* [PATCH] omapfb: Fix potential NULL pointer dereference in kmalloc @ 2019-03-02 20:40 ` Aditya Pakki 2019-04-01 13:01 ` Bartlomiej Zolnierkiewicz 0 siblings, 1 reply; 2+ messages in thread From: Aditya Pakki @ 2019-03-02 20:40 UTC (permalink / raw) To: pakki001 Cc: kjlu, Bartlomiej Zolnierkiewicz, linux-omap, linux-fbdev, dri-devel, linux-kernel Memory allocated, using kmalloc, for new_compat may fail. This patch checks for such an error and prevents potential NULL pointer dereference. Signed-off-by: Aditya Pakki <pakki001@umn.edu> --- drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.c b/drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.c index 136d30484d02..0592c436b2da 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.c @@ -111,6 +111,8 @@ static void __init omapdss_omapify_node(struct device_node *node) new_len = prop->length + strlen(prefix) * num_strs; new_compat = kmalloc(new_len, GFP_KERNEL); + if (!new_compat) + return; omapdss_prefix_strcpy(new_compat, new_len, prop->value, prop->length); -- 2.17.1 ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] omapfb: Fix potential NULL pointer dereference in kmalloc 2019-03-02 20:40 ` [PATCH] omapfb: Fix potential NULL pointer dereference in kmalloc Aditya Pakki @ 2019-04-01 13:01 ` Bartlomiej Zolnierkiewicz 0 siblings, 0 replies; 2+ messages in thread From: Bartlomiej Zolnierkiewicz @ 2019-04-01 13:01 UTC (permalink / raw) To: Aditya Pakki; +Cc: kjlu, linux-omap, linux-fbdev, dri-devel, linux-kernel On 03/02/2019 09:40 PM, Aditya Pakki wrote: > Memory allocated, using kmalloc, for new_compat may fail. This patch > checks for such an error and prevents potential NULL pointer > dereference. > > Signed-off-by: Aditya Pakki <pakki001@umn.edu> Patch queued for v5.2, thanks. Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics ^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-03-02 20:40 ` [PATCH] omapfb: Fix potential NULL pointer dereference in kmalloc Aditya Pakki
2019-04-01 13:01 ` Bartlomiej Zolnierkiewicz
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