UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

- fix bad EFI vars iterator usage 

-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 Comment: Kees Cook <kees@outflux.net>
 
 iQIcBAABCgAGBQJZG0rAAAoJEIly9N/cbcAmfigP/iaKLzuVid4PC3Pzf7hAwmmg
 cWrH8sPMZF6elSSKHguRWqUpyHgK6crsJYnMB8c+4+/upXMorBpX6GFK3CEZG2UO
 1vrVkJ06q0N41qNnJc3TpDV3RxecdKOs26Jtc9gm+ZMScJxZBLXBu3bfwkwE8V/c
 1RFYhFciFg2lZBwIUZb73nAtvBtMdkLACLA4isa1Gn/Q0Ah50s+MFrePNjBm2Xen
 mjhp7lP1w57X6Is3ZlbNwVEWA66qUP3PiyTasA0RiCNfQzJtT71NSCkh3849w1rX
 61cink78ZLtokdWMs510PiiUNiwivpkewftkUj33QAWkCvr7mh5rTleYNDcule3S
 GWHcq7I4HNJSf2aoAUMG6A21KGT1Rg3+EmdH6Ci1/sTOIRkitFdWTjdx/JJb6qH8
 WRmFh+lF3v5eB4pFu5z4sgqBbHFEa3cXsHqYw5rRrJuFJM/FLzVrOPTGCEfaQzj0
 Nnl53MeQ3PNK5djpJtNQ0JFkvnylgbed2E5XUQbqm5nNGWMuviBHNPKhyBroSoEZ
 LHk9EW8NRFUXZMjPEbi+2vPigz4/UAXBcc/MOPqdbZCBughTdq7xicIdil31hPxn
 WeJzhXGs0rVEdzZJaUDYT+yKuTbTBeYwl/ujAGtqSB45lk/VLdZ0vWRz7PL83MwL
 BwOer++6MGmiO0JnkS85
 =bdBo
 -----END PGP SIGNATURE-----

Merge tag 'pstore-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull pstore fix from Kees Cook:
 "Fix bad EFI vars iterator usage"

* tag 'pstore-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  efi-pstore: Fix read iter after pstore API refactor
This commit is contained in:
Linus Torvalds 2017-05-16 13:29:07 -07:00
parent 2b6b38b04c 6f61dd3aa3
commit b23afd3848
1 changed files with 3 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/firmware/efi/efi-pstore.c
View File

@ -155,19 +155,14 @@ static int efi_pstore_scan_sysfs_exit(struct efivar_entry *pos,
* efi_pstore_sysfs_entry_iter
*
* @record: pstore record to pass to callback
* @pos: entry to begin iterating from
*
* You MUST call efivar_enter_iter_begin() before this function, and
* efivar_entry_iter_end() afterwards.
*
* It is possible to begin iteration from an arbitrary entry within
* the list by passing @pos. @pos is updated on return to point to
* the next entry of the last one passed to efi_pstore_read_func().
* To begin iterating from the beginning of the list @pos must be %NULL.
*/
static int efi_pstore_sysfs_entry_iter(struct pstore_record *record,
struct efivar_entry **pos)
static int efi_pstore_sysfs_entry_iter(struct pstore_record *record)
{
struct efivar_entry **pos = (struct efivar_entry **)&record->psi->data;
struct efivar_entry *entry, *n;
struct list_head *head = &efivar_sysfs_list;
int size = 0;
@ -218,7 +213,6 @@ static int efi_pstore_sysfs_entry_iter(struct pstore_record *record,
*/
static ssize_t efi_pstore_read(struct pstore_record *record)
{
struct efivar_entry *entry = (struct efivar_entry *)record->psi->data;
ssize_t size;
record->buf = kzalloc(EFIVARS_DATA_SIZE_MAX, GFP_KERNEL);
@ -229,7 +223,7 @@ static ssize_t efi_pstore_read(struct pstore_record *record)
size = -EINTR;
goto out;
}
size = efi_pstore_sysfs_entry_iter(record, &entry);
size = efi_pstore_sysfs_entry_iter(record);
efivar_entry_iter_end();
out: