Changes in Makefile

76d46ad2c52a4d7631274a35777ac4601103e2aa - selftests/pidfd: add CLONE_AUTOREAP tests

Thu, 26 Feb 2026 14:51:02 +0100

selftests/pidfd: add CLONE_AUTOREAP testsAdd tests for the new CLONE_AUTOREAP clone3() flag:- autoreap_without_pidfd: CLONE_AUTOREAP without CLONE_PIDFD works (fire-and-forget)- autoreap_rejects_exit_signal: CLONE_AUTOREAP with non-zero exit_signal fails- autoreap_rejects_parent: CLONE_AUTOREAP with CLONE_PARENT fails- autoreap_rejects_thread: CLONE_AUTOREAP with CLONE_THREAD fails- autoreap_basic: child exits, pidfd poll works, PIDFD_GET_INFO returns correct exit code, waitpid() returns -ECHILD- autoreap_signaled: child killed by signal, exit info correct via pidfd- autoreap_reparent: autoreap grandchild reparented to subreaper still auto-reaps- autoreap_multithreaded: autoreap process with sub-threads auto-reaps after last thread exits- autoreap_no_inherit: grandchild forked without CLONE_AUTOREAP becomes a regular zombieLink: https://patch.msgid.link/20260226-work-pidfs-autoreap-v5-4-d148b984a989@kernel.orgSigned-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

914e6b1e85c5715ca2e7ec6293c05c71e9a98e86 - selftests/pidfd: decode pidfd file handles withou having to specify an fd

Tue, 24 Jun 2025 10:29:14 +0200

selftests/pidfd: decode pidfd file handles withou having to specify an fdLink: https://lore.kernel.org/20250624-work-pidfs-fhandle-v2-11-d02a04858fe3@kernel.orgReviewed-by: Jan Kara Reviewed-by: Amir Goldstein Signed-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

8c2ab04135682d0f5b1eb1c74ac5f328b65015ea - selftests/pidfd: test setattr support

Wed, 18 Jun 2025 22:53:49 +0200

selftests/pidfd: test setattr supportVerify that ->setattr() on a pidfd doens't work.Link: https://lore.kernel.org/20250618-work-pidfs-persistent-v2-15-98f3456fd552@kernel.orgReviewed-by: Alexander Mikhalitsyn Signed-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

49fba3725910c54878212ca08b968b9e1285866c - selftests/pidfd: test extended attribute support

Wed, 18 Jun 2025 22:53:47 +0200

selftests/pidfd: test extended attribute supportAdd tests for extended attribute support on pidfds.Link: https://lore.kernel.org/20250618-work-pidfs-persistent-v2-13-98f3456fd552@kernel.orgReviewed-by: Alexander Mikhalitsyn Signed-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

56f235da15d02c550c0ae25da9c62ecfe7222d38 - selftests/pidfd: add seventh PIDFD_INFO_EXIT selftest

Wed, 05 Mar 2025 11:08:26 +0100

selftests/pidfd: add seventh PIDFD_INFO_EXIT selftestAdd a selftest for PIDFD_INFO_EXIT behavior.Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-16-c8c3d8361705@kernel.orgSigned-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

853ab1ff2cf9b61e26a3029a895a725837f83e18 - selftests/pidfd: add first PIDFD_INFO_EXIT selftest

Wed, 05 Mar 2025 11:08:20 +0100

selftests/pidfd: add first PIDFD_INFO_EXIT selftestAdd a selftest for PIDFD_INFO_EXIT behavior.Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-10-c8c3d8361705@kernel.orgSigned-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

f63df61651be541cc5699083faa1bfbaa105ed44 - selftests: add pidfd bind-mount tests

Thu, 19 Dec 2024 18:01:33 +0100

selftests: add pidfd bind-mount testsLink: https://lore.kernel.org/r/20241219-work-pidfs-mount-v1-2-dbc56198b839@kernel.orgSigned-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

59a42b0e78888e2d9a459b12e8d1eb09fb4a3c7b - selftests/pidfd: add pidfs file handle selftests

Mon, 02 Dec 2024 23:44:52 +0100

selftests/pidfd: add pidfs file handle selftestsAdd selftests for pidfs file handles.Link: https://lore.kernel.org/r/20241202-imstande-einsicht-d78753e1c632@braunerReviewed-by: Amir Goldstein Signed-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

3f7d71768795c386019f2295c1986d00035c9f0f - selftests: pidfd: Fix incorrect kernel headers search path

Fri, 27 Jan 2023 14:57:41 +0100

selftests: pidfd: Fix incorrect kernel headers search pathUse $(KHDR_INCLUDES) as lookup path for kernel headers. This preventsbuilding against kernel headers from the build environment in scenarioswhere kernel headers are installed into a specific output directory(O=...).Signed-off-by: Mathieu Desnoyers Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.orgCc: Ingo Molnar Cc: # 5.18+Signed-off-by: Shuah Khan List of files: /linux/tools/testing/selftests/pidfd/Makefile

3d982441308ebdf713771c8a85c23d9b8b66b4d4 - selftests: pidfd: Fix compling warnings

Thu, 01 Sep 2022 05:17:34 +0200

selftests: pidfd: Fix compling warningsFix warnings and enable Wall.pidfd_wait.c: In function ‘wait_nonblock’:pidfd_wait.c:150:13: warning: unused variable ‘status’ [-Wunused-variable] 150 | int pidfd, status = 0; | ^~~~~~...pidfd_test.c: In function ‘child_poll_exec_test’:pidfd_test.c:438:1: warning: no return statement in function returning non-void [-Wreturn-type] 438 | } | ^Signed-off-by: Li Zhijian v2: fix mistake assignment to pidfdSigned-off-by: Shuah Khan List of files: /linux/tools/testing/selftests/pidfd/Makefile

2b40c5db73e239531ea54991087f4edc07fbb08e - selftests/pidfd: add pidfd setns tests

Tue, 05 May 2020 16:04:32 +0200

selftests/pidfd: add pidfd setns testsThis is basically a test-suite for setns() and as of now contains:- test that we can't pass garbage flags- test that we can't attach to the namespaces of task that has already exited- test that we can incrementally setns into all namespaces of a target task using a pidfd- test that we can setns atomically into all namespaces of a target task- test that we can't cross setns into a user namespace outside of our user namespace hierarchy- test that we can't setns into namespaces owned by user namespaces over which we are not privilegedSigned-off-by: Christian Brauner Link: https://lore.kernel.org/r/20200505140432.181565-4-christian.brauner@ubuntu.com List of files: /linux/tools/testing/selftests/pidfd/Makefile

873dfd7881d1d8840bf69c8c164f5323db7417fa - test: Add test for pidfd getfd

Tue, 07 Jan 2020 18:59:27 +0100

test: Add test for pidfd getfdThe following tests: * Fetch FD, and then compare via kcmp * Make sure getfd can be blocked by blocking ptrace_may_access * Making sure fetching bad FDs fails * Make sure trying to set flags to non-zero results in an EINVALSigned-off-by: Sargun Dhillon Acked-by: Christian Brauner Link: https://lore.kernel.org/r/20200107175927.4558-5-sargun@sargun.meSigned-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

2def297ec7fbf68cedc48f69e1f600fef13f2e96 - pidfd: add tests for NSpid info in fdinfo

Mon, 14 Oct 2019 18:20:33 +0200

pidfd: add tests for NSpid info in fdinfoAdd a test that checks that if pid namespaces are configured the fdinfofile of a pidfd contains an NSpid: entry containing the process id inthe current and additionally all nested namespaces. In the case thata pidfd is from a pid namespace not in the same namespace hierarchy asthe process accessing the fdinfo file, ensure the 'NSpid' shows 0 forthat pidfd, analogous to the 'Pid' entry.Signed-off-by: Christian Kellner Acked-by: Christian Brauner Link: https://lore.kernel.org/r/20191014162034.2185-2-ckellner@redhat.comSigned-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

3969e76909d3aa06715997896184ee684f68d164 - selftests: pidfd: Fix undefined reference to pthread_create()

Tue, 24 Sep 2019 21:52:37 +0200

selftests: pidfd: Fix undefined reference to pthread_create()Fix build failure:undefined reference to `pthread_create'collect2: error: ld returned 1 exit statusFix CFLAGS to include pthread correctly.Fixes: 740378dc7834 ("pidfd: add polling selftests")Signed-off-by: Shuah Khan Reviewed-by: Christian Brauner Cc: Link: https://lore.kernel.org/r/20190924195237.30519-1-skhan@linuxfoundation.orgSigned-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

aed5a8df3dbbd804409d40f821e0768891cfd5ab - tests: add pidfd poll tests

Fri, 26 Jul 2019 18:22:26 +0200

tests: add pidfd poll testsThis adds testing for polling on pidfd of a process being killed. Test runs10000 iterations by default to stress test pidfd polling functionality.It accepts an optional command-line parameter to override the number oriterations to run.Specifically, it tests for:- pidfd_open on a child process succeeds- pidfd_send_signal on a child process succeeds- polling on pidfd succeeds and returns exactly one event- returned event is POLLIN- event is received within 3 secs of the process being killed10000 iterations was chosen because of the race condition being testedwhich is not consistently reproducible but usually is revealed after lessthan 2000 iterations.Reveals race fixed by commit b191d6491be6 ("pidfd: fix a poll race when setting exit_state")Signed-off-by: Suren Baghdasaryan Link: https://lore.kernel.org/r/20190726162226.252750-2-surenb@google.comSigned-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

e63f3085709e92bd876e2977a07099d56bbda1c2 - pidfd: add pidfd_wait tests

Sun, 28 Jul 2019 00:22:30 +0200

pidfd: add pidfd_wait testsAdd tests for pidfd_wait() and CLONE_WAIT_PID:- test that waitid(P_PIDFD) fails on /proc/- test that waitid(P_PIDFD) fails on /dev/null- test that waitid(P_PIDFD) can wait on a pidfd- test that waitid(P_PIDFD) can wait on a pidfd and return siginfo_t- test that waitid(P_PIDFD) works with WEXITED- test that waitid(P_PIDFD) works with WSTOPPED- test that waitid(P_PIDFD) works with WUNTRACED- test that waitid(P_PIDFD) works with WCONTINUED- test that waitid(P_PIDFD) works with WNOWAIT- test that waitid(P_PIDFD)works with WNOHANGSigned-off-by: Christian Brauner Reviewed-by: Kees Cook Cc: Arnd Bergmann Cc: "Eric W. Biederman" Cc: Joel Fernandes (Google) Cc: Thomas Gleixner Cc: David Howells Cc: Jann Horn Cc: Andy Lutomirsky Cc: Andrew Morton Cc: Oleg Nesterov Cc: Aleksa Sarai Cc: Linus Torvalds Cc: Al Viro Link: https://lore.kernel.org/r/20190727222229.6516-3-christian@brauner.io List of files: /linux/tools/testing/selftests/pidfd/Makefile

172bb24a4f480c180bee646f6616f714ac4bcab2 - tests: add pidfd_open() tests

Sat, 23 Mar 2019 12:24:21 +0100

tests: add pidfd_open() testsThis adds testing for the new pidfd_open() syscalls. Specifically, we test:- that no invalid flags can be passed to pidfd_open()- that no invalid pid can be passed to pidfd_open()- that a pidfd can be retrieved with pidfd_open()- that the retrieved pidfd references the correct pidSigned-off-by: Christian Brauner Cc: Arnd Bergmann Cc: "Eric W. Biederman" Cc: Kees Cook Cc: Joel Fernandes (Google) Cc: Thomas Gleixner Cc: Jann Horn Cc: David Howells Cc: "Michael Kerrisk (man-pages)" Cc: Andy Lutomirsky Cc: Andrew Morton Cc: Oleg Nesterov Cc: Aleksa Sarai Cc: Linus Torvalds Cc: Al Viro Cc: linux-api@vger.kernel.org List of files: /linux/tools/testing/selftests/pidfd/Makefile

740378dc7834bc511ac1ecb2157696681d2a1d32 - pidfd: add polling selftests

Tue, 30 Apr 2019 18:21:54 +0200

pidfd: add polling selftestsOther than verifying pidfd based polling, the tests make sure thatwait semantics are preserved with the pidfd poll. Notably the 2 cases:1. If a thread group leader exits while threads still there, then no pidfd poll notifcation should happen.2. If a non-thread group leader does an execve, then the thread group leader is signaled to exit and is replaced with the execing thread as the new leader, however the parent is not notified in this case.Signed-off-by: Joel Fernandes (Google) Signed-off-by: Christian Brauner List of files: /linux/tools/testing/selftests/pidfd/Makefile

575a0ae9744d571f7c6aae4487a05850baae9e1c - selftests: add tests for pidfd_send_signal()

Sat, 29 Dec 2018 22:27:33 +0100

selftests: add tests for pidfd_send_signal()As suggested by Andrew Morton in [1] add selftests for the newsys_pidfd_send_signal() syscall:/* test_pidfd_send_signal_syscall_support */Test whether the pidfd_send_signal() syscall is supported and the tests canbe run or need to be skipped./* test_pidfd_send_signal_simple_success */Test whether sending a signal via a pidfd works./* test_pidfd_send_signal_exited_fail */Verify that sending a signal to an already exited process fails with ESRCH./* test_pidfd_send_signal_recycled_pid_fail */Verify that a recycled pid cannot be signaled via a pidfd referring to analready exited process that had the same pid (cf. [2], [3]).[1]: https://lore.kernel.org/lkml/20181228152012.dbf0508c2508138efc5f2bbe@linux-foundation.org/[2]: https://lore.kernel.org/lkml/20181230210245.GA30252@mail.hallyn.com/[3]: https://lore.kernel.org/lkml/20181230232711.7aayb7vnhogbv4co@brauner.io/Cc: Arnd Bergmann Cc: "Eric W. Biederman" Cc: Kees Cook Cc: Jann Horn Cc: Andy Lutomirsky Cc: Andrew Morton Cc: Oleg Nesterov Cc: Aleksa Sarai Cc: Al Viro Cc: Florian Weimer Signed-off-by: Christian Brauner Reviewed-by: Tycho Andersen Acked-by: Serge Hallyn List of files: /linux/tools/testing/selftests/pidfd/Makefile