From: Gustavo A. R. Silva gustavo@embeddedor.com
[ Upstream commit a8627cda7cfffe1792c199660c2b4f03ba2bd97b ]
There is a potential execution path in which function ssif_info_find() returns NULL, hence there is a NULL pointer dereference when accessing pointer *addr_info*
Fix this by null checking *addr_info* before dereferencing it.
Addresses-Coverity-ID: 1473145 ("Explicit null dereferenced") Fixes: e333054a91d1 ("ipmi: Fix I2C client removal in the SSIF driver") Signed-off-by: Gustavo A. R. Silva gustavo@embeddedor.com Signed-off-by: Corey Minyard cminyard@mvista.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/char/ipmi/ipmi_ssif.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c index 0146bc3252c5a..cf87bfe971e6b 100644 --- a/drivers/char/ipmi/ipmi_ssif.c +++ b/drivers/char/ipmi/ipmi_ssif.c @@ -1731,7 +1731,9 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
out: if (rv) { - addr_info->client = NULL; + if (addr_info) + addr_info->client = NULL; + dev_err(&client->dev, "Unable to start IPMI SSIF: %d\n", rv); kfree(ssif_info); }