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Message-ID: <20231015172710.GA223096@unreal> Date: Sun, 15 Oct 2023 20:27:10 +0300 From: Leon Romanovsky <leon@...nel.org> To: Sven Auhagen <sven.auhagen@...eatech.de> Cc: netdev@...r.kernel.org, thomas.petazzoni@...tlin.com, brouer@...hat.com, lorenzo@...nel.org, Paulo.DaSilva@...erna.com, ilias.apalodimas@...aro.org, mcroce@...rosoft.com Subject: Re: [PATCH v3 1/2] net: page_pool: check page pool ethtool stats On Sun, Oct 15, 2023 at 02:37:27PM +0200, Sven Auhagen wrote: > If the page_pool variable is null while passing it to > the page_pool_get_stats function we receive a kernel error. > > Check if the page_pool variable is at least valid. > > Signed-off-by: Sven Auhagen <sven.auhagen@...eatech.de> > Reported-by: Paulo Da Silva <Paulo.DaSilva@...erna.com> > --- > net/core/page_pool.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/net/core/page_pool.c b/net/core/page_pool.c > index 2396c99bedea..4c5dca6b4a16 100644 > --- a/net/core/page_pool.c > +++ b/net/core/page_pool.c > @@ -65,6 +65,9 @@ bool page_pool_get_stats(struct page_pool *pool, > if (!stats) > return false; > > + if (!pool) > + return false; > + I would argue that both pool and stats shouldn't be NULL and must be checked by caller. This API call named get-stats-from-pool. Thanks > /* The caller is responsible to initialize stats. */ > stats->alloc_stats.fast += pool->alloc_stats.fast; > stats->alloc_stats.slow += pool->alloc_stats.slow; > -- > 2.42.0 > >
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