Dave Jiang 8affd8a4b5 dmaengine: idxd: fix missed completion on abort path ... Ming reported that with the abort path of the descriptor submission, there can be a window where a completed descriptor can be missed to be completed by the irq completion thread: CPU A CPU B Submit (successful) Submit (fail) irq_process_work_list() // empty llist_abort_desc() // remove all descs from pending list irq_process_pending_llist() // empty exit idxd_wq_thread() with no processing Add opportunistic descriptor completion in the abort path in order to remove the missed completion. Fixes: 6b4b87f2c3 ("dmaengine: idxd: fix submission race window") Reported-by: Ming Li <ming4.li@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/163898288714.443911.16084982766671976640.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>		2021-12-13 11:10:41 +05:30
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bus.c	Bus: Make remove callback return void tag	2021-07-27 19:12:14 +05:30
cdev.c	dmaengine: idxd: remove interrupt disable for dev_lock	2021-08-29 19:14:20 +05:30
compat.c	dmaengine: idxd: Fix a possible NULL pointer dereference	2021-08-02 12:35:10 +05:30
device.c	dmaengine: idxd: cleanup completion record allocation	2021-10-28 22:54:44 +05:30
dma.c	dmaengine: idxd: fix resource leak on dmaengine driver disable	2021-10-28 22:54:45 +05:30
idxd.h	dmaengine: idxd: cleanup completion record allocation	2021-10-28 22:54:44 +05:30
init.c	dmanegine: idxd: fix resource free ordering on driver removal	2021-10-25 11:51:22 +05:30
irq.c	dmaengine: idxd: fix calling wq quiesce inside spinlock	2021-11-22 12:29:50 +05:30
Makefile	dmaengine: idxd: move dsa_drv support to compatible mode	2021-07-21 10:09:16 +05:30
perfmon.c	dmaengine: idxd: Add IDXD performance monitor support	2021-04-25 21:46:12 +05:30
perfmon.h	dmaengine: idxd: Add IDXD performance monitor support	2021-04-25 21:46:12 +05:30
registers.h	dmaengine: idxd: add halt interrupt support	2021-10-25 12:09:15 +05:30
submit.c	dmaengine: idxd: fix missed completion on abort path	2021-12-13 11:10:41 +05:30
sysfs.c	dmaengine: idxd: remove interrupt disable for dev_lock	2021-08-29 19:14:20 +05:30