Re: stack traces and zombie tasks

2017-12-19 Thread Ingo Molnar
* Ingo Molnar wrote: > > This obviously fixes the problem, so you can add > > > > Reported-and-tested-by: Miroslav Benes > > Great. > > Josh, mind sending a changelogged version, or should I distill a commit out > of > this discussion, for tip:x86/urgent? ... never mind, later in my mbox

Re: stack traces and zombie tasks

2017-12-18 Thread Ingo Molnar
* Miroslav Benes wrote: > On Sun, 17 Dec 2017, Josh Poimboeuf wrote: > > > On Fri, Dec 15, 2017 at 07:51:45AM -0800, Andy Lutomirski wrote: > > > On Fri, Dec 15, 2017 at 4:54 AM, Miroslav Benes wrote: > > > > Hi, > > > > > > > > commit 1959a60182f4 ("x86/dumpstack: Pin the target stack when du

Re: stack traces and zombie tasks

2017-12-18 Thread Miroslav Benes
On Sun, 17 Dec 2017, Josh Poimboeuf wrote: > On Fri, Dec 15, 2017 at 07:51:45AM -0800, Andy Lutomirski wrote: > > On Fri, Dec 15, 2017 at 4:54 AM, Miroslav Benes wrote: > > > Hi, > > > > > > commit 1959a60182f4 ("x86/dumpstack: Pin the target stack when dumping > > > it") slightly changed the beh

Re: stack traces and zombie tasks

2017-12-17 Thread Josh Poimboeuf
On Fri, Dec 15, 2017 at 07:51:45AM -0800, Andy Lutomirski wrote: > On Fri, Dec 15, 2017 at 4:54 AM, Miroslav Benes wrote: > > Hi, > > > > commit 1959a60182f4 ("x86/dumpstack: Pin the target stack when dumping > > it") slightly changed the behaviour of stack traces dumping for zombie > > tasks. > >

Re: stack traces and zombie tasks

2017-12-15 Thread Andy Lutomirski
On Fri, Dec 15, 2017 at 4:54 AM, Miroslav Benes wrote: > Hi, > > commit 1959a60182f4 ("x86/dumpstack: Pin the target stack when dumping > it") slightly changed the behaviour of stack traces dumping for zombie > tasks. > > Before the commit (well, this is older SLE12 kernel, but that should not > m

stack traces and zombie tasks

2017-12-15 Thread Miroslav Benes
Hi, commit 1959a60182f4 ("x86/dumpstack: Pin the target stack when dumping it") slightly changed the behaviour of stack traces dumping for zombie tasks. Before the commit (well, this is older SLE12 kernel, but that should not matter), if one called 'cat /proc//stack', they would get something