[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 13/17 v5] xen/arm: vpl011: Modify xenconsole to support multiple consoles
On Fri, Jul 07, 2017 at 07:22:14PM +0530, Bhupinder Thakur wrote: > >> -static struct domain *create_domain(int domid) > >> +static int console_init(struct console *con, struct domain *dom, void > >> **data) > >> { > >> - struct domain *dom; > >> char *s; > >> + int err = -1; > >> struct timespec ts; > >> - struct console *con; > >> + struct console_data **con_data = (struct console_data **)data; > >> + char *xsname; > >> > >> if (clock_gettime(CLOCK_MONOTONIC, &ts) < 0) { > >> dolog(LOG_ERR, "Cannot get time of day %s:%s:L%d", > >> __FILE__, __FUNCTION__, __LINE__); > >> - return NULL; > >> + return err; > >> + } > >> + > > > > There is a danger that you return at this point, the cleanup path in > > caller will free garbage. > > > > I suggest you at least initialise all pointers to NULL at the beginning. > > > I am checking that the pointer is not null before freeing them. > I'm not sure what your reply means. Without initialising the pointers to NULL you can have garbage in your pointer (currently only xspath) -- you end up freeing the garbage pointer. That's why I made the suggestion in the first place. Checking NULL isn't going to help that. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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