- 03 Dec, 2022 1 commit
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Dave Jiang authored
Set the cxlds->serial as the dimm_id to be fed to __nvdimm_create(). The security code uses that as the key description for the security key of the memory device. The nvdimm unlock code cannot find the respective key without the dimm_id. Reviewed-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by:
Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/166863357043.80269.4337575149671383294.stgit@djiang5-desk3.ch.intel.com Link: https://lore.kernel.org/r/166983620459.2734609.10175456773200251184.stgit@djiang5-desk3.ch.intel.com Link: https://lore.kernel.org/r/166993219918.1995348.10786511454826454601.stgit@dwillia2-xfh.jf.intel.comSigned-off-by:
Dan Williams <dan.j.williams@intel.com>
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- 01 Dec, 2022 17 commits
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Dave Jiang authored
nfit_test overrode the security_show() sysfs attribute function in nvdimm dimm_devs in order to allow testing of security unlock. With the introduction of CXL security commands, the trick to override security_show() becomes significantly more complicated. By introdcing a security flag CONFIG_NVDIMM_SECURITY_TEST, libnvdimm can just toggle the check via a compile option. In addition the original override can can be removed from tools/testing/nvdimm/. The flag will also be used to bypass cpu_cache_invalidate_memregion() when set in a different commit. This allows testing on QEMU with nfit_test or cxl_test since cpu_cache_has_invalidate_memregion() checks whether X86_FEATURE_HYPERVISOR cpu feature flag is set on x86. Reviewed-by:
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Dave Jiang authored
Add provider name in order to associate cxl test dimm from cxl_test to the cxl pmem device when going through sysfs for security testing. Reviewed-by:
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Dave Jiang authored
The mock cxl mem devs needs a way to go into "locked" status to simulate when the platform is rebooted. Add a sysfs mechanism so the device security state is set to "locked" and the frozen state bits are cleared. Reviewed-by:
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Dave Jiang authored
Add an id group attribute for CXL based nvdimm object. The addition allows ndctl to display the "unique id" for the nvdimm. The serial number for the CXL memory device will be used for this id. [ { "dev":"nmem10", "id":"0x4", "security":"disabled" }, ] The id attribute is needed by the ndctl security key management to setup a keyblob with a unique file name tied to the mem device. Reviewed-by: -
Dave Jiang authored
The original nvdimm_security_ops ->disable() only supports user passphrase for security disable. The CXL spec introduced the disabling of master passphrase. Add a ->disable_master() callback to support this new operation and leaving the old ->disable() mechanism alone. A "disable_master" command is added for the sysfs attribute in order to allow command to be issued from userspace. ndctl will need enabling in order to utilize this new operation. Reviewed-by:
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Dave Jiang authored
Add support to emulate a CXL mem device support the "passphrase secure erase" operation. Reviewed-by:
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Dave Jiang authored
Create callback function to support the nvdimm_security_ops() ->erase() callback. Translate the operation to send "Passphrase Secure Erase" security command for CXL memory device. When the mem device is secure erased, cpu_cache_invalidate_memregion() is called in order to invalidate all CPU caches before attempting to access the mem device again. See CXL 3.0 spec section 8.2.9.8.6.6 for reference. Reviewed-by:
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Dave Jiang authored
Add support to emulate a CXL mem device support the "Unlock" operation. Reviewed-by:
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Dave Jiang authored
Create callback function to support the nvdimm_security_ops() ->unlock() callback. Translate the operation to send "Unlock" security command for CXL mem device. When the mem device is unlocked, cpu_cache_invalidate_memregion() is called in order to invalidate all CPU caches before attempting to access the mem device. See CXL rev3.0 spec section 8.2.9.8.6.4 for reference. Reviewed-by:
Davidlohr Bueso <dave@stgolabs.net> Reviewed-by:
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Dave Jiang authored
Add support to emulate a CXL mem device support the "Freeze Security State" operation. Reviewed-by:
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Dave Jiang authored
Create callback function to support the nvdimm_security_ops() ->freeze() callback. Translate the operation to send "Freeze Security State" security command for CXL memory device. See CXL rev3.0 spec section 8.2.9.8.6.5 for reference. Reviewed-by:
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Dave Jiang authored
Add support to emulate a CXL mem device support the "Disable Passphrase" operation. The operation supports disabling of either a user or a master passphrase. The emulation will provide support for both user and master passphrase. Reviewed-by:
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Dave Jiang authored
Create callback function to support the nvdimm_security_ops ->disable() callback. Translate the operation to send "Disable Passphrase" security command for CXL memory device. The operation supports disabling a passphrase for the CXL persistent memory device. In the original implementation of nvdimm_security_ops, this operation only supports disabling of the user passphrase. This is due to the NFIT version of disable passphrase only supported disabling of user passphrase. The CXL spec allows disabling of the master passphrase as well which nvidmm_security_ops does not support yet. In this commit, the callback function will only support user passphrase. See CXL rev3.0 spec section 8.2.9.8.6.3 for reference. Reviewed-by:
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Dave Jiang authored
Add support to emulate a CXL mem device supporting the "Set Passphrase" operation. The operation supports setting of either a user or a master passphrase. Reviewed-by:
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Dave Jiang authored
Create callback function to support the nvdimm_security_ops ->change_key() callback. Translate the operation to send "Set Passphrase" security command for CXL memory device. The operation supports setting a passphrase for the CXL persistent memory device. It also supports the changing of the currently set passphrase. The operation allows manipulation of a user passphrase or a master passphrase. See CXL rev3.0 spec section 8.2.9.8.6.2 for reference. However, the spec leaves a gap WRT master passphrase usages. The spec does not define any ways to retrieve the status of if the support of master passphrase is available for the device, nor does the commands that utilize master passphrase will return a specific error that indicates master passphrase is not supported. If using a device does not support master passphrase and a command is issued with a master passphrase, the error message returned by the device will be ambiguous. Reviewed-by:
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Dave Jiang authored
Add the emulation support for handling "Get Security State" opcode for a CXL memory device for the cxl_test. The function will copy back device security state bitmask to the output payload. The security state data is added as platform_data for the mock mem device. Reviewed-by:
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Dave Jiang authored
Add nvdimm_security_ops support for CXL memory device with the introduction of the ->get_flags() callback function. This is part of the "Persistent Memory Data-at-rest Security" command set for CXL memory device support. The ->get_flags() function provides the security state of the persistent memory device defined by the CXL 3.0 spec section 8.2.9.8.6.1. Reviewed-by:
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- 14 Nov, 2022 10 commits
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Adam Manzanares authored
When reviewing the CFMWS parsing code that deals with the HDM decoders, I noticed a couple of magic numbers. This commit replaces these magic numbers with constants defined by the CXL 3.0 specification. v2: - Change references to CXL 3.0 specification (David) - CXL_DECODER_MAX_GRANULARITY_ORDER -> CXL_DECODER_MAX_ENCODED_IG (Dan) Signed-off-by:
Adam Manzanares <a.manzanares@samsung.com> Reviewed-by:
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Robert Richter authored
In cxl_acpi_probe() the iterator bus_for_each_dev() walks through all CXL hosts. Since all dev_*() debug messages point to the ACPI0017 device which is the CXL root for all hosts, the device information is pointless as it is always the same device. Change this to use the host device for this instead. Also, add additional host specific information such as CXL support, UID and CHBCR. This is an example log: acpi ACPI0016:00: UID found: 4 acpi ACPI0016:00: CHBCR found: 0x28090000000 acpi ACPI0016:00: dport added to root0 acpi ACPI0016:00: host-bridge: ACPI0016:00 pci0000:7f: host supports CXL Signed-off-by:
Robert Richter <rrichter@amd.com> Link: https://lore.kernel.org/r/20221018132341.76259-6-rrichter@amd.comSigned-off-by:
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Dan Williams authored
In preparation for cxl_acpi walking pci_root->bus->bridge, add that association to the mock pci_root instances. Note that the missing 3rd entry in mock_pci_root[] was not noticed until now given that the test version of to_cxl_host_bridge() (tools/testing/cxl/mock_acpi.c), obviated the need for that entry. However, "cxl/acpi: Improve debug messages in cxl_acpi_probe()" [1] needs pci_root->bus->bridge to be populated. Link: https://lore.kernel.org/r/20221018132341.76259-6-rrichter@amd.com [1] Cc: Robert Richter <rrichter@amd.com> Signed-off-by:
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Robert Richter authored
CXL dports are added in a couple of code paths using devm_cxl_add_dport(). Debug messages are individually generated, but are incomplete and inconsistent. Change this by moving its generation to devm_cxl_add_dport(). This unifies the messages and reduces code duplication. Also, generate messages on failure. Use a __devm_cxl_add_dport() wrapper to keep the readability of the error exits. Signed-off-by:
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Robert Richter authored
CXL ports are added in a couple of code paths using devm_cxl_add_port(). Debug messages are individually generated, but are incomplete and inconsistent. Change this by moving its generation to devm_cxl_add_port(). This unifies the messages and reduces code duplication. Also, generate messages on failure. Use a __devm_cxl_add_port() wrapper to keep the readability of the error exits. Signed-off-by:
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Robert Richter authored
The physical base address of a CXL range can be invalid and is then set to CXL_RESOURCE_NONE. In general software shall prevent such situations, but it is hard to proof this may never happen. E.g. in add_port_attach_ep() there this the following: component_reg_phys = find_component_registers(uport_dev); port = devm_cxl_add_port(&parent_port->dev, uport_dev, component_reg_phys, parent_dport); find_component_registers() and subsequent functions (e.g. cxl_regmap_to_base()) may return CXL_RESOURCE_NONE. But it is written to port without any further check in cxl_port_alloc(): port->component_reg_phys = component_reg_phys; It is then later directly used in devm_cxl_setup_hdm() to map io ranges with devm_cxl_iomap_block(). Just an example... Check this condition. Also do not fail silently like an ioremap() failure, use a WARN_ON_ONCE() for it. Signed-off-by: -
Robert Richter authored
The function devm_cxl_iomap_block() is only used in the core code. There are two declarations in header files of it, in drivers/cxl/core/core.h and drivers/cxl/cxl.h. Remove its unused declaration in drivers/cxl/cxl.h. Fixing build error in regs.c found by kernel test robot by including "core.h" there. Signed-off-by:
kernel test robot <lkp@intel.com> Reviewed-by:
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Davidlohr Bueso authored
With CXL security features, and CXL dynamic provisioning, global CPU cache flushing nvdimm requirements are no longer specific to that subsystem, even beyond the scope of security_ops. CXL will need such semantics for features not necessarily limited to persistent memory. The functionality this is enabling is to be able to instantaneously secure erase potentially terabytes of memory at once and the kernel needs to be sure that none of the data from before the erase is still present in the cache. It is also used when unlocking a memory device where speculative reads and firmware accesses could have cached poison from before the device was unlocked. Lastly this facility is used when mapping new devices, or new capacity into an established physical address range. I.e. when the driver switches DeviceA mapping AddressX to DeviceB mapping AddressX then any cached data from DeviceA:AddressX needs to be invalidated. This capability is typically only used once per-boot (for unlock), or once per bare metal provisioning event (secure erase), like when handing off the system to another tenant or decommissioning a device. It may also be used for dynamic CXL region provisioning. Users must first call cpu_cache_has_invalidate_memregion() to know whether this functionality is available on the architecture. On x86 this respects the constraints of when wbinvd() is tolerable. It is already the case that wbinvd() is problematic to allow in VMs due its global performance impact and KVM, for example, has been known to just trap and ignore the call. With confidential computing guest execution of wbinvd() may even trigger an exception. Given guests should not be messing with the bare metal address map via CXL configuration changes cpu_cache_has_invalidate_memregion() returns false in VMs. While this global cache invalidation facility, is exported to modules, since NVDIMM and CXL support can be built as a module, it is not for general use. The intent is that this facility is not available outside of specific "device-memory" use cases. To make that expectation as clear as possible the API is scoped to a new "DEVMEM" module namespace that only the NVDIMM and CXL subsystems are expected to import. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Tested-by:
Dave Hansen <dave.hansen@linux.intel.com> Co-developed-by:
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Ira Weiny authored
The PCIE Data Object Exchange (DOE) mailbox is a protocol run over configuration cycles. It assumes one initiator at a time. While the kernel has control of the mailbox user space writes could interfere with the kernel access. Mark DOE mailbox config space exclusive when iterated by the CXL driver. Signed-off-by:
Ira Weiny <ira.weiny@intel.com> Reviewed-by:
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Ira Weiny authored
PCI config space access from user space has traditionally been unrestricted with writes being an understood risk for device operation. Unfortunately, device breakage or odd behavior from config writes lacks indicators that can leave driver writers confused when evaluating failures. This is especially true with the new PCIe Data Object Exchange (DOE) mailbox protocol where backdoor shenanigans from user space through things such as vendor defined protocols may affect device operation without complete breakage. A prior proposal restricted read and writes completely.[1] Greg and Bjorn pointed out that proposal is flawed for a couple of reasons. First, lspci should always be allowed and should not interfere with any device operation. Second, setpci is a valuable tool that is sometimes necessary and it should not be completely restricted.[2] Finally methods exist for full lock of device access if required. Even though access should not be restricted it would be nice for driver writers to be able to flag critical parts of the config space such that interference from user space can be detected. Introduce pci_request_config_region_exclusive() to mark exclusive config regions. Such regions trigger a warning and kernel taint if accessed via user space. Create pci_warn_once() to restrict the user from spamming the log. [1] https://lore.kernel.org/all/161663543465.1867664.5674061943008380442.stgit@dwillia2-desk3.amr.corp.intel.com/ [2] https://lore.kernel.org/all/YF8NGeGv9vYcMfTV@kroah.com/ Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by:
Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20220926215711.2893286-2-ira.weiny@intel.comSigned-off-by:
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- 06 Nov, 2022 12 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxlLinus Torvalds authored
Pull cxl fixes from Dan Williams: "Several fixes for CXL region creation crashes, leaks and failures. This is mainly fallout from the original implementation of dynamic CXL region creation (instantiate new physical memory pools) that arrived in v6.0-rc1. Given the theme of "failures in the presence of pass-through decoders" this also includes new regression test infrastructure for that case. Summary: - Fix region creation crash with pass-through decoders - Fix region creation crash when no decoder allocation fails - Fix region creation crash when scanning regions to enforce the increasing physical address order constraint that CXL mandates - Fix a memory leak for cxl_pmem_region objects, track 1:N instead of 1:1 memory-device-to-region associations. - Fix a memory leak for cxl_region objects when regions with active targets are deleted - Fix assignment of NUMA nodes to CXL regions by CFMWS (CXL Window) emulated proximity domains. - Fix region creation failure for switch attached devices downstream of a single-port host-bridge - Fix false positive memory leak of cxl_region objects by recycling recently used region ids rather than freeing them - Add regression test infrastructure for a pass-through decoder configuration - Fix some mailbox payload handling corner cases" * tag 'cxl-fixes-for-6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: cxl/region: Recycle region ids cxl/region: Fix 'distance' calculation with passthrough ports tools/testing/cxl: Add a single-port host-bridge regression config tools/testing/cxl: Fix some error exits cxl/pmem: Fix cxl_pmem_region and cxl_memdev leak cxl/region: Fix cxl_region leak, cleanup targets at region delete cxl/region: Fix region HPA ordering validation cxl/pmem: Use size_add() against integer overflow cxl/region: Fix decoder allocation crash ACPI: NUMA: Add CXL CFMWS 'nodes' to the possible nodes set cxl/pmem: Fix failure to account for 8 byte header for writes to the device LSA. cxl/region: Fix null pointer dereference due to pass through decoder commit cxl/mbox: Add a check on input payload size -
Linus Torvalds authored
Merge tag 'hwmon-for-v6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: "Fix two regressions: - Commit 54cc3dbf ("hwmon: (pmbus) Add regulator supply into macro") resulted in regulator undercount when disabling regulators. Revert it. - The thermal subsystem rework caused the scmi driver to no longer register with the thermal subsystem because index values no longer match. To fix the problem, the scmi driver now directly registers with the thermal subsystem, no longer through the hwmon core" * tag 'hwmon-for-v6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: Revert "hwmon: (pmbus) Add regulator supply into macro" hwmon: (scmi) Register explicitly with Thermal Framework
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Borislav Petkov: - Add Cooper Lake's stepping to the PEBS guest/host events isolation fixed microcode revisions checking quirk - Update Icelake and Sapphire Rapids events constraints - Use the standard energy unit for Sapphire Rapids in RAPL - Fix the hw_breakpoint test to fail more graciously on !SMP configs * tag 'perf_urgent_for_v6.1_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[] perf/x86/intel: Fix pebs event constraints for SPR perf/x86/intel: Fix pebs event constraints for ICL perf/x86/rapl: Use standard Energy Unit for SPR Dram RAPL domain perf/hw_breakpoint: test: Skip the test if dependencies unmet
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Borislav Petkov: - Add new Intel CPU models - Enforce that TDX guests are successfully loaded only on TDX hardware where virtualization exception (#VE) delivery on kernel memory is disabled because handling those in all possible cases is "essentially impossible" - Add the proper include to the syscall wrappers so that BTF can see the real pt_regs definition and not only the forward declaration * tag 'x86_urgent_for_v6.1_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Add several Intel server CPU model numbers x86/tdx: Panic on bad configs that #VE on "private" memory access x86/tdx: Prepare for using "INFO" call for a second purpose x86/syscall: Include asm/ptrace.h in syscall_wrapper header
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Linus Torvalds authored
Merge tag 'kbuild-fixes-v6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Use POSIX-compatible grep options - Document git-related tips for reproducible builds - Fix a typo in the modpost rule - Suppress SIGPIPE error message from gcc-ar and llvm-ar - Fix segmentation fault in the menuconfig search * tag 'kbuild-fixes-v6.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: fix segmentation fault in menuconfig search kbuild: fix SIGPIPE error message for AR=gcc-ar and AR=llvm-ar kbuild: fix typo in modpost Documentation: kbuild: Add description of git for reproducible builds kbuild: use POSIX-compatible grep option
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fixes from Paolo Bonzini: "ARM: - Fix the pKVM stage-1 walker erronously using the stage-2 accessor - Correctly convert vcpu->kvm to a hyp pointer when generating an exception in a nVHE+MTE configuration - Check that KVM_CAP_DIRTY_LOG_* are valid before enabling them - Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE - Document the boot requirements for FGT when entering the kernel at EL1 x86: - Use SRCU to protect zap in __kvm_set_or_clear_apicv_inhibit() - Make argument order consistent for kvcalloc() - Userspace API fixes for DEBUGCTL and LBRs" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: Fix a typo about the usage of kvcalloc() KVM: x86: Use SRCU to protect zap in __kvm_set_or_clear_apicv_inhibit() KVM: VMX: Ignore guest CPUID for host userspace writes to DEBUGCTL KVM: VMX: Fold vmx_supported_debugctl() into vcpu_supported_debugctl() KVM: VMX: Advertise PMU LBRs if and only if perf supports LBRs arm64: booting: Document our requirements for fine grained traps with SME KVM: arm64: Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE KVM: Check KVM_CAP_DIRTY_LOG_{RING, RING_ACQ_REL} prior to enabling them KVM: arm64: Fix bad dereference on MTE-enabled systems KVM: arm64: Use correct accessor to parse stage-1 PTEs -
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen fixes from Juergen Gross: "One fix for silencing a smatch warning, and a small cleanup patch" * tag 'for-linus-6.1-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: simplify sysenter and syscall setup x86/xen: silence smatch warning in pmu_msr_chk_emulated()
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
Pull ext4 fixes from Ted Ts'o: "Fix a number of bugs, including some regressions, the most serious of which was one which would cause online resizes to fail with file systems with metadata checksums enabled. Also fix a warning caused by the newly added fortify string checker, plus some bugs that were found using fuzzed file systems" * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: fix fortify warning in fs/ext4/fast_commit.c:1551 ext4: fix wrong return err in ext4_load_and_init_journal() ext4: fix warning in 'ext4_da_release_space' ext4: fix BUG_ON() when directory entry has invalid rec_len ext4: update the backup superblock's at the end of the online resize
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fixes from Steve French: "One symlink handling fix and two fixes foir multichannel issues with iterating channels, including for oplock breaks when leases are disabled" * tag '6.1-rc4-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: cifs: fix use-after-free on the link name cifs: avoid unnecessary iteration of tcp sessions cifs: always iterate smb sessions using primary channel
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-traceLinus Torvalds authored
Pull `lTracing fixes for 6.1-rc3: - Fixed NULL pointer dereference in the ring buffer wait-waiters code for machines that have less CPUs than what nr_cpu_ids returns. The buffer array is of size nr_cpu_ids, but only the online CPUs get initialized. - Fixed use after free call in ftrace_shutdown. - Fix accounting of if a kprobe is enabled - Fix NULL pointer dereference on error path of fprobe rethook_alloc(). - Fix unregistering of fprobe_kprobe_handler - Fix memory leak in kprobe test module * tag 'trace-v6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd() tracing/fprobe: Fix to check whether fprobe is registered correctly fprobe: Check rethook_alloc() return in rethook initialization kprobe: reverse kp->flags when arm_kprobe failed ftrace: Fix use-after-free for dynamic ftrace_ops ring-buffer: Check for NULL cpu_buffer in ring_buffer_wake_waiters()
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Paolo Bonzini authored
Merge tag 'kvmarm-fixes-6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD * Fix the pKVM stage-1 walker erronously using the stage-2 accessor * Correctly convert vcpu->kvm to a hyp pointer when generating an exception in a nVHE+MTE configuration * Check that KVM_CAP_DIRTY_LOG_* are valid before enabling them * Fix SMPRI_EL1/TPIDR2_EL0 trapping on VHE * Document the boot requirements for FGT when entering the kernel at EL1
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