On Mon, Oct 16, 2023 at 10:04 AM Wenchao Hao <haowenchao2@xxxxxxxxxx> wrote: > > I am testing SCSI error handle with my previous scsi_debug error > injection patches, and found some issues when removing device and > error handler happened together. > > These issues are triggered because devices in removing would be skipped > when calling shost_for_each_device(). Friendly ping... > > Three issues are found: > 1. statistic info printed at beginning of scsi_error_handler is wrong > 2. device reset is not triggered > 3. IO requeued to request_queue would be hang after error handle > > V3: > - Update patch description > - Update comments of functions added > > V2: > - Fix IO hang by run all devices' queue after error handler > - Do not modify shost_for_each_device() directly but add a new > helper to iterate devices but do not skip devices in removing > > Wenchao Hao (4): > scsi: core: Add new helper to iterate all devices of host > scsi: scsi_error: Fix wrong statistic when print error info > scsi: scsi_error: Fix device reset is not triggered > scsi: scsi_core: Fix IO hang when device removing > > drivers/scsi/scsi.c | 46 ++++++++++++++++++++++++++------------ > drivers/scsi/scsi_error.c | 4 ++-- > drivers/scsi/scsi_lib.c | 2 +- > include/scsi/scsi_device.h | 25 ++++++++++++++++++--- > 4 files changed, 57 insertions(+), 20 deletions(-) > > -- > 2.32.0 >
