re: CVS commit: src/lib/libkvm

[matthew green <mrg%eterna.com.au@localhost>]

"Maxime Villard" writes:
> Module Name:	src
> Committed By:	maxv
> Date:		Wed Feb  7 14:03:18 UTC 2018
> 
> Modified Files:
> 	src/lib/libkvm: kvm.c
> 
> Log Message:
> Keep /dev/ksyms open in _kvm_open(). This way /dev/ksyms can be put into
> $g_kmem without breaking the tools that need kmem+ksyms.
> 
> Discussed on tech-kern@ three weeks ago. The original issue was reported
> by maya@, the patch was written by Tom Ivar Helbekkmo, ok christos@.

hmmm, it just occurs to me that this is not safe against me
re-opening /proc/mypid/N to get another fd on /dev/ksyms as
a normal user.

i wonder if this pattern exists elsewhere...


.mrg.