Messages in this thread Patch in this message | | | From | lizf@kernel ... | Subject | [PATCH 3.4 48/91] iscsi-target: avoid NULL pointer in iscsi_copy_param_list failure | Date | Thu, 27 Nov 2014 16:42:31 +0800 |
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From: Joern Engel <joern@logfs.org>
3.4.105-rc1 review patch. If anyone has any objections, please let me know.
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commit 8ae757d09c45102b347a1bc2867f54ffc1ab8fda upstream.
In iscsi_copy_param_list() a failed iscsi_param_list memory allocation currently invokes iscsi_release_param_list() to cleanup, and will promptly trigger a NULL pointer dereference.
Instead, go ahead and return for the first iscsi_copy_param_list() failure case.
Found by coverity.
Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Zefan Li <lizefan@huawei.com> --- drivers/target/iscsi/iscsi_target_parameters.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/target/iscsi/iscsi_target_parameters.c b/drivers/target/iscsi/iscsi_target_parameters.c index 8a8ff23..ed4abad 100644 --- a/drivers/target/iscsi/iscsi_target_parameters.c +++ b/drivers/target/iscsi/iscsi_target_parameters.c @@ -552,7 +552,7 @@ int iscsi_copy_param_list( param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL); if (!param_list) { pr_err("Unable to allocate memory for struct iscsi_param_list.\n"); - goto err_out; + return -1; } INIT_LIST_HEAD(¶m_list->param_list); INIT_LIST_HEAD(¶m_list->extra_response_list); -- 1.9.1
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