target: prevent NULL pointer dereference in target_report_luns
authorJörn Engel <joern@logfs.org>
Wed, 15 Feb 2012 21:52:11 +0000 (16:52 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 2 Apr 2012 17:32:02 +0000 (10:32 -0700)
commit3b5e7a259c88befb754607dcabd14b4f01bef212
treed8a504a5291bbf776e35ca737498a862db7fbbfc
parent1459484eea1cb844a9977b6fe49009dd2668c44a
target: prevent NULL pointer dereference in target_report_luns

commit 47f1b8803e1e358ebbf4f82bfdb98971c912a2c3 upstream.

transport_kmap_data_sg can return NULL.  I never saw this trigger, but
returning -ENOMEM seems better than a crash.  Also removes a pointless
case while at it.

Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/target/target_core_device.c