : ffffffff81203d00 s4 : 0000000000000008
s5 : ffffffff000000ff s6 : 0000000000ffffff s7 : 00000000ffffff00
s8 : ffffffff80d9821a s9 : ffffffff81203d22 s10: 0000000000000002
s11: ffffffff80d9821c t3 : ffffffff812f3617 t4 : ffffffff812f3617
t5 : ffffffff812f3618 t6 : ffffffff81203d08
status: 0000000200000100 badaddr: 00000000401c31ac cause: 000000000000000d
[<ffffffff80338936>] vsnprintf+0x1e4/0x336
[<ffffffff80055ae2>] vprintk_store+0xf6/0x344
[<ffffffff80055d86>] vprintk_emit+0x56/0x192
[<ffffffff80055ed8>] vprintk_default+0x16/0x1e
[<ffffffff800563d2>] vprintk+0x72/0x80
[<ffffffff806813b2>] _printk+0x36/0x50
[<ffffffff8068af48>] print_reserved_mem+0x1c/0x24
[<ffffffff808057ec>] paging_init+0x528/0x5bc
[<ffffffff808031ae>] setup_arch+0xd0/0x592
[<ffffffff8080070e>] start_kernel+0x82/0x73c
early_init_fdt_scan_reserved_mem() takes no arguments as it operates on
initial_boot_params, which is populated by early_init_dt_verify(). On
RISC-V, early_init_dt_verify() is called twice. Once, directly, in
setup_arch() if CONFIG_BUILTIN_DTB is not enabled and once indirectly,
very early in the boot process, by parse_dtb() when it calls
early_init_dt_scan_nodes().
This first call uses dtb_early_va to set initial_boot_params, which is
not usable later in the boot process when
early_init_fdt_scan_reserved_mem() is called. On arm64 for example, the
corresponding call to early_init_dt_scan_nodes() uses fixmap addresses
and doesn't suffer the same fate.
Move early_init_fdt_scan_reserved_mem() further along the boot sequence,
after the direct call to early_init_dt_verify() in setup_arch() so that
the names use the correct virtual memory addresses. The above supposed
that CONFIG_BUILTIN_DTB was not set, but should work equally in the case
where it is - unflatted_and_copy_device_tree() also updates
initial_boot_params.
Reported-by: Valentina Fernandez <valentina.fernandezalanis@microchip.com>
Reported-by: Evgenii Shatokhin <e.shatokhin@yadro.com>
Link: https://lore.kernel.org/linux-riscv/f8e67f82-103d-156c-deb0-d6d6e2756f5e@microchip.com/
Fixes: 922b0375fc ("riscv: Fix memblock reservation for device tree blob")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Evgenii Shatokhin <e.shatokhin@yadro.com>
Link: https://lore.kernel.org/r/20221107151524.3941467-1-conor.dooley@microchip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Currently, when mapping the EFI runtime regions in the EFI page tables,
we complain about misaligned regions in a rather noisy way, using
WARN().
Not only does this produce a lot of irrelevant clutter in the log, it is
factually incorrect, as misaligned runtime regions are actually allowed
by the EFI spec as long as they don't require conflicting memory types
within the same 64k page.
So let's drop the warning, and tweak the code so that we
- take both the start and end of the region into account when checking
for misalignment
- only revert to RWX mappings for non-code regions if misaligned code
regions are also known to exist.
Cc: <stable@vger.kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Even after commit 89fd4a1df8 ("riscv: jump_label: mark arguments as
const to satisfy asm constraints"), building with CC_OPTIMIZE_FOR_SIZE
+ LLVM=1 can reproduce below build error:
CC arch/riscv/kernel/vdso/vgettimeofday.o
In file included from <built-in>:4:
In file included from lib/vdso/gettimeofday.c:5:
In file included from include/vdso/datapage.h:17:
In file included from include/vdso/processor.h:10:
In file included from arch/riscv/include/asm/vdso/processor.h:7:
In file included from include/linux/jump_label.h:112:
arch/riscv/include/asm/jump_label.h:42:3: error:
invalid operand for inline asm constraint 'i'
" .option push \n\t"
^
1 error generated.
I think the problem is when "-Os" is passed as CFLAGS, it's removed by
"CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os" which is
introduced in commit e05d57dcb8 ("riscv: Fixup __vdso_gettimeofday
broke dynamic ftrace"), thus no optimization at all for vgettimeofday.c
arm64 does remove "-Os" as well, but it forces "-O2" after removing
"-Os".
I compared the generated vgettimeofday.o with "-O2" and "-Os",
I think no big performance difference. So let's tell the kbuild not
to remove "-Os" rather than follow arm64 style.
vdso related performance can be improved a lot when building kernel with
CC_OPTIMIZE_FOR_SIZE after this commit, ("-Os" VS no optimization)
Fixes: e05d57dcb8 ("riscv: Fixup __vdso_gettimeofday broke dynamic ftrace")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221031182943.2453-1-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Mike Galbraith reported the following against an old fork of preempt-rt
but the same issue also applies to the current preempt-rt tree.
BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: systemd
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
Preemption disabled at:
fpu_clone
CPU: 6 PID: 1 Comm: systemd Tainted: G E (unreleased)
Call Trace:
<TASK>
dump_stack_lvl
? fpu_clone
__might_resched
rt_spin_lock
fpu_clone
? copy_thread
? copy_process
? shmem_alloc_inode
? kmem_cache_alloc
? kernel_clone
? __do_sys_clone
? do_syscall_64
? __x64_sys_rt_sigprocmask
? syscall_exit_to_user_mode
? do_syscall_64
? syscall_exit_to_user_mode
? do_syscall_64
? syscall_exit_to_user_mode
? do_syscall_64
? exc_page_fault
? entry_SYSCALL_64_after_hwframe
</TASK>
Mike says:
The splat comes from fpu_inherit_perms() being called under fpregs_lock(),
and us reaching the spin_lock_irq() therein due to fpu_state_size_dynamic()
returning true despite static key __fpu_state_size_dynamic having never
been enabled.
Mike's assessment looks correct. fpregs_lock on a PREEMPT_RT kernel disables
preemption so calling spin_lock_irq() in fpu_inherit_perms() is unsafe. This
problem exists since commit
9e798e9aa1 ("x86/fpu: Prepare fpu_clone() for dynamically enabled features").
Even though the original bug report should not have enabled the paths at
all, the bug still exists.
fpregs_lock is necessary when editing the FPU registers or a task's FP
state but it is not necessary for fpu_inherit_perms(). The only write
of any FP state in fpu_inherit_perms() is for the new child which is
not running yet and cannot context switch or be borrowed by a kernel
thread yet. Hence, fpregs_lock is not protecting anything in the new
child until clone() completes and can be dropped earlier. The siglock
still needs to be acquired by fpu_inherit_perms() as the read of the
parent's permissions has to be serialised.
[ bp: Cleanup splat. ]
Fixes: 9e798e9aa1 ("x86/fpu: Prepare fpu_clone() for dynamically enabled features")
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221110124400.zgymc2lnwqjukgfh@techsingularity.net
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Merge tag 'kvm-s390-master-6.1-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
A PCI allocation fix and a PV clock fix.
The AMD PerfMonV2 specification allows for a maximum of 16 GP counters,
but currently only 6 pairs of MSRs are accepted by KVM.
While AMD64_NUM_COUNTERS_CORE is already equal to 6, increasing without
adjusting msrs_to_save_all[] could result in out-of-bounds accesses.
Therefore introduce a macro (named KVM_AMD_PMC_MAX_GENERIC) to
refer to the number of counters supported by KVM.
Signed-off-by: Like Xu <likexu@tencent.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20220919091008.60695-3-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
