Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-03 Thread Anton Blanchard
Hi, > Yes. With that patch applied, things work for me again. Thanks Alex, Nish. We can reproduce this on one of our Biminis, looking into it now. Anton -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-03 Thread Anton Blanchard
Hi, Yes. With that patch applied, things work for me again. Thanks Alex, Nish. We can reproduce this on one of our Biminis, looking into it now. Anton -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Benjamin Herrenschmidt
On Tue, 2012-10-02 at 14:43 -0700, Nishanth Aravamudan wrote: > > Started looking into this. If your suspicion were accurate, wouldn't > the > bisection have stopped at 0e4bc95d87394364f408627067238453830bdbf3 > ("powerpc/iommu: Reduce spinlock coverage in iommu_alloc and > iommu_free")? > >

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Alexander Graf
On 03.10.2012, at 00:17, Nishanth Aravamudan wrote: > On 02.10.2012 [23:47:39 +0200], Alexander Graf wrote: >> >> On 02.10.2012, at 23:43, Nishanth Aravamudan wrote: >> >>> Hi Ben, >>> >>> On 02.10.2012 [10:58:29 +1000], Benjamin Herrenschmidt wrote: On Mon, 2012-10-01 at 16:03 +0200,

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Nishanth Aravamudan
On 02.10.2012 [23:47:39 +0200], Alexander Graf wrote: > > On 02.10.2012, at 23:43, Nishanth Aravamudan wrote: > > > Hi Ben, > > > > On 02.10.2012 [10:58:29 +1000], Benjamin Herrenschmidt wrote: > >> On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote: > >>> Phew. Here we go :). It looks to

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Alexander Graf
On 02.10.2012, at 23:43, Nishanth Aravamudan wrote: > Hi Ben, > > On 02.10.2012 [10:58:29 +1000], Benjamin Herrenschmidt wrote: >> On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote: >>> Phew. Here we go :). It looks to be more of a PPC specific problem >>> than it appeared as at first: >>

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Nishanth Aravamudan
Hi Ben, On 02.10.2012 [10:58:29 +1000], Benjamin Herrenschmidt wrote: > On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote: > > Phew. Here we go :). It looks to be more of a PPC specific problem > > than it appeared as at first: > > Ok, so I suspect the problem is the pushing down of the

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Nishanth Aravamudan
Hi Ben, On 02.10.2012 [10:58:29 +1000], Benjamin Herrenschmidt wrote: On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote: Phew. Here we go :). It looks to be more of a PPC specific problem than it appeared as at first: Ok, so I suspect the problem is the pushing down of the locks

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Alexander Graf
On 02.10.2012, at 23:43, Nishanth Aravamudan wrote: Hi Ben, On 02.10.2012 [10:58:29 +1000], Benjamin Herrenschmidt wrote: On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote: Phew. Here we go :). It looks to be more of a PPC specific problem than it appeared as at first: Ok, so I

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Nishanth Aravamudan
On 02.10.2012 [23:47:39 +0200], Alexander Graf wrote: On 02.10.2012, at 23:43, Nishanth Aravamudan wrote: Hi Ben, On 02.10.2012 [10:58:29 +1000], Benjamin Herrenschmidt wrote: On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote: Phew. Here we go :). It looks to be more of a PPC

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Alexander Graf
On 03.10.2012, at 00:17, Nishanth Aravamudan wrote: On 02.10.2012 [23:47:39 +0200], Alexander Graf wrote: On 02.10.2012, at 23:43, Nishanth Aravamudan wrote: Hi Ben, On 02.10.2012 [10:58:29 +1000], Benjamin Herrenschmidt wrote: On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote:

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-02 Thread Benjamin Herrenschmidt
On Tue, 2012-10-02 at 14:43 -0700, Nishanth Aravamudan wrote: Started looking into this. If your suspicion were accurate, wouldn't the bisection have stopped at 0e4bc95d87394364f408627067238453830bdbf3 (powerpc/iommu: Reduce spinlock coverage in iommu_alloc and iommu_free)? Alex, the

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-01 Thread Benjamin Herrenschmidt
On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote: > Phew. Here we go :). It looks to be more of a PPC specific problem than it > appeared as at first: Ok, so I suspect the problem is the pushing down of the locks which breaks with iommu backends that have a separate flush callback. In

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-01 Thread J. Bruce Fields
On Mon, Oct 01, 2012 at 04:03:06PM +0200, Alexander Graf wrote: > > On 28.09.2012, at 17:10, J. Bruce Fields wrote: > > > On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: > >> > >> On 28.09.2012, at 04:04, Linus Torvalds wrote: > >> > >>> On Thu, Sep 27, 2012 at 6:55 PM,

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-01 Thread Alexander Graf
On 28.09.2012, at 17:10, J. Bruce Fields wrote: > On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: >> >> On 28.09.2012, at 04:04, Linus Torvalds wrote: >> >>> On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf wrote: Below are OOPS excerpts from different rc's I tried.

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-01 Thread Alexander Graf
On 28.09.2012, at 17:10, J. Bruce Fields wrote: On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: On 28.09.2012, at 04:04, Linus Torvalds wrote: On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf ag...@suse.de wrote: Below are OOPS excerpts from different rc's I tried. All

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-01 Thread J. Bruce Fields
On Mon, Oct 01, 2012 at 04:03:06PM +0200, Alexander Graf wrote: On 28.09.2012, at 17:10, J. Bruce Fields wrote: On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: On 28.09.2012, at 04:04, Linus Torvalds wrote: On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-10-01 Thread Benjamin Herrenschmidt
On Mon, 2012-10-01 at 16:03 +0200, Alexander Graf wrote: Phew. Here we go :). It looks to be more of a PPC specific problem than it appeared as at first: Ok, so I suspect the problem is the pushing down of the locks which breaks with iommu backends that have a separate flush callback. In that

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-28 Thread Alexander Graf
On 28.09.2012, at 17:10, J. Bruce Fields wrote: > On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: >> >> On 28.09.2012, at 04:04, Linus Torvalds wrote: >> >>> On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf wrote: Below are OOPS excerpts from different rc's I tried.

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-28 Thread J. Bruce Fields
On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: > > On 28.09.2012, at 04:04, Linus Torvalds wrote: > > > On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf wrote: > >> > >> Below are OOPS excerpts from different rc's I tried. All of them crashed - > >> all the way up to current

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-28 Thread J. Bruce Fields
On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: On 28.09.2012, at 04:04, Linus Torvalds wrote: On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf ag...@suse.de wrote: Below are OOPS excerpts from different rc's I tried. All of them crashed - all the way up to current

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-28 Thread Alexander Graf
On 28.09.2012, at 17:10, J. Bruce Fields wrote: On Fri, Sep 28, 2012 at 04:19:55AM +0200, Alexander Graf wrote: On 28.09.2012, at 04:04, Linus Torvalds wrote: On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf ag...@suse.de wrote: Below are OOPS excerpts from different rc's I tried. All

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-27 Thread Alexander Graf
On 28.09.2012, at 04:04, Linus Torvalds wrote: > On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf wrote: >> >> Below are OOPS excerpts from different rc's I tried. All of them crashed - >> all the way up to current Linus' master branch. I haven't cross-checked, but >> I don't remember any

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-27 Thread Linus Torvalds
On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf wrote: > > Below are OOPS excerpts from different rc's I tried. All of them crashed - > all the way up to current Linus' master branch. I haven't cross-checked, but > I don't remember any such behavior from pre-3.6 releases. Since you seem to be

[REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-27 Thread Alexander Graf
Howdy, While running 3.6.0-rcX I am having a few issues with nfsd on my PPC970 based system. For some reason every time I actually end up accessing an NFS share on it, it crashes away at random points. It looks a lot like corrupted pointers in all logs. I also can't reproduce the oopses

[REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-27 Thread Alexander Graf
Howdy, While running 3.6.0-rcX I am having a few issues with nfsd on my PPC970 based system. For some reason every time I actually end up accessing an NFS share on it, it crashes away at random points. It looks a lot like corrupted pointers in all logs. I also can't reproduce the oopses

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-27 Thread Linus Torvalds
On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf ag...@suse.de wrote: Below are OOPS excerpts from different rc's I tried. All of them crashed - all the way up to current Linus' master branch. I haven't cross-checked, but I don't remember any such behavior from pre-3.6 releases. Since you

Re: [REGRESSION] nfsd crashing with 3.6.0-rc7 on PowerPC

2012-09-27 Thread Alexander Graf
On 28.09.2012, at 04:04, Linus Torvalds wrote: On Thu, Sep 27, 2012 at 6:55 PM, Alexander Graf ag...@suse.de wrote: Below are OOPS excerpts from different rc's I tried. All of them crashed - all the way up to current Linus' master branch. I haven't cross-checked, but I don't remember any