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Subject[PATCH v2 1/5] lightnvm: fix memory leak
Date
If copy_to_user() fails we returned error but we missed releasing
devices.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
---

v1 on fixed one error. v2 fixes both.

drivers/lightnvm/core.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index f659e60..e338048 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -677,8 +677,10 @@ static long nvm_ioctl_info(struct file *file, void __user *arg)
info->tgtsize = tgt_iter;
up_write(&nvm_lock);

- if (copy_to_user(arg, info, sizeof(struct nvm_ioctl_info)))
+ if (copy_to_user(arg, info, sizeof(struct nvm_ioctl_info))) {
+ kfree(info);
return -EFAULT;
+ }

kfree(info);
return 0;
@@ -721,8 +723,11 @@ static long nvm_ioctl_get_devices(struct file *file, void __user *arg)

devices->nr_devices = i;

- if (copy_to_user(arg, devices, sizeof(struct nvm_ioctl_get_devices)))
+ if (copy_to_user(arg, devices,
+ sizeof(struct nvm_ioctl_get_devices))) {
+ kfree(devices);
return -EFAULT;
+ }

kfree(devices);
return 0;
--
1.9.1


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