Patch "selftests/clone3: Fix broken test under !CONFIG_TIME_NS" has been added to the 6.5-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    selftests/clone3: Fix broken test under !CONFIG_TIME_NS

to the 6.5-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     selftests-clone3-fix-broken-test-under-config_time_ns.patch
and it can be found in the queue-6.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From fc7f04dc23db50206bee7891516ed4726c3f64cf Mon Sep 17 00:00:00 2001
From: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
Date: Tue, 11 Jul 2023 17:13:34 +0800
Subject: selftests/clone3: Fix broken test under !CONFIG_TIME_NS

From: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>

commit fc7f04dc23db50206bee7891516ed4726c3f64cf upstream.

When execute the following command to test clone3 under !CONFIG_TIME_NS:

  # make headers && cd tools/testing/selftests/clone3 && make && ./clone3

we can see the following error info:

  # [7538] Trying clone3() with flags 0x80 (size 0)
  # Invalid argument - Failed to create new process
  # [7538] clone3() with flags says: -22 expected 0
  not ok 18 [7538] Result (-22) is different than expected (0)
  ...
  # Totals: pass:18 fail:1 xfail:0 xpass:0 skip:0 error:0

This is because if CONFIG_TIME_NS is not set, but the flag
CLONE_NEWTIME (0x80) is used to clone a time namespace, it
will return -EINVAL in copy_time_ns().

If kernel does not support CONFIG_TIME_NS, /proc/self/ns/time
will be not exist, and then we should skip clone3() test with
CLONE_NEWTIME.

With this patch under !CONFIG_TIME_NS:

  # make headers && cd tools/testing/selftests/clone3 && make && ./clone3
  ...
  # Time namespaces are not supported
  ok 18 # SKIP Skipping clone3() with CLONE_NEWTIME
  ...
  # Totals: pass:18 fail:0 xfail:0 xpass:0 skip:1 error:0

Link: https://lkml.kernel.org/r/1689066814-13295-1-git-send-email-yangtiezhu@xxxxxxxxxxx
Fixes: 515bddf0ec41 ("selftests/clone3: test clone3 with CLONE_NEWTIME")
Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
Suggested-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Christian Brauner <brauner@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 tools/testing/selftests/clone3/clone3.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/tools/testing/selftests/clone3/clone3.c
+++ b/tools/testing/selftests/clone3/clone3.c
@@ -196,7 +196,12 @@ int main(int argc, char *argv[])
 			CLONE3_ARGS_NO_TEST);
 
 	/* Do a clone3() in a new time namespace */
-	test_clone3(CLONE_NEWTIME, 0, 0, CLONE3_ARGS_NO_TEST);
+	if (access("/proc/self/ns/time", F_OK) == 0) {
+		test_clone3(CLONE_NEWTIME, 0, 0, CLONE3_ARGS_NO_TEST);
+	} else {
+		ksft_print_msg("Time namespaces are not supported\n");
+		ksft_test_result_skip("Skipping clone3() with CLONE_NEWTIME\n");
+	}
 
 	/* Do a clone3() with exit signal (SIGCHLD) in flags */
 	test_clone3(SIGCHLD, 0, -EINVAL, CLONE3_ARGS_NO_TEST);


Patches currently in stable-queue which might be from yangtiezhu@xxxxxxxxxxx are

queue-6.5/selftests-clone3-fix-broken-test-under-config_time_ns.patch



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux