Re: [PATCH 0/3] Improve block device testing coverage

2017-03-31 Thread Eryu Guan
On Fri, Mar 31, 2017 at 10:43:19AM +0300, Dmitry Monakhov wrote: > Christoph Hellwig writes: > > > On Thu, Mar 30, 2017 at 05:19:01PM +0400, Dmitry Monakhov wrote: > >> During LSFMM we have discussed how to test lower-backend of linux IO-stack. > >> Common opinion was that

Re: kernel BUG at block/bio.c:1787! while initializing scsi_debug on ppc64 host

2016-01-05 Thread Eryu Guan
On Tue, Jan 05, 2016 at 06:58:25PM -0500, Martin K. Petersen wrote: > >>>>> "Eryu" == Eryu Guan <guane...@gmail.com> writes: > > Eryu> Any updates on this? It's still reproducible with 4.4-rc8 kernel, > Eryu> and still blocks some of my tests :)

Re: kernel BUG at block/bio.c:1787! while initializing scsi_debug on ppc64 host

2016-01-05 Thread Eryu Guan
On Fri, Dec 11, 2015 at 07:53:40PM +0800, Eryu Guan wrote: > Hi, > > I saw this kernel BUG_ON on 4.4-rc4 kernel, and this can be reproduced > easily on ppc64 host by: > > modprobe scsi_debug sector_size=512 physblk_exp=3 dev_size_mb=256 > > And I bisected to this

Re: kernel BUG at block/bio.c:1787! while initializing scsi_debug on ppc64 host

2015-12-15 Thread Eryu Guan
On Tue, Dec 15, 2015 at 09:27:14PM +0800, Ming Lei wrote: > On Tue, Dec 15, 2015 at 9:06 PM, Eryu Guan <guane...@gmail.com> wrote: > > On Tue, Dec 15, 2015 at 08:06:47PM +0800, Ming Lei wrote: > >> On Tue, Dec 15, 2015 at 7:20 PM, Eryu Guan <guane...@gmail.com> wrot

Re: kernel BUG at block/bio.c:1787! while initializing scsi_debug on ppc64 host

2015-12-15 Thread Eryu Guan
On Tue, Dec 15, 2015 at 11:38:41PM +0800, Ming Lei wrote: > On Tue, 15 Dec 2015 21:06:31 +0800 > Eryu Guan <guane...@gmail.com> wrote: > > > On Tue, Dec 15, 2015 at 08:06:47PM +0800, Ming Lei wrote: > > > On Tue, Dec 15, 2015 at 7:20 PM, Eryu Guan <guane...@gmai

Re: kernel BUG at block/bio.c:1787! while initializing scsi_debug on ppc64 host

2015-12-15 Thread Eryu Guan
On Fri, Dec 11, 2015 at 07:53:40PM +0800, Eryu Guan wrote: > Hi, > > I saw this kernel BUG_ON on 4.4-rc4 kernel, and this can be reproduced > easily on ppc64 host by: This is still reproducible with 4.4-rc5 kernel. Thanks, Eryu > > modprobe scsi_debug sector_size=512 physblk

Re: kernel BUG at block/bio.c:1787! while initializing scsi_debug on ppc64 host

2015-12-15 Thread Eryu Guan
On Tue, Dec 15, 2015 at 08:06:47PM +0800, Ming Lei wrote: > On Tue, Dec 15, 2015 at 7:20 PM, Eryu Guan <guane...@gmail.com> wrote: > > On Fri, Dec 11, 2015 at 07:53:40PM +0800, Eryu Guan wrote: > >> Hi, > >> > >> I saw this kernel BUG_ON on 4.4-rc4 kern

Re: kernel BUG at block/bio.c:1787! while initializing scsi_debug on ppc64 host

2015-12-15 Thread Eryu Guan
On Tue, Dec 15, 2015 at 01:29:59PM -0500, Martin K. Petersen wrote: > >>>>> "Eryu" == Eryu Guan <guane...@gmail.com> writes: > > Eryu, > > Does the patch below fix the issue? Unfortunately no, still BUG_ON. Thanks, Eryu > > -- > Martin

kernel BUG at block/bio.c:1787! while initializing scsi_debug on ppc64 host

2015-12-11 Thread Eryu Guan
Hi, I saw this kernel BUG_ON on 4.4-rc4 kernel, and this can be reproduced easily on ppc64 host by: modprobe scsi_debug sector_size=512 physblk_exp=3 dev_size_mb=256 And I bisected to this commit commit ca369d51b3e1649be4a72addd6d6a168cfb3f537 Author: Martin K. Petersen