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https://github.com/outbackdingo/mt76.git
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Sean WangandFelix Fietkau
96b4c9874e
fix possible uninitialized pointer access in mt7921_get_wtbl_info routine [ 270.073205] wlp1s0: deauthenticating from 9c:5c:8e:c9:93:14 by local choice (Reason: 3=DEAUTH_LEAVING) [ 270.094918] 8<--- cut here --- [ 270.097988] Unable to handle kernel NULL pointer dereference at virtual address 0000000a [ 270.106120] pgd = 7ac68838 [ 270.108842] [0000000a] *pgd=00000000 [ 270.112426] Internal error: Oops: 805 [#1] SMP ARM [ 270.117216] Modules linked in: mt7921e mt76_connac_lib mt76 [ 270.122803] CPU: 0 PID: 7 Comm: kworker/u8:0 Tainted: G W 5.11.0-rc2+ #67 [ 270.130891] Hardware name: Mediatek Cortex-A7 (Device Tree) [ 270.136459] Workqueue: phy0 mt7921_mac_work [mt7921e] [ 270.141557] PC is at mt7921_get_wtbl_info+0x224/0x2d8 [mt7921e] [ 270.147498] LR is at 0x0 [ 270.150026] pc : [<bf030398>] lr : [<00000000>] psr: 60000013 ... [ 270.317696] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 270.325869] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [ 270.334043] [<bf030398>] (mt7921_get_wtbl_info [mt7921e]) from [<bf02ea9c>] (mt7921_mac_work+0x298/0x2c0 [mt7921e]) [ 270.344529] [<bf02ea9c>] (mt7921_mac_work [mt7921e]) from [<c013cde8>] (process_one_work+0x1f0/0x538) [ 270.353780] [<c013cde8>] (process_one_work) from [<c013d17c>] (worker_thread+0x4c/0x55c) [ 270.361874] [<c013d17c>] (worker_thread) from [<c01447a8>] (kthread+0x124/0x150) [ 270.369275] [<c01447a8>] (kthread) from [<c0100150>] (ret_from_fork+0x14/0x24) [ 270.376501] Exception stack(0xc19c7fb0 to 0xc19c7ff8) [ 270.381550] 7fa0: 00000000 00000000 00000000 00000000 [ 270.389724] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 270.397896] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 270.404509] Code: e59de012 e1cdc1b6 e1cdc1b8 e59dc016 (e582e00a) Fixes: 1c099ab44727c ("mt76: mt7921: add MCU support") Signed-off-by: Sean Wang <[email protected]> Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>