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lib: sbi: Handle length of extension name string exceed buffer size error

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print error message and turncat the string when length
of extension name string exceed buffer size

Signed-off-by: Jimmy Ho <jimmy.ho@sifive.com>
Reviewed-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Link: https://lore.kernel.org/r/20250321001450.11189-1-jimmy.ho@sifive.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Jimmy Ho
2025-03-21 08:14:50 +08:00
committed by Anup Patel
parent 190979b4fc
commit d2166a9d40
1 changed files with 4 additions and 0 deletions
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4
lib/sbi/sbi_hart.c
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@@ -721,6 +721,10 @@ void sbi_hart_get_extensions_str(struct sbi_scratch *scratch,
sbi_memset(extensions_str, 0, nestr);
for_each_set_bit(ext, hfeatures->extensions, SBI_HART_EXT_MAX) {
if (offset + sbi_strlen(sbi_hart_ext[ext].name) + 1 > nestr) {
sbi_printf("%s:extension name is longer than buffer (error)\n", __func__);
break;
}
sbi_snprintf(extensions_str + offset,
nestr - offset,
"%s,", sbi_hart_ext[ext].name);