linux-kernel - Re: [mm/vmalloc] 5c1f4e690e: BUG:sleeping_function_called_from_invalid_context_at_mm/page

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Date:   Tue, 13 Jul 2021 19:26:53 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     kernel test robot <oliver.sang@...el.com>,
        Uladzislau Rezki <urezki@...il.com>,
        Mel Gorman <mgorman@...e.de>, Hillf Danton <hdanton@...a.com>,
        Michal Hocko <mhocko@...e.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Oleksiy Avramchenko <oleksiy.avramchenko@...ymobile.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        kernel test robot <lkp@...el.com>
Subject: Re: [mm/vmalloc] 5c1f4e690e:
 BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c

On Tue, Jul 13, 2021 at 11:19:29AM -0700, Linus Torvalds wrote:
> Does anybody see what the problem is there?
> 
> There's an odd report _after_ the warning:
> 
> [  131.345319] raw_local_irq_restore() called with IRQs enabled
> [  131.366561] RIP: 0010:warn_bogus_irq_restore+0x1d/0x20
> [  131.433334]  __alloc_pages_bulk+0xbb8/0xf20

That's the key -- __alloc_pages_bulk has interrupts disabled and then
page_owner allocates memory for the stack dump.  Mel has a fix; I think
we're just waiting for it to hit your tree.