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Thu, 06 Nov 2025 10:07:00 +0000 Date: Thu, 06 Nov 2025 11:07:00 +0100 Message-ID: <87346rh3uj.wl-tiwai@suse.de> From: Takashi Iwai To: wangdich9700@163.com Cc: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, linux-arm-kernel@lists.infradead.org, wangdicheng Subject: Re: [PATCH] ALSA: au88x0: Fix array bounds warning in EQ drivers In-Reply-To: <20251106063339.114596-1-wangdich9700@163.com> References: <20251106063339.114596-1-wangdich9700@163.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.2 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=ISO-8859-7 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 15B9E21192 X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spamd-Result: default: False [-3.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FREEMAIL_TO(0.00)[163.com]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; FREEMAIL_ENVRCPT(0.00)[163.com,gmail.com]; FREEMAIL_CC(0.00)[gmail.com,kernel.org,perex.cz,suse.com,vger.kernel.org,lists.infradead.org,kylinos.cn]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:104:10:150:64:97:from,2a07:de40:b281:106:10:150:64:167:received]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RCPT_COUNT_SEVEN(0.00)[9]; DKIM_TRACE(0.00)[suse.de:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:rdns,imap1.dmz-prg2.suse.org:helo,kylinos.cn:email,suse.de:dkim,suse.de:mid] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251106_020707_344348_97C96357 X-CRM114-Status: GOOD ( 12.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 06 Nov 2025 07:33:39 +0100, wangdich9700@163.com wrote: > > From: wangdicheng > > In file included from ../sound/pci/au88x0/au8830.c:15: > In function ¡vortex_Eqlzr_SetAllBandsFromActiveCoeffSet¢, > ../sound/pci/au88x0/au88x0_eq.c:571:9: error: ¡vortex_EqHw_SetRightGainsTarget¢ reading 2 bytes from a region of size 0 [-Werror=stringop-overread] > vortex_EqHw_SetRightGainsTarget(vortex, &(eq->this130[eq->this10])); > > Modified the array access in vortex_Eqlzr_SetAllBandsFromActiveCoeffSet() to use pointer arithmetic instead of array indexing. > This resolves a compiler warning that incorrectly flagged a buffer overread when accessing the EQ gain array. > The this130 array has fixed size 20 and the index is safely within bounds, making the original code correct but confusing to static analysis. > > Signed-off-by: wangdicheng Again, please fix From and Signed-off-by addresses. thanks, Takashi