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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-16 23:29:07 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-16 23:29:07 +0300 |
| commit | b23afd384801711ab6dbccd259cc14cb09a1dcaf (patch) | |
| tree | c3d9b2cabfbf3f0c1cd68925cca2235e82b4d9e7 /drivers/firmware | |
| parent | 2b6b38b04c2e7fe1713104768048fe2cae89c38e (diff) | |
| parent | 6f61dd3aa35179043f1fcdb0965c5d56278ab724 (diff) | |
| download | linux-b23afd384801711ab6dbccd259cc14cb09a1dcaf.tar.xz | |
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
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efi/efi-pstore.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c index ed3137c1ceb0..ab3a951a17e6 100644 --- a/drivers/firmware/efi/efi-pstore.c +++ b/drivers/firmware/efi/efi-pstore.c @@ -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: |