diff options
| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2021-04-08 13:31:20 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-04-09 14:19:38 +0300 |
| commit | 4f4e6644cd876c844cdb3bea2dd7051787d5ae25 (patch) | |
| tree | a938682e10b0496eac7d6c63e7a34c24f3b73fbe /drivers/media/usb/gspca/gspca.h | |
| parent | 98965af1ebc3a652a597cee902f462f496ef9e11 (diff) | |
| download | linux-4f4e6644cd876c844cdb3bea2dd7051787d5ae25.tar.xz | |
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 <paskripkin@gmail.com> for discovering the cause
of the memory leak.
Reported-and-tested-by: syzbot+e7f4c64a4248a0340c37@syzkaller.appspotmail.com
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/usb/gspca/gspca.h')
| -rw-r--r-- | drivers/media/usb/gspca/gspca.h | 1 |
1 files changed, 1 insertions, 0 deletions
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 */ |