On Mon, 27 Feb 2017, Bart Van Assche wrote:
> On Mon, 2017-02-27 at 21:17 +0100, Sebastian Ott wrote:
> > commit 99db94940 "IB/core: Remove ib_device.dma_device"
> > breaks infiniband on s390 (and I think also other archs that do something
> > like to_pci_d
On Tue, 28 Feb 2017, Sebastian Ott wrote:
> On Mon, 27 Feb 2017, Bart Van Assche wrote:
> > On Mon, 2017-02-27 at 21:17 +0100, Sebastian Ott wrote:
> > > commit 99db94940 "IB/core: Remove ib_device.dma_device"
> > > breaks infiniband on s390 (and I thi
On Thu, 18 Feb 2016, Kirill A. Shutemov wrote:
> I worth minimizing kernel config on which you can see the bug. Things like
> CONFIG_DEBUG_PAGEALLOC used to interfere with THP before.
I disabled all debugging options (using
arch/s390/configs/performance_defconfig) - we still chrashed.
Sebastian
On Fri, 12 Feb 2016, Will Deacon wrote:
> On Thu, Feb 11, 2016 at 08:57:02PM +0100, Gerald Schaefer wrote:
> > On Thu, 11 Feb 2016 21:09:42 +0200
> > "Kirill A. Shutemov" wrote:
> > > On Thu, Feb 11, 2016 at 07:22:23PM +0100, Gerald Schaefer wrote:
> >
On Thu, 11 Feb 2016, Kirill A. Shutemov wrote:
> On Thu, Feb 11, 2016 at 09:09:42PM +0200, Kirill A. Shutemov wrote:
> > On Thu, Feb 11, 2016 at 07:22:23PM +0100, Gerald Schaefer wrote:
> > > Hi,
> > >
> > > Sebastian Ott reported random kernel crashes begin
On Sat, 13 Feb 2016, Kirill A. Shutemov wrote:
> Could you check if revert of fecffad25458 helps?
I reverted fecffad25458 on top of 721675fcf277cf - it oopsed with:
¢ 1851.721062! Unable to handle kernel pointer dereference in virtual kernel
address space
¢ 1851.721075! failing address: 000
Fix this compile error:
drivers/built-in.o: In function `arc_ps2_probe':
/mnt/linux/drivers/input/serio/arc_ps2.c:206: undefined reference to
`devm_ioremap_resource'
Signed-off-by: Sebastian Ott
---
drivers/input/serio/Kconfig |1 +
1 file changed, 1 insertion(+)
--- a/dri
nce to
'devm_ioremap_resource'
Signed-off-by: Sebastian Ott
---
drivers/phy/Kconfig |2 ++
1 file changed, 2 insertions(+)
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -56,6 +56,7 @@ config PHY_EXYNOS_MIPI_VIDEO
config PHY_PXA_28NM_HSIC
tristate "Marvell
On Wed, 12 Aug 2015, Christoph Hellwig wrote:
> Use sg_phys() instead of page_to_phys(sg_page(sg)) so that we don't
> require a page structure for all DMA memory.
>
> Signed-off-by: Christoph Hellwig
Acked-by: Sebastian Ott
> ---
> arch/s390/pci/pci_dma.c | 20 ++
On Thu, 9 Jul 2015, Jiang Liu wrote:
> Use accessor for_pci_msi_entry() to access MSI device list, so we could
> easily move msi_list from struct pci_dev into struct device later.
>
> Signed-off-by: Jiang Liu
Acked-by: Sebastian Ott
Regards,
Sebastian
> ---
> arch/s39
Hi,
this warning turned up on s390:
[7.041512] [ cut here ]
[7.041518] DMA-API: nvme :00:00.0: mapping sg segment longer than
device claims to support [len=106496] [max=65536]
[7.041531] WARNING: CPU: 1 PID: 229 at kernel/dma/debug.c:1233
debug_dma_map_sg
r pci).
>
> Note that unlike pci we still require a driver override to
> match the subchannel type; matching more than one subchannel
> type is probably not useful anyway.
>
> Signed-off-by: Cornelia Huck
Reviewed-by: Sebastian Ott
Should I take that via our git tree or do you have other patches depending
on this one?
On Mon, 3 Jun 2019, Suzuki K Poulose wrote:
> The cio driver use driver_find_device() to find all devices
> to release them before the driver is unregistered. Instead,
> it could easily use a lighter driver_for_each_device() helper
> to iterate over all the devices.
>
> Cc: S
that function
from module code.
As an unrelated question, just to be sure: ap_bus.c is compiled as
built-in even with ZCRYPT=m, right?
Reviewed-by: Sebastian Ott
Regards,
Sebastian
On Fri, 28 Apr 2017, Joerg Roedel wrote:
> On Fri, Apr 28, 2017 at 02:46:34PM +0200, Gerald Schaefer wrote:
> > On Thu, 27 Apr 2017 23:03:25 +0200
> > Joerg Roedel wrote:
> >
> > > > Well, there is a separate zpci_dev for each pci_dev on s390,
> > > > and each of those has its own separate dma-ta
7; was not declared. Should it be static?
Signed-off-by: Sebastian Ott
---
arch/x86/include/asm/kvm_host.h | 3 ---
include/linux/kvm_host.h| 3 +++
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index dd
Move the kvm_arch_irq_routing_update() prototype outside of
ifdef CONFIG_HAVE_KVM_EVENTFD guards to fix the following sparse warning:
arch/s390/kvm/../../../virt/kvm/irqchip.c:171:28: warning: symbol
'kvm_arch_irq_routing_update' was not declared. Should it be static?
Signed-off-by:
Hi,
One of my test systems (s390) hangs after boot. One of the cpus is idle
the other is in arch_spin_relax. Bisect pointed to this one:
a8a217c22116eff6c120d753c9934089fb229af0 is the first bad commit
commit a8a217c22116eff6c120d753c9934089fb229af0
Author: Will Deacon
Date: Tue Oct 3 19:25:27
Hello Will,
On Wed, 22 Nov 2017, Will Deacon wrote:
> Now, I can't see what the break_lock is doing here other than causing
> problems. Is there a good reason for it, or can you just try removing it
> altogether? Patch below.
With your patch applied the system is able to boot again.
I did some qu
On Wed, 9 Aug 2017, Joerg Roedel wrote:
> From: Joerg Roedel
>
> Add support for the iommu_device_register interface to make
> the s390 hardware iommus visible to the iommu core and in
> sysfs.
>
With this patch pci hot-unplug fails with a use after free or refcounting
issue - I'm currently try
Hello Joerg,
On Fri, 11 Aug 2017, Joerg Roedel wrote:
> Hey Sebastian,
>
> On Thu, Aug 10, 2017 at 09:07:06PM +0200, Sebastian Ott wrote:
> > With this patch pci hot-unplug fails with a use after free or refcounting
> > issue - I'm currently trying to understand what
On Fri, 11 Aug 2017, Sebastian Ott wrote:
> * iommu_release_device must not release the struct device but the
> structure it is embedded in: struct iommu_device (I'll send a patch
> for that)
--->8
>From 2839c92e038af47b8cb569f84d571878c54d1815 Mon Sep 17 00:00:00 2001
From:
On Fri, 11 Aug 2017, Sebastian Ott wrote:
> * That patch embedded a struct iommu_device within struct zpci_dev but
> the iommu_device has a release function (via its class) - so when
> the release function gets called it frees memory that was never allocated.
> The fix is to not e
Hi,
A system running v4.12-rc3-11-gf511c0b on s390 hangs after boot with no
messages on the console. The message buffer obtained via a system dump
looked like this:
[...]
[ 17.870712] virbr0: port 1(virbr0-nic) entered disabled state
[ 19.618523] Unable to handle kernel pointer dereference in
On Thu, 1 Jun 2017, Xin Long wrote:
> On Thu, Jun 1, 2017 at 12:32 AM, Sebastian Ott
> wrote:
> > [...]
> I couldn't see any bridge-related thing here, and it couldn't be reproduced
> with virbr0 (stp=1) on my box (on both s390x and x86_64), I guess there
> i
Hi,
On Tue, 13 Jun 2017, Christoph Hellwig wrote:
> Btw, scm_blk.c blk-mq conversion seems odd if not broken. It should
> always call blk_mq_complete_request from scm_request_finish and
> then pass the error to blk_mq_end_request frin
> there.
OK. I had added that because rq->errors went away. W
On Wed, 4 Oct 2017, Kees Cook wrote:
> In preparation for unconditionally passing the struct timer_list pointer to
> all timer callbacks, switch to using the new timer_setup() and from_timer()
> to pass the timer pointer explicitly.
> -void qdio_outbound_timer(unsigned long data)
> +void qdio_outb
On Thu, 5 Oct 2017, Kees Cook wrote:
> On Thu, Oct 5, 2017 at 2:13 AM, Sebastian Ott
> wrote:
> > On Wed, 4 Oct 2017, Kees Cook wrote:
> >> In preparation for unconditionally passing the struct timer_list pointer to
> >> all timer callbacks, switch to using the ne
Hello Sergey,
On Tue, 21 Mar 2017, Sergey Senozhatsky wrote:
> // I kept only lockdep splats from the original report and cut off .configs
> // full version:
> // lkml.kernel.org/r/alpine.LFD.2.20.1703201736070.1753@schleppi
>
> On (03/20/17 17:43), Sebastian Ott wrote:
&
On Mon, 14 Aug 2017, Joerg Roedel wrote:
> I attach the patch I wrote to fix this, can you please test it together
> with the initial patch in this thread?
I did and can confirm that everything worked as expected!
Thanks,
Sebastian
On Tue, 15 Aug 2017, Joerg Roedel wrote:
> On Tue, Aug 15, 2017 at 06:02:20PM +0200, Sebastian Ott wrote:
> > On Mon, 14 Aug 2017, Joerg Roedel wrote:
> > > I attach the patch I wrote to fix this, can you please test it together
> > > with the initial patch in this thr
On Tue, 13 Jun 2017, Stephen Rothwell wrote:
> After merging the block tree, today's linux-next build (s390x
> s390-defconfig) failed like this:
>
> drivers/s390/block/scm_blk.c:293:10: error: 'BLK_MQ_RQ_QUEUE_BUSY' undeclared
> (first use in this function)
> drivers/s390/block/scm_blk.c:327:9: e
ned-off-by: Sebastian Ott
---
kernel/irq/internals.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 9da14d1..dbfba99 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -437,7 +437,9 @@ static i
On Thu, 15 Jun 2017, Sebastian Ott wrote:
> On Tue, 13 Jun 2017, Stephen Rothwell wrote:
> > After merging the block tree, today's linux-next build (s390x
> > s390-defconfig) failed like this:
> >
> > drivers/s390/block/scm_blk.c:293:10: error: 'BLK_MQ_RQ_QUEU
On Mon, 27 Nov 2017, Will Deacon wrote:
> Sebastian: could you try the diff below, please? If that fixes s390, then
> we can debate the merits of GENERIC_LOCKBREAK independently of fixing this
> issue.
>
> Thanks,
>
> Will
>
> --->8
>
> diff --git a/kernel/locking/spinlock.c b/kernel/locking/sp
guaranteed.
Simply switch to dma_zalloc_coherent.
Signed-off-by: Sebastian Ott
---
drivers/misc/genwqe/card_ddcb.c | 2 --
drivers/misc/genwqe/card_utils.c | 4 ++--
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c
index
unsigned long pa = 0;
> > int ret;
> >
> > size = PAGE_ALIGN(size);
>
> The compiler is right. pa is set in the for-loop. If "dma_addr <
> dma_addr_base + size"
> is never true and __dma_purge_tlb() returns with an error, pa *is*
> uninitialized.
> The fix seems sensible to me.
Although that could only happen if map_sg is called with zero length sg
list entries I'm in favor getting rid of that warning.
Acked-by: Sebastian Ott
Regards,
Sebastian
Hi,
After a userspace update (fedora 23->24) I reproducibly run into the
following oops during shutdown (on s390):
[ 71.054832] Unable to handle kernel pointer dereference in virtual kernel
address space
[ 71.054835] Failing address: 6b6b6b6b6b6b6000 TEID: 6b6b6b6b6b6b6803
[ 71.054838] Fau
Commit-ID: e5682b4eecb2b73282853d0ef314d3164b986997
Gitweb: http://git.kernel.org/tip/e5682b4eecb2b73282853d0ef314d3164b986997
Author: Sebastian Ott
AuthorDate: Tue, 4 Jul 2017 11:25:15 +0200
Committer: Thomas Gleixner
CommitDate: Tue, 4 Jul 2017 12:36:43 +0200
genirq/debugfs: Fix
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