linux/drivers/crypto/qat/qat_c3xxxvf
Tong Zhang 8609f5cfdc crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init
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>
2021-03-26 20:02:36 +11:00
..
adf_c3xxxvf_hw_data.c crypto: qat - split transport CSR access logic 2020-10-30 17:34:47 +11:00
adf_c3xxxvf_hw_data.h crypto: qat - convert to SPDX License Identifiers 2020-06-18 17:19:44 +10:00
adf_drv.c crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init 2021-03-26 20:02:36 +11:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00