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Date: Sat, 4 Dec 2021 18:13:49 +0100
From: José Expósito <jose.exposito89@...il.com>
To: tchornyi@...vell.com
Cc: davem@...emloft.net,
kuba@...nel.org,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-hardening@...r.kernel.org,
kernel-hardening@...ts.openwall.com,
gustavoars@...nel.org,
José Expósito <jose.exposito89@...il.com>
Subject: [PATCH] net: prestera: replace zero-length array with flexible-array member
One-element and zero-length arrays are deprecated and should be
replaced with flexible-array members:
https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays
Replace zero-length array with flexible-array member and make use
of the struct_size() helper.
Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: José Expósito <jose.exposito89@...il.com>
---
drivers/net/ethernet/marvell/prestera/prestera_hw.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
index 92cb5e9099c6..6282c9822e2b 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
@@ -443,7 +443,7 @@ struct prestera_msg_counter_resp {
__le32 offset;
__le32 num_counters;
__le32 done;
- struct prestera_msg_counter_stats stats[0];
+ struct prestera_msg_counter_stats stats[];
};
struct prestera_msg_span_req {
@@ -1900,7 +1900,7 @@ int prestera_hw_counters_get(struct prestera_switch *sw, u32 idx,
.block_id = __cpu_to_le32(idx),
.num_counters = __cpu_to_le32(*len),
};
- size_t size = sizeof(*resp) + sizeof(*resp->stats) * (*len);
+ size_t size = struct_size(resp, stats, *len);
int err, i;
resp = kmalloc(size, GFP_KERNEL);
--
2.25.1
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