[glibc/arm/morello/main] Linux: Terminate subprocess on late failure in tst-pidfd (bug 29485)

[Szabolcs Nagy <nsz@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e982657073c4db21459ffd9e17bc505b1d64b876

commit e982657073c4db21459ffd9e17bc505b1d64b876
Author: Florian Weimer <fweimer@redhat.com>
Date:   Mon Aug 15 16:43:59 2022 +0200

    Linux: Terminate subprocess on late failure in tst-pidfd (bug 29485)
    
    Reviewed-by: Carlos O'Donell <carlos@redhat.com>
    (cherry picked from commit f82e05ebb295cadd35f7372f652c72264da810ad)

Diff:
---
 NEWS                                | 1 +
 sysdeps/unix/sysv/linux/tst-pidfd.c | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/NEWS b/NEWS
index 15f3dd2cdb..f8fb8db510 100644
--- a/NEWS
+++ b/NEWS
@@ -10,6 +10,7 @@ Version 2.36.1
 The following bugs are resolved with this release:
 
   [29446] _dlopen now ignores dl_caller argument in static mode
+  [29485] Linux: Terminate subprocess on late failure in tst-pidfd
 
 \f
 Version 2.36
diff --git a/sysdeps/unix/sysv/linux/tst-pidfd.c b/sysdeps/unix/sysv/linux/tst-pidfd.c
index 037af22290..5711d1c312 100644
--- a/sysdeps/unix/sysv/linux/tst-pidfd.c
+++ b/sysdeps/unix/sysv/linux/tst-pidfd.c
@@ -147,8 +147,11 @@ do_test (void)
        may be denied if the process doesn't have CAP_SYS_PTRACE or
        if a LSM security_ptrace_access_check denies access.  */
     if (fd == -1 && errno == EPERM)
-      FAIL_UNSUPPORTED ("don't have permission to use pidfd_getfd on pidfd, "
-			"skipping test");
+      {
+	TEST_COMPARE (pidfd_send_signal (pidfd, SIGKILL, NULL, 0), 0);
+	FAIL_UNSUPPORTED ("don't have permission to use pidfd_getfd on pidfd, "
+			  "skipping test");
+      }
     TEST_VERIFY (fd > 0);
 
     char *path = xasprintf ("/proc/%d/fd/%d", pid, remote_fd);