diff options
| author | Jiasheng Jiang <jiashengjiangcool@gmail.com> | 2025-02-05 02:31:41 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-20 10:15:38 +0200 |
| commit | 39fc12742292ed1ba38ac0f08ac324b1ad6ca297 (patch) | |
| tree | 03f1274ef95f8cb07d48b9b7c436e479ca440b5c | |
| parent | 91e1405088a9e31b61acbd6774d98f23fbd2d95a (diff) | |
mtd: Add check for devm_kcalloc()
commit 2aee30bb10d7bad0a60255059c9ce1b84cf0130e upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 7ac8ac901306..b3e2ea4dd40e 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 = kcalloc(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; |