mqprio: fix potential null pointer dereference on opt

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The pointer opt has a null check however before for this check opt is
dereferenced when len is initialized, hence we potentially have a null
pointer deference on opt.  Avoid this by checking for a null opt before
dereferencing it.

Detected by CoverityScan, CID#1458234 ("Dereference before null check")

Fixes: 4e8b86c062 ("mqprio: Introduce new hardware offload mode and shaper in mqprio")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Colin Ian King 2017-10-17 16:01:30 +01:00 • committed by David S. Miller

parent fa31f0c98d

commit 22ce97fe49

1 changed files with 2 additions and 1 deletions

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net/sched/sch_mqprio.c

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