Using this parameter one can disable the storage_size/2 check if
he is really sure that the UEFI does sane gc.
Signed-off-by: Richard Weinberger <rich...@nod.at>
---
drivers/firmware/efivars.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index 60c9899..0926471 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -105,8 +105,10 @@ MODULE_VERSION(EFIVARS_VERSION);
static bool efivars_pstore_disable =
IS_ENABLED(CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE);
+static bool efivars_no_storage_paranoia;
module_param_named(pstore_disable, efivars_pstore_disable, bool, 0644);
+module_param_named(no_storage_paranoia, efivars_no_storage_paranoia, bool,
0644);
/*
* The maximum size of VariableName + Data = 1024
@@ -453,7 +455,10 @@ check_var_size_locked(struct efivars *efivars, u32
attributes,
printk_once(KERN_ERR FW_BUG "Broken EFI implementation is
returning MaxVariableSize=0\n");
if (!storage_size || size > remaining_size ||
- (max_size && size > max_size) ||
+ (max_size && size > max_size))
+ return EFI_OUT_OF_RESOURCES;
+
+ if (!efivars_no_storage_paranoia &&
(remaining_size - size) < (storage_size / 2))
return EFI_OUT_OF_RESOURCES;
--
1.8.1.4
--
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