diff options
| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2022-02-04 17:22:28 -0600 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2022-02-10 10:46:20 +0200 |
| commit | f3c04fffe2717878d032a275f16d1e397402da10 (patch) | |
| tree | 28ccc62339c9a9a3490ac0173c101b703cead510 /drivers/net | |
| parent | 28e7ea8a3128a5626dee12a63ca8e8f8e6786608 (diff) | |
brcmfmac: p2p: Replace one-element arrays with flexible-array members
There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].
This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().
This issue was found with the help of Coccinelle and audited and fixed,
manually.
[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays
Link: https://github.com/KSPP/linux/issues/79
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220204232228.GA442895@embeddedor
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c index 4735063e4c03..d3f08d4f380b 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c @@ -158,7 +158,7 @@ struct brcmf_p2p_pub_act_frame { u8 oui_type; u8 subtype; u8 dialog_token; - u8 elts[1]; + u8 elts[]; }; /** @@ -177,7 +177,7 @@ struct brcmf_p2p_action_frame { u8 type; u8 subtype; u8 dialog_token; - u8 elts[1]; + u8 elts[]; }; /** @@ -192,7 +192,7 @@ struct brcmf_p2psd_gas_pub_act_frame { u8 category; u8 action; u8 dialog_token; - u8 query_data[1]; + u8 query_data[]; }; /** @@ -225,7 +225,7 @@ static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len) return false; pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; - if (frame_len < sizeof(struct brcmf_p2p_pub_act_frame) - 1) + if (frame_len < sizeof(*pact_frm)) return false; if (pact_frm->category == P2P_PUB_AF_CATEGORY && @@ -253,7 +253,7 @@ static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len) return false; act_frm = (struct brcmf_p2p_action_frame *)frame; - if (frame_len < sizeof(struct brcmf_p2p_action_frame) - 1) + if (frame_len < sizeof(*act_frm)) return false; if (act_frm->category == P2P_AF_CATEGORY && @@ -280,7 +280,7 @@ static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len) return false; sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; - if (frame_len < sizeof(struct brcmf_p2psd_gas_pub_act_frame) - 1) + if (frame_len < sizeof(*sd_act_frm)) return false; if (sd_act_frm->category != P2PSD_ACTION_CATEGORY) |