GNU C Library master sources branch master updated. glibc-2.27.9000-565-gb444e8f

[azanella at sourceware dot org]

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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=b444e8f7cc40265c9a20ce5de5f3f6795b7f5028

commit b444e8f7cc40265c9a20ce5de5f3f6795b7f5028
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Tue Jul 10 09:24:40 2018 -0300

    Comment tst-ofdlocks-compat expected failure in some Linux releases
    
    As pointed out in a libc-alpha thread [1], the misc/tst-ofdlocks-compat
    may fail in some specific Linux releases.  This patch adds a comment
    along with a link to discussion in the test source code.
    
    No changes are expected.
    
    	* sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c: Add a comment about
    	a kernel issue which lead to test failure in some cases.
    
    [1] https://sourceware.org/ml/libc-alpha/2018-07/msg00243.html

diff --git a/ChangeLog b/ChangeLog
index d18c244..f21b5ad 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2018-07-10  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+
+	* sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c: Add a comment about
+	a kernel issue which lead to test failure in some cases.
+
 2018-07-10  Florian Weimer  <fweimer@redhat.com>
 
 	[BZ #23036]
diff --git a/sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c b/sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c
index d1d00eb..03c4abf 100644
--- a/sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c
+++ b/sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c
@@ -40,6 +40,14 @@ do_prepare (int argc, char **argv)
 
 #define PREPARE do_prepare
 
+/* Linux between 4.13 and 4.15 return EOVERFLOW for LFS OFD locks usage
+   in compat mode (non-LFS ABI running on a LFS default kernel, such as
+   i386 on a x86_64 kernel or s390-32 on a s390-64 kernel) [1].  This is
+   a kernel issue because __NR_fcntl64 is the expected way to use OFD locks
+   (used on GLIBC for both fcntl and fcntl64).
+
+   [1] https://sourceware.org/ml/libc-alpha/2018-07/msg00243.html  */
+
 static int
 do_test (void)
 {

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                     |    5 +++++
 sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c |    8 ++++++++
 2 files changed, 13 insertions(+), 0 deletions(-)


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