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| author |   Russ Weight <russell.h.weight@intel.com> | 2022-08-30 17:25:18 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-01 17:47:27 +0200 |
| commit | 789bba82f63c3e81dce426ba457fc7905b30ac6e (patch) | |
| tree | ac7efbdb2aa65d3e69044fb646951ed63829f974 /drivers/base/firmware_loader/sysfs_upload.c | |
| parent | firmware_loader: Fix use-after-free during unregister (diff) | |
| download | wireguard-linux-789bba82f63c3e81dce426ba457fc7905b30ac6e.tar.xz wireguard-linux-789bba82f63c3e81dce426ba457fc7905b30ac6e.zip | |
firmware_loader: Fix memory leak in firmware upload
In the case of firmware-upload, an instance of struct fw_upload is
allocated in firmware_upload_register(). This data needs to be freed
in fw_dev_release(). Create a new fw_upload_free() function in
sysfs_upload.c to handle the firmware-upload specific memory frees
and incorporate the missing kfree call for the fw_upload structure.
Fixes: 97730bbb242c ("firmware_loader: Add firmware-upload support")
Cc: stable <stable@kernel.org>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Link: https://lore.kernel.org/r/20220831002518.465274-1-russell.h.weight@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/base/firmware_loader/sysfs_upload.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/base/firmware_loader/sysfs_upload.c b/drivers/base/firmware_loader/sysfs_upload.c index 63e15bddd80c..a0af8f5f13d8 100644 --- a/drivers/base/firmware_loader/sysfs_upload.c +++ b/drivers/base/firmware_loader/sysfs_upload.c @@ -264,6 +264,15 @@ int fw_upload_start(struct fw_sysfs *fw_sysfs) return 0; } +void fw_upload_free(struct fw_sysfs *fw_sysfs) +{ + struct fw_upload_priv *fw_upload_priv = fw_sysfs->fw_upload_priv; + + free_fw_priv(fw_sysfs->fw_priv); + kfree(fw_upload_priv->fw_upload); + kfree(fw_upload_priv); +} + /** * firmware_upload_register() - register for the firmware upload sysfs API * @module: kernel module of this device |