01327cc3ec6c96bd9bc3f6d8d6e898feb2cb3de7

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)
This is CNSS WLAN Host Driver for products starting from iHelium
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