On Wed, 2021-04-14 at 07:26 +0200, Dmitry Vyukov wrote:
>
> > [ 15.428008]
> > ==
> > [ 15.428011] BUG: KASAN: vmalloc-out-of-bounds in
> > crash_setup_memmap_entries+0x17e/0x3a0
>
> This looks like a genuine kernel bug on first
KASAN calltrace record in RT
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On Wed, 2021-04-14 at 07:29 +, Zhang, Qiang wrote:
>
> if CONFIG_PREEMPT_RT is enabled and but not in preemptible, the prealloc
> should be allowed
>
>No, you can't take an rtmutex
On Wed, 2021-04-14 at 07:29 +, Zhang, Qiang wrote:
>
> if CONFIG_PREEMPT_RT is enabled and but not in preemptible, the prealloc
> should be allowed
No, you can't take an rtmutex when not preemptible.
-Mike
calltrace record in RT
[Please note: This e-mail is from an EXTERNAL e-mail address]
On Tue, 2021-04-13 at 17:29 +0200, Dmitry Vyukov wrote:
> On Tue, Apr 6, 2021 at 10:26 AM Zhang, Qiang
> wrote:
> >
> > Hello everyone
> >
> > In RT system, after Andrew test,
el@vger.kernel.org;
> kasan-...@googlegroups.com
> 主题: Re: Question on KASAN calltrace record in RT
>
> [Please note: This e-mail is from an EXTERNAL e-mail address]
>
> On Tue, Apr 6, 2021 at 10:26 AM Zhang, Qiang
> wrote:
> >
> > Hello everyone
> >
> > In R
发件人: Dmitry Vyukov
发送时间: 2021年4月13日 23:29
收件人: Zhang, Qiang
抄送: Andrew Halaney; andreyk...@gmail.com; ryabinin@gmail.com;
a...@linux-foundation.org; linux-kernel@vger.kernel.org;
kasan-...@googlegroups.com
主题: Re: Question on KASAN calltrace record
On Wed, 2021-04-14 at 07:26 +0200, Dmitry Vyukov wrote:
> On Wed, Apr 14, 2021 at 6:00 AM Mike Galbraith wrote:
>
> > [0.692437] BUG: sleeping function called from invalid context at
> > kernel/locking/rtmutex.c:943
> > [0.692439] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1,
On Wed, Apr 14, 2021 at 6:00 AM Mike Galbraith wrote:
>
> On Tue, 2021-04-13 at 17:29 +0200, Dmitry Vyukov wrote:
> > On Tue, Apr 6, 2021 at 10:26 AM Zhang, Qiang
> > wrote:
> > >
> > > Hello everyone
> > >
> > > In RT system, after Andrew test, found the following calltrace ,
> > > in KASA
On Tue, 2021-04-13 at 17:29 +0200, Dmitry Vyukov wrote:
> On Tue, Apr 6, 2021 at 10:26 AM Zhang, Qiang
> wrote:
> >
> > Hello everyone
> >
> > In RT system, after Andrew test, found the following calltrace ,
> > in KASAN, we record callstack through stack_depot_save(), in this function,
> >
On Tue, Apr 6, 2021 at 10:26 AM Zhang, Qiang wrote:
>
> Hello everyone
>
> In RT system, after Andrew test, found the following calltrace ,
> in KASAN, we record callstack through stack_depot_save(), in this function,
> may be call alloc_pages, but in RT, the spin_lock replace with
> rt_mut
Hello everyone
In RT system, after Andrew test, found the following calltrace ,
in KASAN, we record callstack through stack_depot_save(), in this function, may
be call alloc_pages, but in RT, the spin_lock replace with
rt_mutex in alloc_pages(), if before call this function, the irq is dis
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