diff options
author | Julia Lawall <julia@diku.dk> | 2009-07-28 19:53:24 +0400 |
---|---|---|
committer | Avi Kivity <avi@redhat.com> | 2009-09-10 19:11:12 +0400 |
commit | 6223011fb9f90fab92635f1f782196cbd2ccf24f (patch) | |
tree | 61a7c3c2ef16c66187df99b7258eadf976a096c2 /Documentation/sgi-visws.txt | |
parent | 28bcb112183cb822a394b155a2e7d788fe4a109a (diff) | |
download | linux-6223011fb9f90fab92635f1f782196cbd2ccf24f.tar.xz |
KVM: correct error-handling code
This code is not executed before file has been initialized to the result of
calling eventfd_fget. This function returns an ERR_PTR value in an error
case instead of NULL. Thus the test that file is not NULL is always true.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@match exists@
expression x, E;
statement S1, S2;
@@
x = eventfd_fget(...)
... when != x = E
(
* if (x == NULL || ...) S1 else S2
|
* if (x == NULL && ...) S1 else S2
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'Documentation/sgi-visws.txt')
0 files changed, 0 insertions, 0 deletions