Re: Regression with kernel 6.4 "swapper: page allocation failure: order:0, mode:0x100(__GFP_ZERO)

[Helge Deller <deller@gmx.de>]

On 8/6/23 21:54, Helge Deller wrote:
> On 8/6/23 21:21, Christoph Biedl wrote:
>> Christoph Biedl wrote...
>>
>>> Mike Rapoport wrote...
>>>
>>>> Can you check if the patch helps:
>>>>
>>>> diff --git a/arch/parisc/mm/fixmap.c b/arch/parisc/mm/fixmap.c
>>>> index cc15d737fda6..ae3493dae9dc 100644
>>> (...)
>>>
>>> Yes, everything's fine now. Applied on top of v6.5-rc4, there
>>> were some offsets.
>>
>> Now confirmed on top of 6.4.8 as well.
>>
>> However, there's now an issue when reconfiguring the locales package in
>> Debian:
>>
>>      Setting up locales (2.37-7) ...
>>      Generating locales (this might take a while)...
>>        C.UTF-8...cannot map archive header: Invalid argument
>>       done
>>
>> Using 6.3.13, everything is fine.
>>
>> There a Debian bug report #552233 from very old ages about this, the
>> solution suggests this is related to memory management so it might apply
>> here, too.
>
> I'm afraid that my patch:
> commit 32832a407a7178eec3215fad9b1a3298c14b0d69
> Author: Helge Deller <deller@gmx.de>
> Date:   Fri Jul 21 17:24:31 2023 +0200
>
>      io_uring: Fix io_uring mmap() by using architecture-provided get_unmapped_area()
>
> might be the culprit...

could you test this (copy&pasted) patch?
(it will break io_uring, but this is just a test)

diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index ca2d537e25b1..6c94e8da19b7 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -117,7 +117,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
         do_color_align = 0;
         if (filp || (flags & MAP_SHARED))
                 do_color_align = 1;
-       filp_pgoff = GET_FILP_PGOFF(filp, addr);
+       filp_pgoff = GET_FILP_PGOFF(filp, 0);

         if (flags & MAP_FIXED) {
                 /* Even MAP_FIXED mappings must reside within TASK_SIZE */