From 33853ebd746f0e6aa262745376fde5d4995e0a87 Mon Sep 17 00:00:00 2001 From: Insu Yun Date: Tue, 29 Dec 2015 13:45:09 -0500 Subject: [PATCH] mtd: cfi_cmdset_0001: fixing memory leak and handling failed kmalloc kmalloc needs to be handled when failing in memory pressure. Also, it has memory leak in error routine. Signed-off-by: Insu Yun Signed-off-by: Brian Norris --- drivers/mtd/chips/cfi_cmdset_0001.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 286b97a304cf..5e1b68cbcd0a 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -596,7 +596,7 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) mtd->size = devsize * cfi->numchips; mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips; - mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) + mtd->eraseregions = kzalloc(sizeof(struct mtd_erase_region_info) * mtd->numeraseregions, GFP_KERNEL); if (!mtd->eraseregions) goto setup_err; @@ -614,6 +614,8 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].erasesize = ersize; mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].numblocks = ernum; mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].lockmap = kmalloc(ernum / 8 + 1, GFP_KERNEL); + if (!mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].lockmap) + goto setup_err; } offset += (ersize * ernum); } @@ -650,6 +652,10 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) return mtd; setup_err: + if (mtd->eraseregions) + for (i=0; icfiq->NumEraseRegions; i++) + for (j=0; jnumchips; j++) + kfree(mtd->eraseregions[(j*cfi->cfiq->NumEraseRegions)+i].lockmap); kfree(mtd->eraseregions); kfree(mtd); kfree(cfi->cmdset_priv); -- 2.20.1