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authorKees Cook <keescook@chromium.org>2023-08-17 14:15:24 -0700
committerJohannes Berg <johannes.berg@intel.com>2023-08-22 13:18:16 +0200
commitd4d3aaf25a6600d58774978cea9068974a8ea674 (patch)
tree884f1b01f542ef989f30f58e2c9ed35c0c78ed49 /net/wireless
parent93ca82447c3eab149b5b2588ab8bd9aa2eacef7c (diff)
wifi: cfg80211: Annotate struct cfg80211_cqm_config with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct cfg80211_cqm_config. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Johannes Berg <johannes@sipsolutions.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20230817211531.4193219-2-keescook@chromium.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/core.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 8a807b609ef7..507d184b8b40 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -298,7 +298,7 @@ struct cfg80211_cqm_config {
u32 rssi_hyst;
s32 last_rssi_event_value;
int n_rssi_thresholds;
- s32 rssi_thresholds[];
+ s32 rssi_thresholds[] __counted_by(n_rssi_thresholds);
};
void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);