Re: [PATCH 00/35] Shadow stacks for userspace

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

 



On Fri, Feb 04, 2022 at 01:08:25AM +0000, Edgecombe, Rick P wrote:

> > So how is that going to work? altstack is not an esoteric corner
> > case.
> 
> My understanding is that the main usages for the signal stack were
> handling stack overflows and corruption. Since the shadow stack only
> contains return addresses rather than large stack allocations, and is
> not generally writable or pivotable, I thought there was a good
> possibility an alt shadow stack would not end up being especially
> useful. Does it seem like reasonable guesswork?

altstacks are also used in userspace threading implemenations.



[Index of Archives]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux FS]     [Yosemite Forum]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux