qcacld-3.0: Validate adapter magic during bus bandwidth check
qcacld-2.0 to qcacld-3.0 propagation.
hdd_bus_bw_compute_cbk function is responsible for computing
bus bandwidth by checking TX/RX stats per HDD adapter after
taking them from adapter list. However, it's scheduled on a global
timer so the following scenario can arise:
1)At time of scheduling, HDD adapter is valid and is passed.
2)During TX/RX stats check, HDD adapter is freed as a result
of interface down.
3)Null hddCtx from adapter is accessed as a result and kernel
panic occurs.
Thus,validate adapter magic before accessing the hddCtx stored
in adapter.
Change-Id: If076e122db0538d01140e16305f046e68a86212a
CRs-fixed: 1045004
(cherry picked from commit 27254744c270a98d15bb17e2ed48649450070385)
1 file changed