scsi: hisi_sas: Fix the race between IO completion and timeout for SMP/internal IO

Browse source

If SMP/internal IO times out, we will possibly free the task immediately.

However if the IO actually completes at the same time, the IO completion
may refer to task which has been freed.

So to solve the issue, flush the tasklet to finish IO completion before
free'ing slot/task.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

This commit is contained in:

Xiang Chen 2018-09-24 23:06:30 +08:00 • committed by Martin K. Petersen

parent 1668e3b6f8

commit 584f53fe5f

1 changed files with 46 additions and 9 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

53

drivers/scsi/hisi_sas/hisi_sas_main.c

View file