From 0a4524d726cd4d109c57fc194a55ff0a9e4df0e9 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Fri, 28 Oct 2011 19:58:16 -0300 Subject: [PATCH] [media] drivers/media/video/atmel-isi.c: eliminate a null pointer dereference The variable isi might be null or might be freed at the point of the call to clk_put. pclk contains the value that isi->pclk is expected to point to. The semantic match that finds this problem is as follows: // @r@ expression E, E1; identifier f; statement S1,S2,S3; @@ if (E == NULL) { ... when != if (E == NULL || ...) S1 else S2 when != E = E1 *E->f ... when any return ...; } else S3 // Signed-off-by: Julia Lawall Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/atmel-isi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/video/atmel-isi.c b/drivers/media/video/atmel-isi.c index 8c775c59e120..fbc904f2f6fd 100644 --- a/drivers/media/video/atmel-isi.c +++ b/drivers/media/video/atmel-isi.c @@ -1036,7 +1036,7 @@ err_alloc_ctx: err_alloc_descriptors: kfree(isi); err_alloc_isi: - clk_put(isi->pclk); + clk_put(pclk); return ret; } -- 2.30.2