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| author | Elena Reshetova <elena.reshetova@intel.com> | 2017-03-03 12:04:03 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-04-18 17:58:37 +0300 |
| commit | 4e8c2eb54327a6f8b0ef6d6afb28ab24b721dbe0 (patch) | |
| tree | 2d5899fded4f7a002cc8ca492fa1742453f946c0 /fs/fuse/fuse_i.h | |
| parent | c1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201 (diff) | |
| download | linux-4e8c2eb54327a6f8b0ef6d6afb28ab24b721dbe0.tar.xz | |
fuse: convert fuse_file.count from atomic_t to refcount_t
refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 32ac2c9b09c0..1d6d67e64f49 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -24,6 +24,7 @@ #include <linux/workqueue.h> #include <linux/kref.h> #include <linux/xattr.h> +#include <linux/refcount.h> /** Max number of pages that can be used in a single read request */ #define FUSE_MAX_PAGES_PER_REQ 32 @@ -137,7 +138,7 @@ struct fuse_file { u64 nodeid; /** Refcount */ - atomic_t count; + refcount_t count; /** FOPEN_* flags returned by open */ u32 open_flags; |