diff options
| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2017-05-02 13:47:53 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 10:58:46 +0100 |
| commit | 1aca75fc35de393cf1101ada29a559a4717b269b (patch) | |
| tree | cb416c2e105218af8318b4f979eb48091694994a | |
| parent | 86fafbe4c93dc03d57362a831a32e1083e70e87b (diff) | |
sm501fb: don't return zero on failure path in sm501fb_start()
[ Upstream commit dc85e9a87420613b3129d5cc5ecd79c58351c546 ]
If fbmem iomemory mapping failed, sm501fb_start() breaks off
initialization, deallocates resources, but returns zero.
As a result, double deallocation can happen in sm501fb_stop().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/video/fbdev/sm501fb.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c index d0a4e2f79a57..d215faacce04 100644 --- a/drivers/video/fbdev/sm501fb.c +++ b/drivers/video/fbdev/sm501fb.c @@ -1600,6 +1600,7 @@ static int sm501fb_start(struct sm501fb_info *info, info->fbmem = ioremap(res->start, resource_size(res)); if (info->fbmem == NULL) { dev_err(dev, "cannot remap framebuffer\n"); + ret = -ENXIO; goto err_mem_res; } |