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2025-07-10kselftest/mm: clarify errors for pipe()Mark Brown1-2/+2
Patch series "selftests/mm: Tweaks to the cow test". A collection of non-functional updates from David Hildenbrand's review. This patch (of 4): Specify that errors reported from pipe() failures are the result of failures. Link: https://lkml.kernel.org/r/20250610-selftest-mm-cow-tweaks-v1-0-43cd7457500f@kernel.org Link: https://lkml.kernel.org/r/20250610-selftest-mm-cow-tweaks-v1-1-43cd7457500f@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org> Suggested-by: David Hildenbrand <david@redhat.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Mark Brown <broonie@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-10tools/testing/selftests: add VMA merge tests for KSM mergeLorenzo Stoakes1-0/+78
Add test to assert that we have now allowed merging of VMAs when KSM merging-by-default has been set by prctl(PR_SET_MEMORY_MERGE, ...). We simply perform a trivial mapping of adjacent VMAs expecting a merge, however prior to recent changes implementing this mode earlier than before, these merges would not have succeeded. Assert that we have fixed this! Link: https://lkml.kernel.org/r/6dec7aabf062c6b121cfac992c9c716cefdda00c.1748537921.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev> Tested-by: Chengming Zhou <chengming.zhou@linux.dev> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jan Kara <jack@suse.cz> Cc: Jann Horn <jannh@google.com> Cc: Stefan Roesch <shr@devkernel.io> Cc: Xu Xin <xu.xin16@zte.com.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-10mm: prevent KSM from breaking VMA merging for new VMAsLorenzo Stoakes1-0/+11
If a user wishes to enable KSM mergeability for an entire process and all fork/exec'd processes that come after it, they use the prctl() PR_SET_MEMORY_MERGE operation. This defaults all newly mapped VMAs to have the VM_MERGEABLE VMA flag set (in order to indicate they are KSM mergeable), as well as setting this flag for all existing VMAs and propagating this across fork/exec. However it also breaks VMA merging for new VMAs, both in the process and all forked (and fork/exec'd) child processes. This is because when a new mapping is proposed, the flags specified will never have VM_MERGEABLE set. However all adjacent VMAs will already have VM_MERGEABLE set, rendering VMAs unmergeable by default. To work around this, we try to set the VM_MERGEABLE flag prior to attempting a merge. In the case of brk() this can always be done. However on mmap() things are more complicated - while KSM is not supported for MAP_SHARED file-backed mappings, it is supported for MAP_PRIVATE file-backed mappings. These mappings may have deprecated .mmap() callbacks specified which could, in theory, adjust flags and thus KSM eligibility. So we check to determine whether this is possible. If not, we set VM_MERGEABLE prior to the merge attempt on mmap(), otherwise we retain the previous behaviour. This fixes VMA merging for all new anonymous mappings, which covers the majority of real-world cases, so we should see a significant improvement in VMA mergeability. For MAP_PRIVATE file-backed mappings, those which implement the .mmap_prepare() hook and shmem are both known to be safe, so we allow these, disallowing all other cases. Also add stubs for newly introduced function invocations to VMA userland testing. [lorenzo.stoakes@oracle.com: correctly invoke late KSM check after mmap hook] Link: https://lkml.kernel.org/r/5861f8f6-cf5a-4d82-a062-139fb3f9cddb@lucifer.local Link: https://lkml.kernel.org/r/3ba660af716d87a18ca5b4e635f2101edeb56340.1748537921.git.lorenzo.stoakes@oracle.com Fixes: d7597f59d1d3 ("mm: add new api to enable ksm per process") # please no backport! Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev> Acked-by: David Hildenbrand <david@redhat.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Xu Xin <xu.xin16@zte.com.cn> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: Jan Kara <jack@suse.cz> Cc: Jann Horn <jannh@google.com> Cc: Stefan Roesch <shr@devkernel.io> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-10tools/mm: add script to display page state for a given PID and VADDRYe Liu1-0/+169
Introduces a new drgn script, `show_page_info.py`, which allows users to analyze the state of a page given a process ID (PID) and a virtual address (VADDR). This can help kernel developers or debuggers easily inspect page-related information in a live kernel or vmcore. The script extracts information such as the page flags, mapping, and other metadata relevant to diagnosing memory issues. Output example: sudo ./show_page_info.py 1 0x7fc988181000 PID: 1 Comm: systemd mm: 0xffff8d22c4089700 RAW: 0017ffffc000416c fffff939062ff708 fffff939062ffe08 ffff8d23062a12a8 RAW: 0000000000000000 ffff8d2323438f60 0000002500000007 ffff8d23203ff500 Page Address: 0xfffff93905664e00 Page Flags: PG_referenced|PG_uptodate|PG_lru|PG_head|PG_active| PG_private|PG_reported|PG_has_hwpoisoned Page Size: 4096 Page PFN: 0x159938 Page Physical: 0x159938000 Page Virtual: 0xffff8d2319938000 Page Refcount: 37 Page Mapcount: 7 Page Index: 0x0 Page Memcg Data: 0xffff8d23203ff500 Memcg Name: init.scope Memcg Path: /sys/fs/cgroup/memory/init.scope Page Mapping: 0xffff8d23062a12a8 Page Anon/File: File Page VMA: 0xffff8d22e06e0e40 VMA Start: 0x7fc988181000 VMA End: 0x7fc988185000 This page is part of a compound page. This page is the head page of a compound page. Head Page: 0xfffff93905664e00 Compound Order: 2 Number of Pages: 4 Link: https://lkml.kernel.org/r/20250530055855.687067-1-ye.liu@linux.dev Signed-off-by: Ye Liu <liuye@kylinos.cn> Tested-by: SeongJae Park <sj@kernel.org> Reviewed-by: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Omar Sandoval <osandov@osandov.com> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-10kallsyms: fix build without execinfoAchill Gilgenast1-0/+4
Some libc's like musl libc don't provide execinfo.h since it's not part of POSIX. In order to fix compilation on musl, only include execinfo.h if available (HAVE_BACKTRACE_SUPPORT) This was discovered with c104c16073b7 ("Kunit to check the longest symbol length") which starts to include linux/kallsyms.h with Alpine Linux' configs. Link: https://lkml.kernel.org/r/20250622014608.448718-1-fossdd@pwned.life Fixes: c104c16073b7 ("Kunit to check the longest symbol length") Signed-off-by: Achill Gilgenast <fossdd@pwned.life> Cc: Luis Henriques <luis@igalia.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-10vsock/test: fix test for null ptr deref when transport changesStefano Garzarella1-5/+16
In test_stream_transport_change_client(), the client sends CONTROL_CONTINUE on each iteration, even when connect() is unsuccessful. This causes a flood of control messages in the server that hangs around for more than 10 seconds after the test finishes, triggering several timeouts and causing subsequent tests to fail. This was discovered in testing a newly proposed test that failed in this way on the client side: ... 33 - SOCK_STREAM transport change null-ptr-deref...ok 34 - SOCK_STREAM ioctl(SIOCINQ) functionality...recv timed out The CONTROL_CONTINUE message is used only to tell to the server to call accept() to consume successful connections, so that subsequent connect() will not fail for finding the queue full. Send CONTROL_CONTINUE message only when the connect() has succeeded, or found the queue full. Note that the second connect() can also succeed if the first one was interrupted after sending the request. Fixes: 3a764d93385c ("vsock/test: Add test for null ptr deref when transport changes") Cc: leonardi@redhat.com Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Luigi Leonardi <leonardi@redhat.com> Link: https://patch.msgid.link/20250708111701.129585-1-sgarzare@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10test/vsock: Add ioctl SIOCINQ testsXuewei Niu1-0/+79
Add SIOCINQ ioctl tests for both SOCK_STREAM and SOCK_SEQPACKET. The client waits for the server to send data, and checks if the SIOCINQ ioctl value matches the data size. After consuming the data, the client checks if the SIOCINQ value is 0. Signed-off-by: Xuewei Niu <niuxuewei.nxw@antgroup.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Tested-by: Luigi Leonardi <leonardi@redhat.com> Reviewed-by: Luigi Leonardi <leonardi@redhat.com> Link: https://patch.msgid.link/20250708-siocinq-v6-4-3775f9a9e359@antgroup.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10test/vsock: Add retry mechanism to ioctl wrapperXuewei Niu2-9/+22
Wrap the ioctl in `ioctl_int()`, which takes a pointer to the actual int value and an expected int value. The function will not return until either the ioctl returns the expected value or a timeout occurs, thus avoiding immediate failure. Signed-off-by: Xuewei Niu <niuxuewei.nxw@antgroup.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Luigi Leonardi <leonardi@redhat.com> Link: https://patch.msgid.link/20250708-siocinq-v6-3-3775f9a9e359@antgroup.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10selftests/net: packetdrill: add tcp_ooo-before-and-after-accept.pktEric Dumazet1-0/+53
Test how new passive flows react to ooo incoming packets. Their sk_rcvbuf can increase only after accept(). Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250707213900.1543248-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10selftests/tc-testing: Create test case for UAF scenario with ↵Victor Nogueira1-0/+37
DRR/NETEM/BLACKHOLE chain Create a tdc test for the UAF scenario with DRR/NETEM/BLACKHOLE chain shared by Lion on his report [1]. [1] https://lore.kernel.org/netdev/45876f14-cf28-4177-8ead-bb769fd9e57a@gmail.com/ Signed-off-by: Victor Nogueira <victor@mojatatu.com> Acked-by: Cong Wang <xiyou.wangcong@gmail.com> Link: https://patch.msgid.link/20250705203638.246350-1-victor@mojatatu.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10tools/hv: fcopy: Fix incorrect file path conversionYasumasa Suenaga1-23/+14
The hv_fcopy_uio_daemon fails to correctly handle file copy requests from Windows hosts (e.g. via Copy-VMFile) due to wchar_t size differences between Windows and Linux. On Linux, wchar_t is 32 bit, whereas Windows uses 16 bit wide characters. Fix this by ensuring that file transfers from host to Linux guest succeed with correctly decoded file names and paths. - Treats file name and path as __u16 arrays, not wchar_t*. - Allocates fixed-size buffers (W_MAX_PATH) for converted strings instead of using malloc. - Adds a check for target path length to prevent snprintf() buffer overflow. Fixes: 82b0945ce2c2 ("tools: hv: Add new fcopy application based on uio driver") Signed-off-by: Yasumasa Suenaga <yasuenag@gmail.com> Reviewed-by: Naman Jain <namjain@linux.microsoft.com> Link: https://lore.kernel.org/r/20250628022217.1514-2-yasuenag@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20250628022217.1514-2-yasuenag@gmail.com>
2025-07-09rv: Add rtapp_sleep monitorNam Cao1-0/+22
Add a monitor for checking that real-time tasks do not go to sleep in a manner that may cause undesirable latency. Also change RV depends on TRACING to RV select TRACING to avoid the following recursive dependency: error: recursive dependency detected! symbol TRACING is selected by PREEMPTIRQ_TRACEPOINTS symbol PREEMPTIRQ_TRACEPOINTS depends on TRACE_IRQFLAGS symbol TRACE_IRQFLAGS is selected by RV_MON_SLEEP symbol RV_MON_SLEEP depends on RV symbol RV depends on TRACING Cc: John Ogness <john.ogness@linutronix.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/75bc5bcc741d153aa279c95faf778dff35c5c8ad.1752088709.git.namcao@linutronix.de Reviewed-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-07-09rv: Add rtapp_pagefault monitorNam Cao1-0/+1
Userspace real-time applications may have design flaws that they raise page faults in real-time threads, and thus have unexpected latencies. Add an linear temporal logic monitor to detect this scenario. Cc: John Ogness <john.ogness@linutronix.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/78fea8a2de6d058241d3c6502c1a92910772b0ed.1752088709.git.namcao@linutronix.de Reviewed-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-07-09KVM: arm64: selftests: Test ESR propagation for vSError injectionOliver Upton1-2/+30
Ensure that vSErrors taken in the guest have an appropriate ESR_ELx value for the expected exception. Additionally, switch the EASE test to install the SEA handler at the SError offset, as the ESR is still expected to match an SEA in that case. Link: https://lore.kernel.org/r/20250708230632.1954240-3-oliver.upton@linux.dev Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-07-09KVM: selftests: Convert arch_timer tests to common helpers to pin taskSean Christopherson2-27/+3
Convert the arch timer tests to use __pin_task_to_cpu() and pin_self_to_cpu(). No functional change intended. Link: https://lore.kernel.org/r/20250626001225.744268-6-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
2025-07-09KVM: selftests: Test behavior of KVM_X86_DISABLE_EXITS_APERFMPERFJim Mattson2-0/+214
For a VCPU thread pinned to a single LPU, verify that interleaved host and guest reads of IA32_[AM]PERF return strictly increasing values when APERFMPERF exiting is disabled. Run the test in both L1 and L2 to verify that KVM passes through the APERF and MPERF MSRs when L1 doesn't want to intercept them (or any MSRs). Signed-off-by: Jim Mattson <jmattson@google.com> Link: https://lore.kernel.org/r/20250530185239.2335185-4-jmattson@google.com Co-developed-by: Sean Christopherson <seanjc@google.com> Link: https://lore.kernel.org/r/20250626001225.744268-5-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
2025-07-09KVM: selftests: Expand set of APIs for pinning tasks to a single CPUSean Christopherson3-10/+38
Expand kvm_pin_this_task_to_pcpu() into a set of APIs to allow pinning a task (or self) to a CPU (any or specific). This will allow deduplicating code throughout a variety of selftests. Opportunistically use "self" instead of "this_task" as it is both more concise and less ambiguous. Link: https://lore.kernel.org/r/20250626001225.744268-4-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
2025-07-09KVM: x86: Provide a capability to disable APERF/MPERF read interceptsJim Mattson1-0/+1
Allow a guest to read the physical IA32_APERF and IA32_MPERF MSRs without interception. The IA32_APERF and IA32_MPERF MSRs are not virtualized. Writes are not handled at all. The MSR values are not zeroed on vCPU creation, saved on suspend, or restored on resume. No accommodation is made for processor migration or for sharing a logical processor with other tasks. No adjustments are made for non-unit TSC multipliers. The MSRs do not account for time the same way as the comparable PMU events, whether the PMU is virtualized by the traditional emulation method or the new mediated pass-through approach. Nonetheless, in a properly constrained environment, this capability can be combined with a guest CPUID table that advertises support for CPUID.6:ECX.APERFMPERF[bit 0] to induce a Linux guest to report the effective physical CPU frequency in /proc/cpuinfo. Moreover, there is no performance cost for this capability. Signed-off-by: Jim Mattson <jmattson@google.com> Link: https://lore.kernel.org/r/20250530185239.2335185-3-jmattson@google.com Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com> Link: https://lore.kernel.org/r/20250626001225.744268-3-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
2025-07-09selftests/nolibc: show failed run if test process crashesBenjamin Berg1-1/+2
The logic would not catch if the test process crashes and would incorrectly report a "success" state. Fix this by looking for the final "Total number of errors:" message and printing "failure" if it was not seen. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://lore.kernel.org/r/20250709155512.971080-2-benjamin@sipsolutions.net [Thomas: fix patch prefix] Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-07-09perf list: Remove trailing A in PAI crypto event 4210Thomas Richter2-10/+10
According to the z16 and z17 Principle of Operation documents SA22-7832-13 and SA22-7832-14 the event 4210 is named PCC_COMPUTE_LAST_BLOCK_CMAC_USING_ENCRYPTED_AES_256 without a trailing 'A'. Adjust the json definition files for this event and remove the trailing 'A' character. PCC_COMPUTE_LAST_BLOCK_CMAC_USING_ENCRYPTED_AES_256A Also remove a black ' ' between the dash '-' and the number: xxx-AES- 192 ----> xxx-AES-192 Suggested-by: Ingo Franzki <ifranzki@linux.ibm.com> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Ian Rogers <irogers@google.com> Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Link: https://lore.kernel.org/r/20250709072452.1595257-1-tmricht@linux.ibm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-09Merge tag 'linux-cpupower-6.17-rc1-fixed' of ↵Rafael J. Wysocki3-11/+9
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux Merge cpupower utility changes for 6.17-rc1 from Shuah Khan: "Fixes - snapshot-order of tsc,mperf, clock in mperf_stop() - printing of CORE, CPU fields in cpupower-monitor Improves Python binding's Makefile" * tag 'linux-cpupower-6.17-rc1-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux: cpupower: Improve Python binding's Makefile pm: cpupower: Fix printing of CORE, CPU fields in cpupower-monitor pm: cpupower: Fix the snapshot-order of tsc,mperf, clock in mperf_stop()
2025-07-09selftests/bpf: Remove enum64 case from __arg_untrusted test suiteEduard Zingerman1-7/+1
The enum64 type used by verifier_global_ptr_args test case requires CONFIG_SCHED_CLASS_EXT. At the moment selftets do not depend on this option. There are just a few enum64 types in the kernel. Instead of tying selftests to implementation details of unrelated sub-systems, just remove enum64 test case. Simple enums are covered and that should be sufficient. Fixes: 68cca81fd57f ("selftests/bpf: tests for __arg_untrusted void * global func params") Reported-by: Amery Hung <ameryhung@gmail.com> Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Tested-by: Amery Hung <ameryhung@gmail.com> Link: https://lore.kernel.org/r/20250708220856.3059578-1-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-07-09selftests/bpf: add a new test to check the consumer update caseJason Xing2-1/+56
The subtest sends 33 packets at one time on purpose to see if xsk exitting __xsk_generic_xmit() updates the global consumer of tx queue when reaching the max loop (max_tx_budget, 32 by default). The number 33 can avoid xskq_cons_peek_desc() updates the consumer when it's about to quit sending, to accurately check if the issue that the first patch resolves remains. The new case will not check this issue in zero copy mode. Signed-off-by: Jason Xing <kernelxing@tencent.com> Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20250703141712.33190-3-kerneljasonxing@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-09selftest: af_unix: Add test for SO_INQ.Kuniyuki Iwashima3-1/+127
Let's add a simple test to check the basic functionality of SO_INQ. The test does the following: 1. Create socketpair in self->fd[] 2. Enable SO_INQ 3. Send data via self->fd[0] 4. Receive data from self->fd[1] 5. Compare the SCM_INQ cmsg with ioctl(SIOCINQ) Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20250702223606.1054680-8-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08x86/rdrand: Disable RDSEED on AMD Cyan SkillfishMikhail Paulyshka1-0/+1
AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an error that causes RDSEED to always return 0xffffffff, while RDRAND works correctly. Mask the RDSEED cap for this CPU so that both /proc/cpuinfo and direct CPUID read report RDSEED as unavailable. [ bp: Move to amd.c, massage. ] Signed-off-by: Mikhail Paulyshka <me@mixaill.net> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@kernel.org> Link: https://lore.kernel.org/20250524145319.209075-1-me@mixaill.net
2025-07-08KVM: arm64: selftests: Catch up set_id_regs with the kernelOliver Upton1-2/+12
Add test coverage for ID_AA64MMFR3_EL1 and the recently added FEAT_DoubleFault2. Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250708172532.1699409-28-oliver.upton@linux.dev Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-07-08KVM: arm64: selftests: Add SCTLR2_EL1 to get-reg-listOliver Upton1-0/+7
Handle SCTLR2_EL1 specially as it is only visible to userspace when FEAT_SCTLR2 is implemented for the VM. Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250708172532.1699409-27-oliver.upton@linux.dev Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-07-08KVM: arm64: selftests: Test SEAs are taken to SError vector when EASE=1Oliver Upton1-1/+41
Ensure KVM routes SEAs to the correct vector depending on SCTLR2_EL1.EASE. Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250708172532.1699409-26-oliver.upton@linux.dev Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-07-08KVM: arm64: selftests: Add basic SError injection testOliver Upton3-8/+121
Add tests for SError injection considering KVM is more directly involved in delivery: - Pending SErrors are taken at the first CSE after SErrors are unmasked - Pending SErrors aren't taken and remain pending if SErrors are masked - Unmasked SErrors are taken immediately when injected (implementation detail) Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250708172532.1699409-25-oliver.upton@linux.dev Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-07-08uapi: bitops: use UAPI-safe variant of BITS_PER_LONG again (2)Thomas Weißschuh1-2/+2
BITS_PER_LONG does not exist in UAPI headers, so can't be used by the UAPI __GENMASK(). Instead __BITS_PER_LONG needs to be used. When __GENMASK() was introduced in commit 3c7a8e190bc5 ("uapi: introduce uapi-friendly macros for GENMASK"), the code was fine. A broken revert in 1e7933a575ed ("uapi: Revert "bitops: avoid integer overflow in GENMASK(_ULL)"") introduced the incorrect usage of BITS_PER_LONG. That was fixed in commit 11fcf368506d ("uapi: bitops: use UAPI-safe variant of BITS_PER_LONG again"). But a broken sync of the kernel headers with the tools/ headers in commit fc92099902fb ("tools headers: Synchronize linux/bits.h with the kernel sources") undid the fix. Reapply the fix and while at it also fix the tools header. Fixes: fc92099902fb ("tools headers: Synchronize linux/bits.h with the kernel sources") Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Yury Norov (NVIDIA) <yury.norov@gmail.com> Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
2025-07-08tools/nolibc: drop s390 clang target overrideThomas Weißschuh2-6/+0
tools/scripts/Makefile.include now has the same override, removing the need for the one in the nolibc Makefile. Drop the superfluous custom override. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://lore.kernel.org/r/20250620-tools-cross-s390-v2-2-ecda886e00e5@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-07-08tools/build: Fix s390(x) cross-compilation with clangThomas Weißschuh1-1/+3
The heuristic to derive a clang target triple from a GCC one does not work for s390. GCC uses "s390-linux" while clang expects "s390x-linux" or "powerz-linux". Add an explicit override. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://lore.kernel.org/r/20250620-tools-cross-s390-v2-1-ecda886e00e5@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
2025-07-08selftests: net: Add IPv6 support to netconsole basic testsBreno Leitao2-30/+99
Add IPv6 support to the netconsole basic functionality tests by: - Introducing separate IPv4 and IPv6 address variables (SRCIP4/SRCIP6, DSTIP4/DSTIP6) to replace the single SRCIP/DSTIP variables - Adding select_ipv4_or_ipv6() function to choose protocol version - Updating socat configuration to use UDP6-LISTEN for IPv6 tests - Adding wait_for_port() wrapper to handle protocol-specific port waiting - Expanding test matrix to run both basic and extended formats against both IPv4 and IPv6 protocols - Improving cleanup to kill any remaining socat processes - Adding sleep delays for better IPv6 packet handling reliability The test now validates netconsole functionality across both IP versions, improving test coverage for dual-stack network environments. This test would avoid the regression fixed by commit f59902070269 ("net: netpoll: Initialize UDP checksum field before checksumming") Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250702-netpoll_untagle_ip-v2-7-13cf3db24e2b@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-08perf vendor events: Update TigerLake eventsIan Rogers2-2/+2
Update events from v1.17 to v1.18. Bring in the event updates v1.18: https://github.com/intel/perfmon/commit/943fea37d0d54232605f12abf72a812ac314cd1d Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-16-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update SkylakeX eventsIan Rogers2-2/+2
Update events from v1.36 to v1.37. Bring in the event updates v1.37: https://github.com/intel/perfmon/commit/6ee8e4cadda8b6954bd84236e20fab95e345578f Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-15-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update SierraForest eventsIan Rogers7-14/+194
Update events from v1.09 to v1.11. Bring in the event updates v1.11: https://github.com/intel/perfmon/commit/6b824df1dba3948146281c8ba2a8c3e7bf7f7c51 https://github.com/intel/perfmon/commit/4b0346fbee2b04dd34526522250116aee525c922 Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-14-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update SapphireRapids eventsIan Rogers4-2/+34
Update events from v1.25 to v1.28. Bring in the event updates v1.28: https://github.com/intel/perfmon/commit/990bfdff270adf08d408534d6d66ba47ec6adb34 https://github.com/intel/perfmon/commit/b7b4d7f18cf9a893438777a571abc7ecc087368b Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-13-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Add PantherLake eventsIan Rogers7-0/+923
Bring in the events at v1.00: https://github.com/intel/perfmon/commit/d90a6737d0e4e6fbea4a5951e829615fd8317c24 Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-12-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update MeteorLake eventsIan Rogers4-3/+75
Update events from v1.13 to v1.14. Bring in the event updates v1.14: https://github.com/intel/perfmon/commit/6c53969b8d1a83afe6ae90149c8dd4ee416027ef Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-11-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update LunarLake eventsIan Rogers4-23/+26
Update events from v1.11 to v1.14. Bring in the event updates v1.14: https://github.com/intel/perfmon/commit/95634fec10542c0c466eb2c6d9a81e0c24fb1123 https://github.com/intel/perfmon/commit/84a49938387ac592af0a622273e4e8e4997e987d Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-10-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update IcelakeX eventsIan Rogers3-4/+2
Update events from v1.27 to v1.28. Bring in the event updates v1.28: https://github.com/intel/perfmon/commit/c52728a46cf37ba271c09b1eb7093cfc82dfbf29 Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-9-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update GraniteRapids eventsIan Rogers7-27/+78
Update events from v1.08 to v1.10. Bring in the event updates v1.10 https://github.com/intel/perfmon/commit/96259a932e2ce5f70ed7d347ca92fdeb78f83aa5 https://github.com/intel/perfmon/commit/19e315c8d2e0b44e170a6e60de44c9359062a6aa Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-8-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update GrandRidge eventsIan Rogers4-7/+47
Update events from v1.07 to v1.09. Bring in the event updates v1.09: https://github.com/intel/perfmon/commit/8c74d09c8544421256a79f4f21e548ad756f5b7f https://github.com/intel/perfmon/commit/18c7d2a75e45eacf5553f900ae2097a1290f5bed Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-7-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update EmeraldRapids eventsIan Rogers4-2/+34
Update events from v1.11 to v1.14. Bring in the event updates v1.14: https://github.com/intel/perfmon/commit/6f6e4c8c906992b450cb2014d0501a9ec1cda0d0 https://github.com/intel/perfmon/commit/e363f82276c129aec60402a1d64efbbd41af844e Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-6-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update CascadelakeX eventsIan Rogers3-5/+5
Update events from v1.23 to v1.25. Bring in the event updates v1.25: https://github.com/intel/perfmon/commit/86f146e15626b0fd3b032cab4538cafaaf2d0635 https://github.com/intel/perfmon/commit/fef03ffc333ae44d1e9d695b4e67e5bbb4429729 Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-5-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update Arrowlake eventsIan Rogers3-2/+148
Update events from v1.08 to v1.09. Bring in the event updates v1.09: https://github.com/intel/perfmon/commit/cf3be6daf0a751ad270b67890dfdb2261dfc75da Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-4-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update AlderlakeN eventsIan Rogers6-76/+25
Update events from v1.29 to v1.31. Bring in the event updates v1.31: https://github.com/intel/perfmon/commit/5a1269c8af70e32a548e74e1fda736189c398ddc https://github.com/intel/perfmon/commit/76c6d2c348c067e9ae1b616b35ee982da6d873b4 Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-3-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08perf vendor events: Update Alderlake eventsIan Rogers6-79/+28
Update events from v1.29 to v1.31. Bring in the event updates v1.31: https://github.com/intel/perfmon/commit/5a1269c8af70e32a548e74e1fda736189c398ddc https://github.com/intel/perfmon/commit/76c6d2c348c067e9ae1b616b35ee982da6d873b4 Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Link: https://lore.kernel.org/r/20250630163101.1920170-2-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-07-08selftests: tracing: Use mutex_unlock for testing glob filterMasami Hiramatsu (Google)1-1/+1
Since commit c5b6ababd21a ("locking/mutex: implement mutex_trylock_nested") makes mutex_trylock() as an inlined function if CONFIG_DEBUG_LOCK_ALLOC=y, we can not use mutex_trylock() for testing the glob filter of ftrace. Use mutex_unlock instead. Link: https://lore.kernel.org/r/175151680309.2149615.9795104805153538717.stgit@mhiramat.tok.corp.google.com Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2025-07-08selftests: print installation complete messageShuah Khan1-0/+1
Add installation complete message to Makefile install logic. Link: https://lore.kernel.org/r/20250703231747.37544-1-skhan@linuxfoundation.org Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-12 00:46:15 +0300