On 15/10/16 02:08, Tejun Heo wrote:
> Hello, Balbir.
>
> On Tue, Oct 11, 2016 at 11:21:09PM +1100, Balbir Singh wrote:
>> FYI: I see the samething on my cpu as well, its just that I get lucky
>> and cpu_online(cpu) returns false.
>
> Are you seeing this on x86 or is your test setup also a power
On 15/10/16 02:07, Tejun Heo wrote:
> Hello, Michael.
>
> On Tue, Oct 11, 2016 at 10:22:13PM +1100, Michael Ellerman wrote:
>> The oops happens because we're in enqueue_task_fair() and p->se->cfs_rq
>> is NULL.
>>
>> The cfs_rq is NULL because we did set_task_rq(p, 2048), where 2048 is
>> NR_CPU
On Fri, Oct 14, 2016 at 11:33:12AM +1100, Michael Ellerman wrote:
Reza Arbab writes:
The flow of the main loop in parse_numa_properties() is overly
complicated. Simplify it to be less confusing and easier to read.
No functional change.
I think you're right, but it's not obvious from the diff.
Hello, Balbir.
On Tue, Oct 11, 2016 at 11:21:09PM +1100, Balbir Singh wrote:
> FYI: I see the samething on my cpu as well, its just that I get lucky
> and cpu_online(cpu) returns false.
Are you seeing this on x86 or is your test setup also a power machine?
Thanks.
--
tejun
Hello, Michael.
On Tue, Oct 11, 2016 at 10:22:13PM +1100, Michael Ellerman wrote:
> The oops happens because we're in enqueue_task_fair() and p->se->cfs_rq
> is NULL.
>
> The cfs_rq is NULL because we did set_task_rq(p, 2048), where 2048 is
> NR_CPUS. That causes us to index past the end of the t
On 14/10/16 17:24, Abdul Haleem wrote:
> Hi,
>
> Kernel Oops, followed by kernel panic seen while running rcutorture test on
> 4.8.0 kernel
> Machine Type : PowerPC Bare Metal
>
> RCU torture test steps:
> 1. modprobe rcutorture
> 2. start CPU offline and online while torture test is running
>
From: Michael Ellerman
> Sent: 14 October 2016 01:46
...
> > +LDFLAGS_vmlinux:= $(LDFLAGS_vmlinux-y) --orphan-handling=error
>
> At least some old(er) toolchains don't support that:
>
> /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld:
> unrecognized option '--
> orpha
On 13/10/16 17:51, Nicholas Piggin wrote:
> Also use EX_NMI save space. This should give cleaner debug data in
> case kernel stacks have become corrupted.
>
> MSR_RI is kept clear for the 0x100 handler, because we can't mask it,
> and can't tolerate a reentrant NMI. Technically the 0x100 is not
On 14/10/16 18:31, Nicholas Piggin wrote:
> This adds a config option that can help exercise the case when
> the kernel is not running at PAGE_OFFSET.
>
> Signed-off-by: Nicholas Piggin
> ---
Reviewed-by: Balbir Singh
This patch prevents resetting the cxl adapter via sysfs in presence of
one or more active cxl_context on it. This protects against an
unrecoverable error caused by PSL owning a dirty cache line even after
reset and host tries to touch the same cache line. In case a force reset
of the card is requir
Hi Mpe,
Michael Ellerman writes:
> This is arguably a change to the ABI, but I assume we're OK with that as
> it's arguably a bug in the existing implementation?
Yes cross checked with Fred and he is ok with this.
>
> If so do we have a Fixes: ? and/or should this go to stable?
Yes and Yes. I wi
Adapt the code to make use of new syscall handling interface
Signed-off-by: Marcin Nowakowski
Cc: Steven Rostedt
Cc: Ingo Molnar
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: linuxppc-dev@lists.ozlabs.org
---
arch/powerpc/include/asm/ftrace.h | 13 +
arc
Now that compat syscalls are properly distinguished from native calls,
we can add metadata for compat syscalls as well.
All the macros used to generate the metadata are the same as for
standard syscalls, but with a compat_ prefix to distinguish them easily.
Signed-off-by: Marcin Nowakowski
Cc: St
On Thu, Oct 13, 2016 at 05:55:11PM +0200, Steffen Maier wrote:
> Hm, still behaves for me like I reported for v2:
> http://marc.info/?l=linux-scsi&m=147637177902937&w=2
Hi Steffen,
Can you please try the following on top of 2/16?
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_
Add --orphan-handling=warn to final link flags. This ensures we can
handle all sections explicitly. This would have caught subtle breakage
such as 7de3b27bac47da9de08409df1d69664acbb72197 at build-time.
Also bring some wayward sections into the fold:
- .text.hot and .text.unlikely are compiler gen
This adds a config option that can help exercise the case when
the kernel is not running at PAGE_OFFSET.
Signed-off-by: Nicholas Piggin
---
Changes since v1:
- Improved style as suggested by Balbir and Michael
arch/powerpc/Kconfig | 9 +
arch/powerpc/kernel/head_64.S | 8 ++
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