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target: Prevent transport_send_task_abort when CHECK_CONDITION status

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commit c252f00347 upstream.

This patch fixes a bug where transport_send_task_abort() could be called
during LUN_RESET to return SAM_STAT_TASK_ABORTED + tfo->queue_status(), when
SCF_SENT_CHECK_CONDITION -> tfo->queue_status() has already been sent from
within another context via transport_send_check_condition_and_sense().

Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Nicholas Bellinger
2011-09-29 14:22:13 -07:00
committed by Greg Kroah-Hartman
parent 15e2ab5ff4
commit 6f47552250
1 changed files with 9 additions and 0 deletions
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9
drivers/target/target_core_transport.c
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@@ -4920,6 +4920,15 @@ EXPORT_SYMBOL(transport_check_aborted_status);
void transport_send_task_abort(struct se_cmd *cmd)
{
unsigned long flags;
spin_lock_irqsave(&cmd->t_state_lock, flags);
if (cmd->se_cmd_flags & SCF_SENT_CHECK_CONDITION) {
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
return;
}
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
/*
* If there are still expected incoming fabric WRITEs, we wait
* until until they have completed before sending a TASK_ABORTED