From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Dan Carpenter <error27@gmail.com>
Subject: sound/i2c/other/ak4xxx-adda.c:75 ak4529_reset() error: buffer overflow 'ak->images' 64 <= 255
Date: Thu, 13 Aug 2026 05:21:44 +0800 [thread overview]
Message-ID: <202608130552.Tyon6afY-lkp@intel.com> (raw)
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: "Cássio Gabriel" <cassiogabrielcontato@gmail.com>
CC: Takashi Iwai <tiwai@suse.de>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f5bbbfec59b4e2fb7520a91de3df8a6174325d6a
commit: 66f6f543283e91b8899b0dd109d8f15a529e8464 ALSA: i2c: ak4xxx-adda: implement AK4529 reset handling
date: 4 months ago
:::::: branch date: 31 hours ago
:::::: commit date: 4 months ago
config: x86_64-randconfig-161 (https://download.01.org/0day-ci/archive/20260813/202608130552.Tyon6afY-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
smatch: v0.5.0-9187-g5189e3fb
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: 66f6f543283e ("ALSA: i2c: ak4xxx-adda: implement AK4529 reset handling")
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202608130552.Tyon6afY-lkp@intel.com/
New smatch warnings:
sound/i2c/other/ak4xxx-adda.c:75 ak4529_reset() error: buffer overflow 'ak->images' 64 <= 255
Old smatch warnings:
sound/i2c/other/ak4xxx-adda.c:93 ak435X_reset() error: buffer overflow 'ak->images' 64 <= 255
vim +75 sound/i2c/other/ak4xxx-adda.c
cb9d24e4349013 Takashi Iwai 2006-06-27 55
66f6f543283e91 Cássio Gabriel 2026-04-07 56 /* reset procedure for AK4529 */
66f6f543283e91 Cássio Gabriel 2026-04-07 57 static void ak4529_reset(struct snd_akm4xxx *ak, int state)
66f6f543283e91 Cássio Gabriel 2026-04-07 58 {
66f6f543283e91 Cássio Gabriel 2026-04-07 59 static const unsigned char regs[] = {
66f6f543283e91 Cássio Gabriel 2026-04-07 60 0x0a, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
66f6f543283e91 Cássio Gabriel 2026-04-07 61 0x06, 0x07, 0x0b, 0x0c, 0x08,
66f6f543283e91 Cássio Gabriel 2026-04-07 62 };
66f6f543283e91 Cássio Gabriel 2026-04-07 63 unsigned int i;
66f6f543283e91 Cássio Gabriel 2026-04-07 64 unsigned char reg;
66f6f543283e91 Cássio Gabriel 2026-04-07 65
66f6f543283e91 Cássio Gabriel 2026-04-07 66 if (state) {
66f6f543283e91 Cássio Gabriel 2026-04-07 67 snd_akm4xxx_write(ak, 0, 0x09,
66f6f543283e91 Cássio Gabriel 2026-04-07 68 snd_akm4xxx_get(ak, 0, 0x09) & ~0x01);
66f6f543283e91 Cássio Gabriel 2026-04-07 69 return;
66f6f543283e91 Cássio Gabriel 2026-04-07 70 }
66f6f543283e91 Cássio Gabriel 2026-04-07 71
66f6f543283e91 Cássio Gabriel 2026-04-07 72 for (i = 0; i < ARRAY_SIZE(regs); i++) {
66f6f543283e91 Cássio Gabriel 2026-04-07 73 reg = regs[i];
66f6f543283e91 Cássio Gabriel 2026-04-07 74 snd_akm4xxx_write(ak, 0, reg,
66f6f543283e91 Cássio Gabriel 2026-04-07 @75 snd_akm4xxx_get(ak, 0, reg));
66f6f543283e91 Cássio Gabriel 2026-04-07 76 }
66f6f543283e91 Cássio Gabriel 2026-04-07 77 snd_akm4xxx_write(ak, 0, 0x09,
66f6f543283e91 Cássio Gabriel 2026-04-07 78 snd_akm4xxx_get(ak, 0, 0x09) | 0x01);
66f6f543283e91 Cássio Gabriel 2026-04-07 79 }
66f6f543283e91 Cássio Gabriel 2026-04-07 80
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2026-08-12 21:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-12 21:21 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-05-02 3:39 sound/i2c/other/ak4xxx-adda.c:75 ak4529_reset() error: buffer overflow 'ak->images' 64 <= 255 kernel test robot
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