Bind 9 and sdb

[Paul Kelly]

hi,

I have the same problem, i have just written a mysql sdb driver but the
nameserver dies whenever a recursion lookup is attempted, the recursion is
generated when a delegated name server record is looked up.. 

ie subdomain IN NS ns.anotherplace.com. 

a backtrace shows:

#0  dns_rdata_clone (src=0xdededede, target=0xff0b1b28) at rdata.c:369
369             REQUIRE(DNS_RDATA_VALIDFLAGS(src));
(gdb) bt
#0  dns_rdata_clone (src=0xdededede, target=0xff0b1b28) at rdata.c:369
#1  0xe5fcc in isc__rdatalist_current (rdataset=0xdededede,
rdata=0xff0b1b28) at rdatalist.c:124
#2  0xe67e4 in dns_rdataset_current (rdataset=0x6c93360, rdata=0xff0b1b28)
at rdataset.c:254
#3  0xea12c in fctx_getaddresses (fctx=0x6c932a8) at resolver.c:1440
#4  0xea8b0 in fctx_try (fctx=0x6c932a8) at resolver.c:1687
#5  0xeb8f8 in fctx_start (task=0x0, event=0x6c932f8) at resolver.c:1960
#6  0x19b348 in dispatch (manager=0x2203d0) at task.c:845
#7  0x19b60c in run (uap=0x2203d0) at task.c:974

Disabling recursion will prevent the coredump...

Any ideas?

Thanks
Paul Kelly


On Thu, 15 Feb 2001, jps wrote:

> 
> Hello,
> 
> has anyone tried successfully to use the postgres sdb sample
> provided with bind 9 (up to 9.1.1rc2) ?
> 
> I used the zonetodb program to convert a working zone file
> into a postgresql database, and recompiled bind9 to add
> pgsqldb.c support (without any changes).
> 
> it works fine:
> - when I dig 'ANY' my local zone.
> - when I dig 'A' records for hosts within this local zone.
> - when I dig 'NS' records for delegated sub-zones.
> 
> but when I dig 'A' records for any of the sub-zones:
> 
> Program received signal SIGSEGV, Segmentation fault.
> dns_rdata_clone (src=0xdededede, target=0xdededede) at rdata.c:369
> 369             REQUIRE(DNS_RDATA_VALIDFLAGS(src));
> 
> with this backtrace:
> 
> #0  dns_rdata_clone (src=0xdededede, target=0xdededede) at rdata.c:369
> #1  0x100b2338 in isc__rdatalist_current (rdataset=0xdededede, 
> rdata=0x7ffff8b8) at rdatalist.c:124
> #2  0x100b2c3c in dns_rdataset_current (rdataset=0x3004e0c0, 
> rdata=0x7ffff8b8) at rdataset.c:254
> #3  0x100b6b7c in fctx_getaddresses (fctx=0x3004e008) at resolver.c:1440
> #4  0x100b7338 in fctx_try (fctx=0x3004e008) at resolver.c:1687
> #5  0x100b8404 in fctx_start (task=0xdededede, event=0x3004e058) at 
> resolver.c:1960
> #6  0x10175ca8 in dispatch (manager=0x300280f8) at task.c:845
> #7  0x10176520 in isc__taskmgr_dispatch () at task.c:1202
> #8  0x101785b4 in evloop () at app.c:310
> #9  0x101788d4 in isc_app_run () at app.c:502
> #10 0x1000a778 in main (argc=3, argv=0x101a0000) at ./main.c:564
> 
> any idea ?
> 
> thanks,
> 
>  - Jean-Pierre.
> 
>