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218,244 commits

Author SHA1 Message Date
Linus Torvalds
e4f7900095 powerpc fixes for 6.8 #5
- Fix IOMMU table initialisation when doing kdump over SR-IOV.
 
  - Fix incorrect RTAS function name for resetting TCE tables.
 
  - Fix fpu_signal selftest failures since a recent change.
 
 Thanks to: Gaurav Batra, Nathan Lynch.
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Merge tag 'powerpc-6.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix IOMMU table initialisation when doing kdump over SR-IOV

 - Fix incorrect RTAS function name for resetting TCE tables

 - Fix fpu_signal selftest failures since a recent change

Thanks to Gaurav Batra and Nathan Lynch.

* tag 'powerpc-6.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  selftests/powerpc: Fix fpu_signal failures
  powerpc/rtas: use correct function name for resetting TCE tables
  powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV
2024-03-03 09:47:19 -08:00
Linus Torvalds
73d35f8335 - Do not reserve SETUP_RNG_SEED setup data in the e820 map as it should
be used by kexec only
 
 - Make sure MKTME feature detection happens at an earlier time in the
   boot process so that the physical address size supported by the CPU is
   properly corrected and MTRR masks are programmed properly, leading to
   TDX systems booting without disable_mtrr_cleanup on the cmdline
 
 - Make sure the different address sizes supported by the CPU are read
   out as early as possible
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Merge tag 'x86_urgent_for_v6.8_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Do not reserve SETUP_RNG_SEED setup data in the e820 map as it should
   be used by kexec only

 - Make sure MKTME feature detection happens at an earlier time in the
   boot process so that the physical address size supported by the CPU
   is properly corrected and MTRR masks are programmed properly, leading
   to TDX systems booting without disable_mtrr_cleanup on the cmdline

 - Make sure the different address sizes supported by the CPU are read
   out as early as possible

* tag 'x86_urgent_for_v6.8_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/e820: Don't reserve SETUP_RNG_SEED in e820
  x86/cpu/intel: Detect TME keyid bits before setting MTRR mask registers
  x86/cpu: Allow reducing x86_phys_bits during early_identify_cpu()
2024-03-03 09:43:03 -08:00
Linus Torvalds
d17468c6f1 RISC-V Fixes for 6.8-rc7
* A fix for detecting ".option arch" support on not-yet-released LLVM
   builds.
 * A fix for a missing TLB flush when modifying non-leaf PTEs.
 * A handufl of fixes for T-Head custom extensions.
 * A fix for systems with the legacy PMU, that manifests as a crash on
   kernels built without SBI PMU support.
 * A fix for systems that clear *envcfg on suspend, which manifests as
   cbo.zero trapping after resume.
 * A pair of fixes for Svnapot systems, including removing Svnapot
   support for huge vmalloc/vmap regions.
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Merge tag 'riscv-for-linus-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - detect ".option arch" support on not-yet-released LLVM builds

 - fix missing TLB flush when modifying non-leaf PTEs

 - fixes for T-Head custom extensions

 - fix for systems with the legacy PMU, that manifests as a crash on
   kernels built without SBI PMU support

 - fix for systems that clear *envcfg on suspend, which manifests as
   cbo.zero trapping after resume

 - fixes for Svnapot systems, including removing Svnapot support for
   huge vmalloc/vmap regions

* tag 'riscv-for-linus-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: Sparse-Memory/vmemmap out-of-bounds fix
  riscv: Fix pte_leaf_size() for NAPOT
  Revert "riscv: mm: support Svnapot in huge vmap"
  riscv: Save/restore envcfg CSR during CPU suspend
  riscv: Add a custom ISA extension for the [ms]envcfg CSR
  riscv: Fix enabling cbo.zero when running in M-mode
  perf: RISCV: Fix panic on pmu overflow handler
  MAINTAINERS: Update SiFive driver maintainers
  drivers: perf: ctr_get_width function for legacy is not defined
  drivers: perf: added capabilities for legacy PMU
  RISC-V: Ignore V from the riscv,isa DT property on older T-Head CPUs
  riscv: Fix build error if !CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
  riscv: mm: fix NOCACHE_THEAD does not set bit[61] correctly
  riscv: add CALLER_ADDRx support
  RISC-V: Drop invalid test from CONFIG_AS_HAS_OPTION_ARCH
  kbuild: Add -Wa,--fatal-warnings to as-instr invocation
  riscv: tlb: fix __p*d_free_tlb()
2024-03-01 12:44:33 -08:00
Jiri Bohac
7fd817c906 x86/e820: Don't reserve SETUP_RNG_SEED in e820
SETUP_RNG_SEED in setup_data is supplied by kexec and should
not be reserved in the e820 map.

Doing so reserves 16 bytes of RAM when booting with kexec.
(16 bytes because data->len is zeroed by parse_setup_data so only
sizeof(setup_data) is reserved.)

When kexec is used repeatedly, each boot adds two entries in the
kexec-provided e820 map as the 16-byte range splits a larger
range of usable memory. Eventually all of the 128 available entries
get used up. The next split will result in losing usable memory
as the new entries cannot be added to the e820 map.

Fixes: 68b8e9713c ("x86/setup: Use rng seeds from setup_data")
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/ZbmOjKnARGiaYBd5@dwarf.suse.cz
2024-03-01 10:27:20 -08:00
Dimitris Vlachos
a11dd49dcb
riscv: Sparse-Memory/vmemmap out-of-bounds fix
Offset vmemmap so that the first page of vmemmap will be mapped
to the first page of physical memory in order to ensure that
vmemmap’s bounds will be respected during
pfn_to_page()/page_to_pfn() operations.
The conversion macros will produce correct SV39/48/57 addresses
for every possible/valid DRAM_BASE inside the physical memory limits.

v2:Address Alex's comments

Suggested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Dimitris Vlachos <dvlachos@ics.forth.gr>
Reported-by: Dimitris Vlachos <dvlachos@ics.forth.gr>
Closes: https://lore.kernel.org/linux-riscv/20240202135030.42265-1-csd4492@csd.uoc.gr
Fixes: d95f1a542c ("RISC-V: Implement sparsemem")
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240229191723.32779-1-dvlachos@ics.forth.gr
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-29 12:24:31 -08:00
Palmer Dabbelt
2b8acd7154
Merge patch series "NAPOT Fixes"
Alexandre Ghiti <alexghiti@rivosinc.com> says:

This contains 2 fixes for NAPOT: patch 1 disables the use of NAPOT
mapping for vmalloc/vmap and patch 2 implements pte_leaf_size() to
report NAPOT size.

* b4-shazam-merge:
  riscv: Fix pte_leaf_size() for NAPOT
  Revert "riscv: mm: support Svnapot in huge vmap"

Link: https://lore.kernel.org/r/20240227205016.121901-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-29 10:21:25 -08:00
Alexandre Ghiti
e0fe5ab419
riscv: Fix pte_leaf_size() for NAPOT
pte_leaf_size() must be reimplemented to add support for NAPOT mappings.

Fixes: 82a1a1f3bf ("riscv: mm: support Svnapot in hugetlb page")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240227205016.121901-3-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-29 10:21:23 -08:00
Alexandre Ghiti
16ab4646c9
Revert "riscv: mm: support Svnapot in huge vmap"
This reverts commit ce173474cf.

We cannot correctly deal with NAPOT mappings in vmalloc/vmap because if
some part of a NAPOT mapping is unmapped, the remaining mapping is not
updated accordingly. For example:

ptr = vmalloc_huge(64 * 1024, GFP_KERNEL);
vunmap_range((unsigned long)(ptr + PAGE_SIZE),
	     (unsigned long)(ptr + 64 * 1024));

leads to the following kernel page table dump:

0xffff8f8000ef0000-0xffff8f8000ef1000    0x00000001033c0000         4K PTE N   ..     ..   D A G . . W R V

Meaning the first entry which was not unmapped still has the N bit set,
which, if accessed first and cached in the TLB, could allow access to the
unmapped range.

That's because the logic to break the NAPOT mapping does not exist and
likely won't. Indeed, to break a NAPOT mapping, we first have to clear
the whole mapping, flush the TLB and then set the new mapping ("break-
before-make" equivalent). That works fine in userspace since we can handle
any pagefault occurring on the remaining mapping but we can't handle a kernel
pagefault on such mapping.

So fix this by reverting the commit that introduced the vmap/vmalloc
support.

Fixes: ce173474cf ("riscv: mm: support Svnapot in huge vmap")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240227205016.121901-2-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-29 10:21:22 -08:00
Palmer Dabbelt
e2b6bc28ec
Merge patch series "riscv: cbo.zero fixes"
Samuel Holland <samuel.holland@sifive.com> says:

This series fixes a couple of issues related to using the cbo.zero
instruction in userspace. The first patch fixes a bug where the wrong
enable bit gets set if the kernel is running in M-mode. The remaining
patches fix a bug where the enable bit gets reset to its default value
after a nonretentive idle state. I have hardware which reproduces this:

Before this series:
  $ tools/testing/selftests/riscv/hwprobe/cbo
  TAP version 13
  1..3
  ok 1 Zicboz block size
  # Zicboz block size: 64
  Illegal instruction

After applying this series:
  $ tools/testing/selftests/riscv/hwprobe/cbo
  TAP version 13
  1..3
  ok 1 Zicboz block size
  # Zicboz block size: 64
  ok 2 cbo.zero
  ok 3 cbo.zero check
  # Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0

* b4-shazam-merge:
  riscv: Save/restore envcfg CSR during CPU suspend
  riscv: Add a custom ISA extension for the [ms]envcfg CSR
  riscv: Fix enabling cbo.zero when running in M-mode

Link: https://lore.kernel.org/r/20240228065559.3434837-1-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-29 10:20:19 -08:00
Samuel Holland
05ab803d1a
riscv: Save/restore envcfg CSR during CPU suspend
The value of the [ms]envcfg CSR is lost when entering a nonretentive
idle state, so the CSR must be rewritten when resuming the CPU.

Cc: <stable@vger.kernel.org> # v6.7+
Fixes: 43c16d51a1 ("RISC-V: Enable cbo.zero in usermode")
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20240228065559.3434837-4-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-29 10:20:18 -08:00
Samuel Holland
4774848fef
riscv: Add a custom ISA extension for the [ms]envcfg CSR
The [ms]envcfg CSR was added in version 1.12 of the RISC-V privileged
ISA (aka S[ms]1p12). However, bits in this CSR are defined by several
other extensions which may be implemented separately from any particular
version of the privileged ISA (for example, some unrelated errata may
prevent an implementation from claiming conformance with Ss1p12). As a
result, Linux cannot simply use the privileged ISA version to determine
if the CSR is present. It must also check if any of these other
extensions are implemented. It also cannot probe the existence of the
CSR at runtime, because Linux does not require Sstrict, so (in the
absence of additional information) it cannot know if a CSR at that
address is [ms]envcfg or part of some non-conforming vendor extension.

Since there are several standard extensions that imply the existence of
the [ms]envcfg CSR, it becomes unwieldy to check for all of them
wherever the CSR is accessed. Instead, define a custom Xlinuxenvcfg ISA
extension bit that is implied by the other extensions and denotes that
the CSR exists as defined in the privileged ISA, containing at least one
of the fields common between menvcfg and senvcfg.

This extension does not need to be parsed from the devicetree or ISA
string because it can only be implemented as a subset of some other
standard extension.

Cc: <stable@vger.kernel.org> # v6.7+
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20240228065559.3434837-3-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-29 10:20:17 -08:00
Samuel Holland
3fb3f7164e
riscv: Fix enabling cbo.zero when running in M-mode
When the kernel is running in M-mode, the CBZE bit must be set in the
menvcfg CSR, not in senvcfg.

Cc: <stable@vger.kernel.org>
Fixes: 43c16d51a1 ("RISC-V: Enable cbo.zero in usermode")
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240228065559.3434837-2-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-29 10:20:16 -08:00
Linus Torvalds
e326df53af This push fixes a regression in lskcipher and an out-of-bound
access in arm64/neonbs.
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Merge tag 'v6.8-p5' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This fixes a regression in lskcipher and an out-of-bound access
  in arm64/neonbs"

* tag 'v6.8-p5' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: arm64/neonbs - fix out-of-bounds access on short input
  crypto: lskcipher - Copy IV in lskcipher glue code always
2024-02-28 09:30:26 -08:00
Paolo Bonzini
6890cb1ace x86/cpu/intel: Detect TME keyid bits before setting MTRR mask registers
MKTME repurposes the high bit of physical address to key id for encryption
key and, even though MAXPHYADDR in CPUID[0x80000008] remains the same,
the valid bits in the MTRR mask register are based on the reduced number
of physical address bits.

detect_tme() in arch/x86/kernel/cpu/intel.c detects TME and subtracts
it from the total usable physical bits, but it is called too late.
Move the call to early_init_intel() so that it is called in setup_arch(),
before MTRRs are setup.

This fixes boot on TDX-enabled systems, which until now only worked with
"disable_mtrr_cleanup".  Without the patch, the values written to the
MTRRs mask registers were 52-bit wide (e.g. 0x000fffff_80000800) and
the writes failed; with the patch, the values are 46-bit wide, which
matches the reduced MAXPHYADDR that is shown in /proc/cpuinfo.

Reported-by: Zixi Chen <zixchen@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc:stable@vger.kernel.org
Link: https://lore.kernel.org/all/20240131230902.1867092-3-pbonzini%40redhat.com
2024-02-26 08:16:16 -08:00
Paolo Bonzini
9a458198eb x86/cpu: Allow reducing x86_phys_bits during early_identify_cpu()
In commit fbf6449f84 ("x86/sev-es: Set x86_virt_bits to the correct
value straight away, instead of a two-phase approach"), the initialization
of c->x86_phys_bits was moved after this_cpu->c_early_init(c).  This is
incorrect because early_init_amd() expected to be able to reduce the
value according to the contents of CPUID leaf 0x8000001f.

Fortunately, the bug was negated by init_amd()'s call to early_init_amd(),
which does reduce x86_phys_bits in the end.  However, this is very
late in the boot process and, most notably, the wrong value is used for
x86_phys_bits when setting up MTRRs.

To fix this, call get_cpu_address_sizes() as soon as X86_FEATURE_CPUID is
set/cleared, and c->extended_cpuid_level is retrieved.

Fixes: fbf6449f84 ("x86/sev-es: Set x86_virt_bits to the correct value straight away, instead of a two-phase approach")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc:stable@vger.kernel.org
Link: https://lore.kernel.org/all/20240131230902.1867092-2-pbonzini%40redhat.com
2024-02-26 08:16:15 -08:00
Linus Torvalds
1eee4ef38c - Make sure clearing CPU buffers using VERW happens at the latest possible
point in the return-to-userspace path, otherwise memory accesses after
   the VERW execution could cause data to land in CPU buffers again
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Merge tag 'x86_urgent_for_v6.8_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Make sure clearing CPU buffers using VERW happens at the latest
   possible point in the return-to-userspace path, otherwise memory
   accesses after the VERW execution could cause data to land in CPU
   buffers again

* tag 'x86_urgent_for_v6.8_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  KVM/VMX: Move VERW closer to VMentry for MDS mitigation
  KVM/VMX: Use BT+JNC, i.e. EFLAGS.CF to select VMRESUME vs. VMLAUNCH
  x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key
  x86/entry_32: Add VERW just before userspace transition
  x86/entry_64: Add VERW just before userspace transition
  x86/bugs: Add asm helpers for executing VERW
2024-02-25 10:22:21 -08:00
Linus Torvalds
ab0a97cffa powerpc fixes for 6.8 #4
- Fix a crash when hot adding a PCI device to an LPAR since recent changes.
 
  - Fix nested KVM level-2 guest reboot failure due to empty 'arch_compat'.
 
 Thanks to: Amit Machhiwal, Aneesh Kumar K.V (IBM), Brian King, Gaurav Batra,
 Vaibhav Jain.
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Merge tag 'powerpc-6.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix a crash when hot adding a PCI device to an LPAR since
   recent changes

 - Fix nested KVM level-2 guest reboot failure due to empty
   'arch_compat'

Thanks to Amit Machhiwal, Aneesh Kumar K.V (IBM), Brian King, Gaurav
Batra, and Vaibhav Jain.

* tag 'powerpc-6.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  KVM: PPC: Book3S HV: Fix L2 guest reboot failure due to empty 'arch_compat'
  powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller
2024-02-24 16:49:51 -08:00
Linus Torvalds
ac389bc0ca cxl fixes for 6.8-rc6
- Fix NUMA initialization from ACPI CEDT.CFMWS
 
 - Fix region assembly failures due to async init order
 
 - Fix / simplify export of qos_class information
 
 - Fix cxl_acpi initialization vs single-window-init failures
 
 - Fix handling of repeated 'pci_channel_io_frozen' notifications
 
 - Workaround platforms that violate host-physical-address ==
   system-physical address assumptions
 
 - Defer CXL CPER notification handling to v6.9
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Merge tag 'cxl-fixes-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull cxl fixes from Dan Williams:
 "A collection of significant fixes for the CXL subsystem.

  The largest change in this set, that bordered on "new development", is
  the fix for the fact that the location of the new qos_class attribute
  did not match the Documentation. The fix ends up deleting more code
  than it added, and it has a new unit test to backstop basic errors in
  this interface going forward. So the "red-diff" and unit test saved
  the "rip it out and try again" response.

  In contrast, the new notification path for firmware reported CXL
  errors (CXL CPER notifications) has a locking context bug that can not
  be fixed with a red-diff. Given where the release cycle stands, it is
  not comfortable to squeeze in that fix in these waning days. So, that
  receives the "back it out and try again later" treatment.

  There is a regression fix in the code that establishes memory NUMA
  nodes for platform CXL regions. That has an ack from x86 folks. There
  are a couple more fixups for Linux to understand (reassemble) CXL
  regions instantiated by platform firmware. The policy around platforms
  that do not match host-physical-address with system-physical-address
  (i.e. systems that have an address translation mechanism between the
  address range reported in the ACPI CEDT.CFMWS and endpoint decoders)
  has been softened to abort driver load rather than teardown the memory
  range (can cause system hangs). Lastly, there is a robustness /
  regression fix for cases where the driver would previously continue in
  the face of error, and a fixup for PCI error notification handling.

  Summary:

   - Fix NUMA initialization from ACPI CEDT.CFMWS

   - Fix region assembly failures due to async init order

   - Fix / simplify export of qos_class information

   - Fix cxl_acpi initialization vs single-window-init failures

   - Fix handling of repeated 'pci_channel_io_frozen' notifications

   - Workaround platforms that violate host-physical-address ==
     system-physical address assumptions

   - Defer CXL CPER notification handling to v6.9"

* tag 'cxl-fixes-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
  cxl/acpi: Fix load failures due to single window creation failure
  acpi/ghes: Remove CXL CPER notifications
  cxl/pci: Fix disabling memory if DVSEC CXL Range does not match a CFMWS window
  cxl/test: Add support for qos_class checking
  cxl: Fix sysfs export of qos_class for memdev
  cxl: Remove unnecessary type cast in cxl_qos_class_verify()
  cxl: Change 'struct cxl_memdev_state' *_perf_list to single 'struct cxl_dpa_perf'
  cxl/region: Allow out of order assembly of autodiscovered regions
  cxl/region: Handle endpoint decoders in cxl_region_find_decoder()
  x86/numa: Fix the sort compare func used in numa_fill_memblks()
  x86/numa: Fix the address overlap check in numa_fill_memblks()
  cxl/pci: Skip to handle RAS errors if CXL.mem device is detached
2024-02-24 15:53:40 -08:00
Linus Torvalds
c6a597fcc7 LoongArch fixes for v6.8-rc6
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Merge tag 'loongarch-fixes-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
 "Fix two cpu-hotplug issues, fix the init sequence about FDT system,
  fix the coding style of dts, and fix the wrong CPUCFG ID handling of
  KVM"

* tag 'loongarch-fixes-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: KVM: Streamline kvm_check_cpucfg() and improve comments
  LoongArch: KVM: Rename _kvm_get_cpucfg() to _kvm_get_cpucfg_mask()
  LoongArch: KVM: Fix input validation of _kvm_get_cpucfg() & kvm_check_cpucfg()
  LoongArch: dts: Minor whitespace cleanup
  LoongArch: Call early_init_fdt_scan_reserved_mem() earlier
  LoongArch: Update cpu_sibling_map when disabling nonboot CPUs
  LoongArch: Disable IRQ before init_fn() for nonboot CPUs
2024-02-24 09:36:35 -08:00
Ard Biesheuvel
1c0cf6d196 crypto: arm64/neonbs - fix out-of-bounds access on short input
The bit-sliced implementation of AES-CTR operates on blocks of 128
bytes, and will fall back to the plain NEON version for tail blocks or
inputs that are shorter than 128 bytes to begin with.

It will call straight into the plain NEON asm helper, which performs all
memory accesses in granules of 16 bytes (the size of a NEON register).
For this reason, the associated plain NEON glue code will copy inputs
shorter than 16 bytes into a temporary buffer, given that this is a rare
occurrence and it is not worth the effort to work around this in the asm
code.

The fallback from the bit-sliced NEON version fails to take this into
account, potentially resulting in out-of-bounds accesses. So clone the
same workaround, and use a temp buffer for short in/outputs.

Fixes: fc074e1300 ("crypto: arm64/aes-neonbs-ctr - fallback to plain NEON for final chunk")
Cc: <stable@vger.kernel.org>
Reported-by: syzbot+f1ceaa1a09ab891e1934@syzkaller.appspotmail.com
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2024-02-24 08:37:24 +08:00
Linus Torvalds
603c04e27c parisc architecture fixes for kernel v6.8-rc6:
- Fix CPU hotplug
 - Fix unaligned accesses and faults in stack unwinder
 - Fix potential build errors by always including asm-generic/kprobes.h
 - Fix build bug by add missing CONFIG_DYNAMIC_FTRACE check
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Merge tag 'parisc-for-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc architecture fixes from Helge Deller:
 "Fixes CPU hotplug, the parisc stack unwinder and two possible build
  errors in kprobes and ftrace area:

   - Fix CPU hotplug

   - Fix unaligned accesses and faults in stack unwinder

   - Fix potential build errors by always including asm-generic/kprobes.h

   - Fix build bug by add missing CONFIG_DYNAMIC_FTRACE check"

* tag 'parisc-for-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix stack unwinder
  parisc/kprobes: always include asm-generic/kprobes.h
  parisc/ftrace: add missing CONFIG_DYNAMIC_FTRACE check
  Revert "parisc: Only list existing CPUs in cpu_possible_mask"
2024-02-23 10:40:20 -08:00
Linus Torvalds
e44baca779 Arm and RISC-V SoC fixes for 6.8, part 2
The Rockchip and IMX8 platforms get a number of fixes for dts files in
 order to address some misconfigurations, including a regression for
 USB-C support on some boards.
 
 The other dts fixes are part of a series by Rob Herring to clean up
 another class of dtc compiler warnings across all platforms, with
 a few others helping out as well. With this, we can enable the warning
 for the coming merge window without introducing regressions.
 
 Conor Dooley has collected fixes for RISC-V platforms, both for the
 dts files and for platofrm specific drivers.
 
 The ep93xx platform gets a regression for for its gpio descriptors.
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Merge tag 'arm-fixes-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull arm and RISC-V SoC fixes from Arnd Bergmann:
 "The Rockchip and IMX8 platforms get a number of fixes for dts files in
  order to address some misconfigurations, including a regression for
  USB-C support on some boards.

  The other dts fixes are part of a series by Rob Herring to clean up
  another class of dtc compiler warnings across all platforms, with a
  few others helping out as well. With this, we can enable the warning
  for the coming merge window without introducing regressions.

  Conor Dooley has collected fixes for RISC-V platforms, both for the
  dts files and for platofrm specific drivers.

  The ep93xx platform gets a regression for for its gpio descriptors"

* tag 'arm-fixes-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (28 commits)
  ARM: dts: renesas: rcar-gen2: Add missing #interrupt-cells to DA9063 nodes
  cache: ax45mp_cache: Align end size to cache boundary in ax45mp_dma_cache_wback()
  arm64: dts: qcom: Fix interrupt-map cell sizes
  arm: dts: Fix dtc interrupt_map warnings
  arm64: dts: Fix dtc interrupt_provider warnings
  arm: dts: Fix dtc interrupt_provider warnings
  arm64: dts: freescale: Disable interrupt_map check
  ARM: ep93xx: Add terminator to gpiod_lookup_table
  riscv: dts: sifive: add missing #interrupt-cells to pmic
  arm64: dts: rockchip: Correct Indiedroid Nova GPIO Names
  arm64: dts: rockchip: Drop interrupts property from rk3328 pwm-rockchip node
  arm64: dts: rockchip: set num-cs property for spi on px30
  arm64: dts: rockchip: minor rk3588 whitespace cleanup
  riscv: dts: starfive: replace underscores in node names
  bus: imx-weim: fix valid range check
  Revert "arm64: dts: imx8mn-var-som-symphony: Describe the USB-C connector"
  Revert "arm64: dts: imx8mp-dhcom-pdk3: Describe the USB-C connector"
  arm64: dts: tqma8mpql: fix audio codec iov-supply
  arm64: dts: rockchip: drop unneeded status from rk3588-jaguar gpio-leds
  ARM: dts: rockchip: Drop interrupts property from pwm-rockchip nodes
  ...
2024-02-23 10:31:28 -08:00
Linus Torvalds
86f01602a4 arm64 fixes for -rc6
- Revert fix to jump label asm constraints, as it regresses the build
   with some GCC 5.5 toolchains.
 
 - Restore SME control registers when resuming from suspend
 
 - Fix incorrect filter definition in CXL PMU driver
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "A simple fix to a definition in the CXL PMU driver, a couple of
  patches to restore SME control registers on the resume path (since
  Arm's fast model now clears them) and a revert for our jump label asm
  constraints after Geert noticed they broke the build with GCC 5.5.

  There was then the ensuing discussion about raising the minimum GCC
  (and corresponding binutils) versions at [1], but for now we'll keep
  things working as they were until that goes ahead.

   - Revert fix to jump label asm constraints, as it regresses the build
     with some GCC 5.5 toolchains.

   - Restore SME control registers when resuming from suspend

   - Fix incorrect filter definition in CXL PMU driver"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64/sme: Restore SMCR_EL1.EZT0 on exit from suspend
  arm64/sme: Restore SME registers on exit from suspend
  Revert "arm64: jump_label: use constraints "Si" instead of "i""
  perf: CXL: fix CPMU filter value mask length
2024-02-23 10:26:43 -08:00
Linus Torvalds
5efa18e862 s390 fixes for 6.8-rc6
- Fix invalid -EBUSY on ccw_device_start() which can lead to failing
   device initialization
 
 - Add missing multiplication by 8 in __iowrite64_copy() to get the
   correct byte length before calling zpci_memcpy_toio()
 
 - Various config updates
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Merge tag 's390-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Heiko Carstens:

 - Fix invalid -EBUSY on ccw_device_start() which can lead to failing
   device initialization

 - Add missing multiplication by 8 in __iowrite64_copy() to get the
   correct byte length before calling zpci_memcpy_toio()

 - Various config updates

* tag 's390-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cio: fix invalid -EBUSY on ccw_device_start
  s390: use the correct count for __iowrite64_copy()
  s390/configs: update default configurations
  s390/configs: enable INIT_STACK_ALL_ZERO in all configurations
  s390/configs: provide compat topic configuration target
2024-02-23 09:54:13 -08:00
Linus Torvalds
06b7ef70b1 drm fixes for 6.8-rc6
fbdev:
 - fix sparc undefined reference
 
 syncobj:
 - fix sync obj fence waiting
 - handle NULL fence in syncobj eventfd code
 
 ttm:
 - fix invalid free
 
 buddy:
 - fix list handling
 - fix 32-bit build
 
 meson:
 - don't remove bridges from other drivers
 
 nouveau:
 - fix build warnings
 - add two minor info parameters
 - add a Kconfig to allow GSP by default on some GPUs
 
 ivpu:
 - allow fw to do initial tile config
 
 i915:
 - fix TV mode
 
 amdgpu:
 - Suspend/resume fixes
 - Backlight error fix
 - DCN 3.5 fixes
 - Misc fixes
 
 xe:
 - Remove support for persistent exec_queues
 - Drop a reduntant sysfs newline printout
 - A three-patch fix for a VM_BIND rebind optimization path
 - Fix a modpost warning on an xe KUNIT module
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Merge tag 'drm-fixes-2024-02-23' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "This is the weekly drm fixes. Non-drivers there is a fbdev/sparc fix,
  syncobj, ttm and buddy fixes.

  On the driver side, ivpu, meson, i915 have a small fix each. Then
  amdgpu and xe have a bunch. Nouveau has some minor uapi additions to
  give userspace some useful info along with a Kconfig change to allow
  the new GSP firmware paths to be used by default on the GPUs it
  supports.

  Seems about the usual amount for this time of release cycle.

  fbdev:
   - fix sparc undefined reference

  syncobj:
   - fix sync obj fence waiting
   - handle NULL fence in syncobj eventfd code

  ttm:
   - fix invalid free

  buddy:
   - fix list handling
   - fix 32-bit build

  meson:
   - don't remove bridges from other drivers

  nouveau:
   - fix build warnings
   - add two minor info parameters
   - add a Kconfig to allow GSP by default on some GPUs

  ivpu:
   - allow fw to do initial tile config

  i915:
   - fix TV mode

  amdgpu:
   - Suspend/resume fixes
   - Backlight error fix
   - DCN 3.5 fixes
   - Misc fixes

  xe:
   - Remove support for persistent exec_queues
   - Drop a reduntant sysfs newline printout
   - A three-patch fix for a VM_BIND rebind optimization path
   - Fix a modpost warning on an xe KUNIT module"

* tag 'drm-fixes-2024-02-23' of git://anongit.freedesktop.org/drm/drm: (27 commits)
  nouveau: add an ioctl to report vram usage
  nouveau: add an ioctl to return vram bar size.
  nouveau/gsp: add kconfig option to enable GSP paths by default
  drm/amdgpu: Fix the runtime resume failure issue
  drm/amd/display: fix null-pointer dereference on edid reading
  drm/amd/display: Fix memory leak in dm_sw_fini()
  drm/amd/display: fix input states translation error for dcn35 & dcn351
  drm/amd/display: Fix potential null pointer dereference in dc_dmub_srv
  drm/amd/display: Only allow dig mapping to pwrseq in new asic
  drm/amd/display: adjust few initialization order in dm
  drm/syncobj: handle NULL fence in syncobj_eventfd_entry_func
  drm/syncobj: call drm_syncobj_fence_add_wait when WAIT_AVAILABLE flag is set
  drm/ttm: Fix an invalid freeing on already freed page in error path
  sparc: Fix undefined reference to fb_is_primary_device
  drm/xe: Fix modpost warning on xe_mocs kunit module
  drm/xe/xe_gt_idle: Drop redundant newline in name
  drm/xe: Return 2MB page size for compact 64k PTEs
  drm/xe: Add XE_VMA_PTE_64K VMA flag
  drm/xe: Fix xe_vma_set_pte_size
  drm/xe/uapi: Remove support for persistent exec_queues
  ...
2024-02-23 09:17:47 -08:00
Conor Dooley
d82f32202e
RISC-V: Ignore V from the riscv,isa DT property on older T-Head CPUs
Before attempting to support the pre-ratification version of vector
found on older T-Head CPUs, disallow "v" in riscv,isa on these
platforms. The deprecated property has no clear way to communicate
the specific version of vector that is supported and much of the vendor
provided software puts "v" in the isa string. riscv,isa-extensions
should be used instead. This should not be too much of a burden for
these systems, as the vendor shipped devicetrees and firmware do not
work with a mainline kernel and will require updating.

We can limit this restriction to only ignore v in riscv,isa on CPUs
that report T-Head's vendor ID and a zero marchid. Newer T-Head CPUs
that support the ratified version of vector should report non-zero
marchid, according to Guo Ren [1].

Link: https://lore.kernel.org/linux-riscv/CAJF2gTRy5eK73=d6s7CVy9m9pB8p4rAoMHM3cZFwzg=AuF7TDA@mail.gmail.com/ [1]
Fixes: dc6667a4e7 ("riscv: Extending cpufeature.c to detect V-extension")
Co-developed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20240223-tidings-shabby-607f086cb4d7@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-23 09:01:16 -08:00
Arnd Bergmann
dcb8e53e33 Renesas fixes for v6.8
- Add missing #interrupt-cells to DA9063 nodes.
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Merge tag 'renesas-fixes-for-v6.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/fixes

Renesas fixes for v6.8

  - Add missing #interrupt-cells to DA9063 nodes.

* tag 'renesas-fixes-for-v6.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
  ARM: dts: renesas: rcar-gen2: Add missing #interrupt-cells to DA9063 nodes

Link: https://lore.kernel.org/r/cover.1708597150.git.geert+renesas@glider.be
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2024-02-23 13:54:37 +01:00
Arnd Bergmann
4bd5b4c2eb RISC-V Devicetree fixes for v6.8-rc6
Two fixes for W=2 issues in devicetrees, which should constitute fixes
 for all reasonable-to-fix W=2 problems on RISC-V. The others are caused
 by standard USB and MMC property names containing underscores that are
 not likely to ever change.
 
 Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Merge tag 'riscv-dt-fixes-for-v6.8-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into arm/fixes

RISC-V Devicetree fixes for v6.8-rc6

Two fixes for W=2 issues in devicetrees, which should constitute fixes
for all reasonable-to-fix W=2 problems on RISC-V. The others are caused
by standard USB and MMC property names containing underscores that are
not likely to ever change.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

* tag 'riscv-dt-fixes-for-v6.8-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux:
  riscv: dts: sifive: add missing #interrupt-cells to pmic
  riscv: dts: starfive: replace underscores in node names

Link: https://lore.kernel.org/r/20240221-foil-glade-09dbf1aa3fe2@spud
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2024-02-23 13:54:07 +01:00
WANG Xuerui
f0f5c4894f LoongArch: KVM: Streamline kvm_check_cpucfg() and improve comments
All the checks currently done in kvm_check_cpucfg can be realized with
early returns, so just do that to avoid extra cognitive burden related
to the return value handling.

While at it, clean up comments of _kvm_get_cpucfg_mask() and
kvm_check_cpucfg(), by removing comments that are merely restatement of
the code nearby, and paraphrasing the rest so they read more natural for
English speakers (that likely are not familiar with the actual Chinese-
influenced grammar).

No functional changes intended.

Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-02-23 14:36:31 +08:00
WANG Xuerui
ec83f39d2b LoongArch: KVM: Rename _kvm_get_cpucfg() to _kvm_get_cpucfg_mask()
The function is not actually a getter of guest CPUCFG, but rather
validation of the input CPUCFG ID plus information about the supported
bit flags of that CPUCFG leaf. So rename it to avoid confusion.

Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-02-23 14:36:31 +08:00
WANG Xuerui
179af5751a LoongArch: KVM: Fix input validation of _kvm_get_cpucfg() & kvm_check_cpucfg()
The range check for the CPUCFG ID is wrong (should have been a ||
instead of &&) and useless in effect, so fix the obvious mistake.

Furthermore, the juggling of the temp return value is unnecessary,
because it is semantically equivalent and more readable to just
return at every switch case's end. This is done too to avoid potential
bugs in the future related to the unwanted complexity.

Also, the return value of _kvm_get_cpucfg is meant to be checked, but
this was not done, so bad CPUCFG IDs wrongly fall back to the default
case and 0 is incorrectly returned; check the return value to fix the
UAPI behavior.

While at it, also remove the redundant range check in kvm_check_cpucfg,
because out-of-range CPUCFG IDs are already rejected by the -EINVAL
as returned by _kvm_get_cpucfg().

Fixes: db1ecca22e ("LoongArch: KVM: Add LSX (128bit SIMD) support")
Fixes: 118e10cd89 ("LoongArch: KVM: Add LASX (256bit SIMD) support")
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-02-23 14:36:31 +08:00
Krzysztof Kozlowski
f661ca4078 LoongArch: dts: Minor whitespace cleanup
The DTS code coding style expects exactly one space before '{'
character.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-02-23 14:36:31 +08:00
Huacai Chen
9fa304b9f8 LoongArch: Call early_init_fdt_scan_reserved_mem() earlier
The unflatten_and_copy_device_tree() function contains a call to
memblock_alloc(). This means that memblock is allocating memory before
any of the reserved memory regions are set aside in the arch_mem_init()
function which calls early_init_fdt_scan_reserved_mem(). Therefore,
there is a possibility for memblock to allocate from any of the
reserved memory regions.

Hence, move the call to early_init_fdt_scan_reserved_mem() to be earlier
in the init sequence, so that the reserved memory regions are set aside
before any allocations are done using memblock.

Cc: stable@vger.kernel.org
Fixes: 88d4d957ed ("LoongArch: Add FDT booting support from efi system table")
Signed-off-by: Oreoluwa Babatunde <quic_obabatun@quicinc.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-02-23 14:36:31 +08:00
Huacai Chen
752cd08da3 LoongArch: Update cpu_sibling_map when disabling nonboot CPUs
Update cpu_sibling_map when disabling nonboot CPUs by defining & calling
clear_cpu_sibling_map(), otherwise we get such errors on SMT systems:

jump label: negative count!
WARNING: CPU: 6 PID: 45 at kernel/jump_label.c:263 __static_key_slow_dec_cpuslocked+0xec/0x100
CPU: 6 PID: 45 Comm: cpuhp/6 Not tainted 6.8.0-rc5+ #1340
pc 90000000004c302c ra 90000000004c302c tp 90000001005bc000 sp 90000001005bfd20
a0 000000000000001b a1 900000000224c278 a2 90000001005bfb58 a3 900000000224c280
a4 900000000224c278 a5 90000001005bfb50 a6 0000000000000001 a7 0000000000000001
t0 ce87a4763eb5234a t1 ce87a4763eb5234a t2 0000000000000000 t3 0000000000000000
t4 0000000000000006 t5 0000000000000000 t6 0000000000000064 t7 0000000000001964
t8 000000000009ebf6 u0 9000000001f2a068 s9 0000000000000000 s0 900000000246a2d8
s1 ffffffffffffffff s2 ffffffffffffffff s3 90000000021518c0 s4 0000000000000040
s5 9000000002151058 s6 9000000009828e40 s7 00000000000000b4 s8 0000000000000006
   ra: 90000000004c302c __static_key_slow_dec_cpuslocked+0xec/0x100
  ERA: 90000000004c302c __static_key_slow_dec_cpuslocked+0xec/0x100
 CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
 PRMD: 00000004 (PPLV0 +PIE -PWE)
 EUEN: 00000000 (-FPE -SXE -ASXE -BTE)
 ECFG: 00071c1c (LIE=2-4,10-12 VS=7)
ESTAT: 000c0000 [BRK] (IS= ECode=12 EsubCode=0)
 PRID: 0014d000 (Loongson-64bit, Loongson-3A6000-HV)
CPU: 6 PID: 45 Comm: cpuhp/6 Not tainted 6.8.0-rc5+ #1340
Stack : 0000000000000000 900000000203f258 900000000179afc8 90000001005bc000
        90000001005bf980 0000000000000000 90000001005bf988 9000000001fe0be0
        900000000224c280 900000000224c278 90000001005bf8c0 0000000000000001
        0000000000000001 ce87a4763eb5234a 0000000007f38000 90000001003f8cc0
        0000000000000000 0000000000000006 0000000000000000 4c206e6f73676e6f
        6f4c203a656d616e 000000000009ec99 0000000007f38000 0000000000000000
        900000000214b000 9000000001fe0be0 0000000000000004 0000000000000000
        0000000000000107 0000000000000009 ffffffffffafdabe 00000000000000b4
        0000000000000006 90000000004c302c 9000000000224528 00005555939a0c7c
        00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c
        ...
Call Trace:
[<9000000000224528>] show_stack+0x48/0x1a0
[<900000000179afc8>] dump_stack_lvl+0x78/0xa0
[<9000000000263ed0>] __warn+0x90/0x1a0
[<90000000017419b8>] report_bug+0x1b8/0x280
[<900000000179c564>] do_bp+0x264/0x420
[<90000000004c302c>] __static_key_slow_dec_cpuslocked+0xec/0x100
[<90000000002b4d7c>] sched_cpu_deactivate+0x2fc/0x300
[<9000000000266498>] cpuhp_invoke_callback+0x178/0x8a0
[<9000000000267f70>] cpuhp_thread_fun+0xf0/0x240
[<90000000002a117c>] smpboot_thread_fn+0x1dc/0x2e0
[<900000000029a720>] kthread+0x140/0x160
[<9000000000222288>] ret_from_kernel_thread+0xc/0xa4

Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-02-23 14:36:31 +08:00
Huacai Chen
1001db6c42 LoongArch: Disable IRQ before init_fn() for nonboot CPUs
Disable IRQ before init_fn() for nonboot CPUs when hotplug, in order to
silence such warnings (and also avoid potential errors due to unexpected
interrupts):

WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:4503 rcu_cpu_starting+0x214/0x280
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.6.17+ #1198
pc 90000000048e3334 ra 90000000047bd56c tp 900000010039c000 sp 900000010039fdd0
a0 0000000000000001 a1 0000000000000006 a2 900000000802c040 a3 0000000000000000
a4 0000000000000001 a5 0000000000000004 a6 0000000000000000 a7 90000000048e3f4c
t0 0000000000000001 t1 9000000005c70968 t2 0000000004000000 t3 000000000005e56e
t4 00000000000002e4 t5 0000000000001000 t6 ffffffff80000000 t7 0000000000040000
t8 9000000007931638 u0 0000000000000006 s9 0000000000000004 s0 0000000000000001
s1 9000000006356ac0 s2 9000000007244000 s3 0000000000000001 s4 0000000000000001
s5 900000000636f000 s6 7fffffffffffffff s7 9000000002123940 s8 9000000001ca55f8
   ra: 90000000047bd56c tlb_init+0x24c/0x528
  ERA: 90000000048e3334 rcu_cpu_starting+0x214/0x280
 CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
 PRMD: 00000000 (PPLV0 -PIE -PWE)
 EUEN: 00000000 (-FPE -SXE -ASXE -BTE)
 ECFG: 00071000 (LIE=12 VS=7)
ESTAT: 000c0000 [BRK] (IS= ECode=12 EsubCode=0)
 PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.6.17+ #1198
Stack : 0000000000000000 9000000006375000 9000000005b61878 900000010039c000
        900000010039fa30 0000000000000000 900000010039fa38 900000000619a140
        9000000006456888 9000000006456880 900000010039f950 0000000000000001
        0000000000000001 cb0cb028ec7e52e1 0000000002b90000 9000000100348700
        0000000000000000 0000000000000001 ffffffff916d12f1 0000000000000003
        0000000000040000 9000000007930370 0000000002b90000 0000000000000004
        9000000006366000 900000000619a140 0000000000000000 0000000000000004
        0000000000000000 0000000000000009 ffffffffffc681f2 9000000002123940
        9000000001ca55f8 9000000006366000 90000000047a4828 00007ffff057ded8
        00000000000000b0 0000000000000000 0000000000000000 0000000000071000
        ...
Call Trace:
[<90000000047a4828>] show_stack+0x48/0x1a0
[<9000000005b61874>] dump_stack_lvl+0x84/0xcc
[<90000000047f60ac>] __warn+0x8c/0x1e0
[<9000000005b0ab34>] report_bug+0x1b4/0x280
[<9000000005b63110>] do_bp+0x2d0/0x480
[<90000000047a2e20>] handle_bp+0x120/0x1c0
[<90000000048e3334>] rcu_cpu_starting+0x214/0x280
[<90000000047bd568>] tlb_init+0x248/0x528
[<90000000047a4c44>] per_cpu_trap_init+0x124/0x160
[<90000000047a19f4>] cpu_probe+0x494/0xa00
[<90000000047b551c>] start_secondary+0x3c/0xc0
[<9000000005b66134>] smpboot_entry+0x50/0x58

Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-02-23 14:36:31 +08:00
Nathan Lynch
fad87dbd48 powerpc/rtas: use correct function name for resetting TCE tables
The PAPR spec spells the function name as

  "ibm,reset-pe-dma-windows"

but in practice firmware uses the singular form:

  "ibm,reset-pe-dma-window"

in the device tree. Since we have the wrong spelling in the RTAS
function table, reverse lookups (token -> name) fail and warn:

  unexpected failed lookup for token 86
  WARNING: CPU: 1 PID: 545 at arch/powerpc/kernel/rtas.c:659 __do_enter_rtas_trace+0x2a4/0x2b4
  CPU: 1 PID: 545 Comm: systemd-udevd Not tainted 6.8.0-rc4 #30
  Hardware name: IBM,9105-22A POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NL1060_028) hv:phyp pSeries
  NIP [c0000000000417f0] __do_enter_rtas_trace+0x2a4/0x2b4
  LR [c0000000000417ec] __do_enter_rtas_trace+0x2a0/0x2b4
  Call Trace:
   __do_enter_rtas_trace+0x2a0/0x2b4 (unreliable)
   rtas_call+0x1f8/0x3e0
   enable_ddw.constprop.0+0x4d0/0xc84
   dma_iommu_dma_supported+0xe8/0x24c
   dma_set_mask+0x5c/0xd8
   mlx5_pci_init.constprop.0+0xf0/0x46c [mlx5_core]
   probe_one+0xfc/0x32c [mlx5_core]
   local_pci_probe+0x68/0x12c
   pci_call_probe+0x68/0x1ec
   pci_device_probe+0xbc/0x1a8
   really_probe+0x104/0x570
   __driver_probe_device+0xb8/0x224
   driver_probe_device+0x54/0x130
   __driver_attach+0x158/0x2b0
   bus_for_each_dev+0xa8/0x120
   driver_attach+0x34/0x48
   bus_add_driver+0x174/0x304
   driver_register+0x8c/0x1c4
   __pci_register_driver+0x68/0x7c
   mlx5_init+0xb8/0x118 [mlx5_core]
   do_one_initcall+0x60/0x388
   do_init_module+0x7c/0x2a4
   init_module_from_file+0xb4/0x108
   idempotent_init_module+0x184/0x34c
   sys_finit_module+0x90/0x114

And oopses are possible when lockdep is enabled or the RTAS
tracepoints are active, since those paths dereference the result of
the lookup.

Use the correct spelling to match firmware's behavior, adjusting the
related constants to match.

Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Fixes: 8252b88294 ("powerpc/rtas: improve function information lookups")
Reported-by: Gaurav Batra <gbatra@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240222-rtas-fix-ibm-reset-pe-dma-window-v1-1-7aaf235ac63c@linux.ibm.com
2024-02-23 17:21:12 +11:00
Gaurav Batra
09a3c1e461 powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV
When kdump kernel tries to copy dump data over SR-IOV, LPAR panics due
to NULL pointer exception:

  Kernel attempted to read user page (0) - exploit attempt? (uid: 0)
  BUG: Kernel NULL pointer dereference on read at 0x00000000
  Faulting instruction address: 0xc000000020847ad4
  Oops: Kernel access of bad area, sig: 11 [#1]
  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries
  Modules linked in: mlx5_core(+) vmx_crypto pseries_wdt papr_scm libnvdimm mlxfw tls psample sunrpc fuse overlay squashfs loop
  CPU: 12 PID: 315 Comm: systemd-udevd Not tainted 6.4.0-Test102+ #12
  Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_008) hv:phyp pSeries
  NIP:  c000000020847ad4 LR: c00000002083b2dc CTR: 00000000006cd18c
  REGS: c000000029162ca0 TRAP: 0300   Not tainted  (6.4.0-Test102+)
  MSR:  800000000280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 48288244  XER: 00000008
  CFAR: c00000002083b2d8 DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 1
  ...
  NIP _find_next_zero_bit+0x24/0x110
  LR  bitmap_find_next_zero_area_off+0x5c/0xe0
  Call Trace:
    dev_printk_emit+0x38/0x48 (unreliable)
    iommu_area_alloc+0xc4/0x180
    iommu_range_alloc+0x1e8/0x580
    iommu_alloc+0x60/0x130
    iommu_alloc_coherent+0x158/0x2b0
    dma_iommu_alloc_coherent+0x3c/0x50
    dma_alloc_attrs+0x170/0x1f0
    mlx5_cmd_init+0xc0/0x760 [mlx5_core]
    mlx5_function_setup+0xf0/0x510 [mlx5_core]
    mlx5_init_one+0x84/0x210 [mlx5_core]
    probe_one+0x118/0x2c0 [mlx5_core]
    local_pci_probe+0x68/0x110
    pci_call_probe+0x68/0x200
    pci_device_probe+0xbc/0x1a0
    really_probe+0x104/0x540
    __driver_probe_device+0xb4/0x230
    driver_probe_device+0x54/0x130
    __driver_attach+0x158/0x2b0
    bus_for_each_dev+0xa8/0x130
    driver_attach+0x34/0x50
    bus_add_driver+0x16c/0x300
    driver_register+0xa4/0x1b0
    __pci_register_driver+0x68/0x80
    mlx5_init+0xb8/0x100 [mlx5_core]
    do_one_initcall+0x60/0x300
    do_init_module+0x7c/0x2b0

At the time of LPAR dump, before kexec hands over control to kdump
kernel, DDWs (Dynamic DMA Windows) are scanned and added to the FDT.
For the SR-IOV case, default DMA window "ibm,dma-window" is removed from
the FDT and DDW added, for the device.

Now, kexec hands over control to the kdump kernel.

When the kdump kernel initializes, PCI busses are scanned and IOMMU
group/tables created, in pci_dma_bus_setup_pSeriesLP(). For the SR-IOV
case, there is no "ibm,dma-window". The original commit: b1fc44eaa9,
fixes the path where memory is pre-mapped (direct mapped) to the DDW.
When TCEs are direct mapped, there is no need to initialize IOMMU
tables.

iommu_table_setparms_lpar() only considers "ibm,dma-window" property
when initiallizing IOMMU table. In the scenario where TCEs are
dynamically allocated for SR-IOV, newly created IOMMU table is not
initialized. Later, when the device driver tries to enter TCEs for the
SR-IOV device, NULL pointer execption is thrown from iommu_area_alloc().

The fix is to initialize the IOMMU table with DDW property stored in the
FDT. There are 2 points to remember:

	1. For the dedicated adapter, kdump kernel would encounter both
	   default and DDW in FDT. In this case, DDW property is used to
	   initialize the IOMMU table.

	2. A DDW could be direct or dynamic mapped. kdump kernel would
	   initialize IOMMU table and mark the existing DDW as
	   "dynamic". This works fine since, at the time of table
	   initialization, iommu_table_clear() makes some space in the
	   DDW, for some predefined number of TCEs which are needed for
	   kdump to succeed.

Fixes: b1fc44eaa9 ("pseries/iommu/ddw: Fix kdump to work in absence of ibm,dma-window")
Signed-off-by: Gaurav Batra <gbatra@linux.vnet.ibm.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240125203017.61014-1-gbatra@linux.ibm.com
2024-02-23 17:13:13 +11:00
Dave Airlie
f581dbb34c A list handling fix and 64bit division on 32bit platform fix for the
drm/buddy allocator, a cast warning and an initialization fix for
 nouveau, a bridge handling fix for meson, an initialisation fix for
 ivpu, a SPARC build fix for fbdev, a double-free fix for ttm, and two
 fence handling fixes for syncobj.
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Merge tag 'drm-misc-fixes-2024-02-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

A list handling fix and 64bit division on 32bit platform fix for the
drm/buddy allocator, a cast warning and an initialization fix for
nouveau, a bridge handling fix for meson, an initialisation fix for
ivpu, a SPARC build fix for fbdev, a double-free fix for ttm, and two
fence handling fixes for syncobj.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/gl2antuifidtzn3dfm426p7xwh5fxj23behagwh26owfnosh2w@gqoa7vj5prnh
2024-02-23 08:09:50 +10:00
Alexandre Ghiti
fc325b1a91
riscv: Fix build error if !CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
The new riscv specific arch_hugetlb_migration_supported() must be
guarded with a #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION to avoid
the following build error:

In file included from include/linux/hugetlb.h:851,
                    from kernel/fork.c:52:
>> arch/riscv/include/asm/hugetlb.h:15:42: error: static declaration of 'arch_hugetlb_migration_supported' follows non-static declaration
      15 | #define arch_hugetlb_migration_supported arch_hugetlb_migration_supported
         |                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/hugetlb.h:916:20: note: in expansion of macro 'arch_hugetlb_migration_supported'
     916 | static inline bool arch_hugetlb_migration_supported(struct hstate *h)
         |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/hugetlb.h:14:6: note: previous declaration of 'arch_hugetlb_migration_supported' with type 'bool(struct hstate *)' {aka '_Bool(struct hstate *)'}
      14 | bool arch_hugetlb_migration_supported(struct hstate *h);
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202402110258.CV51JlEI-lkp@intel.com/
Fixes: ce68c03545 ("riscv: Fix arch_hugetlb_migration_supported() for NAPOT")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240211083640.756583-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-22 12:28:25 -08:00
Yangyu Chen
c21f014818
riscv: mm: fix NOCACHE_THEAD does not set bit[61] correctly
Previous commit dbfbda3bd6 ("riscv: mm: update T-Head memory type
definitions") from patch [1] missed a `<` for bit shifting, result in
bit(61) does not set in _PAGE_NOCACHE_THEAD and leaves bit(0) set instead.
This patch get this fixed.

Link: https://lore.kernel.org/linux-riscv/20230912072510.2510-1-jszhang@kernel.org/ [1]
Fixes: dbfbda3bd6 ("riscv: mm: update T-Head memory type definitions")
Signed-off-by: Yangyu Chen <cyy@cyyself.name>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/tencent_E19FA1A095768063102E654C6FC858A32F06@qq.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-22 12:21:27 -08:00
Zong Li
680341382d
riscv: add CALLER_ADDRx support
CALLER_ADDRx returns caller's address at specified level, they are used
for several tracers. These macros eventually use
__builtin_return_address(n) to get the caller's address if arch doesn't
define their own implementation.

In RISC-V, __builtin_return_address(n) only works when n == 0, we need
to walk the stack frame to get the caller's address at specified level.

data.level started from 'level + 3' due to the call flow of getting
caller's address in RISC-V implementation. If we don't have additional
three iteration, the level is corresponding to follows:

callsite -> return_address -> arch_stack_walk -> walk_stackframe
|           |                 |                  |
level 3     level 2           level 1            level 0

Fixes: 10626c32e3 ("riscv/ftrace: Add basic support")
Cc: stable@vger.kernel.org
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Zong Li <zong.li@sifive.com>
Link: https://lore.kernel.org/r/20240202015102.26251-1-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-22 12:17:47 -08:00
Palmer Dabbelt
4af24146aa
Merge commit '8246601a7d' into fixes
This single fix is also part of a larger cleanup, so I'm merging it
into my fixes branch so it can be shared with for-next.

* commit '8246601a7d':
  riscv: tlb: fix __p*d_free_tlb()
2024-02-22 12:16:37 -08:00
Linus Torvalds
6714ebb922 Including fixes from bpf and netfilter.
Current release - regressions:
 
   - af_unix: fix another unix GC hangup
 
 Previous releases - regressions:
 
   - core: fix a possible AF_UNIX deadlock
 
   - bpf: fix NULL pointer dereference in sk_psock_verdict_data_ready()
 
   - netfilter: nft_flow_offload: release dst in case direct xmit path is used
 
   - bridge: switchdev: ensure MDB events are delivered exactly once
 
   - l2tp: pass correct message length to ip6_append_data
 
   - dccp/tcp: unhash sk from ehash for tb2 alloc failure after check_estalblished()
 
   - tls: fixes for record type handling with PEEK
 
   - devlink: fix possible use-after-free and memory leaks in devlink_init()
 
 Previous releases - always broken:
 
   - bpf: fix an oops when attempting to read the vsyscall
   	 page through bpf_probe_read_kernel
 
   - sched: act_mirred: use the backlog for mirred ingress
 
   - netfilter: nft_flow_offload: fix dst refcount underflow
 
   - ipv6: sr: fix possible use-after-free and null-ptr-deref
 
   - mptcp: fix several data races
 
   - phonet: take correct lock to peek at the RX queue
 
 Misc:
 
   - handful of fixes and reliability improvements for selftests
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.8.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from bpf and netfilter.

  Current release - regressions:

   - af_unix: fix another unix GC hangup

  Previous releases - regressions:

   - core: fix a possible AF_UNIX deadlock

   - bpf: fix NULL pointer dereference in sk_psock_verdict_data_ready()

   - netfilter: nft_flow_offload: release dst in case direct xmit path
     is used

   - bridge: switchdev: ensure MDB events are delivered exactly once

   - l2tp: pass correct message length to ip6_append_data

   - dccp/tcp: unhash sk from ehash for tb2 alloc failure after
     check_estalblished()

   - tls: fixes for record type handling with PEEK

   - devlink: fix possible use-after-free and memory leaks in
     devlink_init()

  Previous releases - always broken:

   - bpf: fix an oops when attempting to read the vsyscall page through
     bpf_probe_read_kernel

   - sched: act_mirred: use the backlog for mirred ingress

   - netfilter: nft_flow_offload: fix dst refcount underflow

   - ipv6: sr: fix possible use-after-free and null-ptr-deref

   - mptcp: fix several data races

   - phonet: take correct lock to peek at the RX queue

  Misc:

   - handful of fixes and reliability improvements for selftests"

* tag 'net-6.8.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (72 commits)
  l2tp: pass correct message length to ip6_append_data
  net: phy: realtek: Fix rtl8211f_config_init() for RTL8211F(D)(I)-VD-CG PHY
  selftests: ioam: refactoring to align with the fix
  Fix write to cloned skb in ipv6_hop_ioam()
  phonet/pep: fix racy skb_queue_empty() use
  phonet: take correct lock to peek at the RX queue
  net: sparx5: Add spinlock for frame transmission from CPU
  net/sched: flower: Add lock protection when remove filter handle
  devlink: fix port dump cmd type
  net: stmmac: Fix EST offset for dwmac 5.10
  tools: ynl: don't leak mcast_groups on init error
  tools: ynl: make sure we always pass yarg to mnl_cb_run
  net: mctp: put sock on tag allocation failure
  netfilter: nf_tables: use kzalloc for hook allocation
  netfilter: nf_tables: register hooks last when adding new chain/flowtable
  netfilter: nft_flow_offload: release dst in case direct xmit path is used
  netfilter: nft_flow_offload: reset dst in route object after setting up flow
  netfilter: nf_tables: set dormant flag on hook register failure
  selftests: tls: add test for peeking past a record of a different type
  selftests: tls: add test for merging of same-type control messages
  ...
2024-02-22 09:57:58 -08:00
Geert Uytterhoeven
8c987693dc ARM: dts: renesas: rcar-gen2: Add missing #interrupt-cells to DA9063 nodes
make dtbs_check W=2:

    arch/arm/boot/dts/renesas/r8a7790-lager.dts:444.11-458.5: Warning (interrupt_provider): /i2c-mux4/pmic@58: Missing '#interrupt-cells' in interrupt provider
    ...

Fix this by adding the missing #interrupt-cells properties.

Reported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/a351e503ea97fb1af68395843f513925ff1bdf26.1707922460.git.geert+renesas@glider.be
2024-02-22 10:55:03 +01:00
Paolo Abeni
fdcd4467ba bpf-for-netdev
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2024-02-22

The following pull-request contains BPF updates for your *net* tree.

We've added 11 non-merge commits during the last 24 day(s) which contain
a total of 15 files changed, 217 insertions(+), 17 deletions(-).

The main changes are:

1) Fix a syzkaller-triggered oops when attempting to read the vsyscall
   page through bpf_probe_read_kernel and friends, from Hou Tao.

2) Fix a kernel panic due to uninitialized iter position pointer in
   bpf_iter_task, from Yafang Shao.

3) Fix a race between bpf_timer_cancel_and_free and bpf_timer_cancel,
   from Martin KaFai Lau.

4) Fix a xsk warning in skb_add_rx_frag() (under CONFIG_DEBUG_NET)
   due to incorrect truesize accounting, from Sebastian Andrzej Siewior.

5) Fix a NULL pointer dereference in sk_psock_verdict_data_ready,
   from Shigeru Yoshida.

6) Fix a resolve_btfids warning when bpf_cpumask symbol cannot be
   resolved, from Hari Bathini.

bpf-for-netdev

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()
  selftests/bpf: Add negtive test cases for task iter
  bpf: Fix an issue due to uninitialized bpf_iter_task
  selftests/bpf: Test racing between bpf_timer_cancel_and_free and bpf_timer_cancel
  bpf: Fix racing between bpf_timer_cancel_and_free and bpf_timer_cancel
  selftest/bpf: Test the read of vsyscall page under x86-64
  x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()
  x86/mm: Move is_vsyscall_vaddr() into asm/vsyscall.h
  bpf, scripts: Correct GPL license name
  xsk: Add truesize to skb_add_rx_frag().
  bpf: Fix warning for bpf_cpumask in verifier
====================

Link: https://lore.kernel.org/r/20240221231826.1404-1-daniel@iogearbox.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-02-22 10:04:47 +01:00
Palmer Dabbelt
58506612bf
Merge patch series "RISC-V: Fix CONFIG_AS_HAS_OPTION_ARCH with tip of tree LLVM"
Nathan Chancellor <nathan@kernel.org> says:

Eric reported that builds of LLVM with [1] (close to tip of tree) have
CONFIG_AS_HAS_OPTION_ARCH=n because the test for expected failure on
invalid input has started succeeding.

This Kconfig test was added because '.option arch' only causes an
assembler warning when it is unsupported, rather than a hard error,
which is what users of as-instr expect when something is unsupported.

This can be resolved by turning assembler warnings into errors with
'-Wa,--fatal-warnings' like we do with the compiler with '-Werror',
which is what the first patch does. The second patch removes the invalid
test, as the valid test is good enough with fatal warnings.

I have diffed several configurations for the different architectures
that use as-instr and I have found no issues.

[1]: 3ac9fe69f7

* b4-shazam-merge:
  RISC-V: Drop invalid test from CONFIG_AS_HAS_OPTION_ARCH
  kbuild: Add -Wa,--fatal-warnings to as-instr invocation

Link: https://lore.kernel.org/r/20240125-fix-riscv-option-arch-llvm-18-v1-0-390ac9cc3cd0@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-02-21 15:07:41 -08:00
Linus Torvalds
39133352cb ARM: Two fixes for the ITS emulation. Unmapped interrupts were
used instead of ignored, causing NULL pointer dereferences.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Two fixes for ARM ITS emulation. Unmapped interrupts were used instead
  of ignored, causing NULL pointer dereferences"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: arm64: vgic-its: Test for valid IRQ in MOVALL handler
  KVM: arm64: vgic-its: Test for valid IRQ in its_sync_lpi_pending_table()
2024-02-21 09:13:27 -08:00
Jason Gunthorpe
723a2cc8d6 s390: use the correct count for __iowrite64_copy()
The signature for __iowrite64_copy() requires the number of 64 bit
quantities, not bytes. Multiple by 8 to get to a byte length before
invoking zpci_memcpy_toio()

Fixes: 87bc359b98 ("s390/pci: speed up __iowrite64_copy by using pci store block insn")
Acked-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/0-v1-9223d11a7662+1d7785-s390_iowrite64_jgg@nvidia.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-02-21 15:07:46 +01:00
Javier Martinez Canillas
ed683b9bb9 sparc: Fix undefined reference to fb_is_primary_device
Commit 55bffc8170 ("fbdev: Split frame buffer support in FB and FB_CORE
symbols") added a new FB_CORE Kconfig symbol, that can be enabled to only
have fbcon/VT and DRM fbdev emulation, but without support for any legacy
fbdev driver.

Unfortunately, it missed to change the CONFIG_FB in arch/sparc makefiles,
which leads to the following linking error in some sparc64 configurations:

   sparc64-linux-ld: drivers/video/fbdev/core/fbcon.o: in function `fbcon_fb_registered':
>> fbcon.c:(.text+0x4f60): undefined reference to `fb_is_primary_device'

Fixes: 55bffc8170 ("fbdev: Split frame buffer support in FB and FB_CORE symbols")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/r/202401290306.IV8rhJ02-lkp@intel.com/
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: <stable@vger.kernel.org> # v6.6+
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240220095428.3341195-1-javierm@redhat.com
2024-02-21 14:08:41 +01:00
Paolo Bonzini
c48617fbbe KVM/arm64 fixes for 6.8, take #3
- Check for the validity of interrupts handled by a MOVALL
   command
 
 - Check for the validity of interrupts while reading the
   pending state on enabling LPIs.
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Merge tag 'kvmarm-fixes-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.8, take #3

- Check for the validity of interrupts handled by a MOVALL
  command

- Check for the validity of interrupts while reading the
  pending state on enabling LPIs.
2024-02-21 05:18:56 -05:00