Date: Mon, 19 May 1997 21:27:28 +0900 (JST) From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/3629: /sys/scsi/pt.c doesn't initialize buf_queue Message-ID: <199705191227.VAA00503@ichi.sat.t.u-tokyo.ac.jp> Resent-Message-ID: <199705191230.FAA18387@hub.freebsd.org>
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>Number: 3629
>Category: kern
>Synopsis: /sys/scsi/pt.c doesn't initialize buf_queue
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon May 19 05:30:01 PDT 1997
>Last-Modified:
>Originator: Hidetoshi Shimokawa
>Organization:
Univ. of Tokyo
>Release: FreeBSD 2.2-STABLE i386
>Environment:
FreeBSD-2.2 + EPSON scanner (processor type SCSI device)
>Description:
pt.c is using pt->buf_queue without initialization.
>How-To-Repeat:
I found this bug while writing scanner control program.
>Fix:
Please apply the following patch
*** pt.c.org Sat Sep 7 08:09:12 1996
--- pt.c Mon May 19 21:00:56 1997
***************
*** 86,92 ****
0,
{0, 0},
SDEV_ONCE_ONLY, /* Only one open allowed */
! 0,
"Processor",
ptopen,
sizeof(struct scsi_data),
--- 86,92 ----
0,
{0, 0},
SDEV_ONCE_ONLY, /* Only one open allowed */
! ptattach,
"Processor",
ptopen,
sizeof(struct scsi_data),
***************
*** 98,103 ****
--- 98,112 ----
0,
pt_strategy,
};
+
+ static errval
+ ptattach(struct scsi_link *sc_link)
+ {
+ struct scsi_data *pt = sc_link->sd;
+
+ TAILQ_INIT(&pt->buf_queue);
+ return 0;
+ }
/*
* ptstart looks to see if there is a buf waiting for the device
And, I appreciate if you add the following entry in scsiconf.c
I would like to submit scanner control program as port later.
#if NPT > 0
{
T_PROCESSOR, T_PROCESSOR, T_FIXED, "EPSON SC", "*", "*",
"pt", SC_ONE_LU
},
#endif /* NPT */
>Audit-Trail:
>Unformatted:
help
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