Tyler Hicks a88e01df10 selftests/ipc: Fix test failure seen after initial test run ... [ Upstream commit b87080eab4 ] After successfully running the IPC msgque test once, subsequent runs result in a test failure: $ sudo ./run_kselftest.sh TAP version 13 1..1 # selftests: ipc: msgque # Failed to get stats for IPC queue with id 0 # Failed to dump queue: -22 # Bail out! # # Pass 0 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0 not ok 1 selftests: ipc: msgque # exit=1 The dump_queue() function loops through the possible message queue index values using calls to msgctl(kern_id, MSG_STAT, ...) where kern_id represents the index value. The first time the test is ran, the initial index value of 0 is valid and the test is able to complete. The index value of 0 is not valid in subsequent test runs and the loop attempts to try index values of 1, 2, 3, and so on until a valid index value is found that corresponds to the message queue created earlier in the test. The msgctl() syscall returns -1 and sets errno to EINVAL when invalid index values are used. The test failure is caused by incorrectly comparing errno to -EINVAL when cycling through possible index values. Fix invalid test failures on subsequent runs of the msgque test by correctly comparing errno values to a non-negated EINVAL. Fixes: 3a665531a3 ("selftests: IPC message queue copy feature test") Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-05-10 10:28:58 +02:00
..
fault-injection	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ktest	ktest: Add timeout for ssh sync testing	2020-03-20 10:54:16 +01:00
nvdimm	mm, devm_memremap_pages: mark devm_memremap_pages() EXPORT_SYMBOL_GPL	2019-01-13 10:01:02 +01:00
radix-tree	idr: Fix idr_get_next race with idr_remove	2019-11-24 08:22:46 +01:00
selftests	selftests/ipc: Fix test failure seen after initial test run	2020-05-10 10:28:58 +02:00