From: Miklos Szeredi <miklos@szeredi.hu>
This patch fixes a use after free bug, which could in theory cause memory
corruption. It was actually found with DEBUG_PAGEALLOC by Magnus
Johansson.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/fs/fuse/dev.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff -puN fs/fuse/dev.c~fuse-device-functions-use-after-free-fix fs/fuse/dev.c
--- 25/fs/fuse/dev.c~fuse-device-functions-use-after-free-fix Fri Mar 4 15:34:45 2005
+++ 25-akpm/fs/fuse/dev.c Fri Mar 4 15:34:45 2005
@@ -121,12 +121,11 @@ struct fuse_req *fuse_get_request_nonint
static void fuse_putback_request(struct fuse_conn *fc, struct fuse_req *req)
{
- if (!req->preallocated)
- fuse_request_free(req);
-
spin_lock(&fuse_lock);
if (req->preallocated)
list_add(&req->list, &fc->unused_list);
+ else
+ fuse_request_free(req);
if (fc->outstanding_debt)
fc->outstanding_debt--;
_