Re: Current break round up

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


You're right! I tested it and I could write and read above the current
break after I call brk. I'll will test the page border too. Thanks.


On Wed, Oct 1, 2008 at 3:43 PM, Frank Kotler <fbkotler@xxxxxxxxxxx> wrote:
> Kircsi Tibor wrote:
>> Hi,
>> Sorry for my english. I started learn assembly again after 15 years.
>> Now, I'm learning about memory management and sys_brk system call. I've
>> created a really simple program, which try to extend the heap size. I've
>> read, when sys_brk is called with the new break address(last usable
>> address of the heap or data segment), it will be rounded up to the next
>> nearest page, but it didn't. Am I misundestand somthing?
> I've noticed this. Seems to be related to kernel version ( here). May be a "bug"? I think you can access memory up to the top of the page (what you/we would "expect" brk to return). I don't know what to make of it.
> Best,
> Frank
To unsubscribe from this list: send the line "unsubscribe linux-assembly" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at

[Kernel Newbies]     [Security]     [Linux C Programming]     [Linux for Hams]     [DCCP]     [Netfilter]     [Bugtraq]     [Photo]     [Yosemite]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]     [Video 4 Linux]

  Powered by Linux