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| author | Ju, Seokmann <Seokmann.Ju@lsil.com> | 2006-04-27 02:33:06 -0700 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-04-27 14:08:53 -0500 |
| commit | c005fb4fb2d23ba29ad21dee5042b2f8451ca8ba (patch) | |
| tree | 26cd8703ee65d01e611fb0990f502c56abc098b6 /Documentation/scsi | |
| parent | 509e5e5d206ff7ba08011b61a882d09369ec20c3 (diff) | |
| download | linux-stable-c005fb4fb2d23ba29ad21dee5042b2f8451ca8ba.tar.gz linux-stable-c005fb4fb2d23ba29ad21dee5042b2f8451ca8ba.tar.bz2 linux-stable-c005fb4fb2d23ba29ad21dee5042b2f8451ca8ba.zip | |
[SCSI] megaraid_{mm,mbox}: fix a bug in reset handler
When abort failed, the driver gets reset handleer called. In the reset
handler, driver calls 'scsi_done()' callback for same SCSI command packet
(struct scsi_cmnd) multiple times if there are multiple SCSI command packet
in the pend_list. More over, if there are entry in the pend_lsit with
IOCTL packet associated, the driver returns it to wrong free_list so that,
in turn, the driver could end up with 'NULL pointer dereference..' during
I/O command building with incorrect resource.
Also, the patch contains several minor/cosmetic changes besides this.
Signed-off-by: Seokmann Ju <seokmann.ju@lsil.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'Documentation/scsi')
| -rw-r--r-- | Documentation/scsi/ChangeLog.megaraid | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/scsi/ChangeLog.megaraid b/Documentation/scsi/ChangeLog.megaraid index 09f6300eda4b..c173806c91fa 100644 --- a/Documentation/scsi/ChangeLog.megaraid +++ b/Documentation/scsi/ChangeLog.megaraid @@ -1,3 +1,28 @@ +Release Date : Mon Apr 11 12:27:22 EST 2006 - Seokmann Ju <sju@lsil.com> +Current Version : 2.20.4.8 (scsi module), 2.20.2.6 (cmm module) +Older Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module) + +1. Fixed a bug in megaraid_reset_handler(). + Customer reported "Unable to handle kernel NULL pointer dereference + at virtual address 00000000" when system goes to reset condition + for some reason. It happened randomly. + Root Cause: in the megaraid_reset_handler(), there is possibility not + returning pending packets in the pend_list if there are multiple + pending packets. + Fix: Made the change in the driver so that it will return all packets + in the pend_list. + +2. Added change request. + As found in the following URL, rmb() only didn't help the + problem. I had to increase the loop counter to 0xFFFFFF. (6 F's) + http://marc.theaimsgroup.com/?l=linux-scsi&m=110971060502497&w=2 + + I attached a patch for your reference, too. + Could you check and get this fix in your driver? + + Best Regards, + Jun'ichi Nomura + Release Date : Fri Nov 11 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com> Current Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module) Older Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module) |