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(parent: 7642ad4) | patch
tipc: add NULL pointer check to prevent kernel oops
authorHoang Le <hoang.h.le@dektech.com.au>
Fri, 13 Mar 2020 03:18:03 +0000 (10:18 +0700)
committerDavid S. Miller <davem@davemloft.net>
Sun, 15 Mar 2020 07:07:00 +0000 (00:07 -0700)
commit347635cbb8216594c93480ee3b421494f0b9934e
tree2cbd7efd493149d7403b5eb8ce615ec63b6c38cftree | snapshot
parent7642ad4862164f1a58fc3cdfce2701a4cd74499ecommit | diff
tipc: add NULL pointer check to prevent kernel oops

Calling:
tipc_node_link_down()->
   - tipc_node_write_unlock()->tipc_mon_peer_down()
   - tipc_mon_peer_down()
  just after disabling bearer could be caused kernel oops.

Fix this by adding a sanity check to make sure valid memory
access.

Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/tipc/monitor.c diff | blob | history
Linux Kernel Source Tree.