From 4f4e6644cd876c844cdb3bea2dd7051787d5ae25 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Thu, 8 Apr 2021 12:31:20 +0200 Subject: media: gscpa/stv06xx: fix memory leak For two of the supported sensors the stv06xx driver allocates memory which is stored in sd->sensor_priv. This memory is freed on a disconnect, but if the probe() fails, then it isn't freed and so this leaks memory. Add a new probe_error() op that drivers can use to free any allocated memory in case there was a probe failure. Thanks to Pavel Skripkin for discovering the cause of the memory leak. Reported-and-tested-by: syzbot+e7f4c64a4248a0340c37@syzkaller.appspotmail.com Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/gspca/gspca.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/media/usb/gspca/gspca.h') diff --git a/drivers/media/usb/gspca/gspca.h b/drivers/media/usb/gspca/gspca.h index b0ced2e14006..a6554d5e9e1a 100644 --- a/drivers/media/usb/gspca/gspca.h +++ b/drivers/media/usb/gspca/gspca.h @@ -105,6 +105,7 @@ struct sd_desc { cam_cf_op config; /* called on probe */ cam_op init; /* called on probe and resume */ cam_op init_controls; /* called on probe */ + cam_v_op probe_error; /* called if probe failed, do cleanup here */ cam_op start; /* called on stream on after URBs creation */ cam_pkt_op pkt_scan; /* optional operations */ -- cgit v1.2.3