Quoting Eric Spakman <[EMAIL PROTECTED]>: > Hello, > > dnsmasq-2.31 doesn't build without a lot of tweaking, but before > going that road can you tell me on what occasion 2.27 is segfaulting? > If you have problems with 2.27 I don't think 2.31 will solve that. We > applied a fix to dnsmasq that solves a segfault problem which is also > applied upstream. > > Eric
Simon Kelley was able to determine the problem from a core dump I sent him. Here is his reply: Simon Kelley wrote: > Looking at the core dump, it's a different problem than the one fixed > in the 2.27 patch, but it's already fixed in 2.29 and later versions. > For reference, it's a memory overwrite which happens if the DNS > system gets presented with a query with an empty (zero-length) name. > > The malloc implementation in uclibc seems to fall over reliably with a > 1-byte overrun at either end of allocated memory, whilst the glibc one > seems to survive. It looks like glibc has some unused or nearly unsed > stuff there, whilst uclibc packs allocated blocks right next to each > other, so that real data gets overwritten. This is why both of these > bugs hit uclibc but nobody noticed then under glibc. > > I don't seem to have Eric's address, so Chris please could you pass > this on to him? > > I'm happy to work on making dnsmasq releases easier to put into > OpenWRT, new releases get tested by being linked against uclibc on > Debian, but > I don't currently have a WRT box to do testing on. Maybe we can work > something out? At very least I'm happy to get patches back. > > I'd also like to encourage openWRT to move the leases file onto flash > storage, and use the HAVE_BROKEN_RTC compile flag. That would fix most > of the "my local machine lose their names when I reboot openWRT" > problems which I see reported. > > Cheers, > > Simon. ------------------------------------------------------------------------ leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user Support Request -- http://leaf-project.org/
