5.10-stable review patch. If anyone has any objections, please let me know.
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From: Jiasheng Jiang jiashengjiangcool@gmail.com
commit 1b61a59876f0eafc19b23007c522ee407f55dbec upstream.
Replace kcalloc() with devm_kcalloc() to prevent memory leaks in case of errors.
Fixes: 78c08247b9d3 ("mtd: Support kmsg dumper based on pstore/blk") Cc: stable@vger.kernel.org # v5.10+ Signed-off-by: Jiasheng Jiang jiashengjiangcool@gmail.com Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mtd/mtdpstore.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)
--- a/drivers/mtd/mtdpstore.c +++ b/drivers/mtd/mtdpstore.c @@ -417,11 +417,11 @@ static void mtdpstore_notify_add(struct }
longcnt = BITS_TO_LONGS(div_u64(mtd->size, info->kmsg_size)); - cxt->rmmap = kcalloc(longcnt, sizeof(long), GFP_KERNEL); - cxt->usedmap = kcalloc(longcnt, sizeof(long), GFP_KERNEL); + cxt->rmmap = devm_kcalloc(&mtd->dev, longcnt, sizeof(long), GFP_KERNEL); + cxt->usedmap = devm_kcalloc(&mtd->dev, longcnt, sizeof(long), GFP_KERNEL);
longcnt = BITS_TO_LONGS(div_u64(mtd->size, mtd->erasesize)); - cxt->badmap = kcalloc(longcnt, sizeof(long), GFP_KERNEL); + cxt->badmap = devm_kcalloc(&mtd->dev, longcnt, sizeof(long), GFP_KERNEL);
cxt->dev.total_size = mtd->size; /* just support dmesg right now */ @@ -527,9 +527,6 @@ static void mtdpstore_notify_remove(stru mtdpstore_flush_removed(cxt);
unregister_pstore_device(&cxt->dev); - kfree(cxt->badmap); - kfree(cxt->usedmap); - kfree(cxt->rmmap); cxt->mtd = NULL; cxt->index = -1; }