Re: [PATCH v5 19/30] arm64: add POE signal support

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

 



On Tue, Oct 15, 2024 at 10:59:11AM +0100, Joey Gouly wrote:
> On Mon, Oct 14, 2024 at 06:10:23PM +0100, Will Deacon wrote:

> > Looking a little more at this, I think we have quite a weird behaviour
> > on arm64 as it stands. It looks like we rely on the signal frame to hold
> > the original POR_EL0 so, if for some reason we fail to allocate space
> > for the POR context, I think we'll return back from the signal with
> > POR_EL0_INIT. That seems bad?

> If we don't allocate space for POR_EL0, I think the program recieves SIGSGEV?

...

> So I think it's "fine"?

Yeah, there's a bunch of other stuff would go badly if we tried to carry
on after failing to allocate a signal frame.

Attachment: signature.asc
Description: PGP signature


[Index of Archives]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Device Mapper]

  Powered by Linux