> Oh ups, yeah of course :)
> https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git/log/?h=taskstats_syzbot
You forgot to update the commit msg. It looks good to me modulo that.
Thanks,
Andrea
On Tue, Oct 08, 2019 at 05:26:59PM +0200, Andrea Parri wrote:
> On Tue, Oct 08, 2019 at 04:24:14PM +0200, Christian Brauner wrote:
> > On Tue, Oct 08, 2019 at 04:20:35PM +0200, Andrea Parri wrote:
> > > On Mon, Oct 07, 2019 at 04:18:26PM +0200, Dmitry Vyukov wrote:
> > > > On Mon, Oct 7, 2019 at
On Tue, Oct 08, 2019 at 04:24:14PM +0200, Christian Brauner wrote:
> On Tue, Oct 08, 2019 at 04:20:35PM +0200, Andrea Parri wrote:
> > On Mon, Oct 07, 2019 at 04:18:26PM +0200, Dmitry Vyukov wrote:
> > > On Mon, Oct 7, 2019 at 4:14 PM Andrea Parri
> > > wrote:
> > > >
> > > > > > > static
On Tue, Oct 08, 2019 at 04:20:35PM +0200, Andrea Parri wrote:
> On Mon, Oct 07, 2019 at 04:18:26PM +0200, Dmitry Vyukov wrote:
> > On Mon, Oct 7, 2019 at 4:14 PM Andrea Parri wrote:
> > >
> > > > > > static struct taskstats *taskstats_tgid_alloc(struct task_struct
> > > > > > *tsk)
> > > > > >
On Mon, Oct 07, 2019 at 04:18:26PM +0200, Dmitry Vyukov wrote:
> On Mon, Oct 7, 2019 at 4:14 PM Andrea Parri wrote:
> >
> > > > > static struct taskstats *taskstats_tgid_alloc(struct task_struct
> > > > > *tsk)
> > > > > {
> > > > > struct signal_struct *sig = tsk->signal;
> > > > > -
On Mon, Oct 7, 2019 at 4:14 PM Andrea Parri wrote:
>
> > > > static struct taskstats *taskstats_tgid_alloc(struct task_struct *tsk)
> > > > {
> > > > struct signal_struct *sig = tsk->signal;
> > > > - struct taskstats *stats;
> > > > + struct taskstats *stats_new, *stats;
> > > >
> > > static struct taskstats *taskstats_tgid_alloc(struct task_struct *tsk)
> > > {
> > > struct signal_struct *sig = tsk->signal;
> > > - struct taskstats *stats;
> > > + struct taskstats *stats_new, *stats;
> > >
> > > - if (sig->stats || thread_group_empty(tsk))
> > > -
On Mon, Oct 07, 2019 at 04:08:41PM +0200, Dmitry Vyukov wrote:
> On Mon, Oct 7, 2019 at 3:55 PM Christian Brauner
> wrote:
> >
> > On Mon, Oct 07, 2019 at 03:50:47PM +0200, Dmitry Vyukov wrote:
> > > On Mon, Oct 7, 2019 at 3:18 PM Andrea Parri
> > > wrote:
> > > >
> > > > On Mon, Oct 07, 2019
On Mon, Oct 7, 2019 at 3:55 PM Christian Brauner
wrote:
>
> On Mon, Oct 07, 2019 at 03:50:47PM +0200, Dmitry Vyukov wrote:
> > On Mon, Oct 7, 2019 at 3:18 PM Andrea Parri wrote:
> > >
> > > On Mon, Oct 07, 2019 at 01:01:17PM +0200, Christian Brauner wrote:
> > > > When assiging and testing
On Mon, Oct 07, 2019 at 03:50:47PM +0200, Dmitry Vyukov wrote:
> On Mon, Oct 7, 2019 at 3:18 PM Andrea Parri wrote:
> >
> > On Mon, Oct 07, 2019 at 01:01:17PM +0200, Christian Brauner wrote:
> > > When assiging and testing taskstats in taskstats_exit() there's a race
> > > when writing and
On Mon, Oct 7, 2019 at 3:18 PM Andrea Parri wrote:
>
> On Mon, Oct 07, 2019 at 01:01:17PM +0200, Christian Brauner wrote:
> > When assiging and testing taskstats in taskstats_exit() there's a race
> > when writing and reading sig->stats when a thread-group with more than
> > one thread exits:
> >
On Mon, Oct 07, 2019 at 03:18:04PM +0200, Andrea Parri wrote:
> On Mon, Oct 07, 2019 at 01:01:17PM +0200, Christian Brauner wrote:
> > When assiging and testing taskstats in taskstats_exit() there's a race
> > when writing and reading sig->stats when a thread-group with more than
> > one thread
On Mon, Oct 07, 2019 at 01:01:17PM +0200, Christian Brauner wrote:
> When assiging and testing taskstats in taskstats_exit() there's a race
> when writing and reading sig->stats when a thread-group with more than
> one thread exits:
>
> cpu0:
> thread catches fatal signal and whole thread-group
When assiging and testing taskstats in taskstats_exit() there's a race
when writing and reading sig->stats when a thread-group with more than
one thread exits:
cpu0:
thread catches fatal signal and whole thread-group gets taken down
do_exit()
do_group_exit()
taskstats_exit()
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