RE: kernel panics with 4.14.X versions

> From: Jan Kara > Sent: Friday, April 20, 2018 03:22 > On Thu 19-04-18 21:37:25, Dexuan Cui wrote: > > > From: Jan Kara > > > Sent: Thursday, April 19, 2018 13:23 > > > Good news guys, Robert has just spotted a bug which looks like what I'd > > > expect can cause your lockups /

RE: kernel panics with 4.14.X versions

> From: Jan Kara > Sent: Friday, April 20, 2018 03:22 > On Thu 19-04-18 21:37:25, Dexuan Cui wrote: > > > From: Jan Kara > > > Sent: Thursday, April 19, 2018 13:23 > > > Good news guys, Robert has just spotted a bug which looks like what I'd > > > expect can cause your lockups / crashes. I've

Re: kernel panics with 4.14.X versions

On Thu 19-04-18 21:37:25, Dexuan Cui wrote: > > From: Jan Kara > > Sent: Thursday, April 19, 2018 13:23 > > Good news guys, Robert has just spotted a bug which looks like what I'd > > expect can cause your lockups / crashes. I've merged his patch to my tree > > and will push it to Linus for -rc3

Re: kernel panics with 4.14.X versions

On Thu 19-04-18 21:37:25, Dexuan Cui wrote: > > From: Jan Kara > > Sent: Thursday, April 19, 2018 13:23 > > Good news guys, Robert has just spotted a bug which looks like what I'd > > expect can cause your lockups / crashes. I've merged his patch to my tree > > and will push it to Linus for -rc3

RE: kernel panics with 4.14.X versions

> From: Jan Kara > Sent: Thursday, April 19, 2018 13:23 > Good news guys, Robert has just spotted a bug which looks like what I'd > expect can cause your lockups / crashes. I've merged his patch to my tree > and will push it to Linus for -rc3 so eventually it should land in > appropriate stable

RE: kernel panics with 4.14.X versions

> From: Jan Kara > Sent: Thursday, April 19, 2018 13:23 > Good news guys, Robert has just spotted a bug which looks like what I'd > expect can cause your lockups / crashes. I've merged his patch to my tree > and will push it to Linus for -rc3 so eventually it should land in > appropriate stable

Re: kernel panics with 4.14.X versions

On Thu, Apr 19, 2018 at 2:16 PM, Pavlos Parissis wrote: > On 19/04/2018 10:23 μμ, Jan Kara wrote: >> On Wed 18-04-18 10:32:21, Pavlos Parissis wrote: >>> On 17/04/2018 02:12 μμ, Jan Kara wrote: On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: > On 16/04/2018

Re: kernel panics with 4.14.X versions

On Thu, Apr 19, 2018 at 2:16 PM, Pavlos Parissis wrote: > On 19/04/2018 10:23 μμ, Jan Kara wrote: >> On Wed 18-04-18 10:32:21, Pavlos Parissis wrote: >>> On 17/04/2018 02:12 μμ, Jan Kara wrote: On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: > On 16/04/2018 04:40 μμ, Jan Kara wrote:

Re: kernel panics with 4.14.X versions

On 19/04/2018 10:23 μμ, Jan Kara wrote: > On Wed 18-04-18 10:32:21, Pavlos Parissis wrote: >> On 17/04/2018 02:12 μμ, Jan Kara wrote: >>> On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: On 16/04/2018 04:40 μμ, Jan Kara wrote: >>> >>> >>> > How easily can you hit this? Very

Re: kernel panics with 4.14.X versions

On 19/04/2018 10:23 μμ, Jan Kara wrote: > On Wed 18-04-18 10:32:21, Pavlos Parissis wrote: >> On 17/04/2018 02:12 μμ, Jan Kara wrote: >>> On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: On 16/04/2018 04:40 μμ, Jan Kara wrote: >>> >>> >>> > How easily can you hit this? Very

Re: kernel panics with 4.14.X versions

On Wed 18-04-18 10:32:21, Pavlos Parissis wrote: > On 17/04/2018 02:12 μμ, Jan Kara wrote: > > On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: > >> On 16/04/2018 04:40 μμ, Jan Kara wrote: > > > > > > > >>> How easily can you hit this? > >> > >> Very easily, I only need to wait 1-2 days for a

Re: kernel panics with 4.14.X versions

On Wed 18-04-18 10:32:21, Pavlos Parissis wrote: > On 17/04/2018 02:12 μμ, Jan Kara wrote: > > On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: > >> On 16/04/2018 04:40 μμ, Jan Kara wrote: > > > > > > > >>> How easily can you hit this? > >> > >> Very easily, I only need to wait 1-2 days for a

Re: kernel panics with 4.14.X versions

On 17/04/2018 02:12 μμ, Jan Kara wrote: > On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: >> On 16/04/2018 04:40 μμ, Jan Kara wrote: > > > >>> How easily can you hit this? >> >> Very easily, I only need to wait 1-2 days for a crash to occur. > > I wouldn't call that very easily but opinions

Re: kernel panics with 4.14.X versions

On 17/04/2018 02:12 μμ, Jan Kara wrote: > On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: >> On 16/04/2018 04:40 μμ, Jan Kara wrote: > > > >>> How easily can you hit this? >> >> Very easily, I only need to wait 1-2 days for a crash to occur. > > I wouldn't call that very easily but opinions

RE: kernel panics with 4.14.X versions

> From: Greg KH > Sent: Tuesday, April 17, 2018 03:34 > On Mon, Apr 16, 2018 at 09:10:35PM +, Dexuan Cui wrote: > > > From: Jan Kara > > > Sent: Monday, April 16, 2018 07:41 > > > ... > > > How easily can you hit this? Are you able to run debug kernels / inspect

RE: kernel panics with 4.14.X versions

> From: Greg KH > Sent: Tuesday, April 17, 2018 03:34 > On Mon, Apr 16, 2018 at 09:10:35PM +, Dexuan Cui wrote: > > > From: Jan Kara > > > Sent: Monday, April 16, 2018 07:41 > > > ... > > > How easily can you hit this? Are you able to run debug kernels / inspect > > > crash dumps when the

Re: kernel panics with 4.14.X versions

On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: > On 16/04/2018 04:40 μμ, Jan Kara wrote: > > How easily can you hit this? > > Very easily, I only need to wait 1-2 days for a crash to occur. I wouldn't call that very easily but opinions may differ :). Anyway it's good (at least for

Re: kernel panics with 4.14.X versions

On Tue 17-04-18 01:31:24, Pavlos Parissis wrote: > On 16/04/2018 04:40 μμ, Jan Kara wrote: > > How easily can you hit this? > > Very easily, I only need to wait 1-2 days for a crash to occur. I wouldn't call that very easily but opinions may differ :). Anyway it's good (at least for

Re: kernel panics with 4.14.X versions

On Tue 17-04-18 13:18:46, Pavlos Parissis wrote: > On 17/04/2018 01:31 πμ, Pavlos Parissis wrote: > > On 16/04/2018 04:40 μμ, Jan Kara wrote: > >> On Mon 16-04-18 15:25:50, Guillaume Morin wrote: > >>> Fwiw, there have been already reports of similar soft lockups in > >>> fsnotify() on 4.14:

Re: kernel panics with 4.14.X versions

On Tue 17-04-18 13:18:46, Pavlos Parissis wrote: > On 17/04/2018 01:31 πμ, Pavlos Parissis wrote: > > On 16/04/2018 04:40 μμ, Jan Kara wrote: > >> On Mon 16-04-18 15:25:50, Guillaume Morin wrote: > >>> Fwiw, there have been already reports of similar soft lockups in > >>> fsnotify() on 4.14:

Re: kernel panics with 4.14.X versions

On Tue 17-04-18 14:48:35, Amir Goldstein wrote: > On Tue, Apr 17, 2018 at 1:33 PM, Greg KH wrote: > > On Mon, Apr 16, 2018 at 09:10:35PM +, Dexuan Cui wrote: > >> > From: Jan Kara > >> > Sent: Monday, April 16, 2018 07:41 > >> > ... > >> > How easily can you hit

Re: kernel panics with 4.14.X versions

On Tue 17-04-18 14:48:35, Amir Goldstein wrote: > On Tue, Apr 17, 2018 at 1:33 PM, Greg KH wrote: > > On Mon, Apr 16, 2018 at 09:10:35PM +, Dexuan Cui wrote: > >> > From: Jan Kara > >> > Sent: Monday, April 16, 2018 07:41 > >> > ... > >> > How easily can you hit this? Are you able to run

Re: kernel panics with 4.14.X versions

On Tue, Apr 17, 2018 at 1:33 PM, Greg KH wrote: > On Mon, Apr 16, 2018 at 09:10:35PM +, Dexuan Cui wrote: >> > From: Jan Kara >> > Sent: Monday, April 16, 2018 07:41 >> > ... >> > How easily can you hit this? Are you able to run debug kernels / inspect >> >

Re: kernel panics with 4.14.X versions

On Tue, Apr 17, 2018 at 1:33 PM, Greg KH wrote: > On Mon, Apr 16, 2018 at 09:10:35PM +, Dexuan Cui wrote: >> > From: Jan Kara >> > Sent: Monday, April 16, 2018 07:41 >> > ... >> > How easily can you hit this? Are you able to run debug kernels / inspect >> > crash dumps when the issue occurs?

Re: kernel panics with 4.14.X versions

On 17/04/2018 01:31 πμ, Pavlos Parissis wrote: > On 16/04/2018 04:40 μμ, Jan Kara wrote: >> On Mon 16-04-18 15:25:50, Guillaume Morin wrote: >>> Fwiw, there have been already reports of similar soft lockups in >>> fsnotify() on 4.14: https://lkml.org/lkml/2018/3/2/1038 >>> >>> We have also noticed

Re: kernel panics with 4.14.X versions

On 17/04/2018 01:31 πμ, Pavlos Parissis wrote: > On 16/04/2018 04:40 μμ, Jan Kara wrote: >> On Mon 16-04-18 15:25:50, Guillaume Morin wrote: >>> Fwiw, there have been already reports of similar soft lockups in >>> fsnotify() on 4.14: https://lkml.org/lkml/2018/3/2/1038 >>> >>> We have also noticed

Re: kernel panics with 4.14.X versions

On Mon, Apr 16, 2018 at 09:10:35PM +, Dexuan Cui wrote: > > From: Jan Kara > > Sent: Monday, April 16, 2018 07:41 > > ... > > How easily can you hit this? Are you able to run debug kernels / inspect > > crash dumps when the issue occurs? Also testing with the latest mainline > >

Re: kernel panics with 4.14.X versions

On Mon, Apr 16, 2018 at 09:10:35PM +, Dexuan Cui wrote: > > From: Jan Kara > > Sent: Monday, April 16, 2018 07:41 > > ... > > How easily can you hit this? Are you able to run debug kernels / inspect > > crash dumps when the issue occurs? Also testing with the latest mainline > > kernel (4.16)

Re: kernel panics with 4.14.X versions

On 16/04/2018 04:40 μμ, Jan Kara wrote: > On Mon 16-04-18 15:25:50, Guillaume Morin wrote: >> Fwiw, there have been already reports of similar soft lockups in >> fsnotify() on 4.14: https://lkml.org/lkml/2018/3/2/1038 >> >> We have also noticed similar softlockups with 4.14.22 here. > > Yeah. >

Re: kernel panics with 4.14.X versions

On 16/04/2018 04:40 μμ, Jan Kara wrote: > On Mon 16-04-18 15:25:50, Guillaume Morin wrote: >> Fwiw, there have been already reports of similar soft lockups in >> fsnotify() on 4.14: https://lkml.org/lkml/2018/3/2/1038 >> >> We have also noticed similar softlockups with 4.14.22 here. > > Yeah. >

RE: kernel panics with 4.14.X versions

> From: Jan Kara > Sent: Monday, April 16, 2018 07:41 > ... > How easily can you hit this? Are you able to run debug kernels / inspect > crash dumps when the issue occurs? Also testing with the latest mainline > kernel (4.16) would be welcome whether this isn't just an issue with

RE: kernel panics with 4.14.X versions

> From: Jan Kara > Sent: Monday, April 16, 2018 07:41 > ... > How easily can you hit this? Are you able to run debug kernels / inspect > crash dumps when the issue occurs? Also testing with the latest mainline > kernel (4.16) would be welcome whether this isn't just an issue with the > backport

Re: kernel panics with 4.14.X versions

On 16 Apr 16:40, Jan Kara wrote: > Can you please run RIP through ./scripts/faddr2line to see where exactly > are we looping? I expect the loop iterating over marks to notify but better > be sure. > > How easily can you hit this? Are you able to run debug kernels / inspect > crash dumps when the

Re: kernel panics with 4.14.X versions

On 16 Apr 16:40, Jan Kara wrote: > Can you please run RIP through ./scripts/faddr2line to see where exactly > are we looping? I expect the loop iterating over marks to notify but better > be sure. > > How easily can you hit this? Are you able to run debug kernels / inspect > crash dumps when the

Re: kernel panics with 4.14.X versions

On Mon 16-04-18 15:25:50, Guillaume Morin wrote: > Fwiw, there have been already reports of similar soft lockups in > fsnotify() on 4.14: https://lkml.org/lkml/2018/3/2/1038 > > We have also noticed similar softlockups with 4.14.22 here. Yeah. > On 16 Apr 13:54, Pavlos Parissis wrote: > > > >

Re: kernel panics with 4.14.X versions

On Mon 16-04-18 15:25:50, Guillaume Morin wrote: > Fwiw, there have been already reports of similar soft lockups in > fsnotify() on 4.14: https://lkml.org/lkml/2018/3/2/1038 > > We have also noticed similar softlockups with 4.14.22 here. Yeah. > On 16 Apr 13:54, Pavlos Parissis wrote: > > > >