Messages in this thread | | | From | Zheng Hacker <> | Date | Wed, 19 Apr 2023 13:29:15 +0800 | Subject | Re: [PATCH] misc: hpilo: Fix use after free bug in ilo_remove due to race condition with ilo_open |
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Greg KH <gregkh@linuxfoundation.org> 于2023年4月18日周二 01:43写道: > > On Tue, Apr 18, 2023 at 12:52:46AM +0800, Zheng Wang wrote: > > --- a/drivers/misc/hpilo.h > > +++ b/drivers/misc/hpilo.h > > @@ -62,6 +62,7 @@ struct ilo_hwinfo { > > spinlock_t fifo_lock; > > > > struct cdev cdev; > > + struct kref refcnt; > > You now have 2 different structures doing reference counting logic on > the same structure. That's just not ok at all, and is totally broken. >
Thanks for your reply. I'll look into it and figure out effective fix.
Best regards, Zheng
> greg k-h
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