[PATCH v3 2/2] crypto: qat: ADF_STATUS_PF_RUNNING should be set after adf_dev_init

[Tong Zhang]

ADF_STATUS_PF_RUNNING is (only) used and checked  by adf_vf2pf_shutdown()
before calling adf_iov_putmsg()->mutex_lock(vf2pf_lock), however the
vf2pf_lock is initialized in adf_dev_init(), which can fail and when it
fail, the vf2pf_lock is either not initialized or destroyed, a subsequent
use of vf2pf_lock will cause issue.
To fix this issue, only set this flag if adf_dev_init() returns 0.

[    7.178404] BUG: KASAN: user-memory-access in __mutex_lock.isra.0+0x1ac/0x7c0
[    7.180345] Call Trace:
[    7.182576]  mutex_lock+0xc9/0xd0
[    7.183257]  adf_iov_putmsg+0x118/0x1a0 [intel_qat]
[    7.183541]  adf_vf2pf_shutdown+0x4d/0x7b [intel_qat]
[    7.183834]  adf_dev_shutdown+0x172/0x2b0 [intel_qat]
[    7.184127]  adf_probe+0x5e9/0x600 [qat_dh895xccvf]

Signed-off-by: Tong Zhang <ztong0...@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevche...@gmail.com>
---
 drivers/crypto/qat/qat_c3xxxvf/adf_drv.c    | 4 ++--
 drivers/crypto/qat/qat_c62xvf/adf_drv.c     | 4 ++--
 drivers/crypto/qat/qat_dh895xccvf/adf_drv.c | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/qat/qat_c3xxxvf/adf_drv.c 
b/drivers/crypto/qat/qat_c3xxxvf/adf_drv.c
index 1d1532e8fb6d..067ca5e17d38 100644
--- a/drivers/crypto/qat/qat_c3xxxvf/adf_drv.c
+++ b/drivers/crypto/qat/qat_c3xxxvf/adf_drv.c
@@ -184,12 +184,12 @@ static int adf_probe(struct pci_dev *pdev, const struct 
pci_device_id *ent)
        if (ret)
                goto out_err_free_reg;
 
-       set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
-
        ret = adf_dev_init(accel_dev);
        if (ret)
                goto out_err_dev_shutdown;
 
+       set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
        ret = adf_dev_start(accel_dev);
        if (ret)
                goto out_err_dev_stop;
diff --git a/drivers/crypto/qat/qat_c62xvf/adf_drv.c 
b/drivers/crypto/qat/qat_c62xvf/adf_drv.c
index 04742a6d91ca..51ea88c0b17d 100644
--- a/drivers/crypto/qat/qat_c62xvf/adf_drv.c
+++ b/drivers/crypto/qat/qat_c62xvf/adf_drv.c
@@ -184,12 +184,12 @@ static int adf_probe(struct pci_dev *pdev, const struct 
pci_device_id *ent)
        if (ret)
                goto out_err_free_reg;
 
-       set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
-
        ret = adf_dev_init(accel_dev);
        if (ret)
                goto out_err_dev_shutdown;
 
+       set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
        ret = adf_dev_start(accel_dev);
        if (ret)
                goto out_err_dev_stop;
diff --git a/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c 
b/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c
index c972554a755e..29999da716cc 100644
--- a/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c
+++ b/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c
@@ -184,12 +184,12 @@ static int adf_probe(struct pci_dev *pdev, const struct 
pci_device_id *ent)
        if (ret)
                goto out_err_free_reg;
 
-       set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
-
        ret = adf_dev_init(accel_dev);
        if (ret)
                goto out_err_dev_shutdown;
 
+       set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
        ret = adf_dev_start(accel_dev);
        if (ret)
                goto out_err_dev_stop;
-- 
2.25.1