diff options
| author | Dinghao Liu <dinghao.liu@zju.edu.cn> | 2023-09-21 15:14:12 +0800 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2023-10-16 13:03:05 +0200 |
| commit | 63e8b94ad1840f02462633abdb363397f56bc642 (patch) | |
| tree | 7408e21b5dfbf994772896e4d3802d95497999c0 | |
| parent | 5c95bf274665cc9f5126e4a48a9da51114f7afd2 (diff) | |
| download | linux-63e8b94ad1840f02462633abdb363397f56bc642.tar.gz | |
s390/cio: fix a memleak in css_alloc_subchannel
When dma_set_coherent_mask() fails, sch->lock has not been
freed, which is allocated in css_sch_create_locks(), leading
to a memleak.
Fixes: 4520a91a976e ("s390/cio: use dma helpers for setting masks")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Message-Id: <20230921071412.13806-1-dinghao.liu@zju.edu.cn>
Link: https://lore.kernel.org/linux-s390/bd38baa8-7b9d-4d89-9422-7e943d626d6e@linux.ibm.com/
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
| -rw-r--r-- | drivers/s390/cio/css.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 3ef636935a547c..3ff46fc694f85e 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -233,17 +233,19 @@ struct subchannel *css_alloc_subchannel(struct subchannel_id schid, */ ret = dma_set_coherent_mask(&sch->dev, DMA_BIT_MASK(31)); if (ret) - goto err; + goto err_lock; /* * But we don't have such restrictions imposed on the stuff that * is handled by the streaming API. */ ret = dma_set_mask(&sch->dev, DMA_BIT_MASK(64)); if (ret) - goto err; + goto err_lock; return sch; +err_lock: + kfree(sch->lock); err: kfree(sch); return ERR_PTR(ret); |