Re: [PATCH] fs: 9p: avoid warning during xattr allocation

From: Dominique Martinet
Date: Mon Mar 04 2024 - 08:11:05 EST


Fedor Pchelkin wrote on Fri, Feb 02, 2024 at 03:13:17PM +0300:
> An invalid server may reply with an xattr size which still fits into
> ssize_t but is large enough to cause splat during kzalloc().


Ah, sorry for not replying to this earlier.. and I had forgotten about
it when something similar came up just now.

I've submitted a patch to limit such allocations to 64k:
https://lkml.kernel.org/r/20240304-xattr_maxsize-v1-1-322357ec6bdf@xxxxxxxxxxxxx

Would you agree this makes this patch obsolete?

I'll go ahead and add the reported-by/closes you cited in this mail to
my commit.
--
Dominique Martinet | Asmadeus