diff options
| author | Mark Rustad <mark.d.rustad@intel.com> | 2012-04-03 10:24:41 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-04-06 18:56:43 -0700 |
| commit | e1c4038282c7586c3544542b37872c434669d3ac (patch) | |
| tree | f747aea02b1e52b14ba89bd7606cd4d8bdccc279 /drivers/target/tcm_fc/tfc_io.c | |
| parent | dd775ae2549217d3ae09363e3edb305d0fa19928 (diff) | |
tcm_fc: Add abort flag for gracefully handling exchange timeout
Add abort flag and use it to terminate processing when an exchange
is timed out or is reset. The abort flag is used in place of the
transport_generic_free_cmd function call in the reset and timeout
cases, because calling that function in that context would free
memory that was in use. The aborted flag allows the lifetime to
be managed in a more normal way, while truncating the processing.
This change eliminates a source of memory corruption which
manifested in a variety of ugly ways.
(nab: Drop unused struct fc_exch *ep in ft_recv_seq)
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Acked-by: Kiran Patil <Kiran.patil@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/tcm_fc/tfc_io.c')
| -rw-r--r-- | drivers/target/tcm_fc/tfc_io.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/target/tcm_fc/tfc_io.c b/drivers/target/tcm_fc/tfc_io.c index 2b693eefac5..dc7c0db26e2 100644 --- a/drivers/target/tcm_fc/tfc_io.c +++ b/drivers/target/tcm_fc/tfc_io.c @@ -81,6 +81,8 @@ int ft_queue_data_in(struct se_cmd *se_cmd) void *from; void *to = NULL; + if (cmd->aborted) + return 0; ep = fc_seq_exch(cmd->seq); lport = ep->lp; cmd->seq = lport->tt.seq_start_next(cmd->seq); |