qcacld-3.0: Fix peer use after free in ol_txrx_clear_peer
When DUT P2P Go/SAP deauth ref STA, in race condition, scheduler
thread may try to clear peer data and drop pending rx packets
after peer freed in peer unmap handler in soft irq context,
use after free issue will happen.
Error log:
BUG: spinlock bad magic on CPU#1, scheduler_threa/28550
Unable to handle kernel paging request at virtual address
6b6b6b6b6b715b
Stackframe:
do_raw_spin_lock+0x34/0x154
_raw_spin_lock_bh+0x24/0x30
ol_txrx_clear_peer_internal+0x68/0xb0 [wlan]
ol_txrx_clear_peer+0x78/0xa0 [wlan]
hdd_softap_deregister_sta+0xd0/0x200 [wlan]
hdd_hostapd_sap_event_cb+0xca8/0x20b8 [wlan]
Change-Id: Ib8d133528f5ff22125218861206d241f96eaf0da
CRs-Fixed: 2247334
1 file changed