diff options
| author | Luben Tuikov <ltuikov@yahoo.com> | 2011-07-26 23:10:48 -0700 |
|---|---|---|
| committer | Jonas ABERG <jonas.aberg@stericsson.com> | 2011-10-28 11:07:57 +0200 |
| commit | 349c3252a76d550a223b70d8af19a8b3261a9ffa (patch) | |
| tree | 1b05a7b391e00f364abfe9fa7cf267dd8866959c | |
| parent | 941d08436583bda941ca04d5f46bfd30dec79414 (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: Greg Kroah-Hartman <gregkh@suse.de>
Change-Id: I78c093bbdd8786a6bd711224b7e2007b6f99bcf4
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35611
Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.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 874e29d9533..f84084bba2f 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -849,6 +849,9 @@ 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; } |