From: Arnd Bergmann <arnd@kernel.org>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Don.Brace@microchip.com, slyich@gmail.com,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
storagedev@microchip.com, scsi <linux-scsi@vger.kernel.org>,
"linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
jszczype@redhat.com, Scott.Benesh@microchip.com,
Scott.Teel@microchip.com, thenzl@redhat.com,
"Martin K. Petersen" <martin.petersen@oracle.com>
Subject: Re: [bisected] 5.12-rc1 hpsa regression: "scsi: hpsa: Correct dev cmds outstanding for retried cmds" breaks hpsa P600
Date: Fri, 5 Mar 2021 14:31:52 +0100 [thread overview]
Message-ID: <CAK8P3a0EhxvQ3pP6iMwHdR3RwF3CcAaWvfodPnzPip2iW2wBgQ@mail.gmail.com> (raw)
In-Reply-To: <CAMuHMdVLFfSoC-UYW+3sijeZhLf9xt3rqS=7LTYhzX_1RDxpYA@mail.gmail.com>
On Fri, Mar 5, 2021 at 10:24 AM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Fri, Mar 5, 2021 at 12:26 AM <Don.Brace@microchip.com> wrote:
> > > > On 3/2/21 11:26 PM, Sergei Trofimovich wrote:
> > struct CommandList {
> > struct CommandListHeader Header; /* 0 20 */
> > struct RequestBlock Request; /* 20 20 */
> > struct ErrDescriptor ErrDesc; /* 40 12 */
> > struct SGDescriptor SG[32]; /* 52 512 */
> > /* --- cacheline 8 boundary (512 bytes) was 52 bytes ago --- */
> > u32 busaddr; /* 564 4 */
> > struct ErrorInfo * err_info; /* 568 8 */
> > /* --- cacheline 9 boundary (576 bytes) --- */
> > struct ctlr_info * h; /* 576 8 */
> > int cmd_type; /* 584 4 */
> > long int cmdindex; /* 588 8 */
> > struct completion * waiting; /* 596 8 */
> > struct scsi_cmnd * scsi_cmd; /* 604 8 */
> > struct work_struct work; /* 612 32 */
> > /* --- cacheline 10 boundary (640 bytes) was 4 bytes ago --- */
> > struct hpsa_scsi_dev_t * phys_disk; /* 644 8 */
> > struct hpsa_scsi_dev_t * device; /* 652 8 */
> > bool retry_pending; /* 660 1 */
> > atomic_t refcount; /* 661 4 */
>
> How come this atomic_t is no longer aligned to its natural alignment?
There is a
#pragma pack(1)
in linux 203 of this file!
It looks like some of the members in struct raid_map_data
and struct CommandListHeader need to be annotated as packed,
but the file accidentally packs everything until the '#pragma pack()'
in line 875, including the kernel-side CommandList data structure
that clearly must not be packed.
Arnd
next prev parent reply other threads:[~2021-03-05 13:33 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210222230519.73f3e239@sf>
2021-02-22 23:34 ` 5.11 regression: "ia64: add support for TIF_NOTIFY_SIGNAL" breaks ia64 boot Jens Axboe
2021-02-22 23:55 ` John Paul Adrian Glaubitz
[not found] ` <20210223083507.43b5a6dd@sf>
2021-02-23 9:13 ` John Paul Adrian Glaubitz
2021-02-23 12:36 ` John Paul Adrian Glaubitz
[not found] ` <20210223192743.0198d4a9@sf>
[not found] ` <20210302222630.5056f243@sf>
2021-03-02 22:31 ` John Paul Adrian Glaubitz
2021-03-03 0:22 ` [bisected] 5.12-rc1 hpsa regression: "scsi: hpsa: Correct dev cmds outstanding for retried cmds" breaks hpsa P600 Sergei Trofimovich
2021-03-03 8:55 ` Sergei Trofimovich
2021-03-03 17:33 ` Don.Brace
[not found] ` <20210303220401.501449e5@sf>
2021-03-04 17:00 ` Don.Brace
2021-03-05 13:26 ` Tomas Henzl
2021-03-12 22:27 ` [PATCH] hpsa: fix boot on ia64 (atomic_t alignment) Sergei Trofimovich
2021-03-16 16:30 ` Don.Brace
2021-03-16 18:28 ` Arnd Bergmann
2021-03-17 2:25 ` Martin K. Petersen
2021-03-17 13:19 ` David Laight
2021-03-17 19:06 ` Don.Brace
2021-03-17 17:28 ` John Paul Adrian Glaubitz
2021-03-27 10:24 ` Sergei Trofimovich
2021-03-24 7:08 ` John Paul Adrian Glaubitz
2021-03-24 18:37 ` Don.Brace
2021-03-29 11:25 ` John Paul Adrian Glaubitz
2021-03-29 14:22 ` Arnd Bergmann
2021-03-30 3:02 ` Martin K. Petersen
2021-03-30 7:19 ` [PATCH v2 1/3] hpsa: use __packed on individual structs, not header-wide Sergei Trofimovich
2021-03-30 7:19 ` [PATCH v2 2/3] hpsa: fix boot on ia64 (atomic_t alignment) Sergei Trofimovich
2021-03-30 7:19 ` [PATCH v2 3/3] hpsa: add an assert to prevent from __packed reintroduction Sergei Trofimovich
2021-03-30 7:34 ` Arnd Bergmann
2021-04-02 14:40 ` Elliott, Robert (Servers)
2021-04-03 14:51 ` Sergei Trofimovich
2021-03-30 7:30 ` [PATCH v2 1/3] hpsa: use __packed on individual structs, not header-wide Arnd Bergmann
2021-03-30 7:43 ` Arnd Bergmann
2021-04-02 3:54 ` Martin K. Petersen
2021-04-15 18:41 ` Don.Brace
2021-03-05 9:22 ` [bisected] 5.12-rc1 hpsa regression: "scsi: hpsa: Correct dev cmds outstanding for retried cmds" breaks hpsa P600 Geert Uytterhoeven
2021-03-05 13:31 ` Arnd Bergmann [this message]
2021-03-05 20:45 ` Don.Brace
2021-03-03 15:42 ` Don.Brace
2021-03-17 17:42 ` 5.11 regression: "ia64: add support for TIF_NOTIFY_SIGNAL" breaks ia64 boot John Paul Adrian Glaubitz
2021-03-17 17:53 ` John Paul Adrian Glaubitz
[not found] ` <20210222235359.75d1a912@sf>
2021-02-23 0:34 ` Jens Axboe
2021-02-23 0:41 ` Jens Axboe
2021-02-23 0:43 ` Jens Axboe
[not found] ` <20210223080830.23bccdbf@sf>
2021-03-02 22:07 ` Sergei Trofimovich
2021-03-02 22:31 ` Jens Axboe
[not found] ` <20210302232716.353ed49b@sf>
2021-03-03 0:34 ` Jens Axboe
2021-03-03 3:51 ` Jens Axboe
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