This is a note to let you know that I've just added the patch titled
scsi: hpsa: Fix error handling in hpsa_add_sas_host()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-hpsa-fix-error-handling-in-hpsa_add_sas_host.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit db60064ca92d5c82e1ff6e10f5f7b1e11c6fb748
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Thu Nov 10 23:11:29 2022 +0800
scsi: hpsa: Fix error handling in hpsa_add_sas_host()
[ Upstream commit 4ef174a3ad9b5d73c1b6573e244ebba2b0d86eac ]
hpsa_sas_port_add_phy() does:
...
sas_phy_add() -> may return error here
sas_port_add_phy()
...
Whereas hpsa_free_sas_phy() does:
...
sas_port_delete_phy()
sas_phy_delete()
...
If hpsa_sas_port_add_phy() returns an error, hpsa_free_sas_phy() can not be
called to free the memory because the port and the phy have not been added
yet.
Replace hpsa_free_sas_phy() with sas_phy_free() and kfree() to avoid kernel
crash in this case.
Fixes: d04e62b9d63a ("hpsa: add in sas transport class")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221110151129.394389-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 1a4fc8b8a9cd..392dfc8f3cbb 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -9700,7 +9700,8 @@ static int hpsa_add_sas_host(struct ctlr_info *h)
return 0;
free_sas_phy:
- hpsa_free_sas_phy(hpsa_sas_phy);
+ sas_phy_free(hpsa_sas_phy->phy);
+ kfree(hpsa_sas_phy);
free_sas_port:
hpsa_free_sas_port(hpsa_sas_port);
free_sas_node:
