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| author | Jiasheng Jiang <jiashengjiangcool@gmail.com> | 2025-02-05 02:31:41 +0000 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2025-03-04 12:07:08 +0100 |
| commit | 2aee30bb10d7bad0a60255059c9ce1b84cf0130e (patch) | |
| tree | a4ba1ce5783600392d81e74f55d02e26c330f3e9 | |
| parent | 1b61a59876f0eafc19b23007c522ee407f55dbec (diff) | |
mtd: Add check for devm_kcalloc()
Add a check for devm_kcalloc() to ensure successful allocation.
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>
| -rw-r--r-- | drivers/mtd/mtdpstore.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mtd/mtdpstore.c b/drivers/mtd/mtdpstore.c index 2d004d41cf75..9cf3872e37ae 100644 --- a/drivers/mtd/mtdpstore.c +++ b/drivers/mtd/mtdpstore.c @@ -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; |