[PATCH AUTOSEL 5.4 051/134] scsi: qla2xxx: Fix a dma_pool_free() call

Sasha Levin
2019-12-11T16:05:54Z

From: Bart Van Assche <bvanassche@acm.org>

[ Upstream commit 162b805e38327135168cb0938bd37b131b481cb0 ]

This patch fixes the following kernel warning:

DMA-API: qla2xxx 0000:00:0a.0: device driver frees DMA memory with different size [device address=0x00000000c7b60000] [map size=4088 bytes] [unmap size=512 bytes]
WARNING: CPU: 3 PID: 1122 at kernel/dma/debug.c:1021 check_unmap+0x4d0/0xbd0
CPU: 3 PID: 1122 Comm: rmmod Tainted: G O 5.4.0-rc1-dbg+ #1
RIP: 0010:check_unmap+0x4d0/0xbd0
Call Trace:
debug_dma_free_coherent+0x123/0x173
dma_free_attrs+0x76/0xe0
qla2x00_mem_free+0x329/0xc40 [qla2xxx_scst]
qla2x00_free_device+0x170/0x1c0 [qla2xxx_scst]
qla2x00_remove_one+0x4f0/0x6d0 [qla2xxx_scst]
pci_device_remove+0xd5/0x1f0
device_release_driver_internal+0x159/0x280
driver_detach+0x8b/0xf2
bus_remove_driver+0x9a/0x15a
driver_unregister+0x51/0x70
pci_unregister_driver+0x2d/0x130
qla2x00_module_exit+0x1c/0xbc [qla2xxx_scst]
__x64_sys_delete_module+0x22a/0x300
do_syscall_64+0x6f/0x2e0
entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: 3f006ac342c0 ("scsi: qla2xxx: Secure flash update support for ISP28XX") # v5.2-rc1~130^2~270.
Cc: Michael Hernandez <mhernandez@marvell.com>
Cc: Himanshu Madhani <hmadhani@marvell.com>
Link: https://lore.kernel.org/r/20191106044226.5207-3-bvanassche@acm.org
Reviewed-by: Martin Wilck <mwilck@suse.com>
Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/qla2xxx/qla_os.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 726ad4cbf4a64..9fc0789c9d3c3 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -4666,7 +4666,8 @@ qla2x00_mem_free(struct qla_hw_data *ha)
ha->sfp_data = NULL;

if (ha->flt)
- dma_free_coherent(&ha->pdev->dev, SFP_DEV_SIZE,
+ dma_free_coherent(&ha->pdev->dev,
+ sizeof(struct qla_flt_header) + FLT_REGIONS_SIZE,
ha->flt, ha->flt_dma);
ha->flt = NULL;
ha->flt_dma = 0;
--
2.20.1