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ASAN reported a number of resource leaks:
- Add missing *__destroy(skel) calls
- Replace bpf_link__detach() with bpf_link__destroy() where appropriate
- cgrp_local_storage: Add bpf_link__destroy() when bpf_iter_create fails
- dynptr: Add missing bpf_object__close()
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-16-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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ASAN reported a "joining already joined thread" error. The
release_child() may be called multiple times for the same struct
child.
Fix by resetting child->thread to 0 after pthread_join.
Also memset(0) static child variable in test_attach_api().
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-15-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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ASAN reported a use-after-free in close_xsk().
The xsk->socket internally references xsk->umem via socket->ctx->umem,
so the socket must be deleted before the umem. Fix the order of
operations in close_xsk().
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-14-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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ASAN detected a memory leak in veristat. The cleanup code handling
ENUMERATOR value missed freeing strdup-ed svalue. Fix it.
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-13-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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The Close() macro uses the passed in expression three times, which
leads to repeated execution in case it has side effects. That is,
Close(i--) would decrement i three times.
ASAN caught a stack-buffer-undeflow error at a point where this was
overlooked. Fix it.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-12-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Fix trivial memory leaks detected by userspace ASAN:
- htab_update: free value buffer in test_reenter_update cleanup
- test_xsk: inline pkt_stream_replace() in testapp_stats_rx_full()
and testapp_stats_fill_empty()
- testing_helpers: free buffer allocated by getline() in
parse_test_list_file
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-11-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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ASAN reported a memory leak in bpf_get_ksyms(): it allocates a struct
ksyms internally and never frees it.
Move struct ksyms to trace_helpers.h and return it from the
bpf_get_ksyms(), giving ownership to the caller. Add filtered_syms and
filtered_cnt fields to the ksyms to hold the filtered array of
symbols, previously returned by bpf_get_ksyms().
Fixup the call sites: kprobe_multi_test and bench_trigger.
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260223190736.649171-10-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a denylist file for tests that should be skipped when built with
userspace ASAN:
$ make ... SAN_CFLAGS="-fsanitize=address -fno-omit-frame-pointer"
Skip the following tests:
- *arena*: userspace ASAN does not understand BPF arena maps and gets
confused particularly when map_extra is non-zero
- non-zero map_extra leads to mmap with MAP_FIXED, and ASAN treats
this as an unknown memory region
- task_local_data: ASAN complains about "incorrect" aligned_alloc()
usage, but it's intentional in the test
- uprobe_multi_test: very slow with ASAN enabled
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-9-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Running resolve_btfids with ASAN reveals memory leaks in btf_id
handling.
- Change get_id() to use a local buffer
- Make btf_id__add() strdup the name internally
- Add btf_id__free_all() that frees all nodese of a tree
- Call the cleanup function on exit for every tree
Acked-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-8-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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EXTRA_* and SAN_* build flags were not correctly propagated to bpftool
and resolve_btids when building selftests/bpf. This led to various
build errors on attempt to build with SAN_CFLAGS="-fsanitize=address",
for example.
Fix the makefiles to address this:
- Pass SAN_CFLAGS/SAN_LDFLAGS to bpftool and resolve_btfids build
- Propagate EXTRA_LDFLAGS to resolve_btfids link command
- Use pkg-config to detect zlib and zstd for resolve_btfids, similar
libelf handling
Also check for ASAN flag in selftests/bpf/Makefile for convenience.
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-7-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Replace strncpy() with memcpy() in cases where the source is
non-NULL-terminated and the copy length is known.
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-6-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Replace strncpy() calls in bpftool_helpers.c with strscpy().
Pass the destination buffer size to detect_bpftool_path() instead of
hardcoding BPFTOOL_PATH_MAX_LEN.
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-5-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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strncpy() does not guarantee NULL-termination and is considered
deprecated [1]. Replace strncpy() calls with strscpy().
[1] https://docs.kernel.org/process/deprecated.html#strncpy-on-nul-terminated-strings
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-4-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Using set() removes duplicates but breaks ordering.
Test output should be deterministic, so replace with dict.fromkeys().
Signed-off-by: Naveen Anandhan <mr.navi8680@gmail.com>
Link: https://patch.msgid.link/20260222095536.17371-1-mr.navi8680@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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PCITEST_DOORBELL may return -EOPNOTSUPP when the endpoint does not
advertise CAP_DYNAMIC_INBOUND_MAPPING.
Treat this like other optional capabilities and skip the doorbell test
instead of reporting a failure.
Suggested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Koichiro Den <den@valinux.co.jp>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Link: https://patch.msgid.link/20260215150334.3391943-4-den@valinux.co.jp
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opaque devices
Verify Wacom devices set INPUT_PROP_DIRECT on display devices and
INPUT_PROP_POINTER on opaque devices. Verify INPUT_PROP_POINTER
is not set on display devices and INPUT_PROP_DIRECT is not set
on opaque devices.
Moved test_prop_pointer into TestOpaqueTablet. Created a
DirectTabletTest mixin class for test_prop_direct that can be
inherited by display tablet test classes.Used DirectTabletTest
for TestDTH2452Tablet case.
Signed-off-by: Alex Tran <alex.t.tran@gmail.com>
Tested-by: Erin Skomra <erin.skomra@wacom.com>
Reviewed-by: Erin Skomra <erin.skomra@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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strcpy() does not perform bounds checking and is considered deprecated
[1]. Replace strcpy() calls with strscpy() defined in bpf_util.h.
[1] https://docs.kernel.org/process/deprecated.html#strcpy
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-3-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Replace bpf_strlcpy() in bpf_util.h with a sized_strscpy(), which is a
simplified sized_strscpy() from the kernel (lib/string.c [1]). It:
* takes a count (destination size) parameter
* guarantees NULL-termination
* returns the number of characters copied or -E2BIG
Re-define strscpy macro similar to in-kernel implementation [2]: allow
the count parameter to be optional.
Add #ifdef-s to tools/include/linux/args.h, as they may be defined in
other system headers (for example, __CONCAT in sys/cdefs.h).
Fixup the single existing bpf_strlcpy() call in cgroup_helpers.c
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/lib/string.c?h=v6.19#n113
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/linux/string.h?h=v6.19#n91
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260223190736.649171-2-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Change the license of task local data mini library to LGPL-2.1 or
BSD-2-Clause to allow it being in a wider range of projects.
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Link: https://lore.kernel.org/r/20260219225849.2426421-1-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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As arm64 JIT now supports instruction array, make sure
all relevant tests run on this architecture.
Summary: 1/9 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Abhishek Dubey <adubey@linux.ibm.com>
Acked-by: Anton Protopopov <a.s.protopopov@gmail.com>
Link: https://lore.kernel.org/r/20260223203511.118475-1-adubey@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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and kptr fields.
Allow bpf_kptr_xchg to directly operate on pointers marked with
NON_OWN_REF | MEM_RCU.
In the example demonstrated in this patch, as long as "struct
bpf_refcount ref" exists, the __kptr pointer is guaranteed to
carry the MEM_RCU flag. The ref member itself does not need to
be explicitly used.
Signed-off-by: Kaitao Cheng <chengkaitao@kylinos.cn>
Link: https://lore.kernel.org/r/20260214124042.62229-6-pilgrimtao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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1. Allow using bpf_kptr_xchg while holding a lock.
2. When the rb_node contains a __kptr pointer, we do not need to
perform a remove-read-add operation.
This patch implements the following workflow:
1. Construct a rbtree with 16 elements.
2. Traverse the rbtree, locate the kptr pointer in the target node,
and read the content pointed to by the pointer.
3. Remove all nodes from the rbtree.
Signed-off-by: Kaitao Cheng <chengkaitao@kylinos.cn>
Signed-off-by: Feng Yang <yangfeng@kylinos.cn>
Link: https://lore.kernel.org/r/20260214124042.62229-4-pilgrimtao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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commit 81c734dae203 ("ip6_tunnel: use skb_vlan_inet_prepare() in
__ip6_tnl_rcv()") was fine in and of itself, but its backport to 6.12
(and 6.6) broke IPv4-in-IPv6 tunneling, see [1]. This adds a self-test
for basic IPv4-in-IPv6 and IPv6-in-IPv6 functionality.
[1]: https://lore.kernel.org/all/CAA2RiuSnH_2xc+-W6EnFEG00XjS-dszMq61JEvRjcGS31CBw=g@mail.gmail.com/
Signed-off-by: Linus Heckemann <git@sphalerite.org>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Ricardo B. Marlière <rbm@suse.com>
Tested-by: Ricardo B. Marlière <rbm@suse.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260221114806.1231666-1-git@sphalerite.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The cpuset_handle_hotplug() may need to invoke housekeeping_update(),
for instance, when an isolated partition is invalidated because its
last active CPU has been put offline.
As we are going to enable dynamic update to the nozh_full housekeeping
cpumask (HK_TYPE_KERNEL_NOISE) soon with the help of CPU hotplug,
allowing the CPU hotplug path to call into housekeeping_update() directly
from update_isolation_cpumasks() will likely cause deadlock. So we
have to defer any call to housekeeping_update() after the CPU hotplug
operation has finished. This is now done via the workqueue where
the update_hk_sched_domains() function will be invoked via the
hk_sd_workfn().
An concurrent cpuset control file write may have executed the required
update_hk_sched_domains() function before the work function is called. So
the work function call may become a no-op when it is invoked.
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The "S+" command is used in the test matrix to enable the cpuset
controller. However this can be done automatically and we never use the
"S-" command to disable cpuset controller. Simplify the test matrix and
reduce clutter by removing the command and doing that automatically.
There is no functional change to the test cases.
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Add a new kselftest to validate that the new ops.dequeue() semantics
work correctly for all task lifecycle scenarios, including the
distinction between terminal DSQs (where BPF scheduler is done with the
task), user DSQs (where BPF scheduler manages the task lifecycle) and
BPF data structures, regardless of which event performs the dispatch.
The test validates the following scenarios:
- From ops.select_cpu():
- scenario 0 (local DSQ): tasks dispatched to the local DSQ bypass
the BPF scheduler entirely; they never enter BPF custody, so
ops.dequeue() is not called,
- scenario 1 (global DSQ): tasks dispatched to SCX_DSQ_GLOBAL also
bypass the BPF scheduler, like the local DSQ; ops.dequeue() is
not called,
- scenario 2 (user DSQ): tasks dispatched to user DSQs from
ops.select_cpu(): tasks enter BPF scheduler's custody with full
enqueue/dequeue lifecycle tracking and state machine validation,
expects 1:1 enqueue/dequeue pairing,
- From ops.enqueue():
- scenario 3 (local DSQ): same behavior as scenario 0,
- scenario 4 (global DSQ): same behavior as scenario 1,
- scenario 5 (user DSQ): same behavior as scenario 2,
- scenario 6 (BPF internal queue): tasks are stored in a BPF queue
from ops.enqueue() and consumed from ops.dispatch(); similarly to
scenario 5, tasks enter BPF scheduler's custody with full
lifecycle tracking and 1:1 enqueue/dequeue validation.
This verifies that:
- terminal DSQ dispatch (local, global) don't trigger ops.dequeue(),
- tasks dispatched to user DSQs, either from ops.select_cpu() or
ops.enqueue(), enter BPF scheduler's custody and have exact 1:1
enqueue/dequeue pairing,
- tasks stored to internal BPF data structures from ops.enqueue() enter
BPF scheduler's custody and have exact 1:1 enqueue/dequeue pairing,
- dispatch dequeues have no flags (normal workflow),
- property change dequeues have the %SCX_DEQ_SCHED_CHANGE flag set,
- no duplicate enqueues or invalid state transitions are happening.
Cc: Tejun Heo <tj@kernel.org>
Cc: Emil Tsalapatis <emil@etsalapatis.com>
Cc: Kuba Piecuch <jpiecuch@google.com>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Currently, ops.dequeue() is only invoked when the sched_ext core knows
that a task resides in BPF-managed data structures, which causes it to
miss scheduling property change events. In addition, ops.dequeue()
callbacks are completely skipped when tasks are dispatched to non-local
DSQs from ops.select_cpu(). As a result, BPF schedulers cannot reliably
track task state.
Fix this by guaranteeing that each task entering the BPF scheduler's
custody triggers exactly one ops.dequeue() call when it leaves that
custody, whether the exit is due to a dispatch (regular or via a core
scheduling pick) or to a scheduling property change (e.g.
sched_setaffinity(), sched_setscheduler(), set_user_nice(), NUMA
balancing, etc.).
BPF scheduler custody concept: a task is considered to be in the BPF
scheduler's custody when the scheduler is responsible for managing its
lifecycle. This includes tasks dispatched to user-created DSQs or stored
in the BPF scheduler's internal data structures from ops.enqueue().
Custody ends when the task is dispatched to a terminal DSQ (such as the
local DSQ or %SCX_DSQ_GLOBAL), selected by core scheduling, or removed
due to a property change.
Tasks directly dispatched to terminal DSQs bypass the BPF scheduler
entirely and are never in its custody. Terminal DSQs include:
- Local DSQs (%SCX_DSQ_LOCAL or %SCX_DSQ_LOCAL_ON): per-CPU queues
where tasks go directly to execution.
- Global DSQ (%SCX_DSQ_GLOBAL): the built-in fallback queue where the
BPF scheduler is considered "done" with the task.
As a result, ops.dequeue() is not invoked for tasks directly dispatched
to terminal DSQs.
To identify dequeues triggered by scheduling property changes, introduce
the new ops.dequeue() flag %SCX_DEQ_SCHED_CHANGE: when this flag is set,
the dequeue was caused by a scheduling property change.
New ops.dequeue() semantics:
- ops.dequeue() is invoked exactly once when the task leaves the BPF
scheduler's custody, in one of the following cases:
a) regular dispatch: a task dispatched to a user DSQ or stored in
internal BPF data structures is moved to a terminal DSQ
(ops.dequeue() called without any special flags set),
b) core scheduling dispatch: core-sched picks task before dispatch
(ops.dequeue() called with %SCX_DEQ_CORE_SCHED_EXEC flag set),
c) property change: task properties modified before dispatch,
(ops.dequeue() called with %SCX_DEQ_SCHED_CHANGE flag set).
This allows BPF schedulers to:
- reliably track task ownership and lifecycle,
- maintain accurate accounting of managed tasks,
- update internal state when tasks change properties.
Cc: Tejun Heo <tj@kernel.org>
Cc: Emil Tsalapatis <emil@etsalapatis.com>
Cc: Kuba Piecuch <jpiecuch@google.com>
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The header <unistd.h> is included twice in rt_stall.c. Remove the
redundant inclusion to clean up the code.
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The '-f' option is defined in getopt() but not handled in the switch
statement or documented in the help text. Providing '-f' currently
triggers the default error path.
Remove it to sync the optstring with the actual implementation.
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The '-p' option is defined in getopt() but not handled in the switch
statement or documented in the help text. Providing '-p' currently
triggers the default error path.
Remove it to sync the optstring with the actual implementation.
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The read() call in run_test() triggers a warn_unused_result compiler
warning, which breaks the build under -Werror.
Check the return value of read() and exit the child process on failure to
satisfy the compiler and handle pipe read errors.
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The runner sets exit_req on SIGINT/SIGTERM but ignores it during the
main loop. This prevents users from cleanly interrupting a test run.
Check exit_req each iteration to safely break out on exit signals.
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Acked-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Cross-merge trees after 7.0-rc1.
No conflicts.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Pass '-Zunstable-options' flag required by the future Rust 1.95.0
- Fix 'objtool' warning for Rust 1.84.0
'kernel' crate:
- 'irq' module: add missing bound detected by the future Rust 1.95.0
- 'list' module: add missing 'unsafe' blocks and placeholder safety
comments to macros (an issue for future callers within the crate)
'pin-init' crate:
- Clean Clippy warning that changed behavior in the future Rust
1.95.0"
* tag 'rust-fixes-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
rust: list: Add unsafe blocks for container_of and safety comments
rust: pin-init: replace clippy `expect` with `allow`
rust: irq: add `'static` bounds to irq callbacks
objtool/rust: add one more `noreturn` Rust function
rust: kbuild: pass `-Zunstable-options` for Rust 1.95.0
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git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Arnaldo Carvalho de Melo:
- Introduce 'perf sched stats' tool with record/report/diff workflows
using schedstat counters
- Add a faster libdw based addr2line implementation and allow selecting
it or its alternatives via 'perf config addr2line.style='
- Data-type profiling fixes and improvements including the ability to
select fields using 'perf report''s -F/-fields, e.g.:
'perf report --fields overhead,type'
- Add 'perf test' regression tests for Data-type profiling with C and
Rust workloads
- Fix srcline printing with inlines in callchains, make sure this has
coverage in 'perf test'
- Fix printing of leaf IP in LBR callchains
- Fix display of metrics without sufficient permission in 'perf stat'
- Print all machines in 'perf kvm report -vvv', not just the host
- Switch from SHA-1 to BLAKE2s for build ID generation, remove SHA-1
code
- Fix 'perf report's histogram entry collapsing with '-F' option
- Use system's cacheline size instead of a hardcoded value in 'perf
report'
- Allow filtering conversion by time range in 'perf data'
- Cover conversion to CTF using 'perf data' in 'perf test'
- Address newer glibc const-correctness (-Werror=discarded-qualifiers)
issues
- Fixes and improvements for ARM's CoreSight support, simplify ARM SPE
event config in 'perf mem', update docs for 'perf c2c' including the
ARM events it can be used with
- Build support for generating metrics from arch specific python
script, add extra AMD, Intel, ARM64 metrics using it
- Add AMD Zen 6 events and metrics
- Add JSON file with OpenHW Risc-V CVA6 hardware counters
- Add 'perf kvm' stats live testing
- Add more 'perf stat' tests to 'perf test'
- Fix segfault in `perf lock contention -b/--use-bpf`
- Fix various 'perf test' cases for s390
- Build system cleanups, bump minimum shellcheck version to 0.7.2
- Support building the capstone based annotation routines as a plugin
- Allow passing extra Clang flags via EXTRA_BPF_FLAGS
* tag 'perf-tools-for-v7.0-1-2026-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (255 commits)
perf test script: Add python script testing support
perf test script: Add perl script testing support
perf script: Allow the generated script to be a path
perf test: perf data --to-ctf testing
perf test: Test pipe mode with data conversion --to-json
perf json: Pipe mode --to-ctf support
perf json: Pipe mode --to-json support
perf check: Add libbabeltrace to the listed features
perf build: Allow passing extra Clang flags via EXTRA_BPF_FLAGS
perf test data_type_profiling.sh: Skip just the Rust tests if code_with_type workload is missing
tools build: Fix feature test for rust compiler
perf libunwind: Fix calls to thread__e_machine()
perf stat: Add no-affinity flag
perf evlist: Reduce affinity use and move into iterator, fix no affinity
perf evlist: Missing TPEBS close in evlist__close()
perf evlist: Special map propagation for tool events that read on 1 CPU
perf stat-shadow: In prepare_metric fix guard on reading NULL perf_stat_evsel
Revert "perf tool_pmu: More accurately set the cpus for tool events"
tools build: Emit dependencies file for test-rust.bin
tools build: Make test-rust.bin be removed by the 'clean' target
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fixes from Tejun Heo:
- Various bug fixes for the example schedulers and selftests
* tag 'sched_ext-for-7.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
tools/sched_ext: fix getopt not re-parsed on restart
tools/sched_ext: scx_userland: fix data races on shared counters
tools/sched_ext: scx_pair: fix stride == 0 crash on single-CPU systems
tools/sched_ext: scx_central: fix CPU_SET and skeleton leak on early exit
tools/sched_ext: scx_userland: fix stale data on restart
tools/sched_ext: scx_flatcg: fix potential stack overflow from VLA in fcg_read_stats
selftests/sched_ext: Fix rt_stall flaky failure
tools/sched_ext: scx_userland: fix restart and stats thread lifecycle bugs
tools/sched_ext: scx_central: fix sched_setaffinity() call with the set size
tools/sched_ext: scx_flatcg: zero-initialize stats counter array
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After goto restart, optind retains its advanced position from the
previous getopt loop, causing getopt() to immediately return -1.
This silently drops all command-line options on the restarted skeleton.
Reset optind to 1 at the restart label so options are re-parsed.
Affected schedulers: scx_simple, scx_central, scx_flatcg, scx_pair,
scx_sdt, scx_cpu0.
Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The stats thread reads nr_vruntime_enqueues, nr_vruntime_dispatches,
nr_vruntime_failed, and nr_curr_enqueued concurrently with the main
thread writing them, with no synchronization.
Use __atomic builtins with relaxed ordering for all accesses to these
counters to eliminate the data races.
Only display accuracy is affected, not scheduling correctness.
Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Add a test to verify that RSS contexts persist across interface
down/up along with their associated Ntuple filters. Another test
that creates contexts/rules keeping interface down and test their
persistence is also added.
Tested on bnxt_en:
TAP version 13
1..1
# timeout set to 0
# selftests: drivers/net/hw: rss_ctx.py
# TAP version 13
# 1..2
# ok 1 rss_ctx.test_rss_context_persist_create_and_ifdown
# ok 2 rss_ctx.test_rss_context_persist_ifdown_and_create # SKIP Create context not supported with interface down
# # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:1 error:0
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20260219185313.2682148-4-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Some architectures require mappings to be aligned to the system page size.
The build_id selftest currently uses a smaller alignment, which can result
in madvise operations executing on a different page than intended.
Increase the mapping alignment to 64K so the buffer is page-aligned on
all supported architectures.
Signed-off-by: Gregory Bell <grbell@redhat.com>
Link: https://lore.kernel.org/r/93543253b32d1cb178ab6e31e4291e387ba1c372.1771338492.git.grbell@redhat.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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The build_id selftest occasionally fails because MADV_PAGEOUT
does not guarantee the immediate eviction of the page. The test
assumes eviction happens and proceeds without verifying
that the page was actually reclaimed, leading to false test
failures.
Fix the test by retrying the page-out sequence until eviction
is successful, instead of relying on a single MADV_PAGEOUT attempt.
Signed-off-by: Gregory Bell <grbell@redhat.com>
Link: https://lore.kernel.org/r/038bd27c69dd3a16958894fcb19e4fb6fbfe317e.1771338492.git.grbell@redhat.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Cross-merge BPF and other fixes after downstream PR.
No conflicts.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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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.
Current release - new code bugs:
- net: fix backlog_unlock_irq_restore() vs CONFIG_PREEMPT_RT
- eth: mlx5e: XSK, Fix unintended ICOSQ change
- phy_port: correctly recompute the port's linkmodes
- vsock: prevent child netns mode switch from local to global
- couple of kconfig fixes for new symbols
Previous releases - regressions:
- nfc: nci: fix false-positive parameter validation for packet data
- net: do not delay zero-copy skbs in skb_attempt_defer_free()
Previous releases - always broken:
- mctp: ensure our nlmsg responses to user space are zero-initialised
- ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data()
- fixes for ICMP rate limiting
Misc:
- intel: fix PCI device ID conflict between i40e and ipw2200"
* tag 'net-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (85 commits)
net: nfc: nci: Fix parameter validation for packet data
net/mlx5e: Use unsigned for mlx5e_get_max_num_channels
net/mlx5e: Fix deadlocks between devlink and netdev instance locks
net/mlx5e: MACsec, add ASO poll loop in macsec_aso_set_arm_event
net/mlx5: Fix misidentification of write combining CQE during poll loop
net/mlx5e: Fix misidentification of ASO CQE during poll loop
net/mlx5: Fix multiport device check over light SFs
bonding: alb: fix UAF in rlb_arp_recv during bond up/down
bnge: fix reserving resources from FW
eth: fbnic: Advertise supported XDP features.
rds: tcp: fix uninit-value in __inet_bind
net/rds: Fix NULL pointer dereference in rds_tcp_accept_one
octeontx2-af: Fix default entries mcam entry action
net/mlx5e: XSK, Fix unintended ICOSQ change
ipv6: icmp: icmpv6_xrlim_allow() optimization if net.ipv6.icmp.ratelimit is zero
ipv4: icmp: icmpv4_xrlim_allow() optimization if net.ipv4.icmp_ratelimit is zero
ipv6: icmp: remove obsolete code in icmpv6_xrlim_allow()
inet: move icmp_global_{credit,stamp} to a separate cache line
icmp: prevent possible overflow in icmp_global_allow()
selftests/net: packetdrill: add ipv4-mapped-ipv6 tests
...
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Pull bpf fixes from Alexei Starovoitov:
- Fix invalid write loop logic in libbpf's bpf_linker__add_buf() (Amery
Hung)
- Fix a potential use-after-free of BTF object (Anton Protopopov)
- Add feature detection to libbpf and avoid moving arena global
variables on older kernels (Emil Tsalapatis)
- Remove extern declaration of bpf_stream_vprintk() from libbpf headers
(Ihor Solodrai)
- Fix truncated netlink dumps in bpftool (Jakub Kicinski)
- Fix map_kptr grace period wait in bpf selftests (Kumar Kartikeya
Dwivedi)
- Remove hexdump dependency while building bpf selftests (Matthieu
Baerts)
- Complete fsession support in BPF trampolines on riscv (Menglong Dong)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
selftests/bpf: Remove hexdump dependency
libbpf: Remove extern declaration of bpf_stream_vprintk()
selftests/bpf: Use vmlinux.h in test_xdp_meta
bpftool: Fix truncated netlink dumps
libbpf: Delay feature gate check until object prepare time
libbpf: Do not use PROG_TYPE_TRACEPOINT program for feature gating
bpf: Add a map/btf from a fd array more consistently
selftests/bpf: Fix map_kptr grace period wait
selftests/bpf: enable fsession_test on riscv64
selftests/bpf: Adjust selftest due to function rename
bpf, riscv: add fsession support for trampolines
bpf: Fix a potential use-after-free of BTF object
bpf, riscv: introduce emit_store_stack_imm64() for trampoline
libbpf: Fix invalid write loop logic in bpf_linker__add_buf()
libbpf: Add gating for arena globals relocation feature
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more non-MM updates from Andrew Morton:
- "two fixes in kho_populate()" fixes a couple of not-major issues in
the kexec handover code (Ran Xiaokai)
- misc singletons
* tag 'mm-nonmm-stable-2026-02-18-19-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
lib/group_cpus: handle const qualifier from clusters allocation type
kho: remove unnecessary WARN_ON(err) in kho_populate()
kho: fix missing early_memunmap() call in kho_populate()
scripts/gdb: implement x86_page_ops in mm.py
objpool: fix the overestimation of object pooling metadata size
selftests/memfd: use IPC semaphore instead of SIGSTOP/SIGCONT
delayacct: fix build regression on accounting tool
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
- "mm/vmscan: fix demotion targets checks in reclaim/demotion" fixes a
couple of issues in the demotion code - pages were failed demotion
and were finding themselves demoted into disallowed nodes (Bing Jiao)
- "Remove XA_ZERO from error recovery of dup_mmap()" fixes a rare
mapledtree race and performs a number of cleanups (Liam Howlett)
- "mm: add bitmap VMA flag helpers and convert all mmap_prepare to use
them" implements a lot of cleanups following on from the conversion
of the VMA flags into a bitmap (Lorenzo Stoakes)
- "support batch checking of references and unmapping for large folios"
implements batching to greatly improve the performance of reclaiming
clean file-backed large folios (Baolin Wang)
- "selftests/mm: add memory failure selftests" does as claimed (Miaohe
Lin)
* tag 'mm-stable-2026-02-18-19-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (36 commits)
mm/page_alloc: clear page->private in free_pages_prepare()
selftests/mm: add memory failure dirty pagecache test
selftests/mm: add memory failure clean pagecache test
selftests/mm: add memory failure anonymous page test
mm: rmap: support batched unmapping for file large folios
arm64: mm: implement the architecture-specific clear_flush_young_ptes()
arm64: mm: support batch clearing of the young flag for large folios
arm64: mm: factor out the address and ptep alignment into a new helper
mm: rmap: support batched checks of the references for large folios
tools/testing/vma: add VMA userland tests for VMA flag functions
tools/testing/vma: separate out vma_internal.h into logical headers
tools/testing/vma: separate VMA userland tests into separate files
mm: make vm_area_desc utilise vma_flags_t only
mm: update all remaining mmap_prepare users to use vma_flags_t
mm: update shmem_[kernel]_file_*() functions to use vma_flags_t
mm: update secretmem to use VMA flags on mmap_prepare
mm: update hugetlbfs to use VMA flags on mmap_prepare
mm: add basic VMA flag operation helper functions
tools: bitmap: add missing bitmap_[subset(), andnot()]
mm: add mk_vma_flags() bitmap flag macro helper
...
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Add ipv4-mapped-ipv6 case to ksft_runner.sh before
an upcoming TCP fix in this area.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260217142924.1853498-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The verification signature header generation requires converting a
binary certificate to a C array. Previously this only worked with xxd,
and a switch to hexdump has been done in commit b640d556a2b3
("selftests/bpf: Remove xxd util dependency").
hexdump is a more common utility program, yet it might not be installed
by default. When it is not installed, BPF selftests build without
errors, but tests_progs is unusable: it exits with the 255 code and
without any error messages. When manually reproducing the issue, it is
not too hard to find out that the generated verification_cert.h file is
incorrect, but that's time consuming. When digging the BPF selftests
build logs, this line can be seen amongst thousands others, but ignored:
/bin/sh: 2: hexdump: not found
Here, od is used instead of hexdump. od is coming from the coreutils
package, and this new od command produces the same output when using od
from GNU coreutils, uutils, and even busybox. This is more portable, and
it produces a similar results to what was done before with hexdump:
there is an extra comma at the end instead of trailing whitespaces,
but the C code is not impacted.
Fixes: b640d556a2b3 ("selftests/bpf: Remove xxd util dependency")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Tested-by: Alan Maguire <alan.maguire@oracle.com>
Link: https://lore.kernel.org/r/20260218-bpf-sft-hexdump-od-v2-1-2f9b3ee5ab86@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild fixes from Nathan Chancellor:
- Ensure tools/objtool is cleaned by 'make clean' and 'make mrproper'
- Fix test program for CONFIG_CC_CAN_LINK to avoid a warning, which is
made fatal by -Werror
- Drop explicit LZMA parallel compression in scripts/make_fit.py
- Several fixes for commit 62089b804895 ("kbuild: rpm-pkg: Generate
debuginfo package manually")
* tag 'kbuild-fixes-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
kbuild: rpm-pkg: Disable automatic requires for manual debuginfo package
kbuild: rpm-pkg: Fix manual debuginfo generation when using .src.rpm
kernel: rpm-pkg: Restore find-debuginfo.sh approach to -debuginfo package
kbuild: rpm-pkg: Restrict manual debug package creation
scripts/make_fit.py: Drop explicit LZMA parallel compression
kbuild: Fix CC_CAN_LINK detection
kbuild: Add objtool to top-level clean target
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An issue was reported that building BPF program which includes both
vmlinux.h and bpf_helpers.h from libbpf fails due to conflicting
declarations of bpf_stream_vprintk().
Remove the extern declaration from bpf_helpers.h to address this.
In order to use bpf_stream_printk() macro, BPF programs are expected
to either include vmlinux.h of the kernel they are targeting, or add
their own extern declaration.
Reported-by: Luca Boccassi <luca.boccassi@gmail.com>
Closes: https://github.com/libbpf/libbpf/issues/947
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260218215651.2057673-3-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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