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crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init

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[ Upstream commit 8609f5cfdc ]

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 <ztong0001@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Fixes: 25c6ffb249 ("crypto: qat - check if PF is running")
Acked-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tong Zhang 2021-03-18 23:40:00 -04:00 • committed by Greg Kroah-Hartman
commit 1f50392650
3 changed files with 6 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/crypto/qat/qat_c3xxxvf/adf_drv.c
View file

@ -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;

4
drivers/crypto/qat/qat_c62xvf/adf_drv.c
View file

@ -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;

4
drivers/crypto/qat/qat_dh895xccvf/adf_drv.c
View file

@ -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;