Add a test for VMLOAD/VMSAVE in an L2 guest. The test verifies that L1
intercepts for VMSAVE/VMLOAD always work regardless of
VIRTUAL_VMLOAD_VMSAVE_ENABLE_MASK.
Then, more interestingly, it makes sure that when L1 does not intercept
VMLOAD/VMSAVE, they work as intended in L2. When
VIRTUAL_VMLOAD_VMSAVE_ENABLE_MASK is enabled by L1, VMSAVE/VMLOAD from
L2 should interpret the GPA as an L2 GPA and translate it through the
NPT. When VIRTUAL_VMLOAD_VMSAVE_ENABLE_MASK is disabled by L1,
VMSAVE/VMLOAD from L2 should interpret the GPA as an L1 GPA.
To test this, put two VMCBs (0 and 1) in L1's physical address space,
and have a single L2 GPA where:
- L2 VMCB GPA == L1 VMCB(0) GPA
- L2 VMCB GPA maps to L1 VMCB(1) via the NPT in L1.
This setup allows detecting how the GPA is interpreted based on which L1
VMCB is actually accessed.
In both cases, L2 sets KERNEL_GS_BASE (one of the fields handled by
VMSAVE/VMLOAD), and executes VMSAVE to write its value to the VMCB. The
test userspace code then checks that the write was made to the correct
VMCB (based on whether VIRTUAL_VMLOAD_VMSAVE_ENABLE_MASK is set by L1),
and writes a new value to that VMCB. L2 then executes VMLOAD to load the
new value and makes sure it's reflected correctly in KERNERL_GS_BASE.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20260110004821.3411245-4-yosry.ahmed@linux.dev
Signed-off-by: Sean Christopherson <seanjc@google.com>
Instead of calling memstress_setup_ept_mappings() only in the first
iteration in the loop, move it before the loop.
The call needed to happen within the loop before commit e40e72fec0
("KVM: selftests: Stop passing VMX metadata to TDP mapping functions"),
as memstress_setup_ept_mappings() used to take in a pointer to vmx_pages
and pass it into tdp_identity_map_1g() (to get the EPT root GPA). This
is no longer the case, as tdp_identity_map_1g() gets the EPT root
through stage2 MMU.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20260113171456.2097312-1-yosry.ahmed@linux.dev
Signed-off-by: Sean Christopherson <seanjc@google.com>
Shorten the API to get a PTE as the "PTE" acronym is ubiquitous, and the
"page table entry" makes it unnecessarily difficult to quickly understand
what callers are doing.
No functional change intended.
Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-21-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add L1 SVM code and generalize the setup code to work for both VMX and
SVM. This allows running 'dirty_log_perf_test -n' on AMD CPUs.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-20-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Generalize the code in vmx_dirty_log_test.c by adding SVM-specific L1
code, doing some renaming (e.g. EPT -> TDP), and having setup code for
both SVM and VMX in test_dirty_log().
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-19-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
According to the APM, NPT walks are treated as user accesses. In
preparation for supporting NPT mappings, set the 'user' bit on NPTs by
adding a mask of bits to always be set on PTEs in kvm_mmu.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-18-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Implement nCR3 and NPT initialization functions, similar to the EPT
equivalents, and create common TDP helpers for enablement checking and
initialization. Enable NPT for nested guests by default if the TDP MMU
was initialized, similar to VMX.
Reuse the PTE masks from the main MMU in the NPT MMU, except for the C
and S bits related to confidential VMs.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-17-seanjc@google.com
[sean: apply Yosry's fixup for ncr3_gpa]
Signed-off-by: Sean Christopherson <seanjc@google.com>
In preparation for generalizing the nested dirty logging test, checking
if either EPT or NPT is enabled will be needed. To avoid needing to gate
the kvm_cpu_has_ept() call by the CPU type, make sure the function
returns false if VMX is not available instead of trying to read VMX-only
MSRs.
No functional change intended.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-16-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Now that the functions are no longer VMX-specific, move them to
processor.c. Do a minor comment tweak replacing 'EPT' with 'TDP'.
No functional change intended.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-15-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Rework tdp_map() and friends to use __virt_pg_map() and drop the custom
EPT code in __tdp_pg_map() and tdp_create_pte(). The EPT code and
__virt_pg_map() are practically identical, the main differences are:
- EPT uses the EPT struct overlay instead of the PTE masks.
- EPT always assumes 4-level EPTs.
To reuse __virt_pg_map(), extend the PTE masks to work with EPT's RWX and
X-only capabilities, and provide a tdp_mmu_init() API so that EPT can pass
in the EPT PTE masks along with the root page level (which is currently
hardcoded to '4').
Don't reuse KVM's insane overloading of the USER bit for EPT_R as there's
no reason to multiplex bits in the selftests, e.g. selftests aren't trying
to shadow guest PTEs and thus don't care about funnelling protections into
a common permissions check.
Another benefit of reusing the code is having separate handling for
upper-level PTEs vs 4K PTEs, which avoids some quirks like setting the
large bit on a 4K PTE in the EPTs.
For all intents and purposes, no functional change intended.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Link: https://patch.msgid.link/20251230230150.4150236-14-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add a stage-2 MMU instance so that architectures that support nested
virtualization (more specifically, nested stage-2 page tables) can create
and track stage-2 page tables for running L2 guests. Plumb the structure
into common code to avoid cyclical dependencies, and to provide some line
of sight to having common APIs for creating stage-2 mappings.
As a bonus, putting the member in common code justifies using stage2_mmu
instead of tdp_mmu for x86.
Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-13-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
The root GPA is now retrieved from the nested MMU, stop passing VMX
metadata. This is in preparation for making these functions work for
NPTs as well.
Opportunistically drop tdp_pg_map() since it's unused.
No functional change intended.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-12-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
prepare_eptp() currently allocates new EPTs for each vCPU. memstress has
its own hack to share the EPTs between vCPUs. Currently, there is no
reason to have separate EPTs for each vCPU, and the complexity is
significant. The only reason it doesn't matter now is because memstress
is the only user with multiple vCPUs.
Add vm_enable_ept() to allocate EPT page tables for an entire VM, and use
it everywhere to replace prepare_eptp(). Drop 'eptp' and 'eptp_hva' from
'struct vmx_pages' as they serve no purpose (e.g. the EPTP can be built
from the PGD), but keep 'eptp_gpa' so that the MMU structure doesn't need
to be passed in along with vmx_pages. Dynamically allocate the TDP MMU
structure to avoid a cyclical dependency between kvm_util_arch.h and
kvm_util.h.
Remove the workaround in memstress to copy the EPT root between vCPUs
since that's now the default behavior.
Name the MMU tdp_mmu instead of e.g. nested_mmu or nested.mmu to avoid
recreating the same mess that KVM has with respect to "nested" MMUs, e.g.
does nested refer to the stage-2 page tables created by L1, or the stage-1
page tables created by L2?
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Link: https://patch.msgid.link/20251230230150.4150236-11-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Move the PTE bitmasks into kvm_mmu to parameterize them for virt mapping
functions. Introduce helpers to read/write different PTE bits given a
kvm_mmu.
Drop the 'global' bit definition as it's currently unused, but leave the
'user' bit as it will be used in coming changes. Opportunisitcally
rename 'large' to 'huge' as it's more consistent with the kernel naming.
Leave PHYSICAL_PAGE_MASK alone, it's fixed in all page table formats and
a lot of other macros depend on it. It's tempting to move all the other
macros to be per-struct instead, but it would be too much noise for
little benefit.
Keep c_bit and s_bit in vm->arch as they used before the MMU is
initialized, through __vmcreate() -> vm_userspace_mem_region_add() ->
vm_mem_add() -> vm_arch_has_protected_memory().
No functional change intended.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
[sean: rename accessors to is_<adjective>_pte()]
Link: https://patch.msgid.link/20251230230150.4150236-10-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add an arch structure+field in "struct kvm_mmu" so that architectures can
track arch-specific information for a given MMU.
No functional change intended.
Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-9-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
In preparation for generalizing the x86 virt mapping APIs to work with
TDP (stage-2) page tables, plumb "struct kvm_mmu" into all of the helper
functions instead of operating on vm->mmu directly.
Opportunistically swap the order of the check in virt_get_pte() to first
assert that the parent is the PGD, and then check that the PTE is present,
as it makes more sense to check if the parent PTE is the PGD/root (i.e.
not a PTE) before checking that the PTE is PRESENT.
No functional change intended.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
[sean: rebase on common kvm_mmu structure, rewrite changelog]
Link: https://patch.msgid.link/20251230230150.4150236-8-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add a "struct kvm_mmu" to track a given MMU instance, e.g. a VM's stage-1
MMU versus a VM's stage-2 MMU, so that x86 can share MMU functionality for
both stage-1 and stage-2 MMUs, without creating the potential for subtle
bugs, e.g. due to consuming on vm->pgtable_levels when operating a stage-2
MMU.
Encapsulate the existing de facto MMU in "struct kvm_vm", e.g instead of
burying the MMU details in "struct kvm_vm_arch", to avoid more #ifdefs in
____vm_create(), and in the hopes that other architectures can utilize the
formalized MMU structure if/when they too support stage-2 page tables.
No functional change intended.
Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Stop setting Accessed/Dirty bits when creating EPT entries for L2 so that
the stage-1 and stage-2 (a.k.a. TDP) page table APIs can use common code
without bleeding the EPT hack into the common APIs.
While commit 0944442045 ("selftests: kvm: add test for dirty logging
inside nested guests") is _very_ light on details, the most likely
explanation is that vmx_dirty_log_test was attempting to avoid taking an
EPT Violation on the first _write_ from L2.
static void l2_guest_code(u64 *a, u64 *b)
{
READ_ONCE(*a);
WRITE_ONCE(*a, 1); <===
GUEST_SYNC(true);
...
}
When handling read faults in the shadow MMU, KVM opportunistically creates
a writable SPTE if the mapping can be writable *and* the gPTE is dirty (or
doesn't support the Dirty bit), i.e. if KVM doesn't need to intercept
writes in order to emulate Dirty-bit updates. By setting A/D bits in the
test's EPT entries, the above READ+WRITE will fault only on the read, and
in theory expose the bug fixed by KVM commit 1f4e5fc83a ("KVM: x86: fix
nested guest live migration with PML"). If the Dirty bit is NOT set, the
test will get a false pass due; though again, in theory.
However, the test is flawed (and always was, at least in the versions
posted publicly), as KVM (correctly) marks the corresponding L1 GFN as
dirty (in the dirty bitmap) when creating the writable SPTE. I.e. without
a check on the dirty bitmap after the READ_ONCE(), the check after the
first WRITE_ONCE() will get a false pass due to the dirty bitmap/log having
been updated by the read fault, not by PML.
Furthermore, the subsequent behavior in the test's l2_guest_code()
effectively hides the flawed test behavior, as the straight writes to a
new L2 GPA fault also trigger the KVM bug, and so the test will still
detect the failure due to lack of isolation between the two testcases
(Read=>Write vs. Write=>Write).
WRITE_ONCE(*b, 1);
GUEST_SYNC(true);
WRITE_ONCE(*b, 1);
GUEST_SYNC(true);
GUEST_SYNC(false);
Punt on fixing vmx_dirty_log_test for the moment as it will be easier to
properly fix the test once the TDP code uses the common MMU APIs, at which
point it will be trivially easy for the test to retrieve the EPT PTE and
set the Dirty bit as needed.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
[sean: rewrite changelog to explain the situation]
Link: https://patch.msgid.link/20251230230150.4150236-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Replace the struct overlay with explicit bitmasks, which is clearer and
less error-prone. See commit f18b4aebe1 ("kvm: selftests: do not use
bitfields larger than 32-bits for PTEs") for an example of why bitfields
are not preferable.
Remove the unused PAGE_SHIFT_4K definition while at it.
No functional change intended.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Rename the functions from nested_* to tdp_* to make their purpose
clearer.
No functional change intended.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
On x86, KVM selftests use memslot 0 for all the default regions used by
the test infrastructure. This is an implementation detail.
nested_map_memslot() is currently used to map the default regions by
explicitly passing slot 0, which leaks the library implementation into
the caller.
Rename the function to a very verbose
nested_identity_map_default_memslots() to reflect what it actually does.
Add an assertion that only memslot 0 is being used so that the
implementation does not change from under us.
No functional change intended.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
The function is only used in processor.c, drop the declaration in
processor.h and make it static.
No functional change intended.
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
The function get_desc64_base() performs a series of bitwise left shifts on
fields of various sizes. More specifically, when performing '<< 24' on
'desc->base2' (which is a u8), 'base2' is promoted to a signed integer
before shifting.
In a scenario where base2 >= 0x80, the shift places a 1 into bit 31,
causing the 32-bit intermediate value to become negative. When this
result is cast to uint64_t or ORed into the return value, sign extension
occurs, corrupting the upper 32 bits of the address (base3).
Example:
Given:
base0 = 0x5000
base1 = 0xd6
base2 = 0xf8
base3 = 0xfffffe7c
Expected return: 0xfffffe7cf8d65000
Actual return: 0xfffffffff8d65000
Fix this by explicitly casting the fields to 'uint64_t' before shifting
to prevent sign extension.
Signed-off-by: MJ Pooladkhay <mj@pooladkhay.com>
Link: https://patch.msgid.link/20251222174207.107331-1-mj@pooladkhay.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add a few extra TPR / CR8 tests to x86's xapic_state_test to see if:
* TPR is 0 on reset,
* TPR, PPR and CR8 are equal inside the guest,
* TPR and CR8 read equal by the host after a VMExit
* TPR borderline values set by the host correctly mask interrupts in the
guest.
These hopefully will catch the most obvious cases of improper TPR sync or
interrupt masking.
Do these tests both in x2APIC and xAPIC modes.
The x2APIC mode uses SELF_IPI register to trigger interrupts to give it a
bit of exercise too.
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Acked-by: Naveen N Rao (AMD) <naveen@kernel.org>
[sean: put code in separate test]
Link: https://patch.msgid.link/20251205224937.428122-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
A number of small updates:
- skip building BPF skeletons if libopenssl is missing
- a couple of test updates
- handle error cases of filename__read_build_id()
- support NVIDIA Olympus for ARM SPE profiling
- update tool headers to sync with the kernel
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'perf-tools-fixes-for-v6.19-2026-01-02' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tool fixes and from Namhyung Kim:
- skip building BPF skeletons if libopenssl is missing
- a couple of test updates
- handle error cases of filename__read_build_id()
- support NVIDIA Olympus for ARM SPE profiling
- update tool headers to sync with the kernel
* tag 'perf-tools-fixes-for-v6.19-2026-01-02' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
tools build: Fix the common set of features test wrt libopenssl
tools headers: Sync syscall table with kernel sources
tools headers: Sync linux/socket.h with kernel sources
tools headers: Sync linux/gfp_types.h with kernel sources
tools headers: Sync arm64 headers with kernel sources
tools headers: Sync x86 headers with kernel sources
tools headers: Sync UAPI sound/asound.h with kernel sources
tools headers: Sync UAPI linux/mount.h with kernel sources
tools headers: Sync UAPI linux/fs.h with kernel sources
tools headers: Sync UAPI linux/fcntl.h with kernel sources
tools headers: Sync UAPI KVM headers with kernel sources
tools headers: Sync UAPI drm/drm.h with kernel sources
perf arm-spe: Add NVIDIA Olympus to neoverse list
tools headers arm64: Add NVIDIA Olympus part
perf tests top: Make the test exclusive
perf tests kvm: Avoid leaving perf.data.guest file around
perf symbol: Fix ENOENT case for filename__read_build_id
perf tools: Disable BPF skeleton if no libopenssl found
tools/build: Add a feature test for libopenssl
Fix a recent regression that affects system suspend testing at
the "core" level (Rafael Wysocki)
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Merge tag 'pm-6.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Fix a recent regression that affects system suspend testing
at the 'core' level (Rafael Wysocki)"
* tag 'pm-6.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: sleep: Fix suspend_test() at the TEST_CORE level
Fix the kunit_run_irq_test() function (which I recently added for the
CRC and crypto tests) to be less timing-dependent. This fixes flakiness
in the polyval kunit test suite.
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Merge tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fix from Eric Biggers:
"Fix the kunit_run_irq_test() function (which I recently added for the
CRC and crypto tests) to be less timing-dependent.
This fixes flakiness in the polyval kunit test suite"
* tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
kunit: Enforce task execution in {soft,hard}irq contexts
- Fix several syzkaller found bugs:
* Poor parsing of the RDMA_NL_LS_OP_IP_RESOLVE netlink
* GID entry refcount leaking when CM destruction races with multicast
establishment
* Missing refcount put in ib_del_sub_device_and_put()
- Fixup recently introduced uABI padding for 32 bit consistency
- Avoid user triggered math overflow in MANA and AFA
- Reading invalid netdev data during an event
- kdoc fixes
- Fix never-working gid copying in ib_get_gids_from_rdma_hdr
- Typo in bnxt when validating the BAR
- bnxt mis-parsed IB_SEND_IP_CSUM so it didn't work always
- bnxt out of bounds access in bnxt related to the counters on new devices
- Allocate the bnxt PDE table with the right sizing
- Use dma_free_coherent() correctly in bnxt
- Allow rxe to be unloadable when CONFIG_PROVE_LOCKING by adjusting the
tracking of the global sockets it uses
- Missing unlocking on error path in rxe
- Compute the right number of pages in a MR in rtrs
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
- Fix several syzkaller found bugs:
- Poor parsing of the RDMA_NL_LS_OP_IP_RESOLVE netlink
- GID entry refcount leaking when CM destruction races with
multicast establishment
- Missing refcount put in ib_del_sub_device_and_put()
- Fixup recently introduced uABI padding for 32 bit consistency
- Avoid user triggered math overflow in MANA and AFA
- Reading invalid netdev data during an event
- kdoc fixes
- Fix never-working gid copying in ib_get_gids_from_rdma_hdr
- Typo in bnxt when validating the BAR
- bnxt mis-parsed IB_SEND_IP_CSUM so it didn't work always
- bnxt out of bounds access in bnxt related to the counters on new
devices
- Allocate the bnxt PDE table with the right sizing
- Use dma_free_coherent() correctly in bnxt
- Allow rxe to be unloadable when CONFIG_PROVE_LOCKING by adjusting the
tracking of the global sockets it uses
- Missing unlocking on error path in rxe
- Compute the right number of pages in a MR in rtrs
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/bnxt_re: fix dma_free_coherent() pointer
RDMA/rtrs: Fix clt_path::max_pages_per_mr calculation
IB/rxe: Fix missing umem_odp->umem_mutex unlock on error path
RDMA/bnxt_re: Fix to use correct page size for PDE table
RDMA/bnxt_re: Fix OOB write in bnxt_re_copy_err_stats()
RDMA/bnxt_re: Fix IB_SEND_IP_CSUM handling in post_send
RDMA/core: always drop device refcount in ib_del_sub_device_and_put()
RDMA/rxe: let rxe_reclassify_recv_socket() call sk_owner_put()
RDMA/bnxt_re: Fix incorrect BAR check in bnxt_qplib_map_creq_db()
RDMA/core: Fix logic error in ib_get_gids_from_rdma_hdr()
RDMA/efa: Remove possible negative shift
RTRS/rtrs: clean up rtrs headers kernel-doc
RDMA/irdma: avoid invalid read in irdma_net_event
RDMA/mana_ib: check cqe length for kernel CQs
RDMA/irdma: Fix irdma_alloc_ucontext_resp padding
RDMA/ucma: Fix rdma_ucm_query_ib_service_resp struct padding
RDMA/cm: Fix leaking the multicast GID table reference
RDMA/core: Check for the presence of LS_NLA_TYPE_DGID correctly
-- Fix for build failures in tests that use an empty FIXTURE() seen in
Android's build environment, which uses -D_FORTIFY_SOURCE=3), a build
failure occurs in tests that use an empty FIXTURE().
-- Fix func_traceonoff_triggers.tc sometimes failures on Kunpeng-920 board
resulting from including transient trace file name in checksum compare.
-- Fix to remove available_events requirement from toplevel-enable for
instance as it isn't a valid requirement for this test.
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Merge tag 'linux_kselftest-fixes-6.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
- Fix for build failures in tests that use an empty FIXTURE() seen in
Android's build environment, which uses -D_FORTIFY_SOURCE=3, a build
failure occurs in tests that use an empty FIXTURE()
- Fix func_traceonoff_triggers.tc sometimes failures on Kunpeng-920
board resulting from including transient trace file name in checksum
compare
- Fix to remove available_events requirement from toplevel-enable for
instance as it isn't a valid requirement for this test
* tag 'linux_kselftest-fixes-6.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kselftest/harness: Use helper to avoid zero-size memset warning
selftests/ftrace: Test toplevel-enable for instance
selftests/ftrace: traceonoff_triggers: strip off names
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Merge tag 'block-6.19-20260102' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Scan partition tables asynchronously for ublk, similarly to how nvme
does it. This avoids potential deadlocks, which is why nvme does it
that way too. Includes a set of selftests as well.
- MD pull request via Yu:
- Fix null-pointer dereference in raid5 sysfs group_thread_cnt
store (Tuo Li)
- Fix possible mempool corruption during raid1 raid_disks update
via sysfs (FengWei Shih)
- Fix logical_block_size configuration being overwritten during
super_1_validate() (Li Nan)
- Fix forward incompatibility with configurable logical block size:
arrays assembled on new kernels could not be assembled on older
kernels (v6.18 and before) due to non-zero reserved pad rejection
(Li Nan)
- Fix static checker warning about iterator not incremented (Li Nan)
- Skip CPU offlining notifications on unmapped hardware queues
- bfq-iosched block stats fix
- Fix outdated comment in bfq-iosched
* tag 'block-6.19-20260102' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
block, bfq: update outdated comment
blk-mq: skip CPU offline notify on unmapped hctx
selftests/ublk: fix Makefile to rebuild on header changes
selftests/ublk: add test for async partition scan
ublk: scan partition in async way
block,bfq: fix aux stat accumulation destination
md: Fix forward incompatibility from configurable logical block size
md: Fix logical_block_size configuration being overwritten
md: suspend array while updating raid_disks via sysfs
md/raid5: fix possible null-pointer dereferences in raid5_store_group_thread_cnt()
md: Fix static checker warning in analyze_sbs
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Merge tag 'io_uring-6.19-20260102' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Removed dead argument length for io_uring_validate_mmap_request()
- Use GFP_NOWAIT for overflow CQEs on legacy ring setups rather than
GFP_ATOMIC, which makes it play nicer with memcg limits
- Fix a potential circular locking issue with tctx node removal and
exec based cancelations
* tag 'io_uring-6.19-20260102' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/memmap: drop unused sz param in io_uring_validate_mmap_request()
io_uring/tctx: add separate lock for list of tctx's in ctx
io_uring: use GFP_NOWAIT for overflow CQEs on legacy rings
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Merge tag 'loongarch-fixes-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
"Complete CPUCFG registers definition, set correct protection_map[] for
VM_NONE/VM_SHARED, fix some bugs in the orc stack unwinder, ftrace and
BPF JIT"
* tag 'loongarch-fixes-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
samples/ftrace: Adjust LoongArch register restore order in direct calls
LoongArch: BPF: Enhance the bpf_arch_text_poke() function
LoongArch: BPF: Enable trampoline-based tracing for module functions
LoongArch: BPF: Adjust the jump offset of tail calls
LoongArch: BPF: Save return address register ra to t0 before trampoline
LoongArch: BPF: Zero-extend bpf_tail_call() index
LoongArch: BPF: Sign extend kfunc call arguments
LoongArch: Refactor register restoration in ftrace_common_return
LoongArch: Enable exception fixup for specific ADE subcode
LoongArch: Remove unnecessary checks for ORC unwinder
LoongArch: Remove is_entry_func() and kernel_entry_end
LoongArch: Use UNWIND_HINT_END_OF_STACK for entry points
LoongArch: Set correct protection_map[] for VM_NONE/VM_SHARED
LoongArch: Complete CPUCFG registers definition
shmem:
- docs and MODULE_LICENSE fix
xe:
- Ensure svm device memory is idle before migration completes
- Fix a SVM debug printout
- Use READ_ONCE() / WRITE_ONCE() for g2h_fence
i915:
- Fix eb_lookup_vmas() failure path
nouveau:
- fix prepare_fb warnings
imagination:
- prevent export of protected objects
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Merge tag 'drm-fixes-2026-01-02' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Happy New Year, jetlagged fixes from me, still pretty quiet, xe is
most of this, with i915/nouveau/imagination fixes and some shmem
cleanups.
shmem:
- docs and MODULE_LICENSE fix
xe:
- Ensure svm device memory is idle before migration completes
- Fix a SVM debug printout
- Use READ_ONCE() / WRITE_ONCE() for g2h_fence
i915:
- Fix eb_lookup_vmas() failure path
nouveau:
- fix prepare_fb warnings
imagination:
- prevent export of protected objects"
* tag 'drm-fixes-2026-01-02' of https://gitlab.freedesktop.org/drm/kernel:
drm/i915/gem: Zero-initialize the eb.vma array in i915_gem_do_execbuffer
drm/xe/guc: READ/WRITE_ONCE g2h_fence->done
drm/pagemap, drm/xe: Ensure that the devmem allocation is idle before use
drm/xe/svm: Fix a debug printout
drm/gem-shmem: Fix the MODULE_LICENSE() string
drm/gem-shmem: Fix typos in documentation
drm/nouveau/dispnv50: Don't call drm_atomic_get_crtc_state() in prepare_fb
drm/imagination: Disallow exporting of PM/FW protected objects
The function bfq_bfqq_may_idle() was renamed as bfq_better_to_idle()
in commit 277a4a9b56 ("block, bfq: give a better name to
bfq_bfqq_may_idle"). Update the comment accordingly.
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
io_uring_validate_mmap_request() doesn't use its size_t sz argument, so
remove it.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drm-misc-fixes for v6.19-rc4:
- Documentation fixes and MODULE_LICENSE fix for shmem helper.
- Fix warnings in nouveau prepare_fb().
- Prevent export of protected objects in imagination driver.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/5506492b-02ca-47bc-8712-51e67f0e4b8b@linux.intel.com
An extra blank line gets printed after printing firmware version
because the build date is null terminated. Remove the "\n" from
dev_info() calls to print firmware version and build date to fix
the problem.
Reported-by: Mario Limonciello <superm1@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When building kselftests with a toolchain that enables source
fortification (e.g., Android's build environment, which uses
-D_FORTIFY_SOURCE=3), a build failure occurs in tests that use an
empty FIXTURE().
The root cause is that an empty fixture struct results in
`sizeof(self_private)` evaluating to 0. The compiler's fortification
checks then detect the `memset()` call with a compile-time constant size
of 0, issuing a `-Wuser-defined-warnings` which is promoted to an error
by `-Werror`.
An initial attempt to guard the call with `if (sizeof(self_private) > 0)`
was insufficient. The compiler's static analysis is aggressive enough
to flag the `memset(..., 0)` pattern before evaluating the conditional,
thus still triggering the error.
To resolve this robustly, this change introduces a `static inline`
helper function, `__kselftest_memset_safe()`. This function wraps the
size check and the `memset()` call. By replacing the direct `memset()`
in the `__TEST_F_IMPL` macro with a call to this helper, we create an
abstraction boundary. This prevents the compiler's static analyzer from
"seeing" the problematic pattern at the macro expansion site, resolving
the build failure.
Build Context:
Compiler: Android (14488419, +pgo, +bolt, +lto, +mlgo, based on r584948) clang version 22.0.0 (https://android.googlesource.com/toolchain/llvm-project 2d65e4108033380e6fe8e08b1f1826cd2bfb0c99)
Relevant Options: -O2 -Wall -Werror -D_FORTIFY_SOURCE=3 -target i686-linux-android10000
Test: m kselftest_futex_futex_requeue_pi
Removed Gerrit Change-Id
Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20251224084120.249417-1-wakel@google.com
Signed-off-by: Wake Liu <wakel@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Fixes and New HW Support
- alienware-wmi-wmax: Area-51, x16, and 16X Aurora laptops support
- asus-armoury:
- Fix FA507R PPT data
- Add TDP data for more laptop models
- asus-nb-wmi: Asus Zenbook 14 display toggle key support
- dell-lis3lv02d: Dell Latitude 5400 support
- hp-bioscfg: Fix out-of-bounds array access in ACPI package parsing
- ibm_rtl: Fix EBDA signature search pointer arithmetic
- ideapad-laptop: Reassign KEY_CUT to KEY_SELECTIVE_SCREENSHOT
- intel/pmt:
- Fix kobject memory leak on init failure
- Use valid pointers on error handling path
- intel/vsec: Correct kernel doc comments
- mellanox: mlxbf-pmc: Fix event names
- msi-laptop: Add sysfs_remove_group()
- samsumg-galaxybook: Do not cast pointer to a shorter type
- think-lmi: WMI certificate thumbprint support for ThinkCenter
- uniwill: Tuxedo Book BA15 Gen10 support
The following is an automated shortlog grouped by driver:
alienware-wmi-wmax:
- Add AWCC support for Alienware x16
- Add support for Alienware 16X Aurora
- Add support for new Area-51 laptops
asus-armoury:
- add support for FA608UM
- add support for G615LR
- add support for G835LW
- add support for GA403WR
- add support for GU605CR
- fix ppt data for FA507R
asus-nb-wmi:
- Add keymap for display toggle
dell-lis3lv02d:
- Add Latitude 5400
hp-bioscfg:
- Fix out-of-bounds array access in ACPI package parsing
ibm_rtl:
- fix EBDA signature search pointer arithmetic
ideapad-laptop:
- Reassign KEY_CUT to KEY_SELECTIVE_SCREENSHOT
intel/pmt/discovery:
- use valid device pointer in dev_err_probe
intel/pmt:
- Fix kobject memory leak on init failure
intel/vsec:
- correct kernel-doc comments
mlxbf-pmc:
- Remove trailing whitespaces from event names
msi-laptop:
- add missing sysfs_remove_group()
samsung-galaxybook:
- Fix problematic pointer cast
think-lmi:
- Add WMI certificate thumbprint support for ThinkCenter
uniwill:
- Add TUXEDO Book BA15 Gen10
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Merge tag 'platform-drivers-x86-v6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Ilpo Järvinen:
- alienware-wmi-wmax: Area-51, x16, and 16X Aurora laptops support
- asus-armoury:
- Fix FA507R PPT data
- Add TDP data for more laptop models
- asus-nb-wmi: Asus Zenbook 14 display toggle key support
- dell-lis3lv02d: Dell Latitude 5400 support
- hp-bioscfg: Fix out-of-bounds array access in ACPI package parsing
- ibm_rtl: Fix EBDA signature search pointer arithmetic
- ideapad-laptop: Reassign KEY_CUT to KEY_SELECTIVE_SCREENSHOT
- intel/pmt:
- Fix kobject memory leak on init failure
- Use valid pointers on error handling path
- intel/vsec: Correct kernel doc comments
- mellanox: mlxbf-pmc: Fix event names
- msi-laptop: Add sysfs_remove_group()
- samsumg-galaxybook: Do not cast pointer to a shorter type
- think-lmi: WMI certificate thumbprint support for ThinkCenter
- uniwill: Tuxedo Book BA15 Gen10 support
* tag 'platform-drivers-x86-v6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (22 commits)
platform/x86: asus-armoury: add support for G835LW
platform/x86: asus-armoury: fix ppt data for FA507R
platform/x86/intel/pmt/discovery: use valid device pointer in dev_err_probe
platform/x86: hp-bioscfg: Fix out-of-bounds array access in ACPI package parsing
platform/x86: asus-armoury: add support for G615LR
platform/x86: asus-armoury: add support for FA608UM
platform/x86: asus-armoury: add support for GA403WR
platform/x86: asus-armoury: add support for GU605CR
platform/x86: ideapad-laptop: Reassign KEY_CUT to KEY_SELECTIVE_SCREENSHOT
platform/x86: samsung-galaxybook: Fix problematic pointer cast
platform/x86/intel/pmt: Fix kobject memory leak on init failure
platform/x86/intel/vsec: correct kernel-doc comments
platform/x86: ibm_rtl: fix EBDA signature search pointer arithmetic
platform/x86: msi-laptop: add missing sysfs_remove_group()
platform/x86: think-lmi: Add WMI certificate thumbprint support for ThinkCenter
platform/x86: dell-lis3lv02d: Add Latitude 5400
platform/mellanox: mlxbf-pmc: Remove trailing whitespaces from event names
platform/x86: asus-nb-wmi: Add keymap for display toggle
platform/x86/uniwill: Add TUXEDO Book BA15 Gen10
platform/x86: alienware-wmi-wmax: Add support for Alienware 16X Aurora
...
'available_events' is actually not required by
'test.d/event/toplevel-enable.tc' and its Existence has been tested in
'test.d/00basic/basic4.tc'.
So the require of 'available_events' can be dropped and then we can add
'instance' flag to test 'test.d/event/toplevel-enable.tc' for instance.
Test result show as below:
# ./ftracetest test.d/event/toplevel-enable.tc
=== Ftrace unit tests ===
[1] event tracing - enable/disable with top level files [PASS]
[2] (instance) event tracing - enable/disable with top level files [PASS]
# of passed: 2
# of failed: 0
# of unresolved: 0
# of untested: 0
# of unsupported: 0
# of xfailed: 0
# of undefined(test bug): 0
Link: https://lore.kernel.org/r/20230509203659.1173917-1-zhengyejian1@huawei.com
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
