kernel/linux.git/tools/perf/trace, branch v7.2-rc1

Merge tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

2026-06-23T18:34:49+00:00

Pull perf tools updates from Arnaldo Carvalho de Melo: - Introduce 'perf inject --aslr' to remap ASLR-randomized addresses in perf.data files, enabling reproducible analysis across runs with different address space layouts - Refactor evsel out of sample processing paths: store evsel in struct perf_sample and remove the redundant evsel parameter from tool APIs, tracepoint handlers, hist entry iterators, and db-export, simplifying the entire tool callback chain - Switch architecture detection from string-based perf_env__arch() comparisons to the numeric ELF e_machine field across the codebase (capstone, print_insn, c2c, lock-contention, sort, sample-raw, machine, header), making cross-analysis more robust - Overhaul ARM CoreSight ETM tests: add deterministic and named_threads workloads, speed up basic and disassembly tests, add process attribution and concurrent threads tests, remove unused workloads and duplicate tests, queue context packets for the frontend decoder - Add ARM SPE IMPDEF event decoding for Arm Neoverse N1, store MIDR in arm_spe_pkt for per-CPU event mapping, handle missing CPU IDs gracefully - Refactor libunwind support: remove the libunwind-local backend, make register reading cross-platform, add RISC-V libunwind support, allow dynamic selection between libdw and libunwind unwinding at runtime - Extensive hardening of perf.data parsing against crafted files: add bounds checks and byte-swap validation for session records, feature sections, header attributes, BPF metadata, auxtrace errors, compressed events, CPU maps, build ID notes, and ELF program headers. Add minimum event size validation and file offset diagnostics - Fix libdw API contract violations across dwarf-aux, libdw, probe-finder, annotate-data, and debuginfo subsystems. Fix callchain parent update in ORDER_CALLER mode, support DWARF line 0 in inline lists, handle multiple address spaces in callchains - Fix numerous 'perf sched' bugs: thread reference leaks, memory leaks, heap overflows with cross-machine recordings, NULL dereferences, replace BUG_ON assertions with graceful error handling, bounds-check CPU indices, fix SIGCHLD vs pause() races in sched stats - Overhaul the build system: move BPF skeleton generation out of Makefile.perf into bpf_skel.mak, decouple pmu-events from the prepare target, make beauty generated C code standalone .o files, compile BPF skeletons with -mcpu=v3, fix continuous rebuilds, various cleanups - Add 'perf test' JUnit XML reporting with -j/--junit option, split monolithic test suites into sub-tests, add summary reporting, refactor parallel poll loop, fix test failures on musl-based systems - Fix 'perf c2c' memory leaks in hist entry and format list handling, use-after-free in error paths, bounds-check CPU and node IDs - Fix 'perf bpf' metadata leaks on duplicate insert and alloc failure, bounds-check array offsets, validate event sizes and func_info fields, add NULL checks - Fix hwmon PMU: off-by-one null termination on sysfs reads, strlcpy buffer overflow in parse_hwmon_filename(), fd 0 check, empty label reads, scnprintf usage - Fix symbols subsystem: bounds-check ELF and sysfs build ID note iteration, validate p_filesz, fix 32-bit ELF bswap error, fix signed overflow in size checks, bounds-check .gnu_debuglink section - Fix tools lib api: null termination in filename__read_int/ull(), uninitialized stack data in filename__write_int(), snprintf truncation in mount_overload() - Replace libbabeltrace with babeltrace2-ctf-writer for CTF conversion in 'perf data' - Add RISC-V SDT argument parsing for static tracepoints - Add 'perf trace --show-cpu' option to display CPU id - Add 'perf bench sched pipe --write-size' option - Add a perf-specific .clang-format that overrides some kernel style behaviors - Update Intel vendor events for Alder Lake, Arrow Lake, Clearwater Forest, Emerald Rapids, Granite Rapids, Grand Ridge, Lunar Lake, Meteor Lake, Panther Lake, Sapphire Rapids, Sierra Forest - Add IOMMU metrics for AMD and Intel - Fix AMD event: switch l2_itlb_misses to bp_l1_tlb_miss_l2_tlb_miss.all - Add AMD IBS improvements: decode Streaming-store and Remote-Socket flags, suppress bogus fields on Zen4+, skip privilege test on Zen6+ - Fix 'perf lock contention' SIGCHLD vs pause() race, allow 'mmap_lock' in -L filter, enable end-timestamp for cgroup aggregation, fix non-atomic data updates - Fix 'perf stat' false NMI watchdog warning in aggregation modes, bounds-check CPU index in topology callbacks, add aggr_nr metric parser support for uncore scaling - Fix 'perf timechart' memory leaks, CPU bounds checking, use-after-free on corrupted callchains - Fix 'perf inject' itrace branch stack synthesis, fix synthesized sample size with branch stacks - Fix DSO heap overflow on decompressed paths, uninitialized pathname on fallback, set proper error codes - Fix various snprintf/scnprintf usages to prevent buffer overflows and truncation across the codebase - Fix off-by-one stack buffer overflow in kallsyms__parse() - Fix 'perf kwork' memory management, address sanitizer issues, bounds check work->cpu - Fix 'perf tpebs' concurrent stop races and PID reuse hazards - Add O_CLOEXEC to open() calls and use mkostemp() for temporary files to prevent file descriptor leaks to child processes - Fix s390 Python extension TEXTREL by compiling as PIC - Fix build with ASAN for jitdump - Fix build failure due to btf_vlen() return type change * tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (343 commits) perf bpf: Fix up build failure due to change of btf_vlen() return type perf dso: Set standard errno on decompression failure perf bpf: Validate array presence before casting BPF prog info pointers perf c2c: Fix hist entry and format list leaks in c2c_he_free() perf c2c: Free format list entries when c2c_hists__init() fails perf cs-etm: Bounds-check CPU in cs_etm__get_queue() perf cs-etm: Require full global header in auxtrace_info size check perf cs-etm: Validate num_cpu before metadata allocation perf machine: Use snprintf() for guestmount path construction perf machine: Propagate machine__init() error to callers perf trace: Guard __probe_ip suppression with evsel__is_probe() perf evsel: Add lazy-initialized probe type detection helpers perf evsel: Add no-libtraceevent stubs for evsel__field() and evsel__common_field() perf cs-etm: Reject CPU IDs that would overflow signed comparison perf c2c: Free format list entries when releasing c2c hist entries perf bpf: Bounds-check array offsets in bpil_offs_to_addr() perf bpf: Reject oversized BPF metadata events that truncate header.size perf bpf: Validate func_info_rec_size and sub_id in synthesize_bpf_prog_name() perf sched: Replace (void*)1 sentinel with proper runtime allocation perf hwmon: Fix fd check to accept fd 0 in hwmon_pmu__describe_items() ...

Merge tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2026-06-16T03:31:23+00:00

Pull crypto updates from Herbert Xu: "API: - Drop support for off-CPU cryptography in af_alg - Document that af_alg is *always* slower - Document the deprecation of af_alg - Remove zero-copy support from skcipher and aead in af_alg - Cap AEAD AD length to 0x80000000 in af_alg - Free default RNG on module exit Algorithms: - Fix vli multiplication carry overflow in ecc - Drop unused cipher_null crypto_alg - Remove unused variants of drbg - Use lib/crypto in drbg - Use memcpy_from/to_sglist in authencesn - Allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode - Disallow RSA PKCS#1 SHA-1 sig algs in FIPS mode - Filter out async aead implementations at alloc in krb5 - Fix non-parallel fallback by rstoring callback in pcrypt - Validate poly1305 template argument in chacha20poly1305 Drivers: - Add sysfs PCI reset support to qat - Add KPT support for GEN6 devices to qat - Remove unused character device and ioctls from qat - Add support for hw access via SMCC to mtk - Remove prng support from crypto4xx - Remove prng support from hisi-trng - Remove prng support from sun4i-ss - Remove prng support from xilinx-trng - Remove loongson-rng - Remove exynos-rng Others: - Remove support for AIO on sockets" * tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (196 commits) crypto: tegra - fix refcount leak in tegra_se_host1x_submit() crypto: rng - Free default RNG on module exit crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode hwrng: jh7110 - fix refcount leak in starfive_trng_read() crypto: atmel-ecc - drop dead code in atmel_ecdh_max_size crypto: cavium/cpt - fix DMA cleanup using wrong loop index crypto: marvell/octeontx - fix DMA cleanup using wrong loop index MAINTAINERS: make myself the maintainer of the Qualcomm QCE driver crypto: amcc - convert irq_of_parse_and_map to platform_get_irq crypto: sun4i-ss - Remove insecure and unused rng_alg hwrng: xilinx - Move xilinx-rng into drivers/char/hw_random/ crypto: xilinx-trng - Replace crypto_drbg_ctr_df() with HMAC-SHA512 crypto: xilinx-trng - Fix return value of xtrng_hwrng_trng_read() crypto: xilinx-trng - Remove crypto_rng interface crypto: exynos-rng - Remove exynos-rng driver hwrng: hisi-trng - Move hisi-trng into drivers/char/hw_random/ crypto: hisi-trng - Remove crypto_rng interface crypto: loongson - Remove broken and unused loongson-rng crypto: crypto4xx - Remove insecure and unused rng_alg crypto: qat - validate RSA CRT component lengths ...

Merge tag 'vfs-7.2-rc1.casefold' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-06-14T21:25:34+00:00

Pull vfs casefolding updates from Christian Brauner: "This exposes the case folding behavior of local filesystems so that file servers - nfsd, ksmbd, and user space file servers - can report the actual behavior to clients instead of guessing. Filesystems report case-insensitive and case-nonpreserving behavior via new file_kattr flags in their fileattr_get implementations. fat, exfat, ntfs3, hfs, hfsplus, xfs, cifs, nfs, vboxsf, and isofs are wired up. Local filesystems that are not explicitly handled default to the usual POSIX behavior of case-sensitive and case-preserving. nfsd uses this to report case folding via NFSv3 PATHCONF and to implement the NFSv4 FATTR4_CASE_INSENSITIVE and FATTR4_CASE_PRESERVING attributes - both have been part of the NFS protocols for decades to support clients on non-POSIX systems - and ksmbd reports it via FS_ATTRIBUTE_INFORMATION. Exposing the information through the fileattr uapi covers user space file servers. The immediate motivation is interoperability: Windows NFS clients hard-require servers to report case-insensitivity for Win32 applications to work correctly, and a client that knows the server is case-insensitive can avoid issuing multiple LOOKUP/READDIR requests searching for case variants. The Linux NFS client already grew support for case-insensitive shares years ago in support of the Hammerspace NFS server - negative dentry caching must be disabled (a lookup for "FILE.TXT" failing must not cache a negative entry when "file.txt" exists) and directory change invalidation must drop cached case-folded name variants. Such servers often operate in multi-protocol environments where a single file service instance caters to both NFS and SMB clients, and nfsd needs to report case folding properly to participate as a first-class citizen there. A follow-up series brings fixes for the initial work: the nfsd case-info probe now uses kernel credentials, maps -ESTALE to NFS3ERR_STALE, and has its cost capped across READDIR entries; the nfs client avoids transiently zeroed case capability bits during the probe and skips the pathconf probe when neither field is consumed; the FS_CASEFOLD_FL semantics are clarified in the UAPI header; and the tools UAPI headers are synced" * tag 'vfs-7.2-rc1.casefold' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (22 commits) nfsd: Cap case-folding probe cost across READDIR entries nfsd: Map -ESTALE from case probe to NFS3ERR_STALE nfsd: Use kernel credentials for case-info probe fs: Clarify FS_CASEFOLD_FL semantics in UAPI header nfs: Skip pathconf probe when neither field is consumed nfs: Avoid transient zeroed case capability bits during probe tools headers UAPI: Sync case-sensitivity flags from linux/fs.h ksmbd: Report filesystem case sensitivity via FS_ATTRIBUTE_INFORMATION nfsd: Implement NFSv4 FATTR4_CASE_INSENSITIVE and FATTR4_CASE_PRESERVING nfsd: Report export case-folding via NFSv3 PATHCONF isofs: Implement fileattr_get for case sensitivity vboxsf: Implement fileattr_get for case sensitivity nfs: Implement fileattr_get for case sensitivity cifs: Implement fileattr_get for case sensitivity xfs: Report case sensitivity in fileattr_get hfsplus: Report case sensitivity in fileattr_get hfs: Implement fileattr_get for case sensitivity ntfs3: Implement fileattr_get for case sensitivity exfat: Implement fileattr_get for case sensitivity fat: Implement fileattr_get for case sensitivity ...

perf env: Refactor perf_env__arch_strerrno

2026-06-03T19:50:45+00:00

The previous approach maps an architecture string to a function pointer to a function that takes an int errno value and returns a string. The new approach takes an e_machine and an errno value and returns a string. As the only call site is in builtin-trace.c, the e_machine is already present and potentially more specific than the perf_env arch string that is a single global value. Since the errno-to-name mapping is now generated statically and no longer depends on libtraceevent, we can remove the HAVE_LIBTRACEEVENT guards entirely, making perf_env__arch_strerrno unconditionally available. The major complication in this approach is having the shell script that generates the C code map a linux directory name to the matching ELF machine constants. To ensure compatibility with older hosts that have older glibc versions, output fallback definitions for newer ELF machine constants (EM_AARCH64, EM_CSKY, EM_LOONGARCH) if they are not defined in the system . Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Alexander Gordeev Cc: Heiko Carstens Cc: Honglei Wang Cc: Jan Polensky Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Vasily Gorbik Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Bounds check perf_event_attr fields against attr.size before printing

2026-05-29T14:44:33+00:00

perf_event_attr__fprintf() accessed all struct fields unconditionally, but attrs from older perf.data files or BPF-captured syscall payloads may have a smaller size than the current struct. Fields beyond the recorded size contain uninitialized or zero-filled data. Add size-guarded macros (PRINT_ATTRn, PRINT_ATTRn_bf) that compare each field's offset against attr->size before accessing it. Guard the bitfield block (disabled, inherit, ... defer_output) with attr_size >= 48. These bitfields share a single __u64 at offset 40, which is within PERF_ATTR_SIZE_VER0 for validated perf.data attrs, but BPF-captured attrs from perf trace can have a smaller size when the tracee passes a minimal struct to sys_perf_event_open. Also fix the BPF trace path: when perf trace intercepts sys_perf_event_open via BPF, the program copies PERF_ATTR_SIZE_VER0 bytes when the tracee passes size=0, but leaves the size field as 0. Set attr->size to PERF_ATTR_SIZE_VER0 in the augmented syscall handler so the bounds checks match the actual copied size. Reported-by: sashiko-bot@kernel.org # Running on a local machine Reviewed-by: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Assisted-by: Claude:claude-opus-4.6-1m Signed-off-by: Arnaldo Carvalho de Melo

net: Remove support for AIO on sockets

2026-05-29T06:05:30+00:00

The only user of msg->msg_iocb was AF_ALG, but that's deprecated. It can be removed entirely at the cost of only supporting synchronous operations. This doesn't break userspace, which will silently block (for a bounded amount of time) in io_submit instead of operating asynchronously. This also makes struct msghdr smaller, helping every other caller of sendmsg(). Signed-off-by: Demi Marie Obenour Acked-by: Jakub Kicinski Signed-off-by: Herbert Xu

Merge remote-tracking branch 'torvalds/master' into perf-tools-next

2026-05-21T23:42:25+00:00

Fixup clash of: 552636b9317c8a84 ("perf trace: Add beautifier script for fsmount flags") That went via Namhyung upstream and the following ones in the perf-tools-next tree: 32969ef6e3e1979a ("perf build: Pre-generate BPF skeleton tooling during umbrella prepare phase") 537609924c43715e ("perf trace beauty: Make beauty generated C code standalone .o files") This complements f8d0db39bcc536ef ("perf build: Fix fsmount.o build") sent by Ian Rogers. Acked-by: Namhyung Kim Tested-by: Ian Rogers Cc: Mark Brown Cc: Thorsten Leemhuis Signed-off-by: Arnaldo Carvalho de Melo

perf build: Fix fsmount.o build

2026-05-21T16:38:50+00:00

A merge conflict between: commit 552636b9317c8a84 ("perf trace: Add beautifier script for fsmount flags") commit 32969ef6e3e1979a ("perf build: Pre-generate BPF skeleton tooling during umbrella prepare phase") Resulted in a missed build dependency in the linux-next merge: commit 61da860eee0798d3 ("Merge branch 'perf-tools-next' of https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git") Fix the build by adding the necessary build dependencies. Signed-off-by: Ian Rogers Cc: Mark Brown Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty: Make beauty generated C code standalone .o files

2026-05-20T20:46:45+00:00

Previously, builtin-trace.c directly included 15 embedded C files (e.g. trace/beauty/mmap.c and fsconfig_arrays.c), which in turn depend on dozens of generated beauty script arrays. To satisfy these embedded inclusions, the global Makefile.perf would define all the generator variables/rules and include them in the prepare umbrella target, choking parallel build startup. Furthermore, tools/perf/util/syscalltbl.c included its own generated mapper, and util/env.c conditionally included arch_errno_names.c inline, splitting consumers across directories and preventing clean Make encapsulation. Refactor the framework to achieve better encapsulation: 1. Move util/syscalltbl.[ch] into trace/beauty/ to co-locate with all generated code consumers. 2. Create fsconfig.c and flatten embedded beauty .c files to compile as independent standalone objects via trace/beauty/Build, exporting their formatting functions via beauty.h and env.h. Switch arch_errno_names.o and syscalltbl.o assignments directly to perf-util-y and add an unconditional top-level recursive kbuild hook (perf-util-y += trace/beauty/) to compile them into libperf-util.a, resolving remote linkage for util/env.c, util/bpf-trace-summary.c, and standalone python extensions. 3. Bridge private opaque references (struct trace) securely via accessors trace__show_zeros() and trace__host(), avoiding header entanglements. 4. Consolidate all generator variables, script paths, and array generation rules entirely out of Makefile.perf and place them directly inside the exact local Build files where their output objects are compiled (trace/beauty/Build and trace/beauty/tracepoints/Build), binding prerequisites locally. Use directly inside generator recipes to guarantee dynamic directory creation before script redirection, and append across all rules to print clean, standardized GEN ... file.c output during compilation. 5. Clean up clean target to recursively remove the generated directory instead of relying on dozens of individual variables. This unchokes the "prepare" target parallel barrier, allows make to evaluate generation scripts purely locally where consumed, and flattens the tracepoint formatting architecture. Testing a parallel build (make -j28 all from scratch) shows improvements: Before: real 0m28.689s user 2m38.490s sys 0m30.148s After: real 0m27.642s user 2m32.356s sys 0m26.683s So reclaiming ~9.6 seconds of raw CPU time and over 1 full second off overall real-world build latency, by overlapping sub-make startup and avoiding top-level double-parsing overhead. Reviewed-by: Namhyung Kim Assisted-by: Gemini:gemini-3.1-pro-preview Signed-off-by: Ian Rogers Tested-by: James Clark Cc: Adrian Hunter Cc: Albert Ou Cc: Alexandre Chartre Cc: Alexandre Ghiti Cc: Andrii Nakryiko Cc: Ankur Arora Cc: Collin Funk Cc: Costa Shulyupin Cc: Daniel Borkmann Cc: Dapeng Mi Cc: David Sterba Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Eduard Zingerman Cc: Howard Chu Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kumar Kartikeya Dwivedi Cc: Leo Yan Cc: Markus Mayer Cc: Martin KaFai Lau Cc: Nathan Chancellor Cc: Nick Terrell Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Quentin Monnet Cc: Ricky Ringler Cc: Song Liu Cc: Swapnil Sapkal Cc: Thomas Falcon Cc: Tomas Glozar Cc: Yonghong Song Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty fcntl: Fix build with older kernel headers

2026-05-15T19:19:50+00:00

Toolchains with older kernel headers that do not include upstream commit c75b1d9421f80f41 ("fs: add fcntl() interface for setting/getting write life time hints") will now fail to build perf due to missing definitions for F_GET_RW_HINT/F_SET_RW_HINT/F_GET_FILE_RW_HINT/F_SET_FILE_RW_HINT. Provide a fallback definition for these when they are not already defined. Fixes: 9c47f66748381ecb ("perf trace beauty fcntl: Basic 'arg' beautifier") Reviewed-by: Ian Rogers Signed-off-by: Florian Fainelli Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Mark Rutland Cc: Markus Mayer Cc: Namhyung Kim Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo