3.16.7-ckt26 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Peter Jones <pjones@xxxxxxxxxx> commit 3dcb1f55dfc7631695e69df4a0d589ce5274bd07 upstream. Actually translate from ucs2 to utf8 before doing the test, and then test against our other utf8 data, instead of fudging it. Signed-off-by: Peter Jones <pjones@xxxxxxxxxx> Acked-by: Matthew Garrett <mjg59@xxxxxxxxxx> Tested-by: Lee, Chun-Yi <jlee@xxxxxxxx> Signed-off-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx> --- drivers/firmware/efi/vars.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c index 5abe943e3404..aad48b99553f 100644 --- a/drivers/firmware/efi/vars.c +++ b/drivers/firmware/efi/vars.c @@ -189,10 +189,19 @@ static const struct variable_validate variable_validate[] = { }; bool -efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len) +efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long data_size) { int i; - u16 *unicode_name = var_name; + unsigned long utf8_size; + u8 *utf8_name; + + utf8_size = ucs2_utf8size(var_name); + utf8_name = kmalloc(utf8_size + 1, GFP_KERNEL); + if (!utf8_name) + return false; + + ucs2_as_utf8(utf8_name, var_name, utf8_size); + utf8_name[utf8_size] = '\0'; for (i = 0; variable_validate[i].validate != NULL; i++) { const char *name = variable_validate[i].name; @@ -200,28 +209,29 @@ efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len) for (match = 0; ; match++) { char c = name[match]; - u16 u = unicode_name[match]; - - /* All special variables are plain ascii */ - if (u > 127) - return true; + char u = utf8_name[match]; /* Wildcard in the matching name means we've matched */ - if (c == '*') + if (c == '*') { + kfree(utf8_name); return variable_validate[i].validate(var_name, - match, data, len); + match, data, data_size); + } /* Case sensitive match */ if (c != u) break; /* Reached the end of the string while matching */ - if (!c) + if (!c) { + kfree(utf8_name); return variable_validate[i].validate(var_name, - match, data, len); + match, data, data_size); + } } } + kfree(utf8_name); return true; } EXPORT_SYMBOL_GPL(efivar_validate); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html