RE: [PATCH v3] scsi: avoid potential deadloop in iscsi_if_rx func

From: wubo (T)
Date: Thu Nov 14 2019 - 07:46:58 EST


Hi,

> On 11/12/19 5:37 PM, Martin K. Petersen wrote:
> >
> >> In iscsi_if_rx func, after receiving one request through
> >> iscsi_if_recv_msg func, iscsi_if_send_reply will be called to try to
> >> reply the request in do-loop. If the return of iscsi_if_send_reply
> >> func return -EAGAIN all the time, one deadloop will occur.
> >>
> >> For example, a client only send msg without calling recvmsg func,
> >> then it will result in the watchdog soft lockup.
> >> The details are given as follows,
> >
> > Lee/Chris/Ulrich: Please review!
> >
>
>
> Okay, after looking again at the thread, I do have some additional feedback for
> the patch submitter.
>
> You should put your "changes in V2, V3, ..." above the patch line (the
> "-- " on a line by itself), not as part of the patch.
>
> Also, as long as you are making one last round of changes, please change
> "deadloop" to "deadlock" in your patch subject, as deadloop is not a word.
>

Okay, I will correct it in V4.

> Lastly, the "Suggested-by" lines you added are fine, but that generally means
> that person suggested the patch, not changes. For folks that suggest changes,
> it's up to them to say they like or do not like your changes after you make them,
> at which point they can add their "Reviewed-by" tag if they wish.
>
> Please feel free to send your patch to me directly, before publishing, if you
> would like a review before publishing again.

Okay, Thanks.
>
> --
> Lee