Re: [PATCH] clk: renesas: fix a double free on error

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On Thu, Jun 17, 2021 at 03:45:50PM +0200, Geert Uytterhoeven wrote:
> Hi Dan,
> 
> On Thu, Jun 17, 2021 at 3:38 PM Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:
> > The "clock" pointer is allocated with devm_kzalloc() so freeing it
> > here will lead to a double free.
> >
> > Fixes: ef3c613ccd68 ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
> > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> 
> Thanks for your patch!
> 
> While the double free is unlikely to happen (the error is not
> propagated upstream, and the driver cannot be unloaded), kernel
> test robot reported two of these errors.  The other one is at line 202.
> Care to fix that as well?

Yeah, sure.  I'll clean up the NULL vs error pointer mixing as well.

regards,
dan carpenter




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