2023-10-17 08:47:47

by Michael Walle

[permalink] [raw]
Subject: Re: [PATCH v3] wifi: wilc1000: use vmm_table as array in wilc struct

Am 2023-10-17 10:43, schrieb Alexis Lothoré:
> From: Ajay Singh <[email protected]>
>
> Enabling KASAN and running some iperf tests raises some memory issues
> with
> vmm_table:
>
> BUG: KASAN: slab-out-of-bounds in wilc_wlan_handle_txq+0x6ac/0xdb4
> Write of size 4 at addr c3a61540 by task wlan0-tx/95
>
> KASAN detects that we are writing data beyond range allocated to
> vmm_table.
> There is indeed a mismatch between the size passed to allocator in
> wilc_wlan_init, and the range of possible indexes used later:
> allocation
> size is missing a multiplication by sizeof(u32)
>
> Fixes: 40b717bfcefa ("wifi: wilc1000: fix DMA on stack objects")
> Cc: [email protected]
> Signed-off-by: Ajay Singh <[email protected]>
> Signed-off-by: Alexis LothorĂ© <[email protected]>

Reviewed-by: Michael Walle <[email protected]>