diff options
| author | Jeff Mahoney <jeffm@suse.com> | 2009-05-11 14:25:34 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-05-11 12:18:06 -0700 |
| commit | 2b79bc4f7ebbd5af3c8b867968f9f15602d5f802 (patch) | |
| tree | 135f195357e108b1cc7b5ef0a09d1e32b79fcce0 /mm/mremap.c | |
| parent | fd18de50b9e7965f93d231e7390436fb8900c0e6 (diff) | |
dup2: Fix return value with oldfd == newfd and invalid fd
The return value of dup2 when oldfd == newfd and the fd isn't valid is
not getting properly sign extended. We end up with 4294967287 instead
of -EBADF.
I've reproduced this on SLE11 (2.6.27.21), openSUSE Factory
(2.6.29-rc5), and Ubuntu 9.04 (2.6.28).
This patch uses a signed int for the error value so it is properly
extended.
Commit 6c5d0512a091480c9f981162227fdb1c9d70e555 introduced this
regression.
Reported-by: Jiri Dluhos <jdluhos@novell.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mremap.c')
0 files changed, 0 insertions, 0 deletions