sound/i2c/other/ak4xxx-adda.c:75 ak4529_reset() error: buffer overflow 'ak->images' 64 <= 255
kernel test robot <[email protected]>
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BCC: [email protected] CC: [email protected] CC: [email protected] TO: "Cássio Gabriel" <[email protected]> CC: Takashi Iwai <[email protected]> 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/[email protected]/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 <[email protected]> | Reported-by: Dan Carpenter <[email protected]> | Closes: https://lore.kernel.org/r/[email protected]/ 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