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| author |   Miklos Szeredi <mszeredi@redhat.com> | 2019-01-16 10:27:59 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2019-01-16 10:27:59 +0100 |
| commit | 8a3177db59cd644fde05ba9efee29392dfdec8aa (patch) | |
| tree | a2fce5ca68a25d62023b433910ca7f36fa9d4b3f /fs/fuse | |
| parent | fuse: handle zero sized retrieve correctly (diff) | |
| download | linux-dev-8a3177db59cd644fde05ba9efee29392dfdec8aa.tar.xz linux-dev-8a3177db59cd644fde05ba9efee29392dfdec8aa.zip | |
cuse: fix ioctl
cuse_process_init_reply() doesn't initialize fc->max_pages and thus all
cuse bases ioctls fail with ENOMEM.
Reported-by: Andreas Steinmetz <ast@domdv.de>
Fixes: 5da784cce430 ("fuse: add max_pages to init_out")
Cc: <stable@vger.kernel.org> # v4.20
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse')
| -rw-r--r-- | fs/fuse/inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 76baaa6be393..c2d4099429be 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -628,6 +628,7 @@ void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns) get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key)); fc->pid_ns = get_pid_ns(task_active_pid_ns(current)); fc->user_ns = get_user_ns(user_ns); + fc->max_pages = FUSE_DEFAULT_MAX_PAGES_PER_REQ; } EXPORT_SYMBOL_GPL(fuse_conn_init); @@ -1162,7 +1163,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) fc->user_id = d.user_id; fc->group_id = d.group_id; fc->max_read = max_t(unsigned, 4096, d.max_read); - fc->max_pages = FUSE_DEFAULT_MAX_PAGES_PER_REQ; /* Used by get_root_inode() */ sb->s_fs_info = fc; |