3.16.57-rc1 review patch. If anyone has any objections, please let me know.
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From: Geert Uytterhoeven geert@linux-m68k.org
commit 302d6424e4a293a5761997e6c9fc3dfb1e4c355f upstream.
With gcc-4.1.2:
drivers/infiniband/core/iwpm_util.c: In function ‘iwpm_send_mapinfo’: drivers/infiniband/core/iwpm_util.c:647: warning: ‘ret’ may be used uninitialized in this function
Indeed, if nl_client is not found in any of the scanned has buckets, ret will be used uninitialized.
Preinitialize ret to -EINVAL to fix this.
Fixes: 30dc5e63d6a5ad24 ("RDMA/core: Add support for iWARP Port Mapper user space service") Signed-off-by: Geert Uytterhoeven geert@linux-m68k.org Reviewed-by: Tatyana Nikolova tatyana.e.nikolova@intel.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings ben@decadent.org.uk --- drivers/infiniband/core/iwpm_util.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/infiniband/core/iwpm_util.c +++ b/drivers/infiniband/core/iwpm_util.c @@ -513,6 +513,7 @@ int iwpm_send_mapinfo(u8 nl_client, int } skb_num++; spin_lock_irqsave(&iwpm_mapinfo_lock, flags); + ret = -EINVAL; for (i = 0; i < IWPM_HASH_BUCKET_SIZE; i++) { hlist_for_each_entry(map_info, &iwpm_hash_bucket[i], hlist_node) {