| commit | e825196d48d2b89a6ec3a8eff280098d2a78207e | [log] [tgz] |
|---|---|---|
| author | Al Viro <viro@zeniv.linux.org.uk> | Sun Mar 23 00:28:40 2014 -0400 |
| committer | Al Viro <viro@zeniv.linux.org.uk> | Sun Mar 23 00:28:40 2014 -0400 |
| tree | 719a3ab8be442c786a9d5b02276ad8aaf989075a | |
| parent | 99aea68134f3c2a27b4d463c91cfa298c3efaccf [diff] |
make prepend_name() work correctly when called with negative *buflen In all callchains leading to prepend_name(), the value left in *buflen is eventually discarded unused if prepend_name() has returned a negative. So we are free to do what prepend() does, and subtract from *buflen *before* checking for underflow (which turns into checking the sign of subtraction result, of course). Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>