linux-dev/tools/testing/selftests/pidfd/pidfd_poll_test.c, branch linus/masterLinux kernel development work - see feature brancheshttps://git.zx2c4.com/linux-dev/atom/tools/testing/selftests/pidfd/pidfd_poll_test.c?h=linus%2Fmaster2020-10-27T22:51:36Zselftests: pidfd: fix compilation errors due to wait.h2020-10-27T22:51:36ZTommi Rantalatommi.t.rantala@nokia.com2020-10-08T12:26:22Zurn:sha1:1948172fdba5ad643529ddcd00a601c0caa913ed
Drop unneeded <linux/wait.h> header inclusion to fix pidfd compilation
errors seen in Fedora 32:
In file included from pidfd_open_test.c:9:
../../../../usr/include/linux/wait.h:17:16: error: expected identifier before numeric constant
17 | #define P_ALL 0
| ^
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
tests: add pidfd poll tests2019-08-06T17:52:41ZSuren Baghdasaryansurenb@google.com2019-07-26T16:22:26Zurn:sha1:aed5a8df3dbbd804409d40f821e0768891cfd5ab
This adds testing for polling on pidfd of a process being killed. Test runs
10000 iterations by default to stress test pidfd polling functionality.
It accepts an optional command-line parameter to override the number or
iterations 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 killed
10000 iterations was chosen because of the race condition being tested
which is not consistently reproducible but usually is revealed after less
than 2000 iterations.
Reveals race fixed by commit b191d6491be6 ("pidfd: fix a poll race when setting exit_state")
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Link: https://lore.kernel.org/r/20190726162226.252750-2-surenb@google.com
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>