| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
Problem: currently, if you remove something from your kunitconfig,
kunit.py will not regenerate the .config file.
The same thing happens if you did --kunitconfig_add=CONFIG_KASAN=y [1]
and then ran again without it. Your new run will still have KASAN.
The reason is that kunit.py won't regenerate the .config file if it's a
superset of the kunitconfig. This speeds it up a bit for iterating.
This patch adds an additional check that forces kunit.py to regenerate
the .config file if the current kunitconfig doesn't match the previous
one.
What this means:
* deleting entries from .kunitconfig works as one would expect
* dropping a --kunitconfig_add also triggers a rebuild
* you can still edit .config directly to turn on new options
We implement this by creating a `last_used_kunitconfig` file in the
build directory (so .kunit, by default) after we generate the .config.
When comparing the kconfigs, we compare python sets, so duplicates and
permutations don't trip us up.
The majority of this patch is adding unit tests for the existing logic
and for the new case where `last_used_kunitconfig` differs.
[1] https://lore.kernel.org/linux-kselftest/[email protected]/
Signed-off-by: Daniel Latypov <[email protected]>
Reviewed-by: David Gow <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
The current error message is precise, but not very clear if you don't
already know what it's talking about, e.g.
> $ make ARCH=um olddefconfig O=.kunit
> ERROR:root:Provided Kconfig is not contained in validated .config. Following fields found in kunitconfig, but not in .config: CONFIG_DRM=y
Try to reword the error message so that it's
* your missing options usually have unsatisified dependencies
* if you're on UML, that might be the cause (it is, in this example)
Signed-off-by: Daniel Latypov <[email protected]>
Reviewed-by: David Gow <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
E.g. run tests but with KASAN
$ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kconfig_add=CONFIG_KASAN=y
This also works with --kunitconfig
$ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kunitconfig=fs/ext4 --kconfig_add=CONFIG_KASAN=y
This flag is inspired by TuxMake's --kconfig-add, see
https://gitlab.com/Linaro/tuxmake#examples.
Our version just uses "_" as the delimiter for consistency with
pre-existing flags like --build_dir, --make_options, --kernel_args, etc.
Note: this does make it easier to run into a pre-existing edge case:
$ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kconfig_add=CONFIG_KASAN=y
$ ./tools/testing/kunit/kunit.py run --arch=x86_64
This second invocation ^ still has KASAN enabled!
kunit.py won't call olddefconfig if our current .config is already a
superset of the provided kunitconfig.
Signed-off-by: Daniel Latypov <[email protected]>
Reviewed-by: David Gow <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
read_from_file() clears its `self` Kconfig object and parses a config
file.
It is a way to construct Kconfig objects more so than an operation on
Kconfig objects. This is reflected in the fact its only ever used as:
kconfig = kunit_config.Kconfig()
kconfig.read_from_file(path)
So clean this up and simplify callers by replacing it with
kconfig = kunit_config.parse_file(path)
Do the same thing for the related parse_from_string() function as well.
Signed-off-by: Daniel Latypov <[email protected]>
Reviewed-by: David Gow <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
With the parser rework [1] and run_kernel() rework [2], this allows the
parser to print out test results incrementally.
Currently, that's held up by the fact that the LineStream eagerly
pre-fetches the next line when you call pop().
This blocks parse_test_result() from returning until the line *after*
the "ok 1 - test name" line is also printed.
One can see this with the following example:
$ (echo -e 'TAP version 14\n1..3\nok 1 - fake test'; sleep 2; echo -e 'ok 2 - fake test 2'; sleep 3; echo -e 'ok 3 - fake test 3') | ./tools/testing/kunit/kunit.py parse
Before this patch [1]: there's a pause before 'fake test' is printed.
After this patch: 'fake test' is printed out immediately.
This patch also adds
* a unit test to verify LineStream's behavior directly
* a test case to ensure that it's lazily calling the generator
* an explicit exception for when users go beyond EOF
[1] https://lore.kernel.org/linux-kselftest/[email protected]/
[2] https://lore.kernel.org/linux-kselftest/[email protected]/
Signed-off-by: Daniel Latypov <[email protected]>
Reviewed-by: David Gow <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
It's possible for a test to have a subtest header, but zero valid
subtests. We used to error on this if the test plan had no subtests
listed, but it's possible to have subtests without a test plan (indeed,
this is how parameterised tests work).
Tests with 0 subtests now have the result NO_TESTS, and will report an
error (which does not halt test execution, but is printed in a scary red
colour and is noted in the results summary).
Signed-off-by: David Gow <[email protected]>
Reviewed-by: Daniel Latypov <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
The (K)TAP spec encourages test output to begin with a 'test plan': a
count of the number of tests being run of the form:
1..n
However, some test suites might not know the number of subtests in
advance (for example, KUnit's parameterised tests use a generator
function). In this case, it's not possible to print the test plan in
advance.
kunit_tool already parses test output which doesn't contain a plan, but
reports an error. Since we want to use nested subtests with KUnit
paramterised tests, remove this error.
Signed-off-by: David Gow <[email protected]>
Reviewed-by: Daniel Latypov <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
This formalizes the checks KUnit maintainers have been running (or in
other cases: forgetting to run).
This script also runs them all in parallel to minimize friction (pytype
can be fairly slow, but not slower than running kunit.py).
Example output:
$ ./tools/testing/kunit/run_checks.py
Waiting on 4 checks (kunit_tool_test.py, kunit smoke test, pytype, mypy)...
kunit_tool_test.py: PASSED
mypy: PASSED
pytype: PASSED
kunit smoke test: PASSED
On failure or timeout (5 minutes), it'll dump out the stdout/stderr.
E.g. adding in a type-checking error:
mypy: FAILED
> kunit.py:54: error: Name 'nonexistent_function' is not defined
> Found 1 error in 1 file (checked 8 source files)
mypy and pytype are two Python type-checkers and must be installed.
This file treats them as optional and will mark them as SKIPPED if not
installed.
This tool also runs `kunit.py run --kunitconfig=lib/kunit` to run
KUnit's own KUnit tests and to verify KUnit kernel code and kunit.py
play nicely together.
It uses --build_dir=kunit_run_checks so as not to clobber the default
build_dir, which helps make it faster by reducing the need to rebuild,
esp. if you're been passing in --arch instead of using UML.
Signed-off-by: Daniel Latypov <[email protected]>
Reviewed-by: David Gow <[email protected]>
Reviewed-by: David Gow <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
Currently, KUnit will report SKIPPED tests as having failed if one uses
--json.
Add the missing if statement to set the appropriate status ("SKIP").
See https://api.kernelci.org/schema-test-case.html:
"status": {
"type": "string",
"description": "The status of the execution of this test case",
"enum": ["PASS", "FAIL", "SKIP", "ERROR"],
"default": "PASS"
},
with this, we now can properly produce all four of the statuses.
Fixes: 5acaf6031f53 ("kunit: tool: Support skipped tests in kunit_tool")
Signed-off-by: Daniel Latypov <[email protected]>
Reviewed-by: David Gow <[email protected]>
Reviewed-by: Brendan Higgins <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
|
|
Update complete_and_exit to call kthread_exit instead of do_exit.
Change the name to reflect this change in functionality. All of the
users of complete_and_exit are causing the current kthread to exit so
this change makes it clear what is happening.
Move the implementation of kthread_complete_and_exit from
kernel/exit.c to to kernel/kthread.c. As this function is kthread
specific it makes most sense to live with the kthread functions.
There are no functional change.
Signed-off-by: "Eric W. Biederman" <[email protected]>
|
|
Update module_put_and_exit to call kthread_exit instead of do_exit.
Change the name to reflect this change in functionality. All of the
users of module_put_and_exit are causing the current kthread to exit
so this change makes it clear what is happening. There is no
functional change.
Signed-off-by: "Eric W. Biederman" <[email protected]>
|
|
The way the per task_struct exit_code is used by kernel threads is not
quite compatible how it is used by userspace applications. The low
byte of the userspace exit_code value encodes the exit signal. While
kthreads just use the value as an int holding ordinary kernel function
exit status like -EPERM.
Add kthread_exit to clearly separate the two kinds of uses.
Signed-off-by: "Eric W. Biederman" <[email protected]>
|
|
There are two big uses of do_exit. The first is it's design use to be
the guts of the exit(2) system call. The second use is to terminate
a task after something catastrophic has happened like a NULL pointer
in kernel code.
Add a function make_task_dead that is initialy exactly the same as
do_exit to cover the cases where do_exit is called to handle
catastrophic failure. In time this can probably be reduced to just a
light wrapper around do_task_dead. For now keep it exactly the same so
that there will be no behavioral differences introducing this new
concept.
Replace all of the uses of do_exit that use it for catastraphic
task cleanup with make_task_dead to make it clear what the code
is doing.
As part of this rename rewind_stack_do_exit
rewind_stack_and_make_dead.
Signed-off-by: "Eric W. Biederman" <[email protected]>
|
|
Adding tests for get_func_[arg|ret|arg_cnt] helpers.
Using these helpers in fentry/fexit/fmod_ret programs.
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
Adding following helpers for tracing programs:
Get n-th argument of the traced function:
long bpf_get_func_arg(void *ctx, u32 n, u64 *value)
Get return value of the traced function:
long bpf_get_func_ret(void *ctx, u64 *value)
Get arguments count of the traced function:
long bpf_get_func_arg_cnt(void *ctx)
The trampoline now stores number of arguments on ctx-8
address, so it's easy to verify argument index and find
return value argument's position.
Moving function ip address on the trampoline stack behind
the number of functions arguments, so it's now stored on
ctx-16 address if it's needed.
All helpers above are inlined by verifier.
Also bit unrelated small change - using newly added function
bpf_prog_has_trampoline in check_get_func_ip.
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
Adding verifier test for accessing int pointer argument in
tracing programs.
The test program loads 2nd argument of bpf_modify_return_test
function which is int pointer and checks that verifier allows
that.
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
The recent GRE selftests defined NUM_NETIFS=10. If the users copy
forwarding.config.sample to forwarding.config directly, they will get
error "Command line is not complete" when run the GRE tests, because
create_netif_veth() failed with no interface name defined.
Fix it by extending the NETIFS with p9 and p10.
Fixes: 2800f2485417 ("selftests: forwarding: Test multipath hashing on inner IP pkts for GRE tunnel")
Signed-off-by: Hangbin Liu <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
The test is currently run on a single host with private addresses,
either over veth or by setting a nic in loopback mode with macvlan.
Support running between two real devices. Allow overriding addresses.
Also cut timeout to fail faster on error and explicitly log success.
Signed-off-by: Willem de Bruijn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Tiny fix. Option -u ("use udp") does not take an argument.
It can cause the next argument to silently be ignored.
Fixes: 5ebfb4cc3048 ("selftests/net: toeplitz test")
Signed-off-by: Willem de Bruijn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
During linking, type IDs in the resulting linked BPF object file can
change, and so ldimm64 instructions corresponding to
BPF_CORE_TYPE_ID_TARGET and BPF_CORE_TYPE_ID_LOCAL CO-RE relos can get
their imm value out of sync with actual CO-RE relocation information
that's updated by BPF linker properly during linking process.
We could teach BPF linker to adjust such instructions, but it feels
a bit too much for linker to re-implement good chunk of
bpf_core_patch_insns logic just for this. This is a redundant safety
check for TYPE_ID relocations, as the real validation is in matching
CO-RE specs, so if that works fine, it's very unlikely that there is
something wrong with the instruction itself.
So, instead, teach libbpf (and kernel) to ignore insn->imm for
BPF_CORE_TYPE_ID_TARGET and BPF_CORE_TYPE_ID_LOCAL relos.
Signed-off-by: Andrii Nakryiko <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
bpf_create_map_xattr() call was reintroduced after merging bpf tree into
bpf-next tree. Convert the last instance into bpf_map_create() call.
Signed-off-by: Andrii Nakryiko <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
IPv6 allows binding a socket to a device then binding to an address
not on the device (__inet6_bind -> ipv6_chk_addr with strict flag
not set). Update the bind tests to reflect legacy behavior.
Fixes: 34d0302ab861 ("selftests: Add ipv6 address bind tests to fcnal-test")
Reported-by: Li Zhijian <[email protected]>
Signed-off-by: David Ahern <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Commit referenced below added negative socket bind tests for VRF. The
socket binds should fail since the address to bind to is in a VRF yet
the socket is not bound to the VRF or a device within it. Update the
expected return code to check for 1 (bind failure) so the test passes
when the bind fails as expected. Add a 'show_hint' comment to explain
why the bind is expected to fail.
Fixes: 75b2b2b3db4c ("selftests: Add ipv4 address bind tests to fcnal-test")
Reported-by: Li Zhijian <[email protected]>
Signed-off-by: David Ahern <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
Commit referenced below added configuration in the default VRF that
duplicates a VRF to check MD5 passwords are properly used and fail
when expected. That config should not be added all the time as it
can cause tests to pass that should not (by matching on default VRF
setup when it should not). Move the duplicate setup to a function
that is only called for the MD5 tests and add a cleanup function
to remove it after the MD5 tests.
Fixes: 5cad8bce26e0 ("fcnal-test: Add TCP MD5 tests for VRF")
Signed-off-by: David Ahern <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
If any sub-test in this icmp_redirect.sh is failing but not expected
to fail. The script will complain:
./icmp_redirect.sh: line 72: [: 1: unary operator expected
This is because when the sub-test is not expected to fail, we won't
pass any value for the xfail local variable in log_test() and thus
it's empty. Fix this by passing 0 as the 4th variable to log_test()
for non-xfail cases.
v2: added fixes tag
Fixes: 0a36a75c6818 ("selftests: icmp_redirect: support expected failures")
Signed-off-by: Po-Hsu Lin <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
|
|
As mentined by Takashi Sakamoto, the system-wide alsa-lib configuration
may override the standard device declarations. This patch use the private
alsa-lib configuration to set the predictable environment.
Signed-off-by: Jaroslav Kysela <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[Restructure version test to keep the preprocessor happy -- broonie]
Reviewed-by: Shuah Khan <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
|
|
The volatile attribute of control element means that the hardware can
voluntarily change the state of control element independent of any
operation by software. ALSA control core necessarily sends notification
to userspace subscribers for any change from userspace application, while
it doesn't for the hardware's voluntary change.
This commit adds optimization for the attribute. Even if read value is
different from written value, the test reports success as long as the
target control element has the attribute. On the other hand, the
difference is itself reported for developers' convenience.
Signed-off-by: Takashi Sakamoto <[email protected]>
Link: https://lore.kernel.org/r/Ya7TAHdMe9i41bsC@workstation
[Fix comment style as suggested by Shuah -- broonie]
Reviewed-by: Shuah Khan <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
|
|
Add a basic test for the mixer control interface. For every control on
every sound card in the system it checks that it can read and write the
default value where the control supports that and for writeable controls
attempts to write all valid values, restoring the default values after
each test to minimise disruption for users.
There are quite a few areas for improvement - currently no coverage of the
generation of notifications, several of the control types don't have any
coverage for the values and we don't have any testing of error handling
when we attempt to write out of range values - but this provides some basic
coverage.
This is added as a kselftest since unlike other ALSA test programs it does
not require either physical setup of the device or interactive monitoring
by users and kselftest is one of the test suites that is frequently run by
people doing general automated testing so should increase coverage. It is
written in terms of alsa-lib since tinyalsa is not generally packaged for
distributions which makes things harder for general users interested in
kselftest as a whole but it will be a barrier to people with Android.
Signed-off-by: Mark Brown <[email protected]>
Reviewed-by: Shuah Khan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
|
|
Four test cases are added:
(1) ensure the return value is expected
(2) ensure no const string size is rejected
(3) ensure writable target is rejected
(4) ensure no null-terminated target is rejected
Signed-off-by: Hou Tao <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
Add benchmark to compare the performance between home-made strncmp()
in bpf program and bpf_strncmp() helper. In summary, the performance
win of bpf_strncmp() under x86-64 is greater than 18% when the compared
string length is greater than 64, and is 179% when the length is 4095.
Under arm64 the performance win is even bigger: 33% when the length
is greater than 64 and 600% when the length is 4095.
The following is the details:
no-helper-X: use home-made strncmp() to compare X-sized string
helper-Y: use bpf_strncmp() to compare Y-sized string
Under x86-64:
no-helper-1 3.504 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-1 3.347 ± 0.001M/s (drops 0.000 ± 0.000M/s)
no-helper-8 3.357 ± 0.001M/s (drops 0.000 ± 0.000M/s)
helper-8 3.307 ± 0.001M/s (drops 0.000 ± 0.000M/s)
no-helper-32 3.064 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-32 3.253 ± 0.001M/s (drops 0.000 ± 0.000M/s)
no-helper-64 2.563 ± 0.001M/s (drops 0.000 ± 0.000M/s)
helper-64 3.040 ± 0.001M/s (drops 0.000 ± 0.000M/s)
no-helper-128 1.975 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-128 2.641 ± 0.000M/s (drops 0.000 ± 0.000M/s)
no-helper-512 0.759 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-512 1.574 ± 0.000M/s (drops 0.000 ± 0.000M/s)
no-helper-2048 0.329 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-2048 0.602 ± 0.000M/s (drops 0.000 ± 0.000M/s)
no-helper-4095 0.117 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-4095 0.327 ± 0.000M/s (drops 0.000 ± 0.000M/s)
Under arm64:
no-helper-1 2.806 ± 0.004M/s (drops 0.000 ± 0.000M/s)
helper-1 2.819 ± 0.002M/s (drops 0.000 ± 0.000M/s)
no-helper-8 2.797 ± 0.109M/s (drops 0.000 ± 0.000M/s)
helper-8 2.786 ± 0.025M/s (drops 0.000 ± 0.000M/s)
no-helper-32 2.399 ± 0.011M/s (drops 0.000 ± 0.000M/s)
helper-32 2.703 ± 0.002M/s (drops 0.000 ± 0.000M/s)
no-helper-64 2.020 ± 0.015M/s (drops 0.000 ± 0.000M/s)
helper-64 2.702 ± 0.073M/s (drops 0.000 ± 0.000M/s)
no-helper-128 1.604 ± 0.001M/s (drops 0.000 ± 0.000M/s)
helper-128 2.516 ± 0.002M/s (drops 0.000 ± 0.000M/s)
no-helper-512 0.699 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-512 2.106 ± 0.003M/s (drops 0.000 ± 0.000M/s)
no-helper-2048 0.215 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-2048 1.223 ± 0.003M/s (drops 0.000 ± 0.000M/s)
no-helper-4095 0.112 ± 0.000M/s (drops 0.000 ± 0.000M/s)
helper-4095 0.796 ± 0.000M/s (drops 0.000 ± 0.000M/s)
Signed-off-by: Hou Tao <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
Fix checkpatch error: "ERROR: Bad function definition - void foo()
should probably be void foo(void)". Most replacements are done by
the following command:
sed -i 's#\([a-z]\)()$#\1(void)#g' testing/selftests/bpf/benchs/*.c
Signed-off-by: Hou Tao <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
The helper compares two strings: one string is a null-terminated
read-only string, and another string has const max storage size
but doesn't need to be null-terminated. It can be used to compare
file name in tracing or LSM program.
Signed-off-by: Hou Tao <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
|
|
libbpf's obj->nr_programs includes static and global functions. That number
could be higher than the actual number of bpf programs going be loaded by
gen_loader. Passing larger nr_programs to bpf_gen__init() doesn't hurt. Those
exra stack slots will stay as zero. bpf_gen__finish() needs to check that
actual number of progs that gen_loader saw is less than or equal to
obj->nr_programs.
Fixes: ba05fd36b851 ("libbpf: Perform map fd cleanup for gen_loader in case of error")
Signed-off-by: Alexei Starovoitov <[email protected]>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Prevent out-of-bounds access to per sample registers.
- Fix NULL vs IS_ERR_OR_NULL() checking on the python binding.
- Intel PT fixes, half of those are one-liners:
- Fix some PGE (packet generation enable/control flow packets) usage.
- Fix sync state when a PSB (synchronization) packet is found.
- Fix intel_pt_fup_event() assumptions about setting state type.
- Fix state setting when receiving overflow (OVF) packet.
- Fix next 'err' value, walking trace.
- Fix missing 'instruction' events with 'q' option.
- Fix error timestamp setting on the decoder error path.
* tag 'perf-tools-fixes-for-v5.16-2021-12-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf python: Fix NULL vs IS_ERR_OR_NULL() checking
perf intel-pt: Fix error timestamp setting on the decoder error path
perf intel-pt: Fix missing 'instruction' events with 'q' option
perf intel-pt: Fix next 'err' value, walking trace
perf intel-pt: Fix state setting when receiving overflow (OVF) packet
perf intel-pt: Fix intel_pt_fup_event() assumptions about setting state type
perf intel-pt: Fix sync state when a PSB (synchronization) packet is found
perf intel-pt: Fix some PGE (packet generation enable/control flow packets) usage
perf tools: Prevent out-of-bounds access to registers
|
|
Merge misc fixes from Andrew Morton:
"21 patches.
Subsystems affected by this patch series: MAINTAINERS, mailmap, and mm
(mlock, pagecache, damon, slub, memcg, hugetlb, and pagecache)"
* emailed patches from Andrew Morton <[email protected]>: (21 commits)
mm: bdi: initialize bdi_min_ratio when bdi is unregistered
hugetlbfs: fix issue of preallocation of gigantic pages can't work
mm/memcg: relocate mod_objcg_mlstate(), get_obj_stock() and put_obj_stock()
mm/slub: fix endianness bug for alloc/free_traces attributes
selftests/damon: split test cases
selftests/damon: test debugfs file reads/writes with huge count
selftests/damon: test wrong DAMOS condition ranges input
selftests/damon: test DAMON enabling with empty target_ids case
selftests/damon: skip test if DAMON is running
mm/damon/vaddr-test: remove unnecessary variables
mm/damon/vaddr-test: split a test function having >1024 bytes frame size
mm/damon/vaddr: remove an unnecessary warning message
mm/damon/core: remove unnecessary error messages
mm/damon/dbgfs: remove an unnecessary error message
mm/damon/core: use better timer mechanisms selection threshold
mm/damon/core: fix fake load reports due to uninterruptible sleeps
timers: implement usleep_idle_range()
filemap: remove PageHWPoison check from next_uptodate_page()
mailmap: update email address for Guo Ren
MAINTAINERS: update kdump maintainers
...
|
|
The function trace_event__tp_format_id may return ERR_PTR(-ENOMEM). Use
IS_ERR_OR_NULL to check tp_format.
Signed-off-by: Miaoqian Lin <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Song Liu <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
An error timestamp shows the last known timestamp for the queue, but this
is not updated on the error path. Fix by setting it.
Fixes: f4aa081949e7b6 ("perf tools: Add Intel PT decoder")
Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: [email protected] # v5.15+
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
FUP packets contain IP information, which makes them also an 'instruction'
event in 'hop' mode i.e. the itrace 'q' option. That wasn't happening, so
restructure the logic so that FUP events are added along with appropriate
'instruction' and 'branch' events.
Fixes: 7c1b16ba0e26e6 ("perf intel-pt: Add support for decoding FUP/TIP only")
Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: [email protected] # v5.15+
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
Code after label 'next:' in intel_pt_walk_trace() assumes 'err' is zero,
but it may not be, if arrived at via a 'goto'. Ensure it is zero.
Fixes: 7c1b16ba0e26e6 ("perf intel-pt: Add support for decoding FUP/TIP only")
Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: [email protected] # v5.15+
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
An overflow (OVF packet) is treated as an error because it represents a
loss of trace data, but there is no loss of synchronization, so the packet
state should be INTEL_PT_STATE_IN_SYNC not INTEL_PT_STATE_ERR_RESYNC.
To support that, some additional variables must be reset, and the FUP
packet that may follow OVF is treated as an FUP event.
Fixes: f4aa081949e7b6 ("perf tools: Add Intel PT decoder")
Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: [email protected] # v5.15+
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
intel_pt_fup_event() assumes it can overwrite the state type if there has
been an FUP event, but this is an unnecessary and unexpected constraint on
callers.
Fix by touching only the state type flags that are affected by an FUP
event.
Fixes: a472e65fc490a ("perf intel-pt: Add decoder support for ptwrite and power event packets")
Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: [email protected] # v5.15+
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
When syncing, it may be that branch packet generation is not enabled at
that point, in which case there will not immediately be a control-flow
packet, so some packets before a control flow packet turns up, get
ignored. However, the decoder is in sync as soon as a PSB is found, so
the state should be set accordingly.
Fixes: f4aa081949e7b6 ("perf tools: Add Intel PT decoder")
Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: [email protected] # v5.15+
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
usage
Packet generation enable (PGE) refers to whether control flow (COFI)
packets are being produced.
PGE may be false even when branch-tracing is enabled, due to being
out-of-context, or outside a filter address range. Fix some missing PGE
usage.
Fixes: 7c1b16ba0e26e6 ("perf intel-pt: Add support for decoding FUP/TIP only")
Fixes: 839598176b0554 ("perf intel-pt: Allow decoding with branch tracing disabled")
Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: [email protected] # v5.15+
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
The size of the cache of register values is arch-dependant
(PERF_REGS_MAX). This has the potential of causing an out-of-bounds
access in the function "perf_reg_value" if the local architecture
contains less registers than the one the perf.data file was recorded on.
Since the maximum number of registers is bound by the bitmask "u64
cache_mask", and the size of the cache when running under x86 systems is
64 already, fix the size to 64 and add a range-check to the function
"perf_reg_value" to prevent out-of-bounds access.
Reported-by: Alexandre Truong <[email protected]>
Reviewed-by: Kajol Jain <[email protected]>
Signed-off-by: German Gomez <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: John Garry <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mathieu Poirier <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
|
|
The .fixup has gone the way of the Dodo, that test will always be
false.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: Josh Poimboeuf <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
|
|
This code puts an exception table entry on the PREFETCH instruction to
overwrite it with a JMP.d8 when it triggers an exception. Except of
course, our code is no longer writable, also SMP.
Instead of fixing this broken mess, simply take it out.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Borislav Petkov <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
|
|
Currently, the single test program, debugfs.sh, contains all test cases
for DAMON. When one of the cases fails, finding which case is failed
from the test log is not so easy, and all remaining tests will be
skipped. To improve the situation, this commit splits the single
program into small test programs having their own names.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: SeongJae Park <[email protected]>
Cc: Brendan Higgins <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
DAMON debugfs interface users were able to trigger warning by writing
some files with arbitrarily large 'count' parameter. The issue is fixed
with commit db7a347b26fe ("mm/damon/dbgfs: use '__GFP_NOWARN' for
user-specified size buffer allocation"). This commit adds a test case
for the issue in DAMON selftests to avoid future regressions.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: SeongJae Park <[email protected]>
Cc: Brendan Higgins <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
A patch titled "mm/damon/schemes: add the validity judgment of
thresholds"[1] makes DAMON debugfs interface to validate DAMON scheme
inputs. This commit adds a test case for the validation logic in DAMON
selftests.
[1] https://lore.kernel.org/linux-mm/d78360e52158d786fcbf20bc62c96785742e76d3.1637239568.git.xhao@linux.alibaba.com/
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: SeongJae Park <[email protected]>
Cc: Brendan Higgins <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
DAMON debugfs didn't check empty targets when starting monitoring, and
the issue is fixed with commit b5ca3e83ddb0 ("mm/damon/dbgfs: add
adaptive_targets list check before enable monitor_on"). To avoid future
regression, this commit adds a test case for that in DAMON selftests.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: SeongJae Park <[email protected]>
Cc: Brendan Higgins <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|