[nsd-users] SIGSEGV in rbtree_find_less_equal

[Jeroen Koekkoek]

Hi Chris,

Thanks for reporting! I'll look into this.

- Jeroen


On Wed, 2024-10-02 at 14:57 +0000, Chris LaVallee via nsd-users wrote:
> 
> Hi,
> 
> 
> I found a reproducible seg fault with a DNSSEC signed zone and
> overlapping config. I'm running NSD 4.10.1. Here's how to reproduce.
> 
> 
> 2 zones in nsd.conf:
> 
> 
> zone:
>         name:     "foo.com."
>         zonefile:     "/zones/foo.com.zone.signed"
> 
> 
> zone:
>         name:     "bar.foo.com."
>         zonefile: "/zones/bar.foo.com.zone"
> 
> 
> 
> 
> Zone files:
> 
> 
> foo.com.zone.signed is DNSSEC signed with a record for a.bar (A
> record or anything)
> bar.foo.com.zone doesn't exist  (but it's in nsd.conf shown above)
> 
> 
> 
> 
> Steps:
> 1) Startup NSD
> 2) touch foo.com.zone.signed
> 3) reload NSD
> 
> 
> 
> 
> nsd.log will say:
> [2024-10-02 07:19:58.691] nsd[962739]: info: control cmd:  reload
> [2024-10-02 07:19:58.845] nsd[962752]: error: handle_reload_cmd:
> reload closed cmd channel
> [2024-10-02 07:19:58.845] nsd[962752]: warning: Reload process 962740
> failed, continuing with old database
> 
> 
> core dump says SIGSEGV in rbtree_find_less_equal
> 
> 
> 
> 
> Chris LaVallee
> Edgio (formally EdgeCast Networks)
> 
> 
> 
> 
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