This is a note to let you know that I've just added the patch titled
scsi: libsas: fix memory leak in sas_smp_get_phy_events()
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: scsi-libsas-fix-memory-leak-in-sas_smp_get_phy_events.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Mon Apr 9 10:16:32 CEST 2018
From: Jason Yan yanaijie@huawei.com Date: Thu, 4 Jan 2018 21:04:31 +0800 Subject: scsi: libsas: fix memory leak in sas_smp_get_phy_events()
From: Jason Yan yanaijie@huawei.com
[ Upstream commit 4a491b1ab11ca0556d2fda1ff1301e862a2d44c4 ]
We've got a memory leak with the following producer:
while true; do cat /sys/class/sas_phy/phy-1:0:12/invalid_dword_count >/dev/null; done
The buffer req is allocated and not freed after we return. Fix it.
Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver") Signed-off-by: Jason Yan yanaijie@huawei.com CC: John Garry john.garry@huawei.com CC: chenqilin chenqilin2@huawei.com CC: chenxiang chenxiang66@hisilicon.com Reviewed-by: Christoph Hellwig hch@lst.de Reviewed-by: Hannes Reinecke hare@suse.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/libsas/sas_expander.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -695,6 +695,7 @@ int sas_smp_get_phy_events(struct sas_ph phy->phy_reset_problem_count = scsi_to_u32(&resp[24]);
out: + kfree(req); kfree(resp); return res;
Patches currently in stable-queue which might be from yanaijie@huawei.com are
queue-4.15/scsi-libsas-initialize-sas_phy-status-according-to-response-of-discover.patch queue-4.15/scsi-libsas-fix-error-when-getting-phy-events.patch queue-4.15/scsi-libsas-fix-memory-leak-in-sas_smp_get_phy_events.patch queue-4.15/scsi-libsas-use-dynamic-alloced-work-to-avoid-sas-event-lost.patch