From: Luciano Coelho <luciano.coelho@intel.com>
To: Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org,
Johannes Berg <johannes.berg@intel.com>,
Emmanuel Grumbach <emmanuel.grumbach@intel.com>,
Intel Linux Wireless <linuxwifi@intel.com>,
Kalle Valo <kvalo@codeaurora.org>,
"David S. Miller" <davem@davemloft.net>,
Sara Sharon <sara.sharon@intel.com>
Cc: Andrei Otcheretianski <andrei.otcheretianski@intel.com>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH 02/15] iwlwifi: mvm: fix gcc-10 zero-length-bounds warning
Date: Wed, 10 Jun 2020 15:18:52 +0300 [thread overview]
Message-ID: <1cbbb0dab91cad4ecf76cb6ca92f3c3bfe6ee5f7.camel@intel.com> (raw)
In-Reply-To: <20200430213101.135134-3-arnd@arndb.de>
On Thu, 2020-04-30 at 23:30 +0200, Arnd Bergmann wrote:
> gcc-10 complains when a zero-length array is accessed:
>
> drivers/net/wireless/intel/iwlwifi/mvm/tx.c: In function 'iwl_mvm_rx_ba_notif':
> drivers/net/wireless/intel/iwlwifi/mvm/tx.c:1929:17: warning: array subscript 9 is outside the bounds of an interior zero-length array 'struct iwl_mvm_compressed_ba_tfd[0]' [-Wzero-length-bounds]
> 1929 | &ba_res->tfd[i];
> | ~~~~~~~~~~~^~~
> In file included from drivers/net/wireless/intel/iwlwifi/mvm/../fw/api/tdls.h:68,
> from drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h:68,
> from drivers/net/wireless/intel/iwlwifi/mvm/sta.h:73,
> from drivers/net/wireless/intel/iwlwifi/mvm/mvm.h:83,
> from drivers/net/wireless/intel/iwlwifi/mvm/tx.c:72:
> drivers/net/wireless/intel/iwlwifi/mvm/../fw/api/tx.h:769:35: note: while referencing 'tfd'
> 769 | struct iwl_mvm_compressed_ba_tfd tfd[0];
> | ^~~
>
> Change this structure to use a flexible-array member for 'tfd' instead,
> along with the various structures using an zero-length ieee80211_hdr
> array that do not show warnings today but might be affected by similar
> issues in the future.
>
> Fixes: 6f68cc367ab6 ("iwlwifi: api: annotate compressed BA notif array sizes")
> Fixes: c46e7724bfe9 ("iwlwifi: mvm: support new BA notification response")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Patch applied to iwlwifi-next.git, thanks.
9cec1d547cb7 iwlwifi: mvm: fix gcc-10 zero-length-bounds warning
next prev parent reply other threads:[~2020-06-10 12:19 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-30 21:30 [PATCH 00/15] gcc-10 warning fixes Arnd Bergmann
2020-04-30 21:30 ` [PATCH 01/15] crypto - Avoid free() namespace collision Arnd Bergmann
2020-05-08 6:06 ` Herbert Xu
2020-04-30 21:30 ` [PATCH 02/15] iwlwifi: mvm: fix gcc-10 zero-length-bounds warning Arnd Bergmann
2020-06-10 12:18 ` Luciano Coelho [this message]
2020-04-30 21:30 ` [PATCH 03/15] mwifiex: avoid -Wstringop-overflow warning Arnd Bergmann
2020-05-06 8:43 ` Kalle Valo
2020-04-30 21:30 ` [PATCH 04/15] ath10k: fix gcc-10 zero-length-bounds warnings Arnd Bergmann
2020-04-30 21:45 ` Gustavo A. R. Silva
2020-04-30 21:44 ` Arnd Bergmann
2020-05-04 11:54 ` Kalle Valo
2020-05-04 16:09 ` Gustavo A. R. Silva
2020-05-05 4:56 ` Kalle Valo
2020-04-30 21:30 ` [PATCH 05/15] bpf: avoid gcc-10 stringop-overflow warning Arnd Bergmann
2020-05-04 21:06 ` Daniel Borkmann
2020-04-30 21:30 ` [PATCH 06/15] netfilter: conntrack: avoid gcc-10 zero-length-bounds warning Arnd Bergmann
2020-05-10 21:48 ` Pablo Neira Ayuso
2020-04-30 21:30 ` [PATCH 07/15] drop_monitor: work around gcc-10 stringop-overflow warning Arnd Bergmann
2020-05-01 11:28 ` Neil Horman
2020-04-30 21:30 ` [PATCH 08/15] usb: ehci: avoid gcc-10 zero-length-bounds warning Arnd Bergmann
2020-05-01 2:42 ` Alan Stern
2020-05-01 20:06 ` Arnd Bergmann
2020-05-01 20:10 ` Alan Stern
2020-04-30 21:30 ` [PATCH 09/15] udf: avoid gcc-10 zero-length-bounds warnings Arnd Bergmann
2020-04-30 21:54 ` Pali Rohár
2020-05-01 20:30 ` Arnd Bergmann
2020-05-01 20:48 ` Jan Kara
2020-05-01 20:57 ` Pali Rohár
2020-04-30 21:30 ` [PATCH 10/15] hpfs: avoid gcc-10 zero-length-bounds warning Arnd Bergmann
2020-04-30 21:30 ` [PATCH 11/15] omfs: avoid gcc-10 stringop-overflow warning Arnd Bergmann
2020-04-30 21:30 ` [PATCH 12/15] media: s5k5baf: avoid gcc-10 zero-length-bounds warning Arnd Bergmann
2020-04-30 21:46 ` Gustavo A. R. Silva
2020-04-30 21:30 ` [PATCH 13/15] scsi: sas: " Arnd Bergmann
2020-05-01 7:47 ` John Garry
2020-05-01 7:54 ` Arnd Bergmann
2020-05-01 14:53 ` James Bottomley
2020-05-01 17:36 ` Arnd Bergmann
2020-04-30 21:30 ` [PATCH 14/15] isci: " Arnd Bergmann
2020-04-30 21:30 ` [PATCH 15/15] nvme: " Arnd Bergmann
2020-05-01 7:32 ` Christoph Hellwig
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