On 6/30/20 9:54 PM, Evgeny Novikov wrote:
neofb_probe() calls neo_scan_monitor() that can successfully allocate a memory for info->monspecs.modedb and proceed to case 0x03. There it does not free the memory and returns -1. neofb_probe() goes to label err_scan_monitor, thus, it does not free this memory through calling fb_destroy_modedb() as well. We can not go to label err_init_hw since neo_scan_monitor() can fail during memory allocation. So, the patch frees the memory directly for case 0x03.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Evgeny Novikov novikov@ispras.ru
Applied to drm-misc-next tree, thanks.
Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics
drivers/video/fbdev/neofb.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/video/fbdev/neofb.c b/drivers/video/fbdev/neofb.c index f5a676bfd67a..09a20d4ab35f 100644 --- a/drivers/video/fbdev/neofb.c +++ b/drivers/video/fbdev/neofb.c @@ -1819,6 +1819,7 @@ static int neo_scan_monitor(struct fb_info *info) #else printk(KERN_ERR "neofb: Only 640x480, 800x600/480 and 1024x768 panels are currently supported\n");
kfree(info->monspecs.modedb);#endif default: