Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-08-11 Thread Ulf Hansson
On 9 August 2014 06:03, John Stultz wrote: > On Fri, Aug 8, 2014 at 5:32 PM, Theodore Ts'o wrote: >> On Fri, Aug 08, 2014 at 05:17:54PM -0700, John Stultz wrote: >>> On 08/08/2014 05:15 PM, Kees Cook wrote: >>> > On Fri, Aug 8, 2014 at 2:14 PM, John Stultz >>> > wrote: >>> >> I sunk a couple of

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-08-08 Thread John Stultz
On Fri, Aug 8, 2014 at 5:32 PM, Theodore Ts'o wrote: > On Fri, Aug 08, 2014 at 05:17:54PM -0700, John Stultz wrote: >> On 08/08/2014 05:15 PM, Kees Cook wrote: >> > On Fri, Aug 8, 2014 at 2:14 PM, John Stultz wrote: >> >> I sunk a couple of weeks bisecting to try to narrow down the more >> >> spo

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-08-08 Thread Theodore Ts'o
On Fri, Aug 08, 2014 at 05:17:54PM -0700, John Stultz wrote: > On 08/08/2014 05:15 PM, Kees Cook wrote: > > On Fri, Aug 8, 2014 at 2:14 PM, John Stultz wrote: > >> I sunk a couple of weeks bisecting to try to narrow down the more > >> sporadic issue, but was unsuccessful past the initial commit ab

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-08-08 Thread John Stultz
On 08/08/2014 05:15 PM, Kees Cook wrote: > On Fri, Aug 8, 2014 at 2:14 PM, John Stultz wrote: >> I sunk a couple of weeks bisecting to try to narrow down the more >> sporadic issue, but was unsuccessful past the initial commit above. >> Since then I've been far too swamped to spend any more time o

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-08-08 Thread Kees Cook
On Fri, Aug 8, 2014 at 2:14 PM, John Stultz wrote: > On 06/11/2014 10:35 PM, John Stultz wrote: >> I've been seeing some ext4 corruption with recent kernels under >> qemu-system-arm. >> >> This issue seems to crop up after shutting down uncleanly (terminating >> qemu), shortly after booting about

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-08-08 Thread John Stultz
On 06/11/2014 10:35 PM, John Stultz wrote: > I've been seeing some ext4 corruption with recent kernels under > qemu-system-arm. > > This issue seems to crop up after shutting down uncleanly (terminating > qemu), shortly after booting about 50% of the time. > > ext4/mmc related dmesg details are: >

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-06-16 Thread Ulf Hansson
On 16 June 2014 09:22, Jeff Chua wrote: > On Fri, Jun 13, 2014 at 8:28 PM, Ulf Hansson wrote: >> On 13 June 2014 01:51, John Stultz wrote: >>> On Wed, Jun 11, 2014 at 10:35 PM, John Stultz john.stu...@linaro.org> wrote: > >> I have quickly implemented my proposal 1). I am testing them on real >>

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-06-16 Thread Jeff Chua
On Fri, Jun 13, 2014 at 8:28 PM, Ulf Hansson wrote: > On 13 June 2014 01:51, John Stultz wrote: >> On Wed, Jun 11, 2014 at 10:35 PM, John Stultz john.stu...@linaro.org> wrote: > I have quickly implemented my proposal 1). I am testing them on real > HW now, will post the patches as soon as I can

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-06-13 Thread Ulf Hansson
On 13 June 2014 01:51, John Stultz wrote: > On Wed, Jun 11, 2014 at 10:35 PM, John Stultz wrote: >> Bisecting this points to: e7f3d22289e4307b3071cc18b1d8ecc6598c0be4 >> (mmc: mmci: Handle CMD irq before DATA irq). Which I guess shouldn't >> be surprising, as I saw problems with that patch earlie

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-06-13 Thread Ulf Hansson
On 12 June 2014 14:15, Peter Maydell wrote: > On 12 June 2014 13:09, Ulf Hansson wrote: >> A simple fix; for the arm_variant, go back to use the old behaviour. >> >> A quite simple fix; Invent a new primecell-periphid and a new >> corresponding variant and use the old behaviour for this variant.

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-06-12 Thread John Stultz
On Wed, Jun 11, 2014 at 10:35 PM, John Stultz wrote: > Bisecting this points to: e7f3d22289e4307b3071cc18b1d8ecc6598c0be4 > (mmc: mmci: Handle CMD irq before DATA irq). Which I guess shouldn't > be surprising, as I saw problems with that patch earlier in the > 3.15-rc cycle: > https://lkml.org

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-06-12 Thread Peter Maydell
On 12 June 2014 13:09, Ulf Hansson wrote: > A simple fix; for the arm_variant, go back to use the old behaviour. > > A quite simple fix; Invent a new primecell-periphid and a new > corresponding variant and use the old behaviour for this variant. The > new primecell-periphid then needs to be provi

Re: [Regression] 3.15 mmc related ext4 corruption with qemu-system-arm

2014-06-12 Thread Ulf Hansson
On 12 June 2014 07:35, John Stultz wrote: > I've been seeing some ext4 corruption with recent kernels under > qemu-system-arm. > > This issue seems to crop up after shutting down uncleanly (terminating > qemu), shortly after booting about 50% of the time. > > ext4/mmc related dmesg details are: >