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| author | David Härdeman <david@hardeman.nu> | 2010-04-06 23:34:43 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-07 17:38:02 +0200 |
| commit | 530cd330dc3865e3107304a6e84fdc332aa72f7d (patch) | |
| tree | 414102f790dac9ad80af3c82935e5164b04a1b5e /include/linux/kfifo.h | |
| parent | mm: avoid null-pointer deref in sync_mm_rss() (diff) | |
| download | linux-530cd330dc3865e3107304a6e84fdc332aa72f7d.tar.xz linux-530cd330dc3865e3107304a6e84fdc332aa72f7d.zip | |
include/linux/kfifo.h: fix INIT_KFIFO()
DECLARE_KFIFO creates a union with a struct kfifo and a buffer array with
size [size + sizeof(struct kfifo)].
INIT_KFIFO then sets the buffer pointer in struct kfifo to point to the
beginning of the buffer array which means that the first call to kfifo_in
will overwrite members of the struct kfifo.
Signed-off-by: David Härdeman <david@hardeman.nu>
Acked-by: Stefani Seibold <stefani@seibold.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/kfifo.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index ece0b1c33816..e117b1aee69c 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -86,7 +86,8 @@ union { \ */ #define INIT_KFIFO(name) \ name = __kfifo_initializer(sizeof(name##kfifo_buffer) - \ - sizeof(struct kfifo), name##kfifo_buffer) + sizeof(struct kfifo), \ + name##kfifo_buffer + sizeof(struct kfifo)) /** * DEFINE_KFIFO - macro to define and initialize a kfifo |