luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mtd: lart: Prevent a read from mtd->eraseregions[-1]

Browse Source 
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Roel Kluin 2009-09-18 12:51:49 -07:00 committed by David Woodhouse
parent f12a947328
commit 4c1e6b2ce1
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/mtd/devices/lart.c
View File

@ -393,7 +393,8 @@ static int flash_erase (struct mtd_info *mtd,struct erase_info *instr)
* erase range is aligned with the erase size which is in * erase range is aligned with the erase size which is in
* effect here. * effect here.
*/ */
if (instr->addr & (mtd->eraseregions[i].erasesize - 1)) return (-EINVAL); if (i < 0 || (instr->addr & (mtd->eraseregions[i].erasesize - 1)))
return -EINVAL;
/* Remember the erase region we start on */ /* Remember the erase region we start on */
first = i; first = i;
@ -409,7 +410,8 @@ static int flash_erase (struct mtd_info *mtd,struct erase_info *instr)
i--; i--;
/* is the end aligned on a block boundary? */ /* is the end aligned on a block boundary? */
if ((instr->addr + instr->len) & (mtd->eraseregions[i].erasesize - 1)) return (-EINVAL); if (i < 0 || ((instr->addr + instr->len) & (mtd->eraseregions[i].erasesize - 1)))
return -EINVAL;
addr = instr->addr; addr = instr->addr;
len = instr->len; len = instr->len;