Re: [PATCH] objtool: Fix NULL printf() '%s' argument
From: Ingo Molnar
Date: Wed Mar 26 2025 - 03:26:11 EST
* Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> Hi Josh,
>
> On Tue, 25 Mar 2025 18:30:37 -0700 Josh Poimboeuf <jpoimboe@xxxxxxxxxx> wrote:
> >
> > It's probably not the best idea to pass a string pointer to printf()
> > right after confirming said pointer is NULL. Fix the typo and use
> > argv[i] instead.
> >
> > Fixes: c5995abe1547 ("objtool: Improve error handling")
> > Closes: https://lore.kernel.org/20250326103854.309e3c60@xxxxxxxxxxxxxxxx
> > Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> > Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
> > ---
> > tools/objtool/builtin-check.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c
> > index 2bdff910430e..e364ab6345d3 100644
> > --- a/tools/objtool/builtin-check.c
> > +++ b/tools/objtool/builtin-check.c
> > @@ -238,7 +238,7 @@ static void save_argv(int argc, const char **argv)
> > for (int i = 0; i < argc; i++) {
> > orig_argv[i] = strdup(argv[i]);
> > if (!orig_argv[i]) {
> > - WARN_GLIBC("strdup(%s)", orig_argv[i]);
> > + WARN_GLIBC("strdup(%s)", argv[i]);
> > exit(1);
> > }
> > };
> > --
> > 2.48.1
> >
>
> Thanks. I have applied this to the merge of the tip tree (which
> include the tip-fixes tree) in linux-next today. It fixes the build
> failure for me. I will apply it to the merge of the tip-fixes tree
> tomorrow unless it has already been applied by then.
Thanks, I've re-spun tip/urgent, so the next -next iteration ought to
pick up the fix.
Ingo