This is an automatic generated email to let you know that the following patch were queued:
Subject: media: cec: cec-api: add locking in cec_release() Author: Hans Verkuil <hverkuil-ci...@xs4all.nl> Date: Fri Feb 23 12:25:55 2024 +0000 When cec_release() uses fh->msgs it has to take fh->lock, otherwise the list can get corrupted. Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl> Reported-by: Yang, Chenyuan <c...@illinois.edu> Closes: https://lore.kernel.org/linux-media/ph7pr11mb57688e64ade4fe82e658d86da0...@ph7pr11mb5768.namprd11.prod.outlook.com/ Fixes: ca684386e6e2 ("[media] cec: add HDMI CEC framework (api)") Signed-off-by: Mauro Carvalho Chehab <mche...@kernel.org> drivers/media/cec/core/cec-api.c | 3 +++ 1 file changed, 3 insertions(+) --- diff --git a/drivers/media/cec/core/cec-api.c b/drivers/media/cec/core/cec-api.c index 67dc79ef1705..d64bb716f9c6 100644 --- a/drivers/media/cec/core/cec-api.c +++ b/drivers/media/cec/core/cec-api.c @@ -664,6 +664,8 @@ static int cec_release(struct inode *inode, struct file *filp) list_del_init(&data->xfer_list); } mutex_unlock(&adap->lock); + + mutex_lock(&fh->lock); while (!list_empty(&fh->msgs)) { struct cec_msg_entry *entry = list_first_entry(&fh->msgs, struct cec_msg_entry, list); @@ -681,6 +683,7 @@ static int cec_release(struct inode *inode, struct file *filp) kfree(entry); } } + mutex_unlock(&fh->lock); kfree(fh); cec_put_device(devnode);
