Re: [PATCH 10/11] megaraid_sas : MFI MPT linked list corruption fix

2014-09-11 Thread Tomas Henzl
On 09/11/2014 04:48 AM, Kashyap Desai wrote: On Wed, Sep 10, 2014 at 8:36 PM, Tomas Henzl the...@redhat.com wrote: On 09/06/2014 03:25 PM, sumit.sax...@avagotech.com wrote: Problem statement: MFI link list in megaraid_sas driver is used from mfi-mpt pass-through commands. This list can be

Re: [PATCH 10/11] megaraid_sas : MFI MPT linked list corruption fix

2014-09-11 Thread Kashyap Desai
On Thu, Sep 11, 2014 at 5:53 PM, Tomas Henzl the...@redhat.com wrote: On 09/11/2014 04:48 AM, Kashyap Desai wrote: On Wed, Sep 10, 2014 at 8:36 PM, Tomas Henzl the...@redhat.com wrote: On 09/06/2014 03:25 PM, sumit.sax...@avagotech.com wrote: Problem statement: MFI link list in megaraid_sas

Re: [PATCH 10/11] megaraid_sas : MFI MPT linked list corruption fix

2014-09-11 Thread Tomas Henzl
On 09/11/2014 08:41 PM, Kashyap Desai wrote: On Thu, Sep 11, 2014 at 5:53 PM, Tomas Henzl the...@redhat.com wrote: On 09/11/2014 04:48 AM, Kashyap Desai wrote: On Wed, Sep 10, 2014 at 8:36 PM, Tomas Henzl the...@redhat.com wrote: On 09/06/2014 03:25 PM, sumit.sax...@avagotech.com wrote:

RE: [PATCH 10/11] megaraid_sas : MFI MPT linked list corruption fix

2014-09-11 Thread Kashyap Desai
] megaraid_sas : MFI MPT linked list corruption fix On 09/11/2014 08:41 PM, Kashyap Desai wrote: On Thu, Sep 11, 2014 at 5:53 PM, Tomas Henzl the...@redhat.com wrote: On 09/11/2014 04:48 AM, Kashyap Desai wrote: On Wed, Sep 10, 2014 at 8:36 PM, Tomas Henzl the...@redhat.com wrote: On 09/06/2014 03

Re: [PATCH 10/11] megaraid_sas : MFI MPT linked list corruption fix

2014-09-10 Thread Tomas Henzl
On 09/06/2014 03:25 PM, sumit.sax...@avagotech.com wrote: Problem statement: MFI link list in megaraid_sas driver is used from mfi-mpt pass-through commands. This list can be corrupted due to many possible race conditions in driver and eventually we may see kernel panic. One example -

Re: [PATCH 10/11] megaraid_sas : MFI MPT linked list corruption fix

2014-09-10 Thread Kashyap Desai
On Wed, Sep 10, 2014 at 8:36 PM, Tomas Henzl the...@redhat.com wrote: On 09/06/2014 03:25 PM, sumit.sax...@avagotech.com wrote: Problem statement: MFI link list in megaraid_sas driver is used from mfi-mpt pass-through commands. This list can be corrupted due to many possible race conditions

[PATCH 10/11] megaraid_sas : MFI MPT linked list corruption fix

2014-09-06 Thread Sumit.Saxena
Problem statement: MFI link list in megaraid_sas driver is used from mfi-mpt pass-through commands. This list can be corrupted due to many possible race conditions in driver and eventually we may see kernel panic. One example - MFI frame is freed from calling process as driver send command