On Wed, Jan 02, 2019 at 01:51:01PM +0100, Vlastimil Babka wrote:
> > syz-executor0/8529 is trying to acquire lock:
> > 5e7fb829 (&pgdat->kswapd_wait){}, at:
> > __wake_up_common_lock+0x19e/0x330 kernel/sched/wait.c:120
>
> From the backtrace at the end of report I see it's coming fr
On Mon, Jan 07, 2019 at 10:29:21PM +0100, Peter Zijlstra wrote:
> On Mon, Jan 07, 2019 at 03:46:27PM -0500, Johannes Weiner wrote:
> > Hm, so the splat says this:
> >
> > wakeups take the pi lock
> > pi lock holders take the rq lock
> > rq lock holders take the timer base lock (thanks psi)
> > tim
On Mon, Jan 07, 2019 at 03:46:27PM -0500, Johannes Weiner wrote:
> Hm, so the splat says this:
>
> wakeups take the pi lock
> pi lock holders take the rq lock
> rq lock holders take the timer base lock (thanks psi)
> timer base lock holders take the zone lock (thanks kasan)
> problem: now a zone l
On Mon, Jan 07, 2019 at 10:52:17AM +0100, Peter Zijlstra wrote:
> On Wed, Jan 02, 2019 at 01:51:01PM +0100, Vlastimil Babka wrote:
> > > -> #3 (&base->lock){-.-.}:
> > > __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110
> > > [inline]
> > > _raw_spin_lock_irqsave+0x99/0x
On Wed, Jan 02, 2019 at 01:51:01PM +0100, Vlastimil Babka wrote:
> > -> #3 (&base->lock){-.-.}:
> > __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110
> > [inline]
> > _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152
> > lock_timer_base+0xbb/0x2b0 ke
On Thu, Jan 03, 2019 at 02:40:35PM -0500, Qian Cai wrote:
> > Signed-off-by: Mel Gorman
>
> Tested-by: Qian Cai
Thanks!
--
Mel Gorman
SUSE Labs
On 1/3/19 11:37 AM, Mel Gorman wrote:
> On Wed, Jan 02, 2019 at 07:29:43PM +0100, Dmitry Vyukov wrote:
This wakeup_kswapd is new due to Mel's 1c30844d2dfe ("mm: reclaim small
amounts of memory when an external fragmentation event occurs") so CC Mel.
>>>
>>> New year new bugs :(
>>
>>
On Wed, Jan 02, 2019 at 07:29:43PM +0100, Dmitry Vyukov wrote:
> > > This wakeup_kswapd is new due to Mel's 1c30844d2dfe ("mm: reclaim small
> > > amounts of memory when an external fragmentation event occurs") so CC Mel.
> > >
> >
> > New year new bugs :(
>
> Old too :(
> https://syzkaller.appspo
On 1/2/19 8:28 PM, Tetsuo Handa wrote:
> On 2019/01/03 3:19, Qian Cai wrote:
>> On 1/2/19 1:06 PM, Mel Gorman wrote:
>>
>>> While I recognise there is no test case available, how often does this
>>> trigger in syzbot as it would be nice to have some confirmation any
>>> patch is really fixing the p
On 2019/01/03 3:19, Qian Cai wrote:
> On 1/2/19 1:06 PM, Mel Gorman wrote:
>
>> While I recognise there is no test case available, how often does this
>> trigger in syzbot as it would be nice to have some confirmation any
>> patch is really fixing the problem.
>
> I think I did manage to trigger
On Wed, Jan 2, 2019 at 7:06 PM Mel Gorman wrote:
>
> On Wed, Jan 02, 2019 at 01:51:01PM +0100, Vlastimil Babka wrote:
> > On 1/2/19 9:51 AM, syzbot wrote:
> > > Hello,
> > >
> > > syzbot found the following crash on:
> > >
> > > HEAD commit:f346b0becb1b Merge branch 'akpm' (patches from Andrew
On 1/2/19 1:06 PM, Mel Gorman wrote:
> While I recognise there is no test case available, how often does this
> trigger in syzbot as it would be nice to have some confirmation any
> patch is really fixing the problem.
I think I did manage to trigger this every time running a mmap() workload
causi
On Wed, Jan 02, 2019 at 01:51:01PM +0100, Vlastimil Babka wrote:
> On 1/2/19 9:51 AM, syzbot wrote:
> > Hello,
> >
> > syzbot found the following crash on:
> >
> > HEAD commit:f346b0becb1b Merge branch 'akpm' (patches from Andrew)
> > git tree: upstream
> > console output: https://syzka
On 1/2/19 9:51 AM, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:f346b0becb1b Merge branch 'akpm' (patches from Andrew)
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1510cefd40
> kernel config: https://syzkaller.a
Hello,
syzbot found the following crash on:
HEAD commit:f346b0becb1b Merge branch 'akpm' (patches from Andrew)
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1510cefd40
kernel config: https://syzkaller.appspot.com/x/.config?x=c255c77ba370fe7c
dashboar
15 matches
Mail list logo