1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index 8370f72d87ff..b0a81173a268 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -457,7 +457,8 @@ static int efi_pstore_close(struct pstore_info *psi)
 }
 
 static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type,
-                               struct timespec *timespec, struct pstore_info *psi)
+                               struct timespec *timespec,
+                               char **buf, struct pstore_info *psi)
 {
         efi_guid_t vendor = LINUX_EFI_CRASH_GUID;
         struct efivars *efivars = psi->data;
@@ -478,7 +479,11 @@ static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type,
                                 timespec->tv_nsec = 0;
                                 get_var_data_locked(efivars, &efivars->walk_entry->var);
                                 size = efivars->walk_entry->var.DataSize;
-                                memcpy(psi->buf, efivars->walk_entry->var.Data, size);
+                                *buf = kmalloc(size, GFP_KERNEL);
+                                if (*buf == NULL)
+                                        return -ENOMEM;
+                                memcpy(*buf, efivars->walk_entry->var.Data,
+                                       size);
                                 efivars->walk_entry = list_entry(efivars->walk_entry->list.next,
                                                    struct efivar_entry, list);
                                 return size;
@@ -576,7 +581,8 @@ static int efi_pstore_close(struct pstore_info *psi)
 }
 
 static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type,
-                               struct timespec *time, struct pstore_info *psi)
+                               struct timespec *timespec,
+                               char **buf, struct pstore_info *psi)
 {
         return -1;
 }