diff options
author | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-10-26 15:35:45 -0700 |
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committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-10-26 16:21:20 -0700 |
commit | e13d5fef88c40b87c8430f8274c3a9ca32ef90bc (patch) | |
tree | 5abcf8458b8fd80e25cbfa54776550b7d49d3f01 /net | |
parent | c8292d1da53fa60c7516ab03a9d83f7ea266d335 (diff) |
target: Fix double-free of se_cmd in target_complete_tmr_failure
Fabric drivers currently expect to internally release se_cmd in the event
of a TMR failure during target_submit_tmr(), which means the immediate call
to transport_generic_free_cmd() after TFO->queue_tm_rsp() from within
target_complete_tmr_failure() workqueue context is wrong.
This is done as some fabrics expect TMR operations to be acknowledged
before releasing the descriptor, so the assumption that core is releasing
se_cmd associated TMR memory is incorrect. This fixes a OOPs where
transport_generic_free_cmd() was being called more than once.
This bug was originally observed with tcm_qla2xxx fabric ports.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Andy Grover <agrover@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions