提交 b3ad2c52 编写于 作者: N Nicholas Mc Guire 提交者: Greg Kroah-Hartman

media: pci: cx23885: handle adding to list failure

[ Upstream commit c5d59528e24ad22500347b199d52b9368e686a42 ]

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: 349bcf02 ("[media] Altera FPGA based CI driver module")
Signed-off-by: NNicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
上级 85c2f31a
......@@ -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 @@ static int altera_hw_filt_init(struct altera_ci_config *config, int hw_filt_nr)
__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 @@ int altera_ci_init(struct altera_ci_config *config, int ci_nr)
ci_dbg_print("%s: Cannot initialize CI: Error %d.\n", __func__, ret);
kfree(state);
kfree(inter);
return ret;
}
......
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