- 06 May, 2024 35 commits
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John Hubbard authored
First of all, in order to build with clang at all, one must first apply Valentin Obst's build fix for LLVM [1]. Once that is done, then when building with clang, via: make LLVM=1 -C tools/testing/selftests ...the following error occurs: clang: error: cannot specify -o when generating multiple output files This is because clang, unlike gcc, won't accept invocations of this form: clang file1.c header2.h Fix this by using selftests/lib.mk facilities for tracking local header file dependencies: add them to LOCAL_HDRS, leaving only the .c files to be passed to the compiler. [1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c49f@valentinobst.de/ Fixes: 8e289f45 ("selftests/resctrl: Add resctrl.h into build deps") Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by:John Hubbard <jhubbard@nvidia.com> Acked-by:
Reinette Chatre <reinette.chatre@intel.com> Signed-off-by:
Shuah Khan <skhan@linuxfoundation.org>
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John Hubbard authored
First of all, in order to build with clang at all, one must first apply Valentin Obst's build fix for LLVM [1]. Once that is done, then when building with clang, via: make LLVM=1 -C tools/testing/selftests ...the following error occurs: clang: error: cannot specify -o when generating multiple output files This is because clang, unlike gcc, won't accept invocations of this form: clang file1.c header2.h While trying to fix this, I noticed that: a) selftests/lib.mk already avoids the problem, and b) The binderfs Makefile indavertently bypasses the selftests/lib.mk build system, and quitely uses Make's implicit build rules for .c files instead. The Makefile attempts to set up both a dependency and a source file, neither of which was needed, because lib.mk is able to automatically handle both. This line: binderfs_test: binderfs_test.c ...causes Make's implicit rules to run, which builds binderfs_test without ever looking at lib.mk. Fix this by simply deleting the "binderfs_test:" Makefile target and letting lib.mk handle it instead. [1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c49f@valentinobst.de/ Fixes: 6e29225a ("binderfs: port tests to test harness infrastructure") Cc: Christian Brauner <brauner@kernel.org> Signed-off-by:Christian Brauner <brauner@kernel.org> Signed-off-by:
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Yo-Jung (Leo) Lin authored
Add extra colon to mark command in the next paragraph as codeblock Signed-off-by:
Yo-Jung (Leo) Lin <0xff07@gmail.com> Signed-off-by:
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Nathan Chancellor authored
Commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn") marked functions that call exit() as __noreturn but it did not change the return type of these functions from 'void' to 'int' like it should have (since a noreturn function by definition cannot return an integer because it does not return...) because there were many tests that return the result of the ksft_exit functions, even though it has never been used due to calling exit(). Now that all uses of 'return ksft_exit...()' have been cleaned up properly, change the types of the ksft_exit...() functions to void to match their __noreturn nature. Reviewed-by:
Muhammad Usama Anjum <usama.anjum@collabora.com> Reviewed-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Nathan Chancellor <nathan@kernel.org> Signed-off-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the call to ksft_exit_pass(), as __noreturn prevents the compiler from warning that a caller of ksft_exit_pass() does not return a value because the program will terminate upon calling these functions. Reviewed-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the calls to ksft_exit_...(), as __noreturn prevents the compiler from warning that a caller of the ksft_exit functions does not return a value because the program will terminate upon calling these functions. Reviewed-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the call to ksft_exit_pass(), as __noreturn prevents the compiler from warning that a caller of ksft_exit_pass() does not return a value because the program will terminate upon calling these functions (which is what the comment alluded to as well). Reviewed-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the calls to ksft_exit_skip(), as __noreturn prevents the compiler from warning that a caller of ksft_exit_skip() does not return a value because the program will terminate upon calling these functions. Reviewed-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the calls to ksft_exit_{pass,fail}(), as __noreturn prevents the compiler from warning that a caller of the ksft_exit functions does not return a value because the program will terminate upon calling these functions. Just removing 'return' would have resulted in !ret ? ksft_exit_pass() : ksft_exit_fail(); so convert that into the more idiomatic if (ret) ksft_exit_fail(); ksft_exit_pass(); Reviewed-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the calls to ksft_exit_...(), as __noreturn prevents the compiler from warning that a caller of the ksft_exit functions does not return a value because the program will terminate upon calling these functions. Reviewed-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the calls to ksft_exit_pass(), as __noreturn prevents the compiler from warning that a caller of ksft_exit_pass() does not return a value because the program will terminate upon calling these functions. Reviewed-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the calls to ksft_exit_...(), as __noreturn prevents the compiler from warning that a caller of the ksft_exit functions does not return a value because the program will terminate upon calling these functions. Reviewed-by:
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Nathan Chancellor authored
After commit f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn"), ksft_exit_...() functions are marked as __noreturn, which means the return type should not be 'int' but 'void' because they are not returning anything (and never were since exit() has always been called). To facilitate updating the return type of these functions, remove 'return' before the calls to ksft_exit_{pass,fail}(), as __noreturn prevents the compiler from warning that a caller of the ksft_exit functions does not return a value because the program will terminate upon calling these functions. Just removing 'return' would have resulted in !ret ? ksft_exit_pass() : ksft_exit_fail(); so convert that into the more idiomatic if (ret) ksft_exit_fail(); ksft_exit_pass(); Reviewed-by:
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Nícolas F. R. A. Prado authored
There is one use of bash specific syntax in the script. Change it to the equivalent POSIX syntax. This doesn't change functionality and allows the test to be run on shells other than bash. Reported-by:
Mike Looijmans <mike.looijmans@topic.nl> Closes: https://lore.kernel.org/all/efae4037-c22a-40be-8ba9-7c1c12ece042@topic.nl/ Fixes: 4a679c5a ("selftests: Add test to verify power supply properties") Signed-off-by:
Nícolas F. R. A. Prado <nfraprado@collabora.com> Reviewed-by:
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Nícolas F. R. A. Prado authored
There are a couple uses of bash specific syntax in the script. Change them to the equivalent POSIX syntax. This doesn't change functionality and allows non-bash test scripts to make use of these helpers. Reported-by:
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Muhammad Usama Anjum authored
This test outputs lots of information. Let's conform the core part of the test to TAP and leave the information printing messages for now. Include ktap_helpers.sh to print conformed logs. Use KSFT_* macros to return the correct exit code for the kselftest framework and CIs to understand the exit status. Signed-off-by:
Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by:
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Muhammad Usama Anjum authored
Let the compilers (clang) know that this function would just call exit() and would never return. It is needed to avoid false positive static analysis errors. All similar functions calling exit() unconditionally have been marked as __noreturn. Signed-off-by:
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Mark Brown authored
When logging an error from calling waitpid() on the child we print a misleading error message saying that the error we report was returned by the chilld. Fix this to say the error is from waitpid(). Applied after fixing merge conflict: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Mark Brown authored
When the child exits during the clone3() selftest we use WEXITSTATUS() to get the exit status from the process without first checking WIFEXITED() to see if the result will be valid. This can lead to incorrect results, for example if the child exits due to signal. Add a WIFEXTED() check and report any non-standard exit as a failure, using EXIT_FAILURE as the exit status for call_clone3() since we otherwise report 0 or negative errnos. Signed-off-by:
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Mark Brown authored
Shuah reported a compiler warning with an Ubuntu GCC 13 build, I've been unable to reproduce it but hopefully this fixes the issue: clone3_set_tid.c:136:43: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘size_t’ {aka ‘long unsigned int’} [-Wformat=] Reported-by: -
Mark Brown authored
In order to facilitate debugging of issues from automated runs of the ftrace selftests turn on verbose logging by default when run from the kselftest runner. This is primarily used by automated systems where developers may not have direct access to the system so defaulting to providing diagnostic information which might help debug problems seems like a good idea. When tests pass no extra output is generated, when they fail a full log of the test run is provided. Since this really is rather verbose when there are a large number of test failures or output is slow (eg, with a serial console) this could substantially increase the run time for the tests which might present problems with timeout detection for affected systems, hopefully we keep the tests running well enough that this is not too much of an issue. Signed-off-by:
Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by:
Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by:
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Mark Brown authored
When -v is specified ftracetest will dump logs of test execution to the console which if -K is also specified for KTAP output will result in output that is not properly KTAP formatted. All that's required for KTAP formatting is that anything we log have a '#' at the start of the line so we can improve things by washing the output through a simple read loop. This will help automated parsers when verbose mode is enabled. Signed-off-by:
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Muhammad Usama Anjum authored
Use ksft_exit_fail_perror() to print the value of errno and its string form. This is the first user of the ksft_exit_fail_perror() and proves the usefulness of this API. Signed-off-by:
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Muhammad Usama Anjum authored
Add a version of ksft_exit_fail_msg() which prints the errno and its string form with ease. There is no benefit of exit message without errno. Whenever some error occurs, instead of printing errno manually, this function would be very helpful. In the next TAP ports or new tests, this function will be used instead of ksft_exit_fail_msg() as it prints errno. Resolved merge conflict found in next between the following commits: f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn") f07041728422 ("selftests: add ksft_exit_fail_perror()") Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Shuah Khan <skhan@linuxfoundation.org> Signed-off-by:
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Muhammad Usama Anjum authored
The comment on top of the file is used by many developers to glance over all the available functions. Add the recently added ksft_perror() to it. Signed-off-by:
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Mark Brown authored
The test results reported for the clone3_set_tid tests interact poorly with automation for running kselftest since the reported test names include TIDs dynamically allocated at runtime. A lot of automation for running kselftest will compare runs by looking at the test name to identify if the same test is being run so changing names make it look like the testsuite has been updated to include new tests. This makes the results display less clearly and breaks cases like bisection. Address this by providing a brief description of the tests and logging that along with the stable parameters for the test currently logged. The TIDs are already logged separately in existing logging except for the final test which has a new log message added. We also tweak the formatting of the logging of expected/actual values for clarity. There are still issues with the logging of skipped tests (many are simply not logged at all when skipped and all are logged with different names) but these are less disruptive since the skips are all based on not being run as root, a condition likely to be stable for a given test system. Acked-by:
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Maciej Wieczor-Retman authored
Every test calls its cleanup function at the end of it's test function. After the cleanup function pointer is added to the test framework this can be simplified to executing the callback function at the end of the generic test running function. Make test cleanup functions static and call them from the end of run_single_test() from the resctrl_test's cleanup function pointer. Signed-off-by:
Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com> Reviewed-by:
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Maciej Wieczor-Retman authored
Ctrl-c handler isn't aware of what test is currently running. Because of that it executes all cleanups even if they aren't necessary. Since the ctrl-c handler uses the sa_sigaction system no parameters can be passed to it as function arguments. Add a global variable to make ctrl-c handler aware of the currently run test and only execute the correct cleanup callback. Signed-off-by:
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Maciej Wieczor-Retman authored
Resctrl selftests use very similar functions to cleanup after themselves. This creates a lot of code duplication. Also not being hooked to the test framework means that ctrl-c handler isn't aware of what test is currently running and executes all cleanups even though only one is needed. Add a function pointer to the resctrl_test struct and attach to it cleanup functions from individual tests. Signed-off-by:
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Muhammad Usama Anjum authored
Conform the layout, informational and status messages to TAP. No functional change is intended other than the layout of output messages. Improve the TAP messages as well. Reviewed-by:
T.J. Mercier <tjmercier@google.com> Signed-off-by:
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Muhammad Usama Anjum authored
Conform the layout, informational and status messages to TAP. No functional change is intended other than the layout of output messages. Signed-off-by:
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Muhammad Usama Anjum authored
Conform the layout, informational and status messages to TAP. No functional change is intended other than the layout of output messages. Add more logic code to skip the tests if particular configuration isn't available to make sure that either we skip each test or mark it pass/fail. Signed-off-by:
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Muhammad Usama Anjum authored
There are multiple #ifdef blocks inside functions where they return just 0 if #ifdef is false. This makes number of tests counting difficult. Move those functions inside one #ifdef block and move all of them together. This is preparatory patch for next patch to convert this into TAP format. So in this patch, we are just moving functions around without any changes. With and without this patch, the output of this patch is same. Signed-off-by:
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Mark Brown authored
Currently the tty_tstamp_update test reports a different exit message for every path it can exit via. This can be confusing for automated systems as the string that gets logged is interpreted as a test name so if the test status changes they can't tell that it's the same test case that was run, they can see that the overall status of the test program is a failure but it's not clear that it was running the same test. Change all the messages that are logged to be diagnostic prints and log the name of the program as the test name. Signed-off-by:
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Mark Brown authored
Currently there's no helper which a test can use to report it's result as a KSFT_ result code, we can report a boolean pass/fail but not a skip. This is sometimes a useful idiom so let's add a helper ksft_test_result_report() which translates into the relevant report types. Due to the use of va_args in the result reporting functions this is done as a macro rather than an inline function as one might expect, none of the alternatives looked particularly great. Resolved merge conflict in next betwwen the following commits: f7d5bcd3 ("selftests: kselftest: Mark functions that unconditionally call exit() as __noreturn") 5d3a9274f0d1 ("kselftest: Add mechanism for reporting a KSFT_ result code") Reported-by:
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- 05 May, 2024 5 commits
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Linus Torvalds authored
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Linus Torvalds authored
epoll can call out to vfs_poll() with a file pointer that may race with the last 'fput()'. That would make f_count go down to zero, and while the ep->mtx locking means that the resulting file pointer tear-down will be blocked until the poll returns, it means that f_count is already dead, and any use of it won't actually get a reference to the file any more: it's dead regardless. Make sure we have a valid ref on the file pointer before we call down to vfs_poll() from the epoll routines. Link: https://lore.kernel.org/lkml/0000000000002d631f0615918f1e@google.com/ Reported-by: syzbot+045b454ab35fd82a35fb@syzkaller.appspotmail.com Reviewed-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/rasLinus Torvalds authored
Pull EDAC fixes from Borislav Petkov: - Fix error logging and check user-supplied data when injecting an error in the versal EDAC driver * tag 'edac_urgent_for_v6.9_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/versal: Do not log total error counts EDAC/versal: Check user-supplied data before injecting an error EDAC/versal: Do not register for NOC errors
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: - Fix incorrect delay handling in the plpks (keystore) code - Fix a panic when an LPAR boots with a frozen PE Thanks to Andrew Donnellan, Gaurav Batra, Nageswara R Sastry, and Nayna Jain. * tag 'powerpc-6.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/pseries/iommu: LPAR panics during boot up with a frozen PE powerpc/pseries: make max polling consistent for longer H_CALLs
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull misc x86 fixes from Ingo Molnar: - Remove the broken vsyscall emulation code from the page fault code - Fix kexec crash triggered by certain SEV RMP table layouts - Fix unchecked MSR access error when disabling the x2APIC via iommu=off * tag 'x86-urgent-2024-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Remove broken vsyscall emulation code from the page fault code x86/apic: Don't access the APIC when disabling x2APIC x86/sev: Add callback to apply RMP table fixups for kexec x86/e820: Add a new e820 table update helper
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