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target: Fix target_sense_desc_format NULL pointer dereference

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This patch allows target_sense_desc_format() to be called without a
valid se_device pointer, which can occur during an early exception
ahead of transport_lookup_cmd_lun() setting up se_cmd->se_device.

This addresses a v4.3-rc1 specific NULL pointer dereference
regression introduced by commit 4e4937e8.

Cc: Sagi Grimberg <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
This commit is contained in:
Nicholas Bellinger 2015-09-15 23:07:45 -07:00
commit f3bb467ff6
1 changed files with 1 additions and 1 deletions
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2
drivers/target/target_core_hba.c
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@ -187,5 +187,5 @@ core_delete_hba(struct se_hba *hba)
bool target_sense_desc_format(struct se_device *dev)
{
return dev->transport->get_blocks(dev) > U32_MAX;
return (dev) ? dev->transport->get_blocks(dev) > U32_MAX : false;
}