From: Kris Van Hees <kris.van.hees@oracle.com>
To: Nick Alcock <nix@esperi.org.uk>
Cc: Kris Van Hees <kris.van.hees@oracle.com>,
dtrace@lists.linux.dev, dtrace-devel@oss.oracle.com
Subject: Re: [PATCH 14/20] test: detect strlen corruption of strtab rodata and zeros
Date: Fri, 6 Nov 2026 16:26:32 -0500 [thread overview]
Message-ID: <au5GCEkGWGdhNZDb@oracle.com> (raw)
In-Reply-To: <87se1ertqu.fsf@esperi.org.uk>
On Fri, Nov 06, 2026 at 01:10:01PM +0000, Nick Alcock wrote:
> On 30 Oct 2026, Kris Van Hees verbalised:
>
> > + * ASSERTION: strlen() must not overwrite the IPv6 lookup table in the
> > + * rodata block of the strtab map.
>
> ... I'm not surprised you didn't spot this. Who would expect a strlen to
> overwrite anything? But now it works via dt_bpf_probe_read_str, it's
> writing into (a temporary entry in) the strtab as a side-effect, with a
> STRSZ max...
So, R-b?
prev parent reply other threads:[~2026-11-06 21:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-30 19:36 [PATCH 14/20] test: detect strlen corruption of strtab rodata and zeros Kris Van Hees
2026-11-06 13:10 ` Nick Alcock
2026-11-06 13:14 ` Nick Alcock
2026-11-06 21:26 ` Kris Van Hees [this message]
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