[PATCH] ath10k: fixed scan crash

[Kalle Valo]

zhichen at codeaurora.org writes:

> From: Zhi Chen <zhichen at codeaurora.org>
>
> Length of WMI scan message was not calculated correctly. The allocated
> buffer was smaller than what we expected. So WMI message corrupted
> skb_info, which is at the end of skb->data. This fix takes TLV header
> into account even if the element is zero-length.
> Crash log:
>   [49.629986] Unhandled kernel unaligned access[#1]:
>   [49.634932] CPU: 0 PID: 1176 Comm: logd Not tainted 4.4.60 #180
>   [49.641040] task: 83051460 ti: 8329c000 task.ti: 8329c000
>   [49.646608] $ 0   : 00000000 00000001 80984a80 00000000
>   [49.652038] $ 4   : 45259e89 8046d484 8046df30 8024ba70
>   [49.657468] $ 8   : 00000000 804cc4c0 00000001 20306320
>   [49.662898] $12   : 33322037 000110f2 00000000 31203930
>   [49.668327] $16   : 82792b40 80984a80 00000001 804207fc
>   [49.673757] $20   : 00000000 0000012c 00000040 80470000
>   [49.679186] $24   : 00000000 8024af7c
>   [49.684617] $28   : 8329c000 8329db88 00000001 802c58d0
>   [49.690046] Hi    : 00000000
>   [49.693022] Lo    : 453c0000
>   [49.696013] epc   : 800efae4 put_page+0x0/0x58
>   [49.700615] ra    : 802c58d0 skb_release_data+0x148/0x1d4
>   [49.706184] Status: 1000fc03 KERNEL EXL IE
>   [49.710531] Cause : 00800010 (ExcCode 04)
>   [49.714669] BadVA : 45259e89
>   [49.717644] PrId  : 00019374 (MIPS 24Kc)
>
> Signed-off-by: Zhi Chen <zhichen at codeaurora.org>

Your name in patchwork is wrong and hence my script uses the wrong
name. Please fix it by registering to patchwork[1] where it's possible
to change your name during registration, but only one time. If that
doesn't work then send a request to helpdesk at kernel.org and the admins
can fix it.

[1] https://patchwork.kernel.org/register/

-- 
Kalle Valo