diff options
| author | Luben Tuikov <ltuikov@yahoo.com> | 2011-07-26 23:10:48 -0700 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-05-17 11:21:16 -0400 |
| commit | ac7def8f12f701e7abb06d6d43e260da63b87119 (patch) | |
| tree | 7453d087745fb37be83b6c9295e32e7401faa876 | |
| parent | 8b28676fa63d66d6db418952f5ef9db42f40a2da (diff) | |
libsas: remove expander from dev list on error
commit 5911e963d3718e306bcac387b83e259aa4228896 upstream.
If expander discovery fails (sas_discover_expander()), remove the
expander from the port device list (sas_ex_discover_expander()),
before freeing it. Else the list is corrupted and, e.g., when we
attempt to send SMP commands to other devices, the kernel oopses.
Signed-off-by: Luben Tuikov <ltuikov@yahoo.com>
Reviewed-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| -rw-r--r-- | drivers/scsi/libsas/sas_expander.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index c65af02dcfe8..fbf0a0952761 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -841,6 +841,9 @@ static struct domain_device *sas_ex_discover_expander( res = sas_discover_expander(child); if (res) { + spin_lock_irq(&parent->port->dev_list_lock); + list_del(&child->dev_list_node); + spin_unlock_irq(&parent->port->dev_list_lock); kfree(child); return NULL; } |