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mtd: nand_bbt: fix theoretical integer overflow in BBT write
authorBrian Norris <computersforpeace@gmail.com>
Sat, 28 Feb 2015 10:13:13 +0000 (02:13 -0800)
committerBrian Norris <computersforpeace@gmail.com>
Thu, 7 May 2015 03:02:37 +0000 (20:02 -0700)
commitf5cd2ae1e4ad23bc6527b4a667d3f27534730cc5
treedb6afc8de0be0581cffc2d7a0999f13614514f4atree | snapshot (tar.gz zip)
parent83c59542d0af36d6331e11869cd3d8197dec1551commit | diff
mtd: nand_bbt: fix theoretical integer overflow in BBT write

This statement was written with a cast-to-loff_t to be sure to have a
full 64-bit mask. However, we don't account for the fact that
'1 << this->bbt_erase_shift' might already overflow.

This will not be a problem in practice, since eraseblocks should never
be anywhere near 4GiB. But we can do this for completeness, and quiet
Coverity in the meantime. CID #1226806.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
drivers/mtd/nand/nand_bbt.c diff | blob | blame | history