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git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Series for zloop, fixing a variety of issues
- t10-pi code cleanup
- Fix for a merge window regression with the bio memory allocation mask
- Fix for a merge window regression in ublk, caused by an issue with
the maple tree iteration code at teardown
- ublk self tests additions
- Zoned device pgmap fixes
- Various little cleanups and fixes
* tag 'block-7.1-20260424' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (21 commits)
Revert "floppy: fix reference leak on platform_device_register() failure"
ublk: avoid unpinning pages under maple tree spinlock
ublk: refactor common helper ublk_shmem_remove_ranges()
ublk: fix maple tree lockdep warning in ublk_buf_cleanup
selftests: ublk: add ublk auto integrity test
selftests: ublk: enable test_integrity_02.sh on fio 3.42
selftests: ublk: remove unused argument to _cleanup
block: only restrict bio allocation gfp mask asked to block
block/blk-throttle: Add WQ_PERCPU to alloc_workqueue users
block: Add WQ_PERCPU to alloc_workqueue users
block: relax pgmap check in bio_add_page for compatible zone device pages
block: add pgmap check to biovec_phys_mergeable
floppy: fix reference leak on platform_device_register() failure
ublk: use unchecked copy helpers for bio page data
t10-pi: reduce ref tag code duplication
zloop: remove irq-safe locking
zloop: factor out zloop_mark_{full,empty} helpers
zloop: set RQF_QUIET when completing requests on deleted devices
zloop: improve the unaligned write pointer warning
zloop: use vfs_truncate
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"There is one significant change outside arch/riscv in this pull
request: the addition of a set of KUnit tests for strlen(), strnlen(),
and strrchr().
Otherwise, the most notable changes are to add some RISC-V-specific
string function implementations, to remove XIP kernel support, to add
hardware error exception handling, and to optimize our runtime
unaligned access speed testing.
A few comments on the motivation for removing XIP support. It's been
broken in the RISC-V kernel for months. The code is not easy to
maintain. Furthermore, for XIP support to truly be useful for RISC-V,
we think that compile-time feature switches would need to be added for
many of the RISC-V ISA features and microarchitectural properties that
are currently implemented with runtime patching. No one has stepped
forward to take responsibility for that work, so many of us think it's
best to remove it until clear use cases and champions emerge.
Summary:
- Add Kunit correctness testing and microbenchmarks for strlen(),
strnlen(), and strrchr()
- Add RISC-V-specific strnlen(), strchr(), strrchr() implementations
- Add hardware error exception handling
- Clean up and optimize our unaligned access probe code
- Enable HAVE_IOREMAP_PROT to be able to use generic_access_phys()
- Remove XIP kernel support
- Warn when addresses outside the vmemmap range are passed to
vmemmap_populate()
- Update the ACPI FADT revision check to warn if it's not at least
ACPI v6.6, which is when key RISC-V-specific tables were added to
the specification
- Increase COMMAND_LINE_SIZE to 2048 to match ARM64, x86, PowerPC,
etc.
- Make kaslr_offset() a static inline function, since there's no need
for it to show up in the symbol table
- Add KASLR offset and SATP to the VMCOREINFO ELF notes to improve
kdump support
- Add Makefile cleanup rule for vdso_cfi copied source files, and add
a .gitignore for the build artifacts in that directory
- Remove some redundant ifdefs that check Kconfig macros
- Add missing SPDX license tag to the CFI selftest
- Simplify UTS_MACHINE assignment in the RISC-V Makefile
- Clarify some unclear comments and remove some superfluous comments
- Fix various English typos across the RISC-V codebase"
* tag 'riscv-for-linus-7.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (31 commits)
riscv: Remove support for XIP kernel
riscv: Reuse compare_unaligned_access() in check_vector_unaligned_access()
riscv: Split out compare_unaligned_access()
riscv: Reuse measure_cycles() in check_vector_unaligned_access()
riscv: Split out measure_cycles() for reuse
riscv: Clean up & optimize unaligned scalar access probe
riscv: lib: add strrchr() implementation
riscv: lib: add strchr() implementation
riscv: lib: add strnlen() implementation
lib/string_kunit: extend benchmarks to strnlen() and chr searches
lib/string_kunit: add performance benchmark for strlen()
lib/string_kunit: add correctness test for strrchr()
lib/string_kunit: add correctness test for strnlen()
lib/string_kunit: add correctness test for strlen()
riscv: vdso_cfi: Add .gitignore for build artifacts
riscv: vdso_cfi: Add clean rule for copied sources
riscv: enable HAVE_IOREMAP_PROT
riscv: mm: WARN_ON() for bad addresses in vmemmap_populate()
riscv: acpi: update FADT revision check to 6.6
riscv: add hardware error trap handler support
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git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Adjust build infrastructure for 32BIT/64BIT
- Add HIGHMEM (PKMAP and FIX_KMAP) support
- Show and handle CPU vulnerabilites correctly
- Batch the icache maintenance for jump_label
- Add more atomic instructions support for BPF JIT
- Add more features (e.g. fsession) support for BPF trampoline
- Some bug fixes and other small changes
* tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (21 commits)
selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch
LoongArch: BPF: Add fsession support for trampolines
LoongArch: BPF: Introduce emit_store_stack_imm64() helper
LoongArch: BPF: Support up to 12 function arguments for trampoline
LoongArch: BPF: Support small struct arguments for trampoline
LoongArch: BPF: Open code and remove invoke_bpf_mod_ret()
LoongArch: BPF: Support load-acquire and store-release instructions
LoongArch: BPF: Support 8 and 16 bit read-modify-write instructions
LoongArch: BPF: Add the default case in emit_atomic() and rename it
LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR
LoongArch: Batch the icache maintenance for jump_label
LoongArch: Add flush_icache_all()/local_flush_icache_all()
LoongArch: Add spectre boundry for syscall dispatch table
LoongArch: Show CPU vulnerabilites correctly
LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist
LoongArch: Use get_random_canary() for stack canary init
LoongArch: Improve the logging of disabling KASLR
LoongArch: Align FPU register state to 32 bytes
LoongArch: Handle CONFIG_32BIT in syscall_get_arch()
LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from Netfilter.
Steady stream of fixes. Last two weeks feel comparable to the two
weeks before the merge window. Lots of AI-aided bug discovery. A newer
big source is Sashiko/Gemini (Roman Gushchin's system), which points
out issues in existing code during patch review (maybe 25% of fixes
here likely originating from Sashiko). Nice thing is these are often
fixed by the respective maintainers, not drive-bys.
Current release - new code bugs:
- kconfig: MDIO_PIC64HPSC should depend on ARCH_MICROCHIP
Previous releases - regressions:
- add async ndo_set_rx_mode and switch drivers which we promised to
be called under the per-netdev mutex to it
- dsa: remove duplicate netdev_lock_ops() for conduit ethtool ops
- hv_sock: report EOF instead of -EIO for FIN
- vsock/virtio: fix MSG_PEEK calculation on bytes to copy
Previous releases - always broken:
- ipv6: fix possible UAF in icmpv6_rcv()
- icmp: validate reply type before using icmp_pointers
- af_unix: drop all SCM attributes for SOCKMAP
- netfilter: fix a number of bugs in the osf (OS fingerprinting)
- eth: intel: fix timestamp interrupt configuration for E825C
Misc:
- bunch of data-race annotations"
* tag 'net-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (148 commits)
rxrpc: Fix error handling in rxgk_extract_token()
rxrpc: Fix re-decryption of RESPONSE packets
rxrpc: Fix rxrpc_input_call_event() to only unshare DATA packets
rxrpc: Fix missing validation of ticket length in non-XDR key preparsing
rxgk: Fix potential integer overflow in length check
rxrpc: Fix conn-level packet handling to unshare RESPONSE packets
rxrpc: Fix potential UAF after skb_unshare() failure
rxrpc: Fix rxkad crypto unalignment handling
rxrpc: Fix memory leaks in rxkad_verify_response()
net: rds: fix MR cleanup on copy error
m68k: mvme147: Make me the maintainer
net: txgbe: fix firmware version check
selftests/bpf: check epoll readiness during reuseport migration
tcp: call sk_data_ready() after listener migration
vhost_net: fix sleeping with preempt-disabled in vhost_net_busy_poll()
ipv6: Cap TLV scan in ip6_tnl_parse_tlv_enc_lim
tipc: fix double-free in tipc_buf_append()
llc: Return -EINPROGRESS from llc_ui_connect()
ipv4: icmp: validate reply type before using icmp_pointers
selftests/net: packetdrill: cover RFC 5961 5.2 challenge ACK on both edges
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Inside migrate_dance(), add epoll checks around shutdown() to
verify that the target listener is not ready before shutdown()
and becomes ready immediately after shutdown() triggers migration.
Cover TCP_ESTABLISHED and TCP_SYN_RECV. Exclude TCP_NEW_SYN_RECV
as it depends on later handshake completion.
Suggested-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Zhenzhong Wu <jt26wzz@gmail.com>
Link: https://patch.msgid.link/20260422024554.130346-3-jt26wzz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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RFC 5961 Section 5.2 / RFC 793 Section 3.9 require a challenge ACK
whenever an incoming SEG.ACK falls outside
[SND.UNA - MAX.SND.WND, SND.NXT]. There is currently no packetdrill
coverage for either edge.
Add tcp_rfc5961_ack-out-of-window.pkt, which in a single passive-open
connection exercises:
- Upper edge (SEG.ACK > SND.NXT): peer ACKs data that was never
sent before the server has transmitted anything.
- Lower edge (SEG.ACK < SND.UNA - MAX.SND.WND): after the server
has sent 2000 bytes (the peer-advertised rwnd forces two 1000-byte
segments, both acknowledged), peer sends an ACK that is older
than the acceptable window.
Both cases must elicit a challenge ACK
<SEQ = SND.NXT, ACK = RCV.NXT, CTL = ACK>. The per-socket RFC 5961
Section 7 rate limit is disabled for the duration of the test so that
both challenge ACKs can fire back-to-back.
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260422123605.320000-3-jiayuan.chen@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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RFC 5961 Section 5.2 validates an incoming segment's ACK value
against the range [SND.UNA - MAX.SND.WND, SND.NXT] and states:
"All incoming segments whose ACK value doesn't satisfy the above
condition MUST be discarded and an ACK sent back."
Commit 354e4aa391ed ("tcp: RFC 5961 5.2 Blind Data Injection Attack
Mitigation") opted Linux into this mitigation and implements the
challenge ACK on the lower side (SEG.ACK < SND.UNA - MAX.SND.WND),
but the symmetric upper side (SEG.ACK > SND.NXT) still takes the
pre-RFC-5961 path and silently returns
SKB_DROP_REASON_TCP_ACK_UNSENT_DATA, even though RFC 793 Section 3.9
(now RFC 9293 Section 3.10.7.4) has always required:
"If the ACK acknowledges something not yet sent (SEG.ACK > SND.NXT)
then send an ACK, drop the segment, and return."
Complete the mitigation by sending a challenge ACK on that branch,
reusing the existing tcp_send_challenge_ack() path which already
enforces the per-socket RFC 5961 Section 7 rate limit via
__tcp_oow_rate_limited(). FLAG_NO_CHALLENGE_ACK is honoured for
symmetry with the lower-edge case.
Update the existing tcp_ts_recent_invalid_ack.pkt selftest, which
drives this exact path, to consume the new challenge ACK.
Fixes: 354e4aa391ed ("tcp: RFC 5961 5.2 Blind Data Injection Attack Mitigation")
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260422123605.320000-2-jiayuan.chen@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add a new chk_sndbuf() helper to diag.sh that extracts the sndbuf
(the 'tb' field from 'ss -m' skmem output) for both server and
client MPTCP sockets, and verifies they are equal.
Without the previous patch, it will fail:
'''
07 ....chk sndbuf server/client [FAIL] sndbuf S=20480 != C=2630656
'''
Signed-off-by: Gang Yan <yangang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260420-net-mptcp-sync-sndbuf-accept-v1-2-e3523e3aeb44@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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The end-to-end integrity ublk selftest test_integrity_02 requires a
relatively recent fio version to support I/O with integrity buffers. Add
a version test_integrity_03 that uses the block layer's auto integrity
path instead. The auto integrity code doesn't check the application tag,
and doesn't indicate the bad guard/ref tag (just returns EILSEQ). But
it's a good smoke-test of the ublk integrity code and provides coverage
of the auto integrity path as well.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260421200901.1528842-4-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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fio 3.42 was released with the needed fix for test_integrity_02.sh.
Allow 3.42 and newer in the fio version check.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260421200901.1528842-3-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The _cleanup helper function doesn't take any arguments, so drop them
from its callers.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260421200901.1528842-2-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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In order to do the following load-acquire and store-release tests on
LoongArch:
sudo ./test_progs -t verifier_load_acquire
sudo ./test_progs -t verifier_store_release
sudo ./test_progs -t verifier_precision/bpf_load_acquire
sudo ./test_progs -t verifier_precision/bpf_store_release
sudo ./test_progs -t compute_live_registers/atomic_load_acq_store_rel
It needs to enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch.
Acked-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
Pull ktest updates from Steven Rostedt:
- Fix month in date timestamp used to create failure directories
On failure, a directory is created to store the logs and config file
to analyze the failure. The Perl function localtime is used to create
the data timestamp of the directory. The month passed back from that
function starts at 0 and not 1, but the timestamp used does not
account for that. Thus for April 20, 2026, the timestamp of 20260320
is used, instead of 20260420.
- Save the logfile to the failure directory
Just the test log was saved to the directory on failure, but there's
useful information in the full logfile that can be helpful to
analyzing the failure. Save the logfile as well.
* tag 'ktest-v7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
ktest: Add logfile to failure directory
ktest: Fix the month in the name of the failure directory
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V updates from Wei Liu:
- Fix cross-compilation for hv tools (Aditya Garg)
- Fix vmemmap_shift exceeding MAX_FOLIO_ORDER in mshv_vtl (Naman Jain)
- Limit channel interrupt scan to relid high water mark (Michael
Kelley)
- Export hv_vmbus_exists() and use it in pci-hyperv (Dexuan Cui)
- Fix cleanup and shutdown issues for MSHV (Jork Loeser)
- Introduce more tracing support for MSHV (Stanislav Kinsburskii)
* tag 'hyperv-next-signed-20260421' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
x86/hyperv: Skip LP/VP creation on kexec
x86/hyperv: move stimer cleanup to hv_machine_shutdown()
Drivers: hv: vmbus: fix hyperv_cpuhp_online variable shadowing
mshv: Add tracepoint for GPA intercept handling
mshv_vtl: Fix vmemmap_shift exceeding MAX_FOLIO_ORDER
tools: hv: Fix cross-compilation
Drivers: hv: vmbus: Export hv_vmbus_exists() and use it in pci-hyperv
mshv: Introduce tracing support
Drivers: hv: vmbus: Limit channel interrupt scan to relid high water mark
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
"fprobe bug fixes:
- Prevent re-registration
Add an earlier check to reject re-registering an already active
fprobe before its state is modified during the initialization phase
- Robustness in failure paths:
- Ensure fprobes are correctly removed from all internal tables
and properly RCU-freed during registration failure
- Make unregister_fprobe() proceed with unregistration even if
temporary memory allocation fails
- RCU safety in module unloading
Avoid a potential "sleep in RCU" warning by removing a kcalloc()
call in the module notifier path. This also tries to remove
fprobe_hash_node even if memory allocation fails.
- Type-aware unregistration
Fix a bug where unregistering an fprobe did not account for
different types (entry-only vs entry-exit) at the same address,
which previously left "junk" entries in the underlying
ftrace/fgraph ops
- Unregistration of empty ftrace_ops
Avoid unneeded performance overhead due to making registered
ftrace_ops empty - which means 'trace all functions'. This counts
remaining entries and unregister ftrace_ops when it becomes empty.
Two new selftests to check above fixes:
- Module Unloading Test:
Specifically verifies that fprobe events on a module are correctly
cleaned up and do not trigger 'trace-all' behavior when the module
is removed.
- Multiple Fprobe Events Test:
Ensure that having multiple fprobes on the same function correctly
manages the ftrace hash map during removal"
* tag 'probes-v7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
selftests/ftrace: Add a testcase for multiple fprobe events
selftests/ftrace: Add a testcase for fprobe events on module
tracing/fprobe: Fix to unregister ftrace_ops if it is empty on module unloading
tracing/fprobe: Check the same type fprobe on table as the unregistered one
tracing/fprobe: Avoid kcalloc() in rcu_read_lock section
tracing/fprobe: Remove fprobe from hash in failure path
tracing/fprobe: Unregister fprobe even if memory allocation fails
tracing/fprobe: Reject registration of a registered fprobe before init
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Add a testcase for multiple fprobe events on the same function
so that it clears ftrace hash map correctly when removing the
events.
Link: https://lore.kernel.org/all/177669370353.132053.16801520791509406141.stgit@mhiramat.tok.corp.google.com/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
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Add a testcase for fprobe events on module, which unloads a kernel
module on which fprobe events are probing and ensure the ftrace
hash map is cleared correctly.
Link: https://lore.kernel.org/all/177669369564.132053.623527664540176496.stgit@mhiramat.tok.corp.google.com/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull more crypto library updates from Eric Biggers:
"Crypto library fix and documentation update:
- Fix an integer underflow in the mpi library
- Improve the crypto library documentation"
* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
lib/crypto: docs: Add rst documentation to Documentation/crypto/
docs: kdoc: Expand 'at_least' when creating parameter list
lib/crypto: mpi: Fix integer underflow in mpi_read_raw_from_sgl()
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Replace teamd daemon usage with ip link commands for team device
setup. teamd -d daemonizes and returns to the shell before port
addition completes, creating a race: the test may create the macvlan
(and check for its address on a slave) before teamd has finished
adding ports. This makes the test inherently dependent on scheduling
timing.
Using ip commands makes port addition synchronous, removing the race
and making the test deterministic.
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: Jay Vosburgh <jv@jvosburgh.net>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20260416185712.2155425-16-sdf@fomichev.me
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add a test that exercises the ndo_change_rx_flags path through a
macvlan -> bridge -> team -> dummy stack. This triggers dev_uc_add
under addr_list_lock which flips promiscuity on the lower device.
With the new work queue approach, this must not deadlock.
Link: https://lore.kernel.org/netdev/20260214033859.43857-1-jiayuan.chen@linux.dev/
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20260416185712.2155425-15-sdf@fomichev.me
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
"Fix regressions in non-bash shells and busybox support, and revert a
commit that regressed in build and installation when one or more tests
fail to build.
Fix duplicated test number reporting introduced in ktap support patch"
* tag 'linux_kselftest-next-7.1-next-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: Fix duplicated test number reporting
selftests: Fix runner.sh for non-bash shells
selftests: Fix runner.sh busybox support
selftests: Deescalate error reporting
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The logfile contains a lot of useful information about the tests being
run. Add it to the stored failure directory when the test fails.
Cc: John 'Warthog9' Hawley <warthog9@kernel.org>
Link: https://patch.msgid.link/20260420142315.7bbc3624@fedora
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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The Perl localtime() function returns the month starting at 0 not 1. This
caused the date produced to create the directory for saving files of a
failed run to have the month off by one.
machine-test-useconfig-fail-20260314073628
The above happened in April, not March. The correct name should have been:
machine-test-useconfig-fail-20260414073628
This was somewhat confusing.
Cc: stable@vger.kernel.org
Cc: John 'Warthog9' Hawley <warthog9@kernel.org>
Link: https://patch.msgid.link/20260420142426.33ad0293@fedora
Fixes: 7faafbd69639b ("ktest: Add open and close console and start stop monitor")
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
"asus-wmi:
- Retain battery charge threshold during boot which avoids
unsolicited change to 100%. Return -ENODATA when the limit
is not yet known
- Improve screenpad power/brightness handling consistency
- Fix screenpad brightness range
barco-p50-gpio:
- Normalize gpio_get return values
bitland-mifs-wmi:
- Add driver for Bitland laptops (supports platform profile,
hwmon, kbd backlight, gpu mode, hotkeys, and fan boost)
dell_rbu:
- Fix using uninitialized value in sysfs write function
dell-wmi-sysman:
- Respect destination length when constructing enum strings
hp-wmi:
- Propagate fan setting apply failures and log an error
- Fix sysfs write vs work handler cancel_delayed_work_sync() deadlock
- Correct keepalive schedule_delayed_work() to mod_delayed_work()
- Fix u8 underflows in GPU delta calculation
- Use mutex to protect fan pwm/mode
- Ignore kbd backlight and FnLock key events that are handled by FW
- Fix fan table parsing (use correct field)
- Add support for Omen 14-fb0xxx, 16-n0xxx, 16-wf1xxx, and
Omen MAX 16-ak0xxxx
input: trackpoint & thinkpad_acpi:
- Enable doubletap by default and add sysfs enable/disable
int3472:
- Add support for GPIO type 0x02 (IR flood LED)
intel-speed-select: (updated to v1.26)
- Avoid using current base frequency as maximum
- Fix CPU extended family ID decoding
- Fix exit code
- Improve error reporting
intel/vsec:
- Refactor to support ACPI-enumerated PMT endpoints.
pcengines-apuv2:
- Attach software node to the gpiochip
uniwill:
- Refactor hwmon to smaller parts to accomodate HW diversity
- Support USB-C power/performance priority switch through sysfs
- Add another XMG Fusion 15 (L19) DMI vendor
- Enable fine-grained features to device lineup mapping
wmi:
- Perform output size check within WMI core to allow simpler WMI
drivers
misc:
- acpi_driver -> platform driver conversions (a large number of
changes from Rafael J. Wysocki)
- cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (106 commits)
platform/x86: hp-wmi: Add support for Omen 16-wf1xxx (8C77)
platform/x86: hp-wmi: Add support for Omen 16-n0xxx (8A44)
platform/x86: hp-wmi: Add support for OMEN MAX 16-ak0xxx (8D87)
platform/x86: hp-wmi: fix fan table parsing
platform/x86: hp-wmi: add Omen 14-fb0xxx (board 8C58) support
platform/wmi: Replace .no_notify_data with .min_event_size
platform/wmi: Extend wmidev_query_block() to reject undersized data
platform/wmi: Extend wmidev_invoke_method() to reject undersized data
platform/wmi: Prepare to reject undersized unmarshalling results
platform/wmi: Convert drivers to use wmidev_invoke_procedure()
platform/wmi: Add wmidev_invoke_procedure()
platform/x86: int3472: Add support for GPIO type 0x02 (IR flood LED)
platform/x86: int3472: Parameterize LED con_id in registration
platform/x86: int3472: Rename pled to led in LED registration code
platform/x86: int3472: Use local variable for LED struct access
platform/x86: thinkpad_acpi: remove obsolete TODO comment
platform/x86: dell-wmi-sysman: bound enumeration string aggregation
platform/x86: hp-wmi: Ignore backlight and FnLock events
platform/x86: uniwill-laptop: Fix signedness bug
platform/x86: dell_rbu: avoid uninit value usage in packet_size_write()
...
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|
Pull rdma updates from Jason Gunthorpe:
"The usual collection of driver changes, more core infrastructure
updates that typical this cycle:
- Minor cleanups and kernel-doc fixes in bnxt_re, hns, rdmavt, efa,
ocrdma, erdma, rtrs, hfi1, ionic, and pvrdma
- New udata validation framework and driver updates
- Modernize CQ creation interface in mlx4 and mlx5, manage CQ umem in
core
- Promote UMEM to a core component, split out DMA block iterator
logic
- Introduce FRMR pools with aging, statistics, pinned handles, and
netlink control and use it in mlx5
- Add PCIe TLP emulation support in mlx5
- Extend umem to work with revocable pinned dmabuf's and use it in
irdma
- More net namespace improvements for rxe
- GEN4 hardware support in irdma
- First steps to MW and UC support in mana_ib
- Support for CQ umem and doorbells in bnxt_re
- Drop opa_vnic driver from hfi1
Fixes:
- IB/core zero dmac neighbor resolution race
- GID table memory free
- rxe pad/ICRC validation and r_key async errors
- mlx4 external umem for CQ
- umem DMA attributes on unmap
- mana_ib RX steering on RSS QP destroy"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (116 commits)
RDMA/core: Fix user CQ creation for drivers without create_cq
RDMA/ionic: bound node_desc sysfs read with %.64s
IB/core: Fix zero dmac race in neighbor resolution
RDMA/mana_ib: Support memory windows
RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
RDMA/core: Prefer NLA_NUL_STRING
RDMA/core: Fix memory free for GID table
RDMA/hns: Remove the duplicate calls to ib_copy_validate_udata_in()
RDMA: Remove redundant = {} for udata req structs
RDMA/irdma: Add missing comp_mask check in alloc_ucontext
RDMA/hns: Add missing comp_mask check in create_qp
RDMA/mlx5: Pull comp_mask validation into ib_copy_validate_udata_in_cm()
RDMA: Use ib_copy_validate_udata_in_cm() for zero comp_mask
RDMA/hns: Use ib_copy_validate_udata_in()
RDMA/mlx4: Use ib_copy_validate_udata_in() for QP
RDMA/mlx4: Use ib_copy_validate_udata_in()
RDMA/mlx5: Use ib_copy_validate_udata_in() for MW
RDMA/mlx5: Use ib_copy_validate_udata_in() for SRQ
RDMA/pvrdma: Use ib_copy_validate_udata_in() for srq
RDMA: Use ib_copy_validate_udata_in() for implicit full structs
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 7.1-rc1.
Lots of little things in here, nothing major, just constant
improvements, updates, and new features. Highlights are:
- new USB power supply driver support.
These changes did touch outside of drivers/usb/ but got acks from
the relevant mantainers for them.
- dts file updates and conversions
- string function conversions into "safer" ones
- new device quirks
- xhci driver updates
- usb gadget driver minor fixes
- typec driver additions and updates
- small number of thunderbolt driver changes
- dwc3 driver updates and additions of new hardware support
- other minor driver updates
All of these have been in the linux-next tree for a while with no
reported issues"
* tag 'usb-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (176 commits)
usb: dwc3: starfive: Add JHB100 USB 2.0 DRD controller
dt-bindings: usb: dwc3: add support for StarFive JHB100
dt-bindings: usb: atmel,at91sam9rl-udc: convert to DT schema
dt-bindings: usb: atmel,at91rm9200-udc: convert to DT schema
dt-bindings: usb: generic-ehci: fix schema structure and add at91sam9g45 constraints
dt-bindings: usb: generic-ohci: add AT91RM9200 OHCI binding support
arm: dts: at91: remove unused #address-cells/#size-cells from sam9x60 udc node
drivers/usb/host: Fix spelling error 'seperate' -> 'separate'
usbip: tools: add hint when no exported devices are found
USB: serial: iuu_phoenix: fix iuutool author name
usb: gadget: f_ncm: validate minimum block_len in ncm_unwrap_ntb()
usb: gadget: f_phonet: fix skb frags[] overflow in pn_rx_complete()
usb: gadget: f_hid: Add missing error code
usb: typec: cros_ec_ucsi: Load driver from OF and ACPI definitions
dt-bindings: chrome: Add cros-ec-ucsi compatibility to typec binding
USB: of: Simplify with scoped for each OF child loop
usbip: validate number_of_packets in usbip_pack_ret_submit()
usb: gadget: renesas_usb3: validate endpoint index in standard request handlers
usb: core: config: reverse the size check of the SSP isoc endpoint descriptor
usb: typec: ucsi: Set usb mode on partner change
...
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
- "Eliminate Dying Memory Cgroup" (Qi Zheng and Muchun Song)
Address the longstanding "dying memcg problem". A situation wherein a
no-longer-used memory control group will hang around for an extended
period pointlessly consuming memory
- "fix unexpected type conversions and potential overflows" (Qi Zheng)
Fix a couple of potential 32-bit/64-bit issues which were identified
during review of the "Eliminate Dying Memory Cgroup" series
- "kho: history: track previous kernel version and kexec boot count"
(Breno Leitao)
Use Kexec Handover (KHO) to pass the previous kernel's version string
and the number of kexec reboots since the last cold boot to the next
kernel, and print it at boot time
- "liveupdate: prevent double preservation" (Pasha Tatashin)
Teach LUO to avoid managing the same file across different active
sessions
- "liveupdate: Fix module unloading and unregister API" (Pasha
Tatashin)
Address an issue with how LUO handles module reference counting and
unregistration during module unloading
- "zswap pool per-CPU acomp_ctx simplifications" (Kanchana Sridhar)
Simplify and clean up the zswap crypto compression handling and
improve the lifecycle management of zswap pool's per-CPU acomp_ctx
resources
- "mm/damon/core: fix damon_call()/damos_walk() vs kdmond exit race"
(SeongJae Park)
Address unlikely but possible leaks and deadlocks in damon_call() and
damon_walk()
- "mm/damon/core: validate damos_quota_goal->nid" (SeongJae Park)
Fix a couple of root-only wild pointer dereferences
- "Docs/admin-guide/mm/damon: warn commit_inputs vs other params race"
(SeongJae Park)
Update the DAMON documentation to warn operators about potential
races which can occur if the commit_inputs parameter is altered at
the wrong time
- "Minor hmm_test fixes and cleanups" (Alistair Popple)
Bugfixes and a cleanup for the HMM kernel selftests
- "Modify memfd_luo code" (Chenghao Duan)
Cleanups, simplifications and speedups to the memfd_lou code
- "mm, kvm: allow uffd support in guest_memfd" (Mike Rapoport)
Support for userfaultfd in guest_memfd
- "selftests/mm: skip several tests when thp is not available" (Chunyu
Hu)
Fix several issues in the selftests code which were causing breakage
when the tests were run on CONFIG_THP=n kernels
- "mm/mprotect: micro-optimization work" (Pedro Falcato)
A couple of nice speedups for mprotect()
- "MAINTAINERS: update KHO and LIVE UPDATE entries" (Pratyush Yadav)
Document upcoming changes in the maintenance of KHO, LUO, memfd_luo,
kexec, crash, kdump and probably other kexec-based things - they are
being moved out of mm.git and into a new git tree
* tag 'mm-stable-2026-04-18-02-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (121 commits)
MAINTAINERS: add page cache reviewer
mm/vmscan: avoid false-positive -Wuninitialized warning
MAINTAINERS: update Dave's kdump reviewer email address
MAINTAINERS: drop include/linux/liveupdate from LIVE UPDATE
MAINTAINERS: drop include/linux/kho/abi/ from KHO
MAINTAINERS: update KHO and LIVE UPDATE maintainers
MAINTAINERS: update kexec/kdump maintainers entries
mm/migrate_device: remove dead migration entry check in migrate_vma_collect_huge_pmd()
selftests: mm: skip charge_reserved_hugetlb without killall
userfaultfd: allow registration of ranges below mmap_min_addr
mm/vmstat: fix vmstat_shepherd double-scheduling vmstat_update
mm/hugetlb: fix early boot crash on parameters without '=' separator
zram: reject unrecognized type= values in recompress_store()
docs: proc: document ProtectionKey in smaps
mm/mprotect: special-case small folios when applying permissions
mm/mprotect: move softleaf code out of the main function
mm: remove '!root_reclaim' checking in should_abort_scan()
mm/sparse: fix comment for section map alignment
mm/page_io: use sio->len for PSWPIN accounting in sio_read_complete()
selftests/mm: transhuge_stress: skip the test when thp not available
...
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sphinx doesn't know that the kernel headers do:
#define at_least static
Do this replacement before declarations are passed to it.
This prevents errors like the following from appearing once the
lib/crypto/ kernel-doc is wired up to the sphinx build:
linux/Documentation/crypto/libcrypto:128: ./include/crypto/sha2.h:773: WARNING: Error in declarator or parameters
Error in declarator or parameters
Invalid C declaration: Expected ']' in end of array operator. [error at 59]
void sha512_final (struct sha512_ctx *ctx, u8 out[at_least SHA512_DIGEST_SIZE])
Acked-by: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20260418192138.15556-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock updates from Mike Rapoport:
- improve debuggability of reserve_mem kernel parameter handling with
print outs in case of a failure and debugfs info showing what was
actually reserved
- Make memblock_free_late() and free_reserved_area() use the same core
logic for freeing the memory to buddy and ensure it takes care of
updating memblock arrays when ARCH_KEEP_MEMBLOCK is enabled.
* tag 'memblock-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
x86/alternative: delay freeing of smp_locks section
memblock: warn when freeing reserved memory before memory map is initialized
memblock, treewide: make memblock_free() handle late freeing
memblock: make free_reserved_area() update memblock if ARCH_KEEP_MEMBLOCK=y
memblock: extract page freeing from free_reserved_area() into a helper
memblock: make free_reserved_area() more robust
mm: move free_reserved_area() to mm/memblock.c
powerpc: opal-core: pair alloc_pages_exact() with free_pages_exact()
powerpc: fadump: pair alloc_pages_exact() with free_pages_exact()
memblock: reserve_mem: fix end caclulation in reserve_mem_release_by_name()
memblock: move reserve_bootmem_range() to memblock.c and make it static
memblock: Add reserve_mem debugfs info
memblock: Print out errors on reserve_mem parser
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git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Namhyung Kim:
"perf report:
- Add 'comm_nodigit' sort key to combine similar threads that only
have different numbers in the comm. In the following example, the
'comm_nodigit' will have samples from all threads starting with
"bpfrb/" into an entry "bpfrb/<N>".
$ perf report -s comm_nodigit,comm -H
...
#
# Overhead CommandNoDigit / Command
# ........... ........................
#
20.30% swapper
20.30% swapper
13.37% chrome
13.37% chrome
10.07% bpfrb/<N>
7.47% bpfrb/0
0.70% bpfrb/1
0.47% bpfrb/3
0.46% bpfrb/2
0.25% bpfrb/4
0.23% bpfrb/5
0.20% bpfrb/6
0.14% bpfrb/10
0.07% bpfrb/7
- Support flat layout for symfs. The --symfs option is to specify the
location of debugging symbol files. The default 'hierarchy' layout
would search the symbol file using the same path of the original
file under the symfs root. The new 'flat' layout would search only
in the root directory.
- Update 'simd' sort key for ARM SIMD flags to cover ASE/SME and more
predicate flags.
perf stat:
- Add --pmu-filter option to select specific PMUs. This would be
useful when you measure metrics from multiple instance of uncore
PMUs with similar names.
# perf stat -M cpa_p0_avg_bw
Performance counter stats for 'system wide':
19,417,779,115 hisi_sicl0_cpa0/cpa_cycles/ # 0.00 cpa_p0_avg_bw
0 hisi_sicl0_cpa0/cpa_p0_wr_dat/
0 hisi_sicl0_cpa0/cpa_p0_rd_dat_64b/
0 hisi_sicl0_cpa0/cpa_p0_rd_dat_32b/
19,417,751,103 hisi_sicl10_cpa0/cpa_cycles/ # 0.00 cpa_p0_avg_bw
0 hisi_sicl10_cpa0/cpa_p0_wr_dat/
0 hisi_sicl10_cpa0/cpa_p0_rd_dat_64b/
0 hisi_sicl10_cpa0/cpa_p0_rd_dat_32b/
19,417,730,679 hisi_sicl2_cpa0/cpa_cycles/ # 0.31 cpa_p0_avg_bw
75,635,749 hisi_sicl2_cpa0/cpa_p0_wr_dat/
18,520,640 hisi_sicl2_cpa0/cpa_p0_rd_dat_64b/
0 hisi_sicl2_cpa0/cpa_p0_rd_dat_32b/
19,417,674,227 hisi_sicl8_cpa0/cpa_cycles/ # 0.00 cpa_p0_avg_bw
0 hisi_sicl8_cpa0/cpa_p0_wr_dat/
0 hisi_sicl8_cpa0/cpa_p0_rd_dat_64b/
0 hisi_sicl8_cpa0/cpa_p0_rd_dat_32b/
19.417734480 seconds time elapsed
With --pmu-filter, users can select only hisi_sicl2_cpa0 PMU.
# perf stat --pmu-filter hisi_sicl2_cpa0 -M cpa_p0_avg_bw
Performance counter stats for 'system wide':
6,234,093,559 cpa_cycles # 0.60 cpa_p0_avg_bw
50,548,465 cpa_p0_wr_dat
7,552,182 cpa_p0_rd_dat_64b
0 cpa_p0_rd_dat_32b
6.234139320 seconds time elapsed
Data type profiling:
- Quality improvements by tracking register state more precisely
- Ensure array members to get the type
- Handle more cases for global variables
Vendor event/metric updates:
- Update various Intel events and metrics
- Add NVIDIA Tegra 410 Olympus events
Internal changes:
- Verify perf.data header for maliciously crafted files
- Update perf test to cover more usages and make them robust
- Move a couple of copied kernel headers not to annoy objtool build
- Fix a bug in map sorting in name order
- Remove some unused codes
Misc:
- Fix module symbol resolution with non-zero text address
- Add -t/--threads option to `perf bench mem mmap`
- Track duration of exit*() syscall by `perf trace -s`
- Add core.addr2line-timeout and core.addr2line-disable-warn config
items"
* tag 'perf-tools-for-v7.1-2026-04-17' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (131 commits)
perf loongarch: Fix build failure with CONFIG_LIBDW_DWARF_UNWIND
perf annotate: Use jump__delete when freeing LoongArch jumps
perf test: Fixes for check branch stack sampling
perf test: Fix inet_pton probe failure and unroll call graph
perf build: fix "argument list too long" in second location
perf header: Add sanity checks to HEADER_BPF_BTF processing
perf header: Sanity check HEADER_BPF_PROG_INFO
perf header: Sanity check HEADER_PMU_CAPS
perf header: Sanity check HEADER_HYBRID_TOPOLOGY
perf header: Sanity check HEADER_CACHE
perf header: Sanity check HEADER_GROUP_DESC
perf header: Sanity check HEADER_PMU_MAPPINGS
perf header: Sanity check HEADER_MEM_TOPOLOGY
perf header: Sanity check HEADER_NUMA_TOPOLOGY
perf header: Sanity check HEADER_CPU_TOPOLOGY
perf header: Sanity check HEADER_NRCPUS and HEADER_CPU_DOMAIN_INFO
perf header: Bump up the max number of command line args allowed
perf header: Validate nr_domains when reading HEADER_CPU_DOMAIN_INFO
perf sample: Fix documentation typo
perf arm_spe: Improve SIMD flags setting
...
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charge_reserved_hugetlb.sh tears down background writers with killall from
psmisc. Minimal Ubuntu images do not always provide that tool, so the
selftest fails in cleanup for an environment reason rather than for the
hugetlb behavior it is trying to cover.
Skip the test when killall is unavailable, similar to the existing root
check, so these environments report the dependency clearly instead of
failing the test.
Link: https://lore.kernel.org/20260410044139.67480-1-create0818@163.com
Signed-off-by: Cao Ruichuang <create0818@163.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.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>
|
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The test requires thp, skip the test when thp is not available to avoid
false positive.
Tested with thp disabled kernel.
Before the fix:
# --------------------------------
# running ./transhuge-stress -d 20
# --------------------------------
# TAP version 13
# 1..1
# transhuge-stress: allocate 1453 transhuge pages, using 2907 MiB virtual memory and 11 MiB of ram
# Bail out! MADV_HUGEPAGE# Planned tests != run tests (1 != 0)
# # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0
# [FAIL]
not ok 60 transhuge-stress -d 20 # exit=1
After the fix:
# --------------------------------
# running ./transhuge-stress -d 20
# --------------------------------
# TAP version 13
# 1..0 # SKIP Transparent Hugepages not available
# [SKIP]
ok 5 transhuge-stress -d 20 # SKIP
Link: https://lore.kernel.org/20260402014543.1671131-7-chuhu@redhat.com
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Li Wang <liwang@redhat.com>
Cc: Nico Pache <npache@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
When thp is not enabled on some kernel config such as realtime kernel, the
test will report failure. Fix the false positive by skipping the test
directly when thp is not enabled.
Tested with thp disabled kernel:
Before The fix:
# --------------------------------------------------
# running ./split_huge_page_test /tmp/xfs_dir_Ywup9p
# --------------------------------------------------
# TAP version 13
# Bail out! Reading PMD pagesize failed
# # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0
# [FAIL]
not ok 61 split_huge_page_test /tmp/xfs_dir_Ywup9p # exit=1
After the fix:
# --------------------------------------------------
# running ./split_huge_page_test /tmp/xfs_dir_YHPUPl
# --------------------------------------------------
# TAP version 13
# 1..0 # SKIP Transparent Hugepages not available
# [SKIP]
ok 6 split_huge_page_test /tmp/xfs_dir_YHPUPl # SKIP
Link: https://lore.kernel.org/20260402014543.1671131-6-chuhu@redhat.com
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Li Wang <liwang@redhat.com>
Cc: Nico Pache <npache@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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Add three more checks for buflen and numwritten. The buflen should be at
least two, that means at least one char and the null-end. The error case
check is added by checking numwriten < 0 instead of numwritten < 1. And
the truncate case is checked. The test will exit if any of these
conditions aren't met.
Additionally, add more print information when a write failure occurs or a
truncated write happens, providing clearer diagnostics.
Link: https://lore.kernel.org/20260402014543.1671131-5-chuhu@redhat.com
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org>
Cc: Nico Pache <npache@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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thp_settings provides write_file() helper for safely writing to a file and
exit when write failure happens. It's a very low level helper and many
sub tests need such a helper, not only thp tests.
split_huge_page_test also defines a write_file locally. The two have
minior differences in return type and used exit api. And there would be
conflicts if split_huge_page_test wanted to include thp_settings.h because
of different prototype, making it less convenient.
It's possisble to merge the two, although some tests don't use the
kselftest infrastrucutre for testing. It would also work when using the
ksft_exit_msg() to exit in my test, as the counters are all zero. Output
will be like:
TAP version 13
1..62
Bail out! /proc/sys/vm/drop_caches1 open failed: No such file or directory
# Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0
So here we just keep the version in split_huge_page_test, and move it into
the vm_util. This makes it easy to maitain and user could just include
one vm_util.h when they don't need thp setting helpers. Keep the
prototype of void return as the function will exit on any error, return
value is not necessary, and will simply the callers like write_num() and
write_string().
Link: https://lore.kernel.org/20260402014543.1671131-4-chuhu@redhat.com
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Suggested-by: Mike Rapoport <rppt@kernel.org>
Cc: Nico Pache <npache@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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The test_hugepage test contain two sub tests. If just reporting one skip
when thp not available, there will be error in the log because the test
count don't match the test plan. Change to skip two tests by running the
ksft_test_result_skip twice in this case.
Without the fix (run test on thp disabled kernel):
./run_vmtests.sh -t soft_dirty
# --------------------
# running ./soft-dirty
# --------------------
# TAP version 13
# 1..19
# ok 1 Test test_simple
# ok 2 Test test_vma_reuse dirty bit of allocated page
# ok 3 Test test_vma_reuse dirty bit of reused address page
# ok 4 # SKIP Transparent Hugepages not available
# ok 5 Test test_mprotect-anon dirty bit of new written page
# ok 6 Test test_mprotect-anon soft-dirty clear after clear_refs
# ok 7 Test test_mprotect-anon soft-dirty clear after marking RO
# ok 8 Test test_mprotect-anon soft-dirty clear after marking RW
# ok 9 Test test_mprotect-anon soft-dirty after rewritten
# ok 10 Test test_mprotect-file dirty bit of new written page
# ok 11 Test test_mprotect-file soft-dirty clear after clear_refs
# ok 12 Test test_mprotect-file soft-dirty clear after marking RO
# ok 13 Test test_mprotect-file soft-dirty clear after marking RW
# ok 14 Test test_mprotect-file soft-dirty after rewritten
# ok 15 Test test_merge-anon soft-dirty after remap merge 1st pg
# ok 16 Test test_merge-anon soft-dirty after remap merge 2nd pg
# ok 17 Test test_merge-anon soft-dirty after mprotect merge 1st pg
# ok 18 Test test_merge-anon soft-dirty after mprotect merge 2nd pg
# # 1 skipped test(s) detected. Consider enabling relevant config options to improve coverage.
# # Planned tests != run tests (19 != 18)
# # Totals: pass:17 fail:0 xfail:0 xpass:0 skip:1 error:0
# [FAIL]
not ok 52 soft-dirty # exit=1
With the fix (run test on thp disabled kernel):
./run_vmtests.sh -t soft_dirty
# --------------------
# running ./soft-dirty
# TAP version 13
# --------------------
# running ./soft-dirty
# --------------------
# TAP version 13
# 1..19
# ok 1 Test test_simple
# ok 2 Test test_vma_reuse dirty bit of allocated page
# ok 3 Test test_vma_reuse dirty bit of reused address page
# # Transparent Hugepages not available
# ok 4 # SKIP Test test_hugepage huge page allocation
# ok 5 # SKIP Test test_hugepage huge page dirty bit
# ok 6 Test test_mprotect-anon dirty bit of new written page
# ok 7 Test test_mprotect-anon soft-dirty clear after clear_refs
# ok 8 Test test_mprotect-anon soft-dirty clear after marking RO
# ok 9 Test test_mprotect-anon soft-dirty clear after marking RW
# ok 10 Test test_mprotect-anon soft-dirty after rewritten
# ok 11 Test test_mprotect-file dirty bit of new written page
# ok 12 Test test_mprotect-file soft-dirty clear after clear_refs
# ok 13 Test test_mprotect-file soft-dirty clear after marking RO
# ok 14 Test test_mprotect-file soft-dirty clear after marking RW
# ok 15 Test test_mprotect-file soft-dirty after rewritten
# ok 16 Test test_merge-anon soft-dirty after remap merge 1st pg
# ok 17 Test test_merge-anon soft-dirty after remap merge 2nd pg
# ok 18 Test test_merge-anon soft-dirty after mprotect merge 1st pg
# ok 19 Test test_merge-anon soft-dirty after mprotect merge 2nd pg
# # 2 skipped test(s) detected. Consider enabling relevant config options to improve coverage.
# # Totals: pass:17 fail:0 xfail:0 xpass:0 skip:2 error:0
# [PASS]
ok 1 soft-dirty
hwpoison_inject
# SUMMARY: PASS=1 SKIP=0 FAIL=0
1..1
Link: https://lore.kernel.org/20260402014543.1671131-3-chuhu@redhat.com
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Li Wang <liwang@redhat.com>
Cc: Nico Pache <npache@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Patch series "selftests/mm: skip several tests when thp is not available",
v8.
There are several tests requires transprarent hugepages, when run on thp
disabled kernel such as realtime kernel, there will be false negative.
Mark those tests as skip when thp is not available.
This patch (of 6):
When thp is not available, just skip the collape tests to avoid the false
negative.
Without the change, run with a thp disabled kernel:
./run_vmtests.sh -t madv_guard -n 1
<snip/>
# RUN guard_regions.anon.collapse ...
# guard-regions.c:2217:collapse:Expected madvise(ptr, size, MADV_NOHUGEPAGE) (-1) == 0 (0)
# collapse: Test terminated by assertion
# FAIL guard_regions.anon.collapse
not ok 2 guard_regions.anon.collapse
<snip/>
# RUN guard_regions.shmem.collapse ...
# guard-regions.c:2217:collapse:Expected madvise(ptr, size, MADV_NOHUGEPAGE) (-1) == 0 (0)
# collapse: Test terminated by assertion
# FAIL guard_regions.shmem.collapse
not ok 32 guard_regions.shmem.collapse
<snip/>
# RUN guard_regions.file.collapse ...
# guard-regions.c:2217:collapse:Expected madvise(ptr, size, MADV_NOHUGEPAGE) (-1) == 0 (0)
# collapse: Test terminated by assertion
# FAIL guard_regions.file.collapse
not ok 62 guard_regions.file.collapse
<snip/>
# FAILED: 87 / 90 tests passed.
# 17 skipped test(s) detected. Consider enabling relevant config options to improve coverage.
# Totals: pass:70 fail:3 xfail:0 xpass:0 skip:17 error:0
With this change, run with thp disabled kernel:
./run_vmtests.sh -t madv_guard -n 1
<snip/>
# RUN guard_regions.anon.collapse ...
# SKIP Transparent Hugepages not available
# OK guard_regions.anon.collapse
ok 2 guard_regions.anon.collapse # SKIP Transparent Hugepages not available
<snip/>
# RUN guard_regions.file.collapse ...
# SKIP Transparent Hugepages not available
# OK guard_regions.file.collapse
ok 62 guard_regions.file.collapse # SKIP Transparent Hugepages not available
<snip/>
# RUN guard_regions.shmem.collapse ...
# SKIP Transparent Hugepages not available
# OK guard_regions.shmem.collapse
ok 32 guard_regions.shmem.collapse # SKIP Transparent Hugepages not available
<snip/>
# PASSED: 90 / 90 tests passed.
# 20 skipped test(s) detected. Consider enabling relevant config options to improve coverage.
# Totals: pass:70 fail:0 xfail:0 xpass:0 skip:20 error:0
Link: https://lore.kernel.org/20260402014543.1671131-1-chuhu@redhat.com
Link: https://lore.kernel.org/20260402014543.1671131-2-chuhu@redhat.com
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Li Wang <liwang@redhat.com>
Cc: Nico Pache <npache@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Several HMM tests hardcode TWOMEG as the THP size. This is wrong on
architectures where the PMD size is not 2MB such as arm64 with 64K base
pages where THP is 512MB. Fix this by using read_pmd_pagesize() from
vm_util instead.
While here also replace the custom file_read_ulong() helper used to
parse the default hugetlbfs page size from /proc/meminfo with the
existing default_huge_page_size() from vm_util.
Link: https://lore.kernel.org/20260331063445.3551404-3-apopple@nvidia.com
Link: https://lore.kernel.org/linux-mm/8bd0396a-8997-4d2e-a13f-5aac033083d7@linux.dev/
Fixes: fee9f6d1b8df ("mm/hmm/test: add selftests for HMM")
Fixes: 519071529d2a ("selftests/mm/hmm-tests: new tests for zone device THP migration")
Signed-off-by: Alistair Popple <apopple@nvidia.com>
Reported-by: Zenghui Yu <zenghui.yu@linux.dev>
Closes: https://lore.kernel.org/linux-mm/8bd0396a-8997-4d2e-a13f-5aac033083d7@linux.dev/
Reviewed-by: Balbir Singh <balbirs@nvidia.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: <stable@vger,kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
hugetlb_dio test uses sub-page offsets (pagesize / 2) to verify that
hugepages used as DIO user buffers are correctly unpinned at completion.
However, on filesystems with a logical block size larger than half the
page size (e.g., 4K-sector block devices), these unaligned DIO writes are
rejected with -EINVAL, causing the test to fail unexpectedly.
Add get_dio_alignment() to query the filesystem's required DIO alignment
via statx(STATX_DIOALIGN) and skip individual test cases whose file offset
or write size is not a multiple of that alignment. Aligned cases continue
to run so the core coverage is preserved.
While here, open the temporary file once in main() and share the fd across
all test cases instead of reopening it in each invocation.
=== Reproduce Steps ===
# dd if=/dev/zero of=/tmp/test.img bs=1M count=512
# losetup --sector-size 4096 /dev/loop0 /tmp/test.img
# mkfs.xfs /dev/loop0
# mkdir -p /mnt/dio_test
# mount /dev/loop0 /mnt/dio_test
// Modify test to open /mnt/dio_test and rebuild it:
- fd = open("/tmp", O_TMPFILE | O_RDWR | O_DIRECT, 0664);
+ fd = open("/mnt/dio_test", O_TMPFILE | O_RDWR | O_DIRECT, 0664);
# getconf PAGESIZE
4096
# echo 100 >/proc/sys/vm/nr_hugepages
# ./hugetlb_dio
TAP version 13
1..4
# No. Free pages before allocation : 100
# No. Free pages after munmap : 100
ok 1 free huge pages from 0-12288
Bail out! Error writing to file
: Invalid argument (22)
# Planned tests != run tests (4 != 1)
# Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0
Link: https://lore.kernel.org/20260401090520.24018-1-liwang@redhat.com
Signed-off-by: Li Wang <liwang@redhat.com>
Suggested-by: Mike Rapoport <rppt@kernel.org>
Suggested-by: David Hildenbrand <david@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes (Oracle) <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>
|
|
Commit 2697dd8ae721 ("mm/mseal: update VMA end correctly on merge") fixed
an issue in the loop which iterates through VMAs applying mseal, which was
triggered by mseal()'ing a range of VMAs where the second was mseal()'d
and the first mergeable with it, once mseal()'d.
Add a regression test to assert that this behaviour is correct. We place
it in the merge selftests as this is strictly an issue with merging (via a
vma_modify() invocation).
It also asserts that mseal()'d ranges are correctly merged as you'd
expect.
The test is implemented such that it is skipped if mseal() is not
available on the system.
[rppt@kernel.org: fix inclusions, to fix handle_uprobe_upon_merged_vma()]
Link: https://lore.kernel.org/ac_mCIUQWRAbuH8F@kernel.org
[ljs@kernel.org: simplifications per Pedro]
Link: https://lore.kernel.org/1c9c922d-5cb5-4cff-9273-b737cdb57ca1@lucifer.local
Link: https://lore.kernel.org/20260331073627.50010-1-ljs@kernel.org
Signed-off-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Signed-off-by: Mike Rapoport <rppt@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Pedro Falcato <pfalcato@suse.de>
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>
|
|
Verify that a file can only be preserved once across all active sessions.
Attempting to preserve it a second time, whether in the same or a
different session, should fail with EBUSY.
Link: https://lore.kernel.org/20260326163943.574070-4-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Samiullah Khawaja <skhawaja@google.com>
Cc: David Matlack <dmatlack@google.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Pull bpf fixes from Alexei Starovoitov:
"Most of the diff stat comes from Xu Kuohai's fix to emit ENDBR/BTI,
since all JITs had to be touched to move constant blinding out and
pass bpf_verifier_env in.
- Fix use-after-free in arena_vm_close on fork (Alexei Starovoitov)
- Dissociate struct_ops program with map if map_update fails (Amery
Hung)
- Fix out-of-range and off-by-one bugs in arm64 JIT (Daniel Borkmann)
- Fix precedence bug in convert_bpf_ld_abs alignment check (Daniel
Borkmann)
- Fix arg tracking for imprecise/multi-offset in BPF_ST/STX insns
(Eduard Zingerman)
- Copy token from main to subprogs to fix missing kallsyms (Eduard
Zingerman)
- Prevent double close and leak of btf objects in libbpf (Jiri Olsa)
- Fix af_unix null-ptr-deref in sockmap (Michal Luczaj)
- Fix NULL deref in map_kptr_match_type for scalar regs (Mykyta
Yatsenko)
- Avoid unnecessary IPIs. Remove redundant bpf_flush_icache() in
arm64 and riscv JITs (Puranjay Mohan)
- Fix out of bounds access. Validate node_id in arena_alloc_pages()
(Puranjay Mohan)
- Reject BPF-to-BPF calls and callbacks in arm32 JIT (Puranjay Mohan)
- Refactor all JITs to pass bpf_verifier_env to emit ENDBR/BTI for
indirect jump targets on x86-64, arm64 JITs (Xu Kuohai)
- Allow UTF-8 literals in bpf_bprintf_prepare() (Yihan Ding)"
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (32 commits)
bpf, arm32: Reject BPF-to-BPF calls and callbacks in the JIT
bpf: Dissociate struct_ops program with map if map_update fails
bpf: Validate node_id in arena_alloc_pages()
libbpf: Prevent double close and leak of btf objects
selftests/bpf: cover UTF-8 trace_printk output
bpf: allow UTF-8 literals in bpf_bprintf_prepare()
selftests/bpf: Reject scalar store into kptr slot
bpf: Fix NULL deref in map_kptr_match_type for scalar regs
bpf: Fix precedence bug in convert_bpf_ld_abs alignment check
bpf, arm64: Emit BTI for indirect jump target
bpf, x86: Emit ENDBR for indirect jump targets
bpf: Add helper to detect indirect jump targets
bpf: Pass bpf_verifier_env to JIT
bpf: Move constants blinding out of arch-specific JITs
bpf, sockmap: Take state lock for af_unix iter
bpf, sockmap: Fix af_unix null-ptr-deref in proto update
selftests/bpf: Extend bpf_iter_unix to attempt deadlocking
bpf, sockmap: Fix af_unix iter deadlock
bpf, sockmap: Annotate af_unix sock:: Sk_state data-races
selftests/bpf: verify kallsyms entries for token-loaded subprograms
...
|
|
Pull CXL (Compute Express Link) updates from Dave Jiang:
"The significant change of interest is the handling of soft reserved
memory conflict between CXL and HMEM. In essence CXL will be the first
to claim the soft reserved memory ranges that belongs to CXL and
attempt to enumerate them with best effort. If CXL is not able to
enumerate the ranges it will punt them to HMEM.
There are also MAINTAINERS email changes from Dan Williams and
Jonathan Cameron"
* tag 'cxl-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (37 commits)
MAINTAINERS: Update Jonathan Cameron's email address
cxl/hdm: Add support for 32 switch decoders
MAINTAINERS: Update address for Dan Williams
tools/testing/cxl: Enable replay of user regions as auto regions
cxl/region: Add a region sysfs interface for region lock status
tools/testing/cxl: Test dax_hmem takeover of CXL regions
tools/testing/cxl: Simulate auto-assembly failure
dax/hmem: Parent dax_hmem devices
dax/hmem: Fix singleton confusion between dax_hmem_work and hmem devices
dax/hmem: Reduce visibility of dax_cxl coordination symbols
cxl/region: Constify cxl_region_resource_contains()
cxl/region: Limit visibility of cxl_region_contains_resource()
dax/cxl: Fix HMEM dependencies
cxl/region: Fix use-after-free from auto assembly failure
cxl/core: Check existence of cxl_memdev_state in poison test
cxl/core: use cleanup.h for devm_cxl_add_dax_region
cxl/core/region: move dax region device logic into region_dax.c
cxl/core/region: move pmem region driver logic into region_pmem.c
dax/hmem, cxl: Defer and resolve Soft Reserved ownership
cxl/region: Add helper to check Soft Reserved containment by CXL regions
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux
Pull dma-mapping updates from Marek Szyprowski:
- added support for batched cache sync, what improves performance of
dma_map/unmap_sg() operations on ARM64 architecture (Barry Song)
- introduced DMA_ATTR_CC_SHARED attribute for explicitly shared memory
used in confidential computing (Jiri Pirko)
- refactored spaghetti-like code in drivers/of/of_reserved_mem.c and
its clients (Marek Szyprowski, shared branch with device-tree updates
to avoid merge conflicts)
- prepared Contiguous Memory Allocator related code for making dma-buf
drivers modularized (Maxime Ripard)
- added support for benchmarking dma_map_sg() calls to tools/dma
utility (Qinxin Xia)
* tag 'dma-mapping-7.1-2026-04-16' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: (24 commits)
dma-buf: heaps: system: document system_cc_shared heap
dma-buf: heaps: system: add system_cc_shared heap for explicitly shared memory
dma-mapping: introduce DMA_ATTR_CC_SHARED for shared memory
mm: cma: Export cma_alloc(), cma_release() and cma_get_name()
dma: contiguous: Export dev_get_cma_area()
dma: contiguous: Make dma_contiguous_default_area static
dma: contiguous: Make dev_get_cma_area() a proper function
dma: contiguous: Turn heap registration logic around
of: reserved_mem: rework fdt_init_reserved_mem_node()
of: reserved_mem: clarify fdt_scan_reserved_mem*() functions
of: reserved_mem: rearrange code a bit
of: reserved_mem: replace CMA quirks by generic methods
of: reserved_mem: switch to ops based OF_DECLARE()
of: reserved_mem: use -ENODEV instead of -ENOENT
of: reserved_mem: remove fdt node from the structure
dma-mapping: fix false kernel-doc comment marker
dma-mapping: Support batch mode for dma_direct_{map,unmap}_sg
dma-mapping: Separate DMA sync issuing and completion waiting
arm64: Provide dcache_inval_poc_nosync helper
arm64: Provide dcache_clean_poc_nosync helper
...
|
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Commit 2964f6b816c2 ("selftests: Use ktap helpers for runner.sh") converted
the prints in runner.sh to use the relevant helpers from ktap_helpers.sh,
not modifying any of the strings printed in the process. This included
converting all the result reports to use the relevant ktap_test_ function.
Since the output was originally KTAP compliant the strings reported for
test names now include test numbers:
ok 59 59 selftests: arm64: syscall-abi
instead of the expected format:
ok 59 selftests: arm64: syscall-abi
which causes result parsers to interpret the second number as part of the
test name.
Given the use of the helpers the tracking of test numbers by runner.sh is
now redundant, remove it entirely to restore the expected output format.
Link: https://lore.kernel.org/r/20260417-selftests-fix-double-number-v1-1-1be5d7c36b94@kernel.org
Fixes: 2964f6b816c2 ("selftests: Use ktap helpers for runner.sh")
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Fix printf format warning for bprintf
sunrpc uses a trace_printk() that triggers a printf warning during
the compile. Move the __printf() attribute around for when debugging
is not enabled the warning will go away
- Remove redundant check for EVENT_FILE_FL_FREED in
event_filter_write()
The FREED flag is checked in the call to event_file_file() and then
checked again right afterward, which is unneeded
- Clean up event_file_file() and event_file_data() helpers
These helper functions played a different role in the past, but now
with eventfs, the READ_ONCE() isn't needed. Simplify the code a bit
and also add a warning to event_file_data() if the file or its data
is not present
- Remove updating file->private_data in tracing open
All access to the file private data is handled by the helper
functions, which do not use file->private_data. Stop updating it on
open
- Show ENUM names in function arguments via BTF in function tracing
When showing the function arguments when func-args option is set for
function tracing, if one of the arguments is found to be an enum,
show the name of the enum instead of its number
- Add new trace_call__##name() API for tracepoints
Tracepoints are enabled via static_branch() blocks, where when not
enabled, there's only a nop that is in the code where the execution
will just skip over it. When tracing is enabled, the nop is converted
to a direct jump to the tracepoint code. Sometimes more calculations
are required to be performed to update the parameters of the
tracepoint. In this case, trace_##name##_enabled() is called which is
a static_branch() that gets enabled only when the tracepoint is
enabled. This allows the extra calculations to also be skipped by the
nop:
if (trace_foo_enabled()) {
x = bar();
trace_foo(x);
}
Where the x=bar() is only performed when foo is enabled. The problem
with this approach is that there's now two static_branch() calls. One
for checking if the tracepoint is enabled, and then again to know if
the tracepoint should be called. The second one is redundant
Introduce trace_call__foo() that will call the foo() tracepoint
directly without doing a static_branch():
if (trace_foo_enabled()) {
x = bar();
trace_call__foo();
}
- Update various locations to use the new trace_call__##name() API
- Move snapshot code out of trace.c
Cleaning up trace.c to not be a "dump all", move the snapshot code
out of it and into a new trace_snapshot.c file
- Clean up some "%*.s" to "%*s"
- Allow boot kernel command line options to be called multiple times
Have options like:
ftrace_filter=foo ftrace_filter=bar ftrace_filter=zoo
Equal to:
ftrace_filter=foo,bar,zoo
- Fix ipi_raise event CPU field to be a CPU field
The ipi_raise target_cpus field is defined as a __bitmask(). There is
now a __cpumask() field definition. Update the field to use that
- Have hist_field_name() use a snprintf() and not a series of strcat()
It's safer to use snprintf() that a series of strcat()
- Fix tracepoint regfunc balancing
A tracepoint can define a "reg" and "unreg" function that gets called
before the tracepoint is enabled, and after it is disabled
respectively. But on error, after the "reg" func is called and the
tracepoint is not enabled, the "unreg" function is not called to tear
down what the "reg" function performed
- Fix output that shows what histograms are enabled
Event variables are displayed incorrectly in the histogram output
Instead of "sched.sched_wakeup.$var", it is showing
"$sched.sched_wakeup.var" where the '$' is in the incorrect location
- Some other simple cleanups
* tag 'trace-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (24 commits)
selftests/ftrace: Add test case for fully-qualified variable references
tracing: Fix fully-qualified variable reference printing in histograms
tracepoint: balance regfunc() on func_add() failure in tracepoint_add_func()
tracing: Rebuild full_name on each hist_field_name() call
tracing: Report ipi_raise target CPUs as cpumask
tracing: Remove duplicate latency_fsnotify() stub
tracing: Preserve repeated trace_trigger boot parameters
tracing: Append repeated boot-time tracing parameters
tracing: Remove spurious default precision from show_event_trigger/filter formats
cpufreq: Use trace_call__##name() at guarded tracepoint call sites
tracing: Remove tracing_alloc_snapshot() when snapshot isn't defined
tracing: Move snapshot code out of trace.c and into trace_snapshot.c
mm: damon: Use trace_call__##name() at guarded tracepoint call sites
btrfs: Use trace_call__##name() at guarded tracepoint call sites
spi: Use trace_call__##name() at guarded tracepoint call sites
i2c: Use trace_call__##name() at guarded tracepoint call sites
kernel: Use trace_call__##name() at guarded tracepoint call sites
tracepoint: Add trace_call__##name() API
tracing: trace_mmap.h: fix a kernel-doc warning
tracing: Pretty-print enum parameters in function arguments
...
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Pull kvm updates from Paolo Bonzini:
"Arm:
- Add support for tracing in the standalone EL2 hypervisor code,
which should help both debugging and performance analysis. This
uses the new infrastructure for 'remote' trace buffers that can be
exposed by non-kernel entities such as firmware, and which came
through the tracing tree
- Add support for GICv5 Per Processor Interrupts (PPIs), as the
starting point for supporting the new GIC architecture in KVM
- Finally add support for pKVM protected guests, where pages are
unmapped from the host as they are faulted into the guest and can
be shared back from the guest using pKVM hypercalls. Protected
guests are created using a new machine type identifier. As the
elusive guestmem has not yet delivered on its promises, anonymous
memory is also supported
This is only a first step towards full isolation from the host; for
example, the CPU register state and DMA accesses are not yet
isolated. Because this does not really yet bring fully what it
promises, it is hidden behind CONFIG_ARM_PKVM_GUEST +
'kvm-arm.mode=protected', and also triggers TAINT_USER when a VM is
created. Caveat emptor
- Rework the dreaded user_mem_abort() function to make it more
maintainable, reducing the amount of state being exposed to the
various helpers and rendering a substantial amount of state
immutable
- Expand the Stage-2 page table dumper to support NV shadow page
tables on a per-VM basis
- Tidy up the pKVM PSCI proxy code to be slightly less hard to
follow
- Fix both SPE and TRBE in non-VHE configurations so that they do not
generate spurious, out of context table walks that ultimately lead
to very bad HW lockups
- A small set of patches fixing the Stage-2 MMU freeing in error
cases
- Tighten-up accepted SMC immediate value to be only #0 for host
SMCCC calls
- The usual cleanups and other selftest churn
LoongArch:
- Use CSR_CRMD_PLV for kvm_arch_vcpu_in_kernel()
- Add DMSINTC irqchip in kernel support
RISC-V:
- Fix steal time shared memory alignment checks
- Fix vector context allocation leak
- Fix array out-of-bounds in pmu_ctr_read() and pmu_fw_ctr_read_hi()
- Fix double-free of sdata in kvm_pmu_clear_snapshot_area()
- Fix integer overflow in kvm_pmu_validate_counter_mask()
- Fix shift-out-of-bounds in make_xfence_request()
- Fix lost write protection on huge pages during dirty logging
- Split huge pages during fault handling for dirty logging
- Skip CSR restore if VCPU is reloaded on the same core
- Implement kvm_arch_has_default_irqchip() for KVM selftests
- Factored-out ISA checks into separate sources
- Added hideleg to struct kvm_vcpu_config
- Factored-out VCPU config into separate sources
- Support configuration of per-VM HGATP mode from KVM user space
s390:
- Support for ESA (31-bit) guests inside nested hypervisors
- Remove restriction on memslot alignment, which is not needed
anymore with the new gmap code
- Fix LPSW/E to update the bear (which of course is the breaking
event address register)
x86:
- Shut up various UBSAN warnings on reading module parameter before
they were initialized
- Don't zero-allocate page tables that are used for splitting
hugepages in the TDP MMU, as KVM is guaranteed to set all SPTEs in
the page table and thus write all bytes
- As an optimization, bail early when trying to unsync 4KiB mappings
if the target gfn can just be mapped with a 2MiB hugepage
x86 generic:
- Copy single-chunk MMIO write values into struct kvm_vcpu (more
precisely struct kvm_mmio_fragment) to fix use-after-free stack
bugs where KVM would dereference stack pointer after an exit to
userspace
- Clean up and comment the emulated MMIO code to try to make it
easier to maintain (not necessarily "easy", but "easier")
- Move VMXON+VMXOFF and EFER.SVME toggling out of KVM (not *all* of
VMX and SVM enabling) as it is needed for trusted I/O
- Advertise support for AVX512 Bit Matrix Multiply (BMM) instructions
- Immediately fail the build if a required #define is missing in one
of KVM's headers that is included multiple times
- Reject SET_GUEST_DEBUG with -EBUSY if there's an already injected
exception, mostly to prevent syzkaller from abusing the uAPI to
trigger WARNs, but also because it can help prevent userspace from
unintentionally crashing the VM
- Exempt SMM from CPUID faulting on Intel, as per the spec
- Misc hardening and cleanup changes
x86 (AMD):
- Fix and optimize IRQ window inhibit handling for AVIC; make it
per-vCPU so that KVM doesn't prematurely re-enable AVIC if multiple
vCPUs have to-be-injected IRQs
- Clean up and optimize the OSVW handling, avoiding a bug in which
KVM would overwrite state when enabling virtualization on multiple
CPUs in parallel. This should not be a problem because OSVW should
usually be the same for all CPUs
- Drop a WARN in KVM_MEMORY_ENCRYPT_REG_REGION where KVM complains
about a "too large" size based purely on user input
- Clean up and harden the pinning code for KVM_MEMORY_ENCRYPT_REG_REGION
- Disallow synchronizing a VMSA of an already-launched/encrypted
vCPU, as doing so for an SNP guest will crash the host due to an
RMP violation page fault
- Overhaul KVM's APIs for detecting SEV+ guests so that VM-scoped
queries are required to hold kvm->lock, and enforce it by lockdep.
Fix various bugs where sev_guest() was not ensured to be stable for
the whole duration of a function or ioctl
- Convert a pile of kvm->lock SEV code to guard()
- Play nicer with userspace that does not enable
KVM_CAP_EXCEPTION_PAYLOAD, for which KVM needs to set CR2 and DR6
as a response to ioctls such as KVM_GET_VCPU_EVENTS (even if the
payload would end up in EXITINFO2 rather than CR2, for example).
Only set CR2 and DR6 when consumption of the payload is imminent,
but on the other hand force delivery of the payload in all paths
where userspace retrieves CR2 or DR6
- Use vcpu->arch.cr2 when updating vmcb12's CR2 on nested #VMEXIT
instead of vmcb02->save.cr2. The value is out of sync after a
save/restore or after a #PF is injected into L2
- Fix a class of nSVM bugs where some fields written by the CPU are
not synchronized from vmcb02 to cached vmcb12 after VMRUN, and so
are not up-to-date when saved by KVM_GET_NESTED_STATE
- Fix a class of bugs where the ordering between KVM_SET_NESTED_STATE
and KVM_SET_{S}REGS could cause vmcb02 to be incorrectly
initialized after save+restore
- Add a variety of missing nSVM consistency checks
- Fix several bugs where KVM failed to correctly update VMCB fields
on nested #VMEXIT
- Fix several bugs where KVM failed to correctly synthesize #UD or
#GP for SVM-related instructions
- Add support for save+restore of virtualized LBRs (on SVM)
- Refactor various helpers and macros to improve clarity and
(hopefully) make the code easier to maintain
- Aggressively sanitize fields when copying from vmcb12, to guard
against unintentionally allowing L1 to utilize yet-to-be-defined
features
- Fix several bugs where KVM botched rAX legality checks when
emulating SVM instructions. There are remaining issues in that KVM
doesn't handle size prefix overrides for 64-bit guests
- Fail emulation of VMRUN/VMLOAD/VMSAVE if mapping vmcb12 fails
instead of somewhat arbitrarily synthesizing #GP (i.e. don't double
down on AMD's architectural but sketchy behavior of generating #GP
for "unsupported" addresses)
- Cache all used vmcb12 fields to further harden against TOCTOU bugs
x86 (Intel):
- Drop obsolete branch hint prefixes from the VMX instruction macros
- Use ASM_INPUT_RM() in __vmcs_writel() to coerce clang into using a
register input when appropriate
- Code cleanups
guest_memfd:
- Don't mark guest_memfd folios as accessed, as guest_memfd doesn't
support reclaim, the memory is unevictable, and there is no storage
to write back to
LoongArch selftests:
- Add KVM PMU test cases
s390 selftests:
- Enable more memory selftests
x86 selftests:
- Add support for Hygon CPUs in KVM selftests
- Fix a bug in the MSR test where it would get false failures on
AMD/Hygon CPUs with exactly one of RDPID or RDTSCP
- Add an MADV_COLLAPSE testcase for guest_memfd as a regression test
for a bug where the kernel would attempt to collapse guest_memfd
folios against KVM's will"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (373 commits)
KVM: x86: use inlines instead of macros for is_sev_*guest
x86/virt: Treat SVM as unsupported when running as an SEV+ guest
KVM: SEV: Goto an existing error label if charging misc_cg for an ASID fails
KVM: SVM: Move lock-protected allocation of SEV ASID into a separate helper
KVM: SEV: use mutex guard in snp_handle_guest_req()
KVM: SEV: use mutex guard in sev_mem_enc_unregister_region()
KVM: SEV: use mutex guard in sev_mem_enc_ioctl()
KVM: SEV: use mutex guard in snp_launch_update()
KVM: SEV: Assert that kvm->lock is held when querying SEV+ support
KVM: SEV: Document that checking for SEV+ guests when reclaiming memory is "safe"
KVM: SEV: Hide "struct kvm_sev_info" behind CONFIG_KVM_AMD_SEV=y
KVM: SEV: WARN on unhandled VM type when initializing VM
KVM: LoongArch: selftests: Add PMU overflow interrupt test
KVM: LoongArch: selftests: Add basic PMU event counting test
KVM: LoongArch: selftests: Add cpucfg read/write helpers
LoongArch: KVM: Add DMSINTC inject msi to vCPU
LoongArch: KVM: Add DMSINTC device support
LoongArch: KVM: Make vcpu_is_preempted() as a macro rather than function
LoongArch: KVM: Move host CSR_GSTAT save and restore in context switch
LoongArch: KVM: Move host CSR_EENTRY save and restore in context switch
...
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Starting one background YNL notification listener per peer back-to-back
can intermittently stall the test setup before the listeners even reach
the Python main function.
This was reproducible in a reduced test.sh setup-only loop: a single
listener stayed stable across repeated runs, while starting listeners
for all peers could hang early in the listener launch phase. Adding a
short delay between listener launches makes the listeners start cleanly
and eliminates the reproduced hangs in repeated normal and slow-runner
tests.
Serialize listener startup with a small sleep between setup_listener
calls.
Fixes: 77de28cd7cf1 ("selftests: ovpn: add notification parsing and matching")
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
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Current tests do not properly adhere to the TAP infrastructure
therefore they do not properly report failures leading to hangs of
the CI machinery.
Restructure ovpn selftests into using the TAP infrastructure: split each
test in stages, execute stage bodies with fail-fast semantics, and emit
KTAP pass/fail for each stage.
Centralize behavior control in common.sh and makes the scripts use
dedicated wrappers for required-success, expected-failure, and non-fatal
commands. Also add the OVPN_VERBOSE mode that exposes captured command
output for debugging.
This way tests won't hang anymore in case of failure when executed
within the CI machinery.
This change also makes default OVPN_CLI and YNL resolution
independent from the caller CWD by anchoring both to COMMON_DIR, so
behavior is stable across direct execution and run_tests-style
execution.
Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module")
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
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Current naming for shared variables, helpers and netnamespaces is
a bit unfortunate as it doesn't come with a clean prefix.
This showed to be problematic in case of name clashes with external
scripts or in case of abrupt test termination (hanging netns' weren't
easily reconducible to ovpn).
Rename common helper entry points and all shared globals in the ovpn
selftests to ovpn_ or OVPN_ names so test scripts and wrappers use a
single explicit prefix. Also rename the temporary network namespaces
created by the tests from peerN to ovpn_peerN. This makes leaked
namespaces easier to identify.
This is a mechanical refactor only, behavior is unchanged.
Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module")
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
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