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SubjectRe: Memory corruption in multithreaded user space program while calling fork
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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
>

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