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authorColin Ian King <colin.king@canonical.com>2018-10-03 10:59:57 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-09 16:02:29 +0200
commitbf7f547ecdd707e7b4fcbc467b4f9ddb29915391 (patch)
treec21940ba483db09d750220cbf08a5a8bec514566 /drivers/usb/core/hub.c
parent6503016ea5d3945f9af1eeac23ba99f408f3af1e (diff)
downloadlinux-bf7f547ecdd707e7b4fcbc467b4f9ddb29915391.tar.bz2
usb: core: fix memory leak on port_dev_path allocation
Currently the allocation of port_dev_path from the call to kobject_get_path is not being kfree'd, causing a memory leak. Fix this by kfree'ing this at the end of the function. Add an extra error exit path to fix one of the early leaks when envp[0] fails to be allocated. Detected by CoverityScan, CID#1473771 ("Resource Leak") Fixes: 201af55da8a3 ("usb: core: added uevent for over-current") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/hub.c')
-rw-r--r--drivers/usb/core/hub.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index bf76a3dd4359..c6077d582d29 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -5170,7 +5170,7 @@ static void port_over_current_notify(struct usb_port *port_dev)
envp[0] = kasprintf(GFP_KERNEL, "OVER_CURRENT_PORT=%s", port_dev_path);
if (!envp[0])
- return;
+ goto exit_path;
envp[1] = kasprintf(GFP_KERNEL, "OVER_CURRENT_COUNT=%u",
port_dev->over_current_count);
@@ -5182,6 +5182,8 @@ static void port_over_current_notify(struct usb_port *port_dev)
kfree(envp[1]);
exit:
kfree(envp[0]);
+exit_path:
+ kfree(port_dev_path);
}
static void port_event(struct usb_hub *hub, int port1)