When do_acpi_dump() converts the table name to upper case, pass the actual size of the output buffer so that the null terminator doesn't get written beyond the end of the buffer.
Signed-off-by: Andrew Scull ascull@google.com Cc: Simon Glass sjg@chromium.org Cc: Wolfgang Wallner wolfgang.wallner@br-automation.com Cc: Bin Meng bmeng.cn@gmail.com --- cmd/acpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cmd/acpi.c b/cmd/acpi.c index c543f1e3c2..0e473b415d 100644 --- a/cmd/acpi.c +++ b/cmd/acpi.c @@ -178,7 +178,7 @@ static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc, printf("Table name '%s' must be four characters\n", name); return CMD_RET_FAILURE; } - str_to_upper(name, sig, -1); + str_to_upper(name, sig, ACPI_NAME_LEN); ret = dump_table_name(sig); if (ret) { printf("Table '%.*s' not found\n", ACPI_NAME_LEN, sig);