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| author | Al Viro <viro@zeniv.linux.org.uk> | 2018-01-10 18:47:05 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2018-01-10 18:47:05 -0500 |
| commit | ce4bb04cae8924792ed92f4af2793b77fc986f0e (patch) | |
| tree | f7869235c4c02ef8314231e1a87fcaf3279d6fdf /net | |
| parent | 040ee69226f8a96b7943645d68f41d5d44b5ff7d (diff) | |
| download | linux-ce4bb04cae8924792ed92f4af2793b77fc986f0e.tar.gz linux-ce4bb04cae8924792ed92f4af2793b77fc986f0e.tar.bz2 linux-ce4bb04cae8924792ed92f4af2793b77fc986f0e.zip | |
Fix a leak in socket(2) when we fail to allocate a file descriptor.
Got broken by "make sock_alloc_file() do sock_release() on failures" -
cleanup after sock_map_fd() failure got pulled all the way into
sock_alloc_file(), but it used to serve the case when sock_map_fd()
failed *before* getting to sock_alloc_file() as well, and that got
lost. Trivial to fix, fortunately.
Fixes: 8e1611e23579 (make sock_alloc_file() do sock_release() on failures)
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net')
| -rw-r--r-- | net/socket.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/socket.c b/net/socket.c index 42d8e9c9ccd5..82433a2200ec 100644 --- a/net/socket.c +++ b/net/socket.c @@ -432,8 +432,10 @@ static int sock_map_fd(struct socket *sock, int flags) { struct file *newfile; int fd = get_unused_fd_flags(flags); - if (unlikely(fd < 0)) + if (unlikely(fd < 0)) { + sock_release(sock); return fd; + } newfile = sock_alloc_file(sock, flags, NULL); if (likely(!IS_ERR(newfile))) { |