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Date: Sun, 21 Jul 2019 11:50:31 -0700 (PDT) From: David Miller <davem@...emloft.net> To: vladbu@...lanox.com Cc: netdev@...r.kernel.org, jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us Subject: Re: [PATCH net-next] net: sched: verify that q!=NULL before setting q->flags From: Vlad Buslov <vladbu@...lanox.com> Date: Sun, 21 Jul 2019 17:44:12 +0300 > In function int tc_new_tfilter() q pointer can be NULL when adding filter > on a shared block. With recent change that resets TCQ_F_CAN_BYPASS after > filter creation, following NULL pointer dereference happens in case parent > block is shared: ... > Verify that q pointer is not NULL before setting the 'flags' field. > > Fixes: 3f05e6886a59 ("net_sched: unset TCQ_F_CAN_BYPASS when adding filters") > Signed-off-by: Vlad Buslov <vladbu@...lanox.com> Applied.
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