From c5d59528e24ad22500347b199d52b9368e686a42 Mon Sep 17 00:00:00 2001 From: Nicholas Mc Guire Date: Sun, 9 Sep 2018 12:02:32 -0400 Subject: [PATCH] media: pci: cx23885: handle adding to list failure altera_hw_filt_init() which calls append_internal() assumes that the node was successfully linked in while in fact it can silently fail. So the call-site needs to set return to -ENOMEM on append_internal() returning NULL and exit through the err path. Fixes: 349bcf02e361 ("[media] Altera FPGA based CI driver module") Signed-off-by: Nicholas Mc Guire Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/cx23885/altera-ci.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/media/pci/cx23885/altera-ci.c b/drivers/media/pci/cx23885/altera-ci.c index 62bc8049b320..198c05e83f5c 100644 --- a/drivers/media/pci/cx23885/altera-ci.c +++ b/drivers/media/pci/cx23885/altera-ci.c @@ -665,6 +665,10 @@ static int altera_hw_filt_init(struct altera_ci_config *config, int hw_filt_nr) } temp_int = append_internal(inter); + if (!temp_int) { + ret = -ENOMEM; + goto err; + } inter->filts_used = 1; inter->dev = config->dev; inter->fpga_rw = config->fpga_rw; @@ -699,6 +703,7 @@ err: __func__, ret); kfree(pid_filt); + kfree(inter); return ret; } @@ -733,6 +738,10 @@ int altera_ci_init(struct altera_ci_config *config, int ci_nr) } temp_int = append_internal(inter); + if (!temp_int) { + ret = -ENOMEM; + goto err; + } inter->cis_used = 1; inter->dev = config->dev; inter->fpga_rw = config->fpga_rw; @@ -801,6 +810,7 @@ err: ci_dbg_print("%s: Cannot initialize CI: Error %d.\n", __func__, ret); kfree(state); + kfree(inter); return ret; } -- 2.20.1