From: "Nicholas A. Bellinger" <nab@linux-iscsi.org>
To: Andy Grover <agrover@redhat.com>
Cc: target-devel@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: Re: [PATCH 06/20] target: Eliminate usage of struct se_mem
Date: Mon, 18 Jul 2011 11:44:18 -0700 [thread overview]
Message-ID: <1311014658.16756.13.camel@haakon2.linux-iscsi.org> (raw)
In-Reply-To: <4E246A75.5000101@redhat.com>
On Mon, 2011-07-18 at 10:16 -0700, Andy Grover wrote:
> On 07/17/2011 12:57 PM, Nicholas A. Bellinger wrote:
> > Although this patch did not directly remove the memsets for newly
> > allocated pages used with transport_generic_map_mem_to_cmd(), the issue
> > as below of reproducable strangeness with control CDB payloads without
> > the explict memset of allocated pages. As much as I would have liked to
> > leave the memset out, I don't think it's safe to do. Added the
> > following:
> >
> > commit 7c7649750eb47035ac4fb0123f2e49c1c47c8a15
> > Author: Nicholas Bellinger <nab@linux-iscsi.org>
> > Date: Sun Jul 17 00:20:07 2011 -0700
> >
> > target/iscsi: Make iscsit_alloc_buffs explict memset allocated pages
>
> Hi nab, obviously if it's breaking things the memsets need to go back
> for now, but surely it's a sign that somewhere there's a bug. You only
> see corruption with control CDBs you say? Any more info on the
> strangeness you're seeing?
>
The immediate case that I ran into with the very latest iscsi-target
code was bogus output with 'sg_inq -i' (INQUIRY EVPD=0x83) in the
'Designation descriptor number 5' field.
next prev parent reply other threads:[~2011-07-18 18:53 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-07 22:33 [0/20] Patches from June 28 v2 Andy Grover
2011-07-07 22:33 ` [PATCH 01/20] target: Remove ifdeffed code in t_g_process_write Andy Grover
2011-07-07 22:33 ` [PATCH 02/20] target: Pass 2nd param of transport_split_cdb by value Andy Grover
2011-07-07 22:33 ` [PATCH 03/20] target: Make all control CDBs scatter-gather Andy Grover
2011-07-08 19:57 ` Christoph Hellwig
2011-07-09 0:02 ` Andy Grover
2011-07-09 0:35 ` Andy Grover
2011-07-07 22:33 ` [PATCH 04/20] target: Enforce 1 page max for control cdb buffer sizes Andy Grover
2011-07-08 19:58 ` Christoph Hellwig
2011-07-07 22:33 ` [PATCH 05/20] target: Remove direct ramdisk code Andy Grover
2011-07-08 19:59 ` Christoph Hellwig
2011-07-07 22:33 ` [PATCH 06/20] target: Eliminate usage of struct se_mem Andy Grover
2011-07-08 20:13 ` Christoph Hellwig
2011-07-09 0:38 ` Andy Grover
2011-07-07 22:33 ` [PATCH 07/20] target: Rename task_sg_num to task_sg_nents Andy Grover
2011-07-07 22:33 ` [PATCH 08/20] target: Remove custom debug macros for pr_debug. Use pr_err() Andy Grover
2011-07-07 22:33 ` [PATCH 09/20] target: Remove custom debug macros in non-iscsi fabrics Andy Grover
2011-07-07 22:33 ` [PATCH 10/20] target/iscsi: Remove iscsi_target_debug.h and usage of TRACE() & printk() Andy Grover
2011-07-07 22:33 ` [PATCH 11/20] target/iscsi: Remove SE_CMD macro Andy Grover
2011-07-07 22:33 ` [PATCH 12/20] target: Set WSNZ=1 in block limits VPD. Abort if WRITE_SAME sectors = 0 Andy Grover
2011-07-07 22:33 ` [PATCH 13/20] target: Remove transport do_se_mem_map callback Andy Grover
2011-07-07 22:33 ` [PATCH 14/20] target: When using kunmap_first_data_page, use goto-style err handling Andy Grover
2011-07-07 22:33 ` [PATCH 15/20] target: Further simplify transport_free_pages Andy Grover
2011-07-07 22:33 ` [PATCH 16/20] target: Redo task allocation return value handling Andy Grover
2011-07-07 22:33 ` [PATCH 17/20] target/core: Remove extra parentheses Andy Grover
2011-07-07 22:33 ` [PATCH 18/20] target: Extraneous paren removal in tcm_vhost and tcm_qla2xxx Andy Grover
2011-07-07 22:33 ` [PATCH 19/20] target/iscsi: Remove unneeded parens in conditional statements Andy Grover
2011-07-07 22:33 ` [PATCH 20/20] target/iscsi: Simplify two small bits Andy Grover
2011-07-09 1:18 ` [0/20] target: Patches for June 28 v3 Andy Grover
2011-07-17 19:32 ` Nicholas A. Bellinger
2011-07-09 1:18 ` [PATCH 01/20] target: Remove ifdeffed code in t_g_process_write Andy Grover
2011-07-09 1:18 ` [PATCH 02/20] target: Pass 2nd param of transport_split_cdb by value Andy Grover
2011-07-09 1:18 ` [PATCH 03/20] target: Make all control CDBs scatter-gather Andy Grover
2011-07-17 19:40 ` Nicholas A. Bellinger
2011-07-09 1:18 ` [PATCH 04/20] target: Enforce 1 page max for control cdb buffer sizes Andy Grover
2011-07-09 1:18 ` [PATCH 05/20] target: Remove direct ramdisk code Andy Grover
2011-07-09 1:18 ` [PATCH 06/20] target: Eliminate usage of struct se_mem Andy Grover
2011-07-17 19:57 ` Nicholas A. Bellinger
2011-07-18 17:16 ` Andy Grover
2011-07-18 18:44 ` Nicholas A. Bellinger [this message]
2011-07-19 4:56 ` Christoph Hellwig
2011-07-19 5:40 ` Nicholas A. Bellinger
2011-07-09 1:18 ` [PATCH 07/20] target: Rename task_sg_num to task_sg_nents Andy Grover
2011-07-09 1:18 ` [PATCH 08/20] target: Remove custom debug macros for pr_debug. Use pr_err() Andy Grover
2011-07-09 1:18 ` [PATCH 09/20] target: Remove custom debug macros in non-iscsi fabrics Andy Grover
2011-07-17 20:02 ` Nicholas A. Bellinger
2011-07-09 1:18 ` [PATCH 10/20] target/iscsi: Remove iscsi_target_debug.h and usage of TRACE() & printk() Andy Grover
2011-07-09 1:18 ` [PATCH 11/20] target/iscsi: Remove SE_CMD macro Andy Grover
2011-07-09 1:18 ` [PATCH 12/20] target: Set WSNZ=1 in block limits VPD. Abort if WRITE_SAME sectors = 0 Andy Grover
2011-07-09 1:18 ` [PATCH 13/20] target: Remove transport do_se_mem_map callback Andy Grover
2011-07-09 1:18 ` [PATCH 14/20] target: Further simplify transport_free_pages Andy Grover
2011-07-09 1:18 ` [PATCH 15/20] target: Redo task allocation return value handling Andy Grover
2011-07-09 1:18 ` [PATCH 16/20] target/core: Remove extra parentheses Andy Grover
2011-07-09 1:18 ` [PATCH 17/20] target: Extraneous paren removal in tcm_vhost and tcm_qla2xxx Andy Grover
2011-07-09 1:18 ` [PATCH 18/20] target/iscsi: Remove unneeded parens in conditional statements Andy Grover
2011-07-09 1:18 ` [PATCH 19/20] target/iscsi: Simplify two small bits Andy Grover
2011-07-09 1:18 ` [PATCH 20/20] target: change alloc_task call to take *cdb, not *cmd Andy Grover
2011-07-09 10:11 ` Christoph Hellwig
2011-07-10 22:41 ` Andy Grover
2011-07-11 15:28 ` Christoph Hellwig
2011-07-17 20:04 ` Nicholas A. Bellinger
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