Messages in this thread | | | Date | Sat, 3 Sep 2022 08:33:50 +0200 | From | Greg KH <> | Subject | Re: [PATCH v1] drivers/base/auxiliary: check return value of strrchr() |
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On Fri, Sep 02, 2022 at 11:25:31PM -0700, Li Zhong wrote: > From: Li Zhong <floridsleeves@gmail.com> > > The return value of strrchr() could be NULL, which will cause invalid > offset in (int)(p - name). So we check it here. > > Signed-off-by: Li Zhong <floridsleeves@gmail.com> > --- > drivers/base/auxiliary.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/base/auxiliary.c b/drivers/base/auxiliary.c > index 8c5e65930617..7ac23be47e1f 100644 > --- a/drivers/base/auxiliary.c > +++ b/drivers/base/auxiliary.c > @@ -191,7 +191,8 @@ static int auxiliary_uevent(struct device *dev, > struct kobj_uevent_env *env) > > name = dev_name(dev); > p = strrchr(name, '.'); > - > + if (!p) > + return -EINVAL; > return add_uevent_var(env, "MODALIAS=%s%.*s", AUXILIARY_MODULE_PREFIX, > (int)(p - name), name); > } > -- > 2.25.1
Hi,
This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him a patch that has triggered this response. He used to manually respond to these common problems, but in order to save his sanity (he kept writing the same thing over and over, yet to different people), I was created. Hopefully you will not take offence and will fix the problem in your patch and resubmit it so that it can be accepted into the Linux kernel tree.
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greg k-h's patch email bot
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