> On Apr 4, 2019, at 10:28 AM, Thomas Gleixner wrote:
>
>> On Thu, 4 Apr 2019, Tycho Andersen wrote:
>>leaq-PTREGS_SIZE(%rax), %rsp
>>UNWIND_HINT_FUNC sp_offset=PTREGS_SIZE
>>
>> +/*
>> + * If we oopsed in an interrupt handler, interrupts may be off. Let's
>> turn
>> +
On Thu, 4 Apr 2019, Tycho Andersen wrote:
> leaq-PTREGS_SIZE(%rax), %rsp
> UNWIND_HINT_FUNC sp_offset=PTREGS_SIZE
>
> + /*
> + * If we oopsed in an interrupt handler, interrupts may be off. Let's
> turn
> + * them back on before going back to "normal" code.
> +
- stepping on del button while browsing though CCs.
On 2019-04-04 09:47:27 [-0600], Tycho Andersen wrote:
> > Hmm. do_exit() isn't really meant to be "try your best to leave the
> > system somewhat usable without returning" -- it's a function that,
> > other than in OOPSes, is called from a
On Wed, Apr 03, 2019 at 09:12:16PM -0700, Andy Lutomirski wrote:
> On Wed, Apr 3, 2019 at 6:42 PM Tycho Andersen wrote:
> >
> > On Wed, Apr 03, 2019 at 05:12:56PM -0700, Andy Lutomirski wrote:
> > > On Wed, Apr 3, 2019 at 10:36 AM Khalid Aziz
> > > wrote:
> > > >
> > > > From: Tycho Andersen
>
On Wed, Apr 3, 2019 at 6:42 PM Tycho Andersen wrote:
>
> On Wed, Apr 03, 2019 at 05:12:56PM -0700, Andy Lutomirski wrote:
> > On Wed, Apr 3, 2019 at 10:36 AM Khalid Aziz wrote:
> > >
> > > From: Tycho Andersen
> > >
> > > Oopsing might kill the task, via rewind_stack_do_exit() at the bottom,
On Wed, Apr 03, 2019 at 05:12:56PM -0700, Andy Lutomirski wrote:
> On Wed, Apr 3, 2019 at 10:36 AM Khalid Aziz wrote:
> >
> > From: Tycho Andersen
> >
> > Oopsing might kill the task, via rewind_stack_do_exit() at the bottom, and
> > that might sleep:
> >
>
>
> > diff --git
On Wed, Apr 3, 2019 at 10:36 AM Khalid Aziz wrote:
>
> From: Tycho Andersen
>
> Oopsing might kill the task, via rewind_stack_do_exit() at the bottom, and
> that might sleep:
>
> diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
> index 9d5c75f02295..7891add0913f 100644
> ---
From: Tycho Andersen
Oopsing might kill the task, via rewind_stack_do_exit() at the bottom, and
that might sleep:
Aug 23 19:30:27 xpfo kernel: [ 38.302714] BUG: sleeping function called from
invalid context at ./include/linux/percpu-rwsem.h:33
Aug 23 19:30:27 xpfo kernel: [ 38.303837]
