diff options
| author | Johan Hovold <johan@kernel.org> | 2016-11-18 14:17:31 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-09 08:32:21 +0100 |
| commit | 2d2914349286d29e57b6536c01251c1332a8e784 (patch) | |
| tree | 9de45cd8e42589a3589e484c103812d0906bad60 /drivers/hwtracing | |
| parent | fbb28e76454fd7b9c59e5e35702982ee6d0dae8b (diff) | |
stm class: Fix device leak in open error path
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@kernel.org>
Fixes: 7bd1d4093c2f ("stm class: Introduce an abstraction for...")
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/stm/core.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/hwtracing/stm/core.c b/drivers/hwtracing/stm/core.c index 51f81d64ca37..a6ea387b5b00 100644 --- a/drivers/hwtracing/stm/core.c +++ b/drivers/hwtracing/stm/core.c @@ -361,7 +361,7 @@ static int stm_char_open(struct inode *inode, struct file *file) 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 *inode, struct file *file) 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 *inode, struct file *file) return nonseekable_open(inode, file); err_free: + kfree(stmf); +err_put_device: /* matches class_find_device() above */ put_device(dev); - kfree(stmf); return err; } |