[Bug libc/18877] arm: mmap offset regression

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=18877

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, master has been updated
       via  d3573f61aca67a398de7eaa7593d3973cb5fd154 (commit)
      from  8c17cb1f6455c7a5fd6a1d05a2394129dbce012b (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d3573f61aca67a398de7eaa7593d3973cb5fd154

commit d3573f61aca67a398de7eaa7593d3973cb5fd154
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu Aug 27 16:44:04 2015 -0300

    Fix wordsize-32 mmap offset for negative value (BZ#18877)

    This patch fixes the default wordsize-32 mmap implementation offset
    calculation for negative values.  Current code uses signed shift
    operation to calculate the multiple size to use with syscall and
    it is implementation defined.  Change it to use a division base
    on mmap page size (default being as before, 4096).

    Tested on armv7hf.

        [BZ #18877]
        * posix/Makefile (tests): Add tst-mmap-offset.
        * posix/tst-mmap.c: New file.
        * sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c (__mmap): Fix
        offset calculation for negative values.

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

Summary of changes:
 ChangeLog                                          |    9 +++
 NEWS                                               |    2 +-
 posix/Makefile                                     |    2 +-
 posix/tst-mmap-offset.c                            |   67 ++++++++++++++++++++
 sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c |    8 +-
 5 files changed, 82 insertions(+), 6 deletions(-)
 create mode 100644 posix/tst-mmap-offset.c

-- 
You are receiving this mail because:
You are on the CC list for the bug.