On Tue, Jun 30, 2020 at 05:06:31PM +0530, Sumit Garg wrote: > On Tue, 30 Jun 2020 at 14:00, Cengiz Can <cen...@kernel.wtf> wrote: > > > > `kdb_msg_write` operates on a global `struct kgdb_io *` called > > `dbg_io_ops`. > > > > It's initialized in `debug_core.c` and checked throughout the debug > > flow. > > > > There's a null check in `kdb_msg_write` which triggers static analyzers > > and gives the (almost entirely wrong) impression that it can be null. > > > > Coverity scanner caught this as CID 1465042. > > > > I have removed the unnecessary null check and eliminated false-positive > > forward null dereference warning.
> > - while (len--) { > > - dbg_io_ops->write_char(*cp); > > - cp++; > > - } > > + while (len--) { > > + dbg_io_ops->write_char(*cp); > > + cp++; > > } Despite being in the original code this can be simple done in two lines: while (len--) dbg_io_ops->write_char(*cp++); -- With Best Regards, Andy Shevchenko