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| author | Evgeny Novikov <novikov@ispras.ru> | 2020-06-26 16:17:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-31 16:44:03 +0200 |
| commit | f038d105d093c596f390798436c0478bd7479614 (patch) | |
| tree | 3aa283717469fcc21c4e0142ca9eec4ed71c4a53 | |
| parent | 9ef026214f70de1ce50559421d54ad9741d14e52 (diff) | |
| download | linux-f038d105d093c596f390798436c0478bd7479614.tar.gz linux-f038d105d093c596f390798436c0478bd7479614.tar.bz2 linux-f038d105d093c596f390798436c0478bd7479614.zip | |
usb: gadget: udc: gr_udc: fix memleak on error handling path in gr_ep_init()
[ Upstream commit c8f8529e2c4141afa2ebb487ad48e8a6ec3e8c99 ]
gr_ep_init() does not assign the allocated request anywhere if allocation
of memory for the buffer fails. This is a memory leak fixed by the given
patch.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/usb/gadget/udc/gr_udc.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c index 9e246d2e55ca..f2b165182b4b 100644 --- a/drivers/usb/gadget/udc/gr_udc.c +++ b/drivers/usb/gadget/udc/gr_udc.c @@ -2000,9 +2000,12 @@ static int gr_ep_init(struct gr_udc *dev, int num, int is_in, u32 maxplimit) if (num == 0) { _req = gr_alloc_request(&ep->ep, GFP_ATOMIC); + if (!_req) + return -ENOMEM; + buf = devm_kzalloc(dev->dev, PAGE_SIZE, GFP_DMA | GFP_ATOMIC); - if (!_req || !buf) { - /* possible _req freed by gr_probe via gr_remove */ + if (!buf) { + gr_free_request(&ep->ep, _req); return -ENOMEM; } |