diff options
author | 2020-04-13 15:21:45 -0500 | |
---|---|---|
committer | 2020-04-14 10:24:28 -0600 | |
commit | b87080eab4c1377706c113fc9c0157f19ea8fed1 (patch) | |
tree | ea3d47e904c08036eaa8c75bb796e8548e24a481 | |
parent | Revert "Kernel selftests: tpm2: check for tpm support" (diff) | |
download | linux-b87080eab4c1377706c113fc9c0157f19ea8fed1.tar.gz linux-b87080eab4c1377706c113fc9c0157f19ea8fed1.tar.bz2 linux-b87080eab4c1377706c113fc9c0157f19ea8fed1.zip |
selftests/ipc: Fix test failure seen after initial test run
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: 3a665531a3b7 ("selftests: IPC message queue copy feature test")
Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
-rw-r--r-- | tools/testing/selftests/ipc/msgque.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/ipc/msgque.c b/tools/testing/selftests/ipc/msgque.c index 4c156aeab6b8..5ec4d9e18806 100644 --- a/tools/testing/selftests/ipc/msgque.c +++ b/tools/testing/selftests/ipc/msgque.c @@ -137,7 +137,7 @@ int dump_queue(struct msgque_data *msgque) for (kern_id = 0; kern_id < 256; kern_id++) { ret = msgctl(kern_id, MSG_STAT, &ds); if (ret < 0) { - if (errno == -EINVAL) + if (errno == EINVAL) continue; printf("Failed to get stats for IPC queue with id %d\n", kern_id); |