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SubjectRe: [PATCH v4 0/9] scsi:scsi_debug: Add error injection for single device
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On 2023/8/15 20:23, Wenchao Hao wrote:
> The original error injection mechanism was based on scsi_host which
> could not inject fault for a single SCSI device.
>
> This patchset provides the ability to inject errors for a single
> SCSI device. Now we supports inject timeout errors, queuecommand
> errors, and hostbyte, driverbyte, statusbyte, and sense data for
> specific SCSI Command. Two new error injection is defined to make
> abort command or reset LUN failed.
>
> Besides error injection for single device, this patchset add a
> new interface to make reset target failed for each scsi_target.
>
> The first two patch add an debugfs interface to add and inquiry single
> device's error injection info; the third patch defined how to remove
> an injection which has been added. The following 5 patches use the
> injection info and generate the related error type. The last one just
> Add a new interface to make reset target failed.
>

Friendly ping...

> V4:
> - Fix BUG_ON triggered by schedule in atomic context when rmmod scsi_debug
> Closes: https://lore.kernel.org/oe-lkp/202308031027.5941ce5f-oliver.sang@intel.com
>
> V3:
> - Add two more error types to fail abort command and lun reset
> - Fix memleak when rmmod scsi_debug without clearing errors injected
> - Fix memkeak because did not implement release in sdebug_error_fops
> - Fix possible NULL point access in scsi_debug_slave_destroy
> - Move specific error type's description to each single patch which
> implement this error type
> - Add interface to make target reset fail
>
> V2:
> - Using debugfs rather than sysfs attribute interface to manage error
>
> Wenchao Hao (9):
> scsi:scsi_debug: create scsi_debug directory in the debugfs filesystem
> scsi:scsi_debug: Add interface to manage single device's error inject
> scsi:scsi_debug: Define grammar to remove added error injection
> scsi:scsi_debug: timeout command if the error is injected
> scsi:scsi_debug: Return failed value if the error is injected
> scsi:scsi_debug: set command's result and sense data if the error is injected
> scsi:scsi_debug: Add new error injection abort failed
> scsi:scsi_debug: Add new error injection reset lun failed
> scsi:scsi_debug: Add debugfs interface to fail target reset
>
> drivers/scsi/scsi_debug.c | 512 +++++++++++++++++++++++++++++++++++++-
> 1 file changed, 507 insertions(+), 5 deletions(-)
>

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