This is a note to let you know that I've just added the patch titled stm class: Fix device leak in open error path to the 4.8-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: stm-class-fix-device-leak-in-open-error-path.patch and it can be found in the queue-4.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From a0ebf519b8a2666438d999c62995618c710573e5 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan@xxxxxxxxxx> Date: Fri, 18 Nov 2016 14:17:31 +0200 Subject: stm class: Fix device leak in open error path From: Johan Hovold <johan@xxxxxxxxxx> commit a0ebf519b8a2666438d999c62995618c710573e5 upstream. Make sure to drop the reference taken by class_find_device() also on allocation errors in open(). Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Fixes: 7bd1d4093c2f ("stm class: Introduce an abstraction for...") Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/hwtracing/stm/core.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) --- a/drivers/hwtracing/stm/core.c +++ b/drivers/hwtracing/stm/core.c @@ -361,7 +361,7 @@ static int stm_char_open(struct inode *i struct stm_file *stmf; struct device *dev; unsigned int major = imajor(inode); - int err = -ENODEV; + int err = -ENOMEM; dev = class_find_device(&stm_class, NULL, &major, major_match); if (!dev) @@ -369,8 +369,9 @@ static int stm_char_open(struct inode *i stmf = kzalloc(sizeof(*stmf), GFP_KERNEL); if (!stmf) - return -ENOMEM; + goto err_put_device; + err = -ENODEV; stm_output_init(&stmf->output); stmf->stm = to_stm_device(dev); @@ -382,9 +383,10 @@ static int stm_char_open(struct inode *i return nonseekable_open(inode, file); err_free: + kfree(stmf); +err_put_device: /* matches class_find_device() above */ put_device(dev); - kfree(stmf); return err; } Patches currently in stable-queue which might be from johan@xxxxxxxxxx are queue-4.8/stm-class-fix-device-leak-in-open-error-path.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html