linux-kernel - Re: Memory corruption in multithreaded user space program while calling fork

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <306e4057-5e40-f0c1-d06b-2adab0eee37d@gmail.com>
Date:   Sun, 2 Jul 2023 21:11:15 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Jacob Young <jacobly.alt@...il.com>
Cc:     Suren Baghdasaryan <surenb@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Laurent Dufour <ldufour@...ux.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux Memory Management <linux-mm@...ck.org>,
        Linux PowerPC <linuxppc-dev@...ts.ozlabs.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: Memory corruption in multithreaded user space program while
 calling fork

On 7/2/23 19:40, Jacob Young wrote:
>> Jacob: Can you repeat bisection please? Why did you skip VMA lock-based
> page fault commits in your bisection?
> 
> All skips were due to compile errors of the form:
> make[3]: 'install_headers' is up to date.
> In file included from ./include/linux/memcontrol.h:20,
>                  from ./include/linux/swap.h:9,
>                  from ./include/linux/suspend.h:5,
>                  from arch/x86/kernel/asm-offsets.c:14:
> ./include/linux/mm.h: In function ‘vma_try_start_write’:
> ./include/linux/mm.h:702:37: error: ‘struct vm_area_struct’ has no member named ‘vm_lock’
>   702 |         if (!down_write_trylock(&vma->vm_lock->lock))
>       |                                     ^~
> ./include/linux/mm.h:706:22: error: ‘struct vm_area_struct’ has no member named ‘vm_lock’
>   706 |         up_write(&vma->vm_lock->lock);
>       |                      ^~
> make[1]: *** [scripts/Makefile.build:114: arch/x86/kernel/asm-offsets.s] Error 1
> make: *** [Makefile:1286: prepare0] Error 2
> 

1. Please don't send HTML emails as mailing lists reject them.
2. Reply inline with appropriate context, rather than top-post reply.

-- 
An old man doll... just what I always wanted! - Clara