Hi, Dashi
The same issue I had occured every other week. Do you have solve it .
I want to know how it is fixed. The patch exist in the mainline.
Thanks
zhongjiang
On 2016/12/23 10:38, Dashi DS1 Cao wrote:
> I'd expected that one or more tasks doing the free were the current task of
> other
Hi, Dashi
The same issue I had occured every other week. Do you have solve it .
I want to know how it is fixed. The patch exist in the mainline.
Thanks
zhongjiang
On 2016/12/23 10:38, Dashi DS1 Cao wrote:
> I'd expected that one or more tasks doing the free were the current task of
> other
It's a CentOS 7.2, so there is point in asking RHT. I'll try to persuade the
customer to have a try with kernel version 4.9, if only I can get it work with
CentOS 7.2.
Dashi Cao
-Original Message-
From: Peter Zijlstra [mailto:pet...@infradead.org]
Sent: Friday, December 23, 2016 10:20
It's a CentOS 7.2, so there is point in asking RHT. I'll try to persuade the
customer to have a try with kernel version 4.9, if only I can get it work with
CentOS 7.2.
Dashi Cao
-Original Message-
From: Peter Zijlstra [mailto:pet...@infradead.org]
Sent: Friday, December 23, 2016 10:20
On Fri, Dec 23, 2016 at 02:02:14AM +, Dashi DS1 Cao wrote:
> The kernel version is "RELEASE: 3.10.0-327.36.3.el7.x86_64". It was the
> latest kernel release of CentOS 7.2 at that time, or maybe still now.
This would be the point where we ask you to run a recent upstream kernel
and try and
On Fri, Dec 23, 2016 at 02:02:14AM +, Dashi DS1 Cao wrote:
> The kernel version is "RELEASE: 3.10.0-327.36.3.el7.x86_64". It was the
> latest kernel release of CentOS 7.2 at that time, or maybe still now.
This would be the point where we ask you to run a recent upstream kernel
and try and
On Fri, 23 Dec 2016, Dashi DS1 Cao wrote:
> The kernel version is "RELEASE: 3.10.0-327.36.3.el7.x86_64". It was the
> latest kernel release of CentOS 7.2 at that time, or maybe still now.
Okay, thanks: so, basically a v3.10 kernel, with lots of added patches,
but also lacking many more recent
On Fri, 23 Dec 2016, Dashi DS1 Cao wrote:
> The kernel version is "RELEASE: 3.10.0-327.36.3.el7.x86_64". It was the
> latest kernel release of CentOS 7.2 at that time, or maybe still now.
Okay, thanks: so, basically a v3.10 kernel, with lots of added patches,
but also lacking many more recent
I'd expected that one or more tasks doing the free were the current task of
other cpu cores, but only one of the four dumps has two swapd task that are
concurrently at execution on different cpu.
This is the task leading to the crash:
PID: 247TASK: 881fcfad8000 CPU: 14 COMMAND:
I'd expected that one or more tasks doing the free were the current task of
other cpu cores, but only one of the four dumps has two swapd task that are
concurrently at execution on different cpu.
This is the task leading to the crash:
PID: 247TASK: 881fcfad8000 CPU: 14 COMMAND:
The kernel version is "RELEASE: 3.10.0-327.36.3.el7.x86_64". It was the latest
kernel release of CentOS 7.2 at that time, or maybe still now.
I've tried to print the value of anon_vma from other three dumps, but the
content is not available in the dump.
"gdb: page excluded: kernel virtual
The kernel version is "RELEASE: 3.10.0-327.36.3.el7.x86_64". It was the latest
kernel release of CentOS 7.2 at that time, or maybe still now.
I've tried to print the value of anon_vma from other three dumps, but the
content is not available in the dump.
"gdb: page excluded: kernel virtual
On Thu, 22 Dec 2016, Peter Zijlstra wrote:
> On Wed, Dec 21, 2016 at 03:43:43PM +0100, Michal Hocko wrote:
> > anon_vma locking is clever^Wsubtle as hell. CC Peter...
> >
> > On Tue 20-12-16 09:32:27, Dashi DS1 Cao wrote:
> > > I've collected four crash dumps with similar backtrace.
> > >
> > >
On Thu, 22 Dec 2016, Peter Zijlstra wrote:
> On Wed, Dec 21, 2016 at 03:43:43PM +0100, Michal Hocko wrote:
> > anon_vma locking is clever^Wsubtle as hell. CC Peter...
> >
> > On Tue 20-12-16 09:32:27, Dashi DS1 Cao wrote:
> > > I've collected four crash dumps with similar backtrace.
> > >
> > >
On Wed, Dec 21, 2016 at 03:43:43PM +0100, Michal Hocko wrote:
> anon_vma locking is clever^Wsubtle as hell. CC Peter...
>
> On Tue 20-12-16 09:32:27, Dashi DS1 Cao wrote:
> > I've collected four crash dumps with similar backtrace.
> >
> > PID: 247TASK: 881fcfad8000 CPU: 14 COMMAND:
On Wed, Dec 21, 2016 at 03:43:43PM +0100, Michal Hocko wrote:
> anon_vma locking is clever^Wsubtle as hell. CC Peter...
>
> On Tue 20-12-16 09:32:27, Dashi DS1 Cao wrote:
> > I've collected four crash dumps with similar backtrace.
> >
> > PID: 247TASK: 881fcfad8000 CPU: 14 COMMAND:
Value of anon_vma:
print *((struct anon_vma *)0x8820833ed940)
$2 = {
root = 0x0,
rwsem = {
count = 0,
wait_lock = {
raw_lock = {
{
head_tail = 0,
tickets = {
head = 0,
tail = 0
}
}
}
},
Value of anon_vma:
print *((struct anon_vma *)0x8820833ed940)
$2 = {
root = 0x0,
rwsem = {
count = 0,
wait_lock = {
raw_lock = {
{
head_tail = 0,
tickets = {
head = 0,
tail = 0
}
}
}
},
On Thu 22-12-16 11:53:26, Dashi DS1 Cao wrote:
> I've used another dump with similar backtrace.
Please also dump the anon_vma of the page as well.
--
Michal Hocko
SUSE Labs
On Thu 22-12-16 11:53:26, Dashi DS1 Cao wrote:
> I've used another dump with similar backtrace.
Please also dump the anon_vma of the page as well.
--
Michal Hocko
SUSE Labs
I've used another dump with similar backtrace.
PID: 246TASK: 881fd27df300 CPU: 0 COMMAND: "kswapd0"
#0 [881fcfb23748] machine_kexec at 81051e9b
#1 [881fcfb237a8] crash_kexec at 810f27e2
#2 [881fcfb23878] oops_end at 8163f448
#3 [881fcfb238a0]
I've used another dump with similar backtrace.
PID: 246TASK: 881fd27df300 CPU: 0 COMMAND: "kswapd0"
#0 [881fcfb23748] machine_kexec at 81051e9b
#1 [881fcfb237a8] crash_kexec at 810f27e2
#2 [881fcfb23878] oops_end at 8163f448
#3 [881fcfb238a0]
anon_vma locking is clever^Wsubtle as hell. CC Peter...
On Tue 20-12-16 09:32:27, Dashi DS1 Cao wrote:
> I've collected four crash dumps with similar backtrace.
>
> PID: 247TASK: 881fcfad8000 CPU: 14 COMMAND: "kswapd1"
> #0 [881fcfad7978] machine_kexec at 81051e9b
> #1
anon_vma locking is clever^Wsubtle as hell. CC Peter...
On Tue 20-12-16 09:32:27, Dashi DS1 Cao wrote:
> I've collected four crash dumps with similar backtrace.
>
> PID: 247TASK: 881fcfad8000 CPU: 14 COMMAND: "kswapd1"
> #0 [881fcfad7978] machine_kexec at 81051e9b
> #1
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