In onenand_scan(), if CONFIG_MTD_ONENAND_VERIFY_WRITE is defined, 'this->verify_buf' is allocated through kzalloc(). However, it is not deallocated in the following execution, if the allocation for 'this->oob_buf' fails, leading to a memory leak bug. To fix this issue, free 'this->verify_buf' before returning the error.
Signed-off-by: Wenwen Wang <[email protected]> --- drivers/mtd/nand/onenand/onenand_base.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mtd/nand/onenand/onenand_base.c b/drivers/mtd/nand/onenand/onenand_base.c index e082d63..77bd32a 100644 --- a/drivers/mtd/nand/onenand/onenand_base.c +++ b/drivers/mtd/nand/onenand/onenand_base.c @@ -3880,6 +3880,9 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) if (!this->oob_buf) { if (this->options & ONENAND_PAGEBUF_ALLOC) { this->options &= ~ONENAND_PAGEBUF_ALLOC; +#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE + kfree(this->verify_buf); +#endif kfree(this->page_buf); } return -ENOMEM; -- 2.7.4
