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2026-07-31tools/rv: Fix exit status when monitor execution failsGabriele Monaco1-12/+12
When running "rv mon" on a monitor that is already enabled, the tool fails to start but incorrectly exits with a success status (0). Fix the exit condition to ensure it returns a failure code on any execution error. Also use the standard EXIT_SUCCESS/EXIT_FAILURE macros throughout the file. Reviewed-by: Nam Cao <namcao@linutronix.de> Link: https://lore.kernel.org/r/20260723074534.43521-3-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
2026-07-31rv: Use generic rv_this for the rv_monitor variable in LTLGabriele Monaco1-3/+3
Align the rv_monitor variable name in LTL to the generic rv_this as it is already done for DA/HA monitors. This improves consistency and eases assumptions across model classes. Reviewed-by: Nam Cao <namcao@linutronix.de> Link: https://lore.kernel.org/r/20260723074534.43521-2-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
2026-07-31Merge branch 'perf/urgent' into perf/core, to pick up fixesIngo Molnar105-279/+2770
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2026-07-31static_call / jump_label: Replace __ASSEMBLY__ with __ASSEMBLER__ in headersThomas Huth1-2/+2
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize now on the __ASSEMBLER__ macro that is provided by the compilers. This is a completely mechanical patch (done with a simple "sed -i" statement). Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260619124936.208519-1-thuth@redhat.com
2026-07-31selftests/filesystems: add mntns cleanup testNoah Orlando4-0/+67
Verify that destroying a mount namespace keeps its mounts connected. Signed-off-by: Noah Orlando <Noah.Orlando@deshaw.com> Link: https://patch.msgid.link/20260706182559.2496448-4-Noah.Orlando@deshaw.com Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
2026-07-31selftests/statmount: Fix file descriptor leak in setup_namespaceMalaya Kumar Rout1-0/+3
In setup_namespace(), f_mountinfo is opened with fopen() at line 115 but is never closed. Multiple ksft_exit_fail_msg() calls exit the program without closing this file descriptor, and the cleanup_namespace() function registered with atexit() also doesn't close it. Add fclose(f_mountinfo) in cleanup_namespace() to ensure the file descriptor is properly closed on both normal and error exit paths, since cleanup_namespace() is already registered as an atexit handler. Signed-off-by: Malaya Kumar Rout <malayarout91@gmail.com> Link: https://patch.msgid.link/20260704120437.99851-1-malayarout91@gmail.com Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
2026-07-31selftests/filesystems: fix spelling error in statmount test commentWang Yan1-1/+1
Fix typo "didnt't" -> "didn't" in statmount_test.c comment. Signed-off-by: Wang Yan <wangyan01@kylinos.cn> Link: https://patch.msgid.link/20260702015428.363642-1-wangyan01@kylinos.cn Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
2026-07-31KVM: arm64: selftest: Add NVHCR_EL2 to get-reg-listMarc Zyngier1-0/+2
Since we now expose a new system register on NV3-capable HW when the guest is exposed to it, add it to the existing checker. FWIW. Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://patch.msgid.link/20260730071022.296811-29-maz@kernel.org Signed-off-by: Oliver Upton <oupton@kernel.org>
2026-07-31KVM: arm64: selftests: Add stage-2 block transition testFuad Tabba2-0/+227
Add a test for the two stage-2 granularity changes dirty logging forces at fault time, asserting the guest completes with no KVM_RUN error. The first scenario collapses a page into a hugetlb-backed block: it writes under logging, re-write-protects the page via GET_DIRTY_LOG, then writes again with logging off. The second splits blocks: it faults in several non-executable 2M blocks, enables logging, then executes in each block so an execute permission fault splits it. It is skipped when CTR_EL0.DIC is set, since mappings are then executable and no execute fault occurs. Both paths make the fault handler allocate under mmu_lock, so a backend that fails to stage that memory returns a KVM_RUN error or crashes the host. The property holds on any host. On a pKVM host, where a non-protected guest uses the pkvm_pgtable_*() backend, it also guards that backend's fault-time staging. Assisted-by: Antigravity:gemini-3.1-pro Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev> Tested-by: Bradley Morgan <include@grrlz.net> # On QEMU arm64 host Test: Bradley Morgan <include@grrlz.net> # On QEMU arm64 host Link: https://patch.msgid.link/20260717130317.1953574-8-fuad.tabba@linux.dev Signed-off-by: Oliver Upton <oupton@kernel.org>
2026-07-30KVM: arm64: selftests: Add a userspace watchpoint testFuad Tabba1-0/+41
debug-exceptions covers guest self-hosted debug and userspace single-step, but not a userspace (KVM_GUESTDBG_USE_HW) watchpoint, whose KVM_EXIT_DEBUG reports the accessed address in debug.arch.far. Add a test that installs a host-directed write watchpoint and checks that the reported address matches the accessed variable. Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev> Link: https://patch.msgid.link/20260726143643.303456-3-fuad.tabba@linux.dev Signed-off-by: Oliver Upton <oupton@kernel.org>
2026-07-30KVM: arm64: Expose PMMIR_EL1.SLOTS under strict PMUv3 UAPICongkai Tan1-0/+1
Introduce a new field pmmir_slots in struct kvm_arch to store PMMIR_EL1.SLOTS. It only saves the actual hardware PMU value when the VMM explicitly selects a PMU under KVM_ARM_VCPU_PMU_V3_STRICT. Otherwise, it stays 0 after allocation. Use this field to implement guest access, userspace get, and userspace set for PMMIR_EL1: - access_pmmir(): uses the value in kvm->arch.pmmir_slots directly. If the VMM selected a PMU and KVM_ARM_VCPU_PMU_V3_STRICT is set, the guest can correctly read the underlying core's SLOTS. Otherwise, it continues to read 0 since the true SLOTS value can be nondeterministic. - get_pmmir(): same as access_pmmir(). - set_pmmir(): only the SLOTS field is writable; a value setting any other bit is rejected with -EINVAL, since get_pmmir() returns SLOTS zero-extended. A value of 0 resets kvm->arch.pmmir_slots to 0 for backward compatibility, as the register is RAZ in older KVM, a value matching the current SLOTS is accepted as a no-op, and anything else is rejected with -EINVAL. Once the VM has run PMMIR_EL1 is immutable, so a mismatching write then returns -EBUSY. The register is now exposed via KVM_GET_REG_LIST for PMUv3 vCPUs, so add it to the get-reg-list selftest's PMU register list. Signed-off-by: Congkai Tan <congkai@amazon.com> Reviewed-by: Geoff Blake <blakgeof@amazon.com> Reviewed-by: Haris Okanovic <harisokn@amazon.com> Reviewed-by: Stanislav Spassov <stanspas@amazon.de> Co-developed-by: Oliver Upton <oupton@kernel.org> Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev> Tested-by: Fuad Tabba <fuad.tabba@linux.dev> Link: https://patch.msgid.link/20260722202702.4165917-2-congkai@amazon.com Signed-off-by: Oliver Upton <oupton@kernel.org>
2026-07-30tools/mm/page_owner_sort: bound pattern output copiesYichong Chen1-6/+21
search_pattern() copies a regex capture into caller-provided buffers without knowing their sizes. Several callers pass fixed-size buffers, including FIELD_BUFF and TASK_COMM_LEN. Pass the destination size to search_pattern(), reject captures that do not fit before copying them, and terminate the output string inside search_pattern(). Link: https://lore.kernel.org/20260629014316.130307-4-chenyichong@uniontech.com Signed-off-by: Yichong Chen <chenyichong@uniontech.com> Cc: Vishal Moola <vishal.moola@gmail.com> Cc: Ye Liu <ye.liu@linux.dev> Cc: Zhen Ni <zhen.ni@easystack.cn> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30tools/mm/page_owner_sort: free per-record allocationsYichong Chen1-2/+18
add_list() allocates comm and txt for each page owner record, but the cleanup path only frees the outer list array. This leaks both buffers for every retained record. Free partial allocations in add_list(), discarded records during culling, and retained records on exit. Link: https://lore.kernel.org/20260629014316.130307-3-chenyichong@uniontech.com Signed-off-by: Yichong Chen <chenyichong@uniontech.com> Reviewed-by: Vishal Moola <vishal.moola@gmail.com> Cc: Ye Liu <ye.liu@linux.dev> Cc: Zhen Ni <zhen.ni@easystack.cn> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30tools/mm/page_owner_sort: return explicit filter resultsYichong Chen1-9/+31
Patch series "tools/mm/page_owner_sort: fix filtering and cleanup issues", v5. Patch 1 renames is_need() to filter_record() and makes the filter path return explicit results. Patch 2 fixes the per-record allocation leaks. Patch 3 bounds search_pattern() output copies, addressing the pre-existing issue reported by Sashiko/AI review. This patch (of 3): Rename is_need() to filter_record() and make the filter path return explicit error, skip, and match results. This lets callers distinguish allocation failures from records that simply do not match active filters. Link: https://lore.kernel.org/20260629014316.130307-1-chenyichong@uniontech.com Link: https://lore.kernel.org/20260629014316.130307-2-chenyichong@uniontech.com Signed-off-by: Yichong Chen <chenyichong@uniontech.com> Reviewed-by: Vishal Moola <vishal.moola@gmail.com> Cc: Ye Liu <ye.liu@linux.dev> Cc: Zhen Ni <zhen.ni@easystack.cn> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30mm: remove the __GFP_NO_OBJ_EXT flagVlastimil Babka (SUSE)1-7/+0
All users of the flag are converted to SLAB_ALLOC_NO_RECURSE or ALLOC_NO_CODETAG (from __GFP_NO_CODETAG which reused the NO_OBJ_EXT bit). Free up the flag bit. [Rebased onto __GFP_NO_CODETAG removal] Link: https://lore.kernel.org/20260703-alloc-trylock-v5-16-c87b714e19d3@google.com Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org> Signed-off-by: Brendan Jackman <jackmanb@google.com> Acked-by: Hao Ge <hao.ge@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/damon/drgn_dump_damon_status: do not dump nr_accesses_bpSJ Park1-1/+0
drgn_dump_damon_status is dumping nr_accesses_bp field for future use case. nr_accesses_bp is not being used for a real purpose, though. Hence there will be no future test for it. Do not dump it. Link: https://lore.kernel.org/20260630040812.149729-13-sj@kernel.org Signed-off-by: SJ Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/mm/uffd: don't treat UFFDIO_COPY -ENOENT as a failureMike Rapoport (Microsoft)1-2/+7
Non-cooperarive uffd events are inherently racy and can happen in parallel with other userfaultfd operations. During event tests in uffd-unit-tests, the uffd monitor calls UFFDIO_UNREGISTER upon receiving UFFD_EVENT_REMOVE. In parallel, the faulting_process() verifies that the removed memory is actually zeroed. If a verification read wins the race with UFFDIO_UNREGISTER, it causes a missing fault that uffd monitor would receive after UFFDIO_UNREGISTER is complete. The monitor resolves the fault using UFFDIO_COPY that fails with -ENOENT which means that VMA has been changed (see commit 27d02568f529 ("userfaultfd: mcopy_atomic: return -ENOENT when no compatible VMA found")). Treat -ENOENT returned by UFFDIO_COPY as non-fatal, the same way -EEXIST is treated for concurrent faults, and don't fail the test. Link: https://lore.kernel.org/20260701200932.1470525-1-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Lorenzo Stoakes <ljs@kernel.org> Reviewed-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Xu <peterx@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/mm: fix clone cleartid race in pkey sighandler testsHongfu Li1-8/+12
Passing a stack-local child_pid to clone() with CLONE_CHILD_CLEARTID is unsafe: the kernel clears that address when the child exits, which may happen after the test function has returned and the stack slot has been reused. Neither testcase uses the settid/cleartid pointers for synchronization. Drop CLONE_PARENT_SETTID and CLONE_CHILD_CLEARTID and pass NULL for the clone tid arguments. Wait for the clone child to exit via tkill in test_sigsegv_handler_with_different_pkey_for_stack(), matching test_pkru_sigreturn(), so the detached thread cannot overlap with the next testcase. Link: https://lore.kernel.org/20260706081600.3570203-7-lihongfu@kylinos.cn Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Cc: David Hildenbrand <david@kernel.org> Cc: Joey Gouly <joey.gouly@arm.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Keith Lucas <keith.lucas@oracle.com> Cc: Kevin Brodsky <kevin.brodsky@arm.com> Cc: Liam R. Howlett (Oracle) <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Ross Zwisler <zwisler@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Yury Khrustalev <yury.khrustalev@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/mm: add missing pthread_create() return checks in pkey testsHongfu Li1-2/+10
Add missing pthread_create() return checks in pkey sighandler tests to avoid hanging in pthread_cond_wait() when thread creation fails. Link: https://lore.kernel.org/20260706081600.3570203-6-lihongfu@kylinos.cn Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Liam R. Howlett (Oracle) <liam@infradead.org> Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com> Tested-by: Kevin Brodsky <kevin.brodsky@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Joey Gouly <joey.gouly@arm.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Keith Lucas <keith.lucas@oracle.com> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Ross Zwisler <zwisler@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Yury Khrustalev <yury.khrustalev@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/mm: add missing mmap() return checks in pkey testsHongfu Li3-6/+10
Add missing checks against mmap() return value, replace (void *)-1 with MAP_FAILED for better readability and consistency. Link: https://lore.kernel.org/20260706081600.3570203-5-lihongfu@kylinos.cn Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Liam R. Howlett (Oracle) <liam@infradead.org> Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com> Tested-by: Kevin Brodsky <kevin.brodsky@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Joey Gouly <joey.gouly@arm.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Keith Lucas <keith.lucas@oracle.com> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Ross Zwisler <zwisler@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Yury Khrustalev <yury.khrustalev@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/mm: use pkey_assert on clone_raw failure in pkey testHongfu Li1-2/+2
Use pkey_assert(0) instead of perror("clone") when clone_raw() fails. The old path only printed an error and continued; the test now exits via pkey_assert() on failure so it does not hang or proceed with an invalid child. Link: https://lore.kernel.org/20260706081600.3570203-4-lihongfu@kylinos.cn Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Liam R. Howlett (Oracle) <liam@infradead.org> Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com> Tested-by: Kevin Brodsky <kevin.brodsky@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Joey Gouly <joey.gouly@arm.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Keith Lucas <keith.lucas@oracle.com> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Ross Zwisler <zwisler@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Yury Khrustalev <yury.khrustalev@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/mm: unify pkey sighandler selftest assertions and tracingHongfu Li1-45/+44
Add per-test tracing to the pkey signal-handler selftest and use pkey_assert() for error handling. Each test enables tracing at start and disables it at end; on failure, pkey_assert() calls abort_hooks() to turn tracing off so ftrace is not left enabled. Link: https://lore.kernel.org/20260706081600.3570203-3-lihongfu@kylinos.cn Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Liam R. Howlett (Oracle) <liam@infradead.org> Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com> Tested-by: Kevin Brodsky <kevin.brodsky@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Joey Gouly <joey.gouly@arm.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Keith Lucas <keith.lucas@oracle.com> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Ross Zwisler <zwisler@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Yury Khrustalev <yury.khrustalev@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/mm: move pkey selftest helpers to pkey_util.cHongfu Li3-88/+93
Patch series "selftests/mm: refactor pkey helpers and fix mmap error handling", v10. The main changes in this series are to refactor shared tracing and assertion helpers into a common file, unify both pkey selftests on pkey_assert() and per-test tracing for consistent diagnostics, and add missing mmap() return checks with MAP_FAILED used throughout for readability and consistency. This patch (of 10): Move pkey selftest debugging helpers into shared code so both pkey selftests can use the same tracing and abort-hook logic. Also fix cat_into_file() to print file, not str, in the open() failure message. Link: https://lore.kernel.org/20260706081600.3570203-1-lihongfu@kylinos.cn Link: https://lore.kernel.org/20260706081600.3570203-2-lihongfu@kylinos.cn Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Liam R. Howlett (Oracle) <liam@infradead.org> Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com> Tested-by: Kevin Brodsky <kevin.brodsky@arm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Joey Gouly <joey.gouly@arm.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Keith Lucas <keith.lucas@oracle.com> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Ross Zwisler <zwisler@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Yury Khrustalev <yury.khrustalev@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/damon/sysfs.sh: test all files in quota goal dirSJ Park1-0/+14
DAMON sysfs interface for DAMOS quota has quite extended since its initial introduction. The test case for that in DAMON sysfs interface essential file operations test (sysfs.sh) has not accordingly extended, though. Extend the test case to test all existing files. Link: https://lore.kernel.org/20260630141726.92246-8-sj@kernel.org Signed-off-by: SJ Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/damon/sysfs.sh: test dests dirSJ Park1-0/+24
DAMON selftest interface essential file operations test (sysfs.sh) is not testing DAMOS dests/ directory. Add the test. Link: https://lore.kernel.org/20260630141726.92246-7-sj@kernel.org Signed-off-by: SJ Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/damon/sysfs.sh: test {core,ops}_filters/ directoriesSJ Park1-4/+24
DAMON sysfs interface essential file operations test (sysf.sh) is not testing DAMOS {core,ops}_filters directories. Add the tests. Link: https://lore.kernel.org/20260630141726.92246-6-sj@kernel.org Signed-off-by: SJ Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests/damon/sysfs.sh: test multiple probe dirs creationSJ Park1-0/+5
DAMON sysfs essential file operations test (sysfs.sh) was extended to test DAMON probes sysfs directory, by commit 14885da09b0f ("selftests/damon/sysfs.sh: test probes dir"). Unlike other DAMON sysfs files, it is testing only a single directory case. Extend it for multiple directories. Link: https://lore.kernel.org/20260630141726.92246-5-sj@kernel.org Signed-off-by: SJ Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-07-30selftests: net: add coverage for fdb nexthop dst_portJack Ma2-2/+121
Add coverage for the new per-nexthop VXLAN destination port (NHA_DST_PORT). In fib_nexthops.sh, new ipv4_fdb_port_fcnal() and ipv6_fdb_port_fcnal() tests check that a dst_port is accepted on an fdb nexthop that has a gateway and echoed back on dump, that it is rejected without a gateway and rejected when zero, that a group may hold legs that differ only in UDP port, and that a portless fdb nexthop omits the attribute. The tests SKIP when iproute2 lacks the "dst_port" keyword. In test_vxlan_nh.sh, basic_tx_common() gains a second fdb nexthop group whose nexthop carries a destination port that differs from the VXLAN device default, plus a flower filter keyed on that port, to confirm the per-nexthop port is used on the wire. The test now requires an iproute2 with dst_port support. Signed-off-by: Jack Ma <jack4it@gmail.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20260724-b4-vxlan-fdb-port-v5-3-cd1c6aeee058@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski29-86/+764
Cross-merge networking fixes after downstream PR (net-7.2-rc6). No conflicts. Adjacent changes: net/ipv4/route.c dbc3791e3b24 ("net: do not send ICMP/NDISC Redirects when peer allocation fails") 7804eaa057fe ("ipv4: snapshot dst.dev in ip_rt_send_redirect() and ip_rt_get_source()") drivers/net/tun.c 23dad2d088df ("tun: no longer rely on RTNL in tun_fill_info()") c3da92af07ea ("Revert "tun/tap: add ptr_ring consume helper with netdev queue wakeup"") drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c 3bd438a58e91 ("octeontx2-af: Block VFs from clobbering special CGX PKIND state") 5ba5611ef946 ("octeontx2-af: reserve 4 PKINDs for skip-size custom use") drivers/net/wireless/ath/ath12k/core.h drivers/net/wireless/ath/ath12k/mac.c drivers/net/wireless/ath/ath12k/peer.c 469d7e6077c1 ("wifi: ath12k: resolve PENDING ML peer ID from MLO_PEER_MAP HTT event") 378e659029d5 ("wifi: ath12k: introduce host_alloc_ml_id hardware parameter") c42b27336eef ("wifi: ath12k: fix survey indexing across bands") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-30resolve_btfids: Enforce consistent kfunc flags across BTF ID setsIhor Solodrai1-4/+13
A kfunc may be listed in several BTF ID sets, which is expected because different kfuncs are available to BPF programs depending on their type. However kfunc flags across different BTF ID sets must be consistent [1]. The flags should be considered a part of the kfunc declaration, because they influence its BTF representation and verifier handling. Enforce the kfunc flag consistency in resolve_btifds by hard failing on error and blocking kernel (or module) build. [1] https://lore.kernel.org/bpf/9b2196dd-443b-4632-ae11-030cdbdc59b4@linux.dev/ Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20260722233518.778854-9-ihor.solodrai@linux.dev
2026-07-30resolve_btfids: Discover kfuncs from BTF ID setsIhor Solodrai1-60/+29
collect_kfuncs() currently uses bpf_kfunc decl tags to identify the list of kfuncs. The decl tags are generated by pahole, which makes current implementation implicitly rely on those tags being generated. The authoritative source, used by the the BPF verifier for kfunc registration, of functions being BPF kfuncs are BTF_KFUNCS_START()/END() declarations. These are BTF_ID_SET8 under the hood. Currently resolve_btfids reads kfunc flags from these sets, and populates them with BTF IDs. Implement kfunc discovery from BTF_ID_SET8 symbols in resolve_btfids, removing the dependency on pahole's emmission of decl tags. Walk BTF_ID_KIND_SET8 sets, and use the address-to-symbol index to look up set entry's BTF_ID symbol name (before .BTF_ids is patched), recording the paired flags directly. This makes find_kfunc_flags() helper unnecessary, so it's removed. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20260722233518.778854-8-ihor.solodrai@linux.dev
2026-07-30resolve_btfids: Fix the _impl lookup for module BTFIhor Solodrai1-1/+1
process_kfunc_with_implicit_args() skips generating <name>_impl function when one already exists for backwards compatibility. It uses btf__find_by_name_kind(), which searches the base BTF before the split BTF. When resolve_btfids processes a module, a same-named _impl in vmlinux would be found and the module's own counterpart would not be created. Fix by using btf__find_by_name_kind_own() for the lookup. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20260722233518.778854-6-ihor.solodrai@linux.dev
2026-07-30libbpf: Export btf__find_by_name_kind_own()Ihor Solodrai3-2/+3
btf__find_by_name_kind() searches the base BTF before the split BTF, so in case of a name collision between base and split it always returns a base type. Tools that process split BTF may need to restrict a lookup to the split's own types. The internal helper btf__find_by_name_kind_own() already does exactly that. Make it a public API. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20260722233518.778854-5-ihor.solodrai@linux.dev
2026-07-30resolve_btfids: Keep collected kfuncs in a rbtreeIhor Solodrai1-8/+42
Store collected kfuncs in a rbtree keyed by BTF ID instead of a dynamically grown array. This allows for efficient deduplication for kfuncs declared in multiple sets, which is needed for subsequent patches [1]. [1] https://lore.kernel.org/bpf/CAEf4BzaLzX3mXvQzxv+gbmZOh84XvYofLjMSWFYghNjS-ohEZg@mail.gmail.com/ Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20260722233518.778854-4-ihor.solodrai@linux.dev
2026-07-30resolve_btfids: Index BTF ID symbols by addressIhor Solodrai1-23/+71
Keep an address-sorted index of parsed .BTF_ids symbols so that the original BTF_ID symbol name can be recovered from an entry address. Use the index in find_kfunc_flags() to scan BTF_SET8_KFUNCS entries directly and match each entry back to the requested kfunc. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20260722233518.778854-3-ihor.solodrai@linux.dev
2026-07-30resolve_btfids: Implement generic ensure_mem() to grow arraysIhor Solodrai1-22/+33
push_*() helpers in resolve_btfids contain copy-pasted array growth logic. Factor it out into ensure_mem() - a simplified variant of libbpf_ensure_mem(), and use it in the helpers. Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20260722233518.778854-2-ihor.solodrai@linux.dev
2026-07-30Merge tag 'net-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds5-23/+230
Pull networking fixes from Paolo Abeni: "This is again larger than usual: the backlog accumulated in the past weeks is not done yet. I'm not aware of any known pending regression. Including fixes from netfilter, Bluetooth, WiFi and CAN. Current release - regressions: - bluetooth: remove unnecessary hci_conn_get in create_conn_sync - can: isotp: fix timer drain order, wakeup handling and tx_gen ordering - eth: - tun/vhost: revert avoid ptr_ring tail-drop when a qdisc is present Previous releases - regressions: - core: do not send ICMP/NDISC Redirects when peer allocation fails - ipv6: take nexthop lock for f6i_list walks in replace check and notify - wifi: fix an ath12k MLO regression impacting WCN7850/QCC2072. - netfilter: nf_tables: make nft_object rhltable per table - af_unix: fix listen() succeeding on sockets in the wrong state - openvswitch: fix potential UAF on meter attach failure - bluetooth: - fix advertising data UAFs - avoid deadlocks in iso_sock_timeout - smc: fix socket use-after-free during link group termination - dpll: use pin owner's dpll ref for pin-level attribute reporting - eth: - veth: convert frag_list skbs before running XDP - ice: wait for reset completion in ice_resume() - igc: remove napi_synchronize() in igc_down() - vxlan: use pskb_network_may_pull() for transmit path header pulls Previous releases - always broken: - xsk: fix AF_XDP multi-buffer Tx descriptor reclaim - psp: fix NULL genl_sock deref race with concurrent netns teardown - netfilter: widen NAT rewrite delta to s32 in sip_help_tcp() - can: peak_usb: fix double free of transfer buffer on URB submit error - dibs: fix use-after-free of dmb_node in loopback attach/detach/unregister - sctp: prevent peer transport count overflow - dsa: mt7530: error out on failed reads in MT7531 PHY polling - eth: - idpf: bound interrupt-vector register fill to the allocated array" * tag 'net-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (156 commits) qede: sync udp_tunnel ports outside qede_lock in the recovery path net: openvswitch: fix potential UAF on meter attach failure octeontx2-pf: Set correct sequence for carrier off and tx queue stop net: libwx: fix FDIR ATR queue mismatch for software VLAN packets net: dsa: realtek: use devm_mutex_init for l2_lock net: dsa: realtek: use devm_mutex_init for vlan_lock net: dsa: realtek: use devm_mutex_init for regmap lock net: dsa: realtek: rtl8365mb: use devm_mutex_init for mib_lock ptp: netc: fix potential interrupt storm caused by incorrect unbind order net: mana: Return error code from mana_create_rxq() net: openvswitch: fix skb leak on flow key update failure during ct net: openvswitch: fix skb leak on flow key update failure during recirculation net: stmmac: Fix E2E delay mechanism net: dsa: mt7530: error out on failed reads in MT7531 PHY polling net: dsa: mt7530: error out on failed reads in ATC/VTCR command polling net: dsa: mt7530: check bus->read() errors in the MDIO regmap backend Revert "tun/tap: add ptr_ring consume helper with netdev queue wakeup" Revert "vhost-net: wake queue of tun/tap after ptr_ring consume" Revert "ptr_ring: move free-space check into separate helper" Revert "tun/tap & vhost-net: avoid ptr_ring tail-drop when a qdisc is present" ...
2026-07-30selftests/zram: fix kernel_gte() for POSIX shCheng-Han Wu1-1/+1
Commit fc4eb486a59d ("selftests/zram: Skip max_comp_streams interface on newer kernel") added kernel_gte() to zram_lib.sh. The function uses the bash-specific [[ ... ]] conditional, but zram selftests source this file while running under /bin/sh. On systems where /bin/sh is dash, such as Debian, the following test fails: dash -c ' kernel_major=6; kernel_minor=1; major=6; minor=0 if [ $kernel_major -gt $major ]; then echo ok elif [[ $kernel_major -eq $major && $kernel_minor -ge $minor ]]; then echo ok fi' with: dash: 5: [[: not found Use separate POSIX test expressions joined by && instead. Fixes: fc4eb486a59d ("selftests/zram: Skip max_comp_streams interface on newer kernel") Signed-off-by: Cheng-Han Wu <hank20010209@gmail.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-07-30tools/nolibc/powerpc: mark ctr and xer as clobbered by system callThomas Weißschuh1-1/+1
The system call can clobber the ctr and xer registers. Make sure the compiler takes this into account. The missing clobbers only seem to be an issue with newer compilers. Fixes: 0cb0675ec37e ("tools/nolibc: add support for powerpc") Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://patch.msgid.link/20260727-nolibc-powerpc-clobber-v1-1-e0911cc99ce1@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2026-07-29selftests/net: test PACKET_IGNORE_OUTGOINGJoe Damato2-2/+87
Test that setsockopt PACKET_IGNORE_OUTGOING: - works with valid values (0 and 1), - rejects values outside of that range, and When enabled for a loopback sniffer, it only produces 1 copy of the packet (rx) instead of two copies (tx and rx). Use sll_pkttype to check the direction of the packet to ensure the correct packet is sniffed. Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Joe Damato <joe@dama.to> Link: https://patch.msgid.link/20260728160935.4128982-6-joe@dama.to Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-29selftests/net: psock_snd: Verify sll_pkttypeJoe Damato1-3/+14
Extend do_rx() to take an expected packet type. Existing callers pass -1 to skip the check. Signed-off-by: Joe Damato <joe@dama.to> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260728160935.4128982-5-joe@dama.to Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-29selftests/net: psock_snd: unify on recvmsg()Joe Damato1-17/+11
Don't maintain two RX paths in do_rx(). Unify on recvmsg() and pass aux data only when needed. No functional change. Signed-off-by: Joe Damato <joe@dama.to> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260728160935.4128982-4-joe@dama.to Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-29selftests/net: psock: Generalize stats checkJoe Damato1-5/+6
Generalize stats check code so that callers can specify the expected packets. Signed-off-by: Joe Damato <joe@dama.to> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260728160935.4128982-3-joe@dama.to Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-29selftests/net: psock: Generalize psock bindJoe Damato1-2/+7
Generalize packet socket binding so that types other than ETH_P_IP can be used. Signed-off-by: Joe Damato <joe@dama.to> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260728160935.4128982-2-joe@dama.to Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-29KVM: riscv: selftests: add Zicfiss/Zicfilp extension to get-reg-list testInochi Amaoto1-0/+69
The KVM RISC-V allows Zicfiss/Zicfilp extensions for Guest/VM so add these extensions to get-reg-list test. Assisted-by: YuanSheng:claude-4.7-opus Co-developed-by: Quan Zhou <zhouquan@iscas.ac.cn> Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn> Signed-off-by: Inochi Amaoto <inochiama@gmail.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20260713010302.303278-9-inochiama@gmail.com Signed-off-by: Anup Patel <anup@brainfault.org>
2026-07-29KVM: selftests: Trigger L2->L1 exits stress save+restore and #PF testYosry Ahmed2-4/+45
Extend the testing coverage in L2 by forcing a nested VM-Exit from L2 to L1 right after restore on every other iteration. Forcing a nested VM-Exit while L0 has control (e.g. without explicitly running L2 and making a hypercall) is valuable, as it often happens during live migration (e.g. L1 timer interrupt fires by the time the VM lands on the destination). To force the nested VM-Exit inject a #UD in to the saved vCPU state, and intercept #UD from L1. With this change, the test reliably reproduces the CR2 bug fixed by commit 5c247d08bc81 ("KVM: nSVM: Use vcpu->arch.cr2 when updating vmcb12 on nested #VMEXIT") -- at least on Milan, Genoa, and Turin CPUs. Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Yosry Ahmed <yosry@kernel.org> Link: https://patch.msgid.link/20260728174232.2423257-14-yosry@kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-07-29KVM: selftests: Support running stress save+restore and #PF test in L2Yosry Ahmed1-3/+53
Extend the stress test to allow running the access+#PF code in L2 instead of L1 by adding proper L1 guest code to bootstrap L2. By default, the test runs in L2 after running in L1 if nested is supported. Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Yosry Ahmed <yosry@kernel.org> Link: https://patch.msgid.link/20260728174232.2423257-13-yosry@kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-07-29KVM: selftests: Trigger save+restore randomly in the #PF stress testYosry Ahmed1-7/+49
Instead of an explicit GUEST_SYNC() after each access+#PF, run another thread that keeps sending SIGUSR to the vCPU thread, essentially triggering exits to userspace and save+restore on random points in guest execution. This makes the test a lot more meaningful as it opens the door to exercising race conditions between #PF handling in the guest and save+restore in the host. The signals are ignored using SIG_IGN outside of __vcpu_run() to avoid interrupting other ioctls/sysctls performed by the test. Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Yosry Ahmed <yosry@kernel.org> Link: https://patch.msgid.link/20260728174232.2423257-12-yosry@kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-07-29KVM: selftests: Add basic stress test for save+restore and #PF handlingYosry Ahmed3-0/+174
Add a basic stress test for handling #PFs in a guest while the host is doing save+restore cycles. The guest periodically accesses non-present memory causing a #PF, and the #PF handler walks the page tables and updates the PTE to be present, like a proper #PF handler. After every access (and #PF), the guest triggers a sync and the test performs save+restore of the VM. This is not very meaningful as save+restore are performed after the access and #PF handling complete, but following changes will change that. Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Yosry Ahmed <yosry@kernel.org> Link: https://patch.msgid.link/20260728174232.2423257-11-yosry@kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com>
2026-07-29KVM: selftests: Do not intercept #PF by default in nVMX testsYosry Ahmed1-1/+1
init_vmcs_control_fields() sets PFEC_MASK and PFEC_MATCH so that they never match, which reverses the meaning of the PF_VECTOR bit in EXCEPTION_BITMAP (which is zeroed), effectively enabling #PF interception by default. The relevant part of the SDM describes this: When a page fault occurs, a processor consults (1) bit 14 of the exception bitmap; (2) the error code produced with the page fault [PFEC]; (3) the page-fault error-code mask field [PFEC_MASK]; and (4) the page-fault error-code match field [PFEC_MATCH]. It checks if PFEC & PFEC_MASK = PFEC_MATCH. If there is equality, the specification of bit 14 in the exception bitmap is followed (for example, a VM exit occurs if that bit is set). If there is inequality, the meaning of that bit is reversed (for example, a VM exit occurs if that bit is clear). Clear PFEC_MATCH such that there is equality, and the #PF bit in the exception bitmap is followed, so that #PFs are not intercepted by default, same as every other exception. This also allows tests to set the #PF bit in the exception bitmap if they want to intercept #PFs, without having to muck with the PFEC_{MASK,MATCH} fields. Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Yosry Ahmed <yosry@kernel.org> Link: https://patch.msgid.link/20260728174232.2423257-10-yosry@kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com>
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