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| author | Miklos Szeredi <mszeredi@suse.cz> | 2014-01-22 22:36:57 +0400 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2014-01-22 22:36:57 +0400 |
| commit | 28a625cbc2a14f17b83e47ef907b2658576a32aa (patch) | |
| tree | 58d461b91f25a6499bd6404cd79faa4f9c185ff0 /include | |
| parent | d8ec26d7f8287f5788a494f56e8814210f0e64be (diff) | |
| download | linux-28a625cbc2a14f17b83e47ef907b2658576a32aa.tar.xz | |
fuse: fix pipe_buf_operations
Having this struct in module memory could Oops when if the module is
unloaded while the buffer still persists in a pipe.
Since sock_pipe_buf_ops is essentially the same as fuse_dev_pipe_buf_steal
merge them into nosteal_pipe_buf_ops (this is the same as
default_pipe_buf_ops except stealing the page from the buffer is not
allowed).
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: stable@vger.kernel.org
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pipe_fs_i.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index b8809fef61f5..ab5752692113 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -157,6 +157,8 @@ int generic_pipe_buf_confirm(struct pipe_inode_info *, struct pipe_buffer *); int generic_pipe_buf_steal(struct pipe_inode_info *, struct pipe_buffer *); void generic_pipe_buf_release(struct pipe_inode_info *, struct pipe_buffer *); +extern const struct pipe_buf_operations nosteal_pipe_buf_ops; + /* for F_SETPIPE_SZ and F_GETPIPE_SZ */ long pipe_fcntl(struct file *, unsigned int, unsigned long arg); struct pipe_inode_info *get_pipe_info(struct file *file); |