Damian Muszynski 226fc408c5 crypto: qat - resolve race condition during AER recovery ... [ Upstream commit 7d42e09760 ] During the PCI AER system's error recovery process, the kernel driver may encounter a race condition with freeing the reset_data structure's memory. If the device restart will take more than 10 seconds the function scheduling that restart will exit due to a timeout, and the reset_data structure will be freed. However, this data structure is used for completion notification after the restart is completed, which leads to a UAF bug. This results in a KFENCE bug notice. BUG: KFENCE: use-after-free read in adf_device_reset_worker+0x38/0xa0 [intel_qat] Use-after-free read at 0x00000000bc56fddf (in kfence-#142): adf_device_reset_worker+0x38/0xa0 [intel_qat] process_one_work+0x173/0x340 To resolve this race condition, the memory associated to the container of the work_struct is freed on the worker if the timeout expired, otherwise on the function that schedules the worker. The timeout detection can be done by checking if the caller is still waiting for completion or not by using completion_done() function. Fixes: d8cba25d2c ("crypto: qat - Intel(R) QAT driver framework") Cc: <stable@vger.kernel.org> Signed-off-by: Damian Muszynski <damian.muszynski@intel.com> Reviewed-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>		2024-04-03 15:19:26 +02:00
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qat_4xxx	crypto: qat - fix error return code in adf_probe	2022-12-31 13:32:36 +01:00
qat_c3xxx	crypto: qat - fix ETR sources enabled by default on GEN2 devices	2022-04-15 16:34:26 +08:00
qat_c3xxxvf	crypto: qat - config VFs based on ring-to-svc mapping	2021-12-24 14:18:27 +11:00
qat_c62x	crypto: qat - fix ETR sources enabled by default on GEN2 devices	2022-04-15 16:34:26 +08:00
qat_c62xvf	crypto: qat - config VFs based on ring-to-svc mapping	2021-12-24 14:18:27 +11:00
qat_common	crypto: qat - resolve race condition during AER recovery	2024-04-03 15:19:26 +02:00
qat_dh895xcc	crypto: qat - replace disable_vf2pf_interrupts()	2022-04-15 16:34:27 +08:00
qat_dh895xccvf	crypto: qat - config VFs based on ring-to-svc mapping	2021-12-24 14:18:27 +11:00
Kconfig	crypto: qat - Removes the x86 dependency on the QAT drivers	2022-06-24 17:12:29 +08:00
Makefile	crypto: qat - add qat_4xxx driver	2020-11-20 14:45:34 +11:00