On 1/26/24 22:47, Ahelenia Ziemiańska wrote:
[ 41.314634] memcpy: detected field-spanning write (size 101) of single field "ext_scan->tlv_buffer" at drivers/net/wireless/marvell/mwifiex/scan.c:2251 (size 1)
Short answer: if your device works as expected, most likely you can ignore this. Long answer: this is caused by using CONFIG_FORTIFY_SOURCE with old style one-element (in this particular case) or zero-length array members. See "Zero-length and one-element arrays" at https://www.kernel.org/doc/html/latest/process/deprecated.html. Unfortunately mwifiex is not completely migrated to C99-style flexible array members; if you're brave enough, you can help the maintainers by trying this: --- linux-6.6.11/drivers/net/wireless/marvell/mwifiex/fw.h 2024-01-10 19:17:02.000000000 +0300 +++ linux-6.6.11/drivers/net/wireless/marvell/mwifiex/fw.h 2024-01-29 14:21:55.574280719 +0300 @@ -1586,7 +1586,7 @@ struct host_cmd_ds_802_11_scan_ext { u32 reserved; - u8 tlv_buffer[1]; + u8 tlv_buffer[]; } __packed; struct mwifiex_ie_types_bss_mode { Dmitry
