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mtd: Add check for devm_kcalloc()

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Add a check for devm_kcalloc() to ensure successful allocation.

Fixes: 78c08247b9 ("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>
This commit is contained in:
Jiasheng Jiang 2025-02-05 02:31:41 +00:00 • committed by Miquel Raynal
parent 1b61a59876
commit 2aee30bb10
1 changed files with 3 additions and 0 deletions
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3
drivers/mtd/mtdpstore.c
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@ -423,6 +423,9 @@ static void mtdpstore_notify_add(struct mtd_info *mtd)
longcnt = BITS_TO_LONGS(div_u64(mtd->size, mtd->erasesize));
cxt->badmap = devm_kcalloc(&mtd->dev, longcnt, sizeof(long), GFP_KERNEL);
if (!cxt->rmmap || !cxt->usedmap || !cxt->badmap)
return;
/* just support dmesg right now */
cxt->dev.flags = PSTORE_FLAGS_DMESG;
cxt->dev.zone.read = mtdpstore_read;