diff options
| author | Wen Yang <[email protected]> | 2019-07-08 14:19:03 +0800 |
|---|---|---|
| committer | Herbert Xu <[email protected]> | 2019-07-12 18:16:02 +0800 |
| commit | 95566aa75cd6b3b404502c06f66956b5481194b3 (patch) | |
| tree | 102cac710aeaca5855b630d1918cb9ddc6744cca | |
| parent | 049ce1505b3a6504f4cb59148baaacc36d5c75e3 (diff) | |
crypto: crypto4xx - fix a potential double free in ppc4xx_trng_probe
There is a possible double free issue in ppc4xx_trng_probe():
85: dev->trng_base = of_iomap(trng, 0);
86: of_node_put(trng); ---> released here
87: if (!dev->trng_base)
88: goto err_out;
...
110: ierr_out:
111: of_node_put(trng); ---> double released here
...
This issue was detected by using the Coccinelle software.
We fix it by removing the unnecessary of_node_put().
Fixes: 5343e674f32f ("crypto4xx: integrate ppc4xx-rng into crypto4xx")
Signed-off-by: Wen Yang <[email protected]>
Cc: <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Allison Randal <[email protected]>
Cc: Armijn Hemel <[email protected]>
Cc: Julia Lawall <[email protected]>
Cc: [email protected]
Cc: [email protected]
Acked-by: Julia Lawall <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
| -rw-r--r-- | drivers/crypto/amcc/crypto4xx_trng.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_trng.c b/drivers/crypto/amcc/crypto4xx_trng.c index 53ab1f140a26..8a3ed4031206 100644 --- a/drivers/crypto/amcc/crypto4xx_trng.c +++ b/drivers/crypto/amcc/crypto4xx_trng.c @@ -111,7 +111,6 @@ void ppc4xx_trng_probe(struct crypto4xx_core_device *core_dev) return; err_out: - of_node_put(trng); iounmap(dev->trng_base); kfree(rng); dev->trng_base = NULL; |