llc: fix NULL pointer deref for SOCK_ZAPPED

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commit 3a04ce7130 upstream.

For SOCK_ZAPPED socket, we don't need to care about llc->sap,
so we should just skip these refcount functions in this case.

Fixes: f7e4367268 ("llc: hold llc_sap before release_sock()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Cong Wang 2018-04-19 21:54:34 -07:00 • committed by Ben Hutchings

parent 6d96b4112e

commit abf605c781

1 changed files with 12 additions and 9 deletions

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net/llc/af_llc.c

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