[Sks-devel] Problems with sks_build

[Christopher Kleen]

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Hi @ *. !


I have problems while building a database using a dump.
If I use the sks build utility the process always ends at the following point, the size of the DB folder is always 77MB andthe process is just stopable with the kill signal.

> # /usr/sbin/sks build /var/lib/sks/dump/*.pgp -n 10 -cache 100
> === Running (fast)build... ===
> Loading keys...done

With a greater -n flag, the process generates a segmentation fault and the size of the DB folder is 7,5 MB:

> # /usr/sbin/sksbuild /var/lib/sks/dump/*.pgp-n 20 -cache 100
> Loading keys...done
> Segmentation fault

The fastbuild commands fails too.
I tried to use two different dumps. That is not the failure.
I use the SKS from the Debian repo. The version is: 1.1.1+dpkgv3-7. The system is: x86_64, 2.6.38.2 with grsec, Debian squeeze.

strace provides the following output:

In case of '-n 10':
> brk(0x14faa000) = 0x14faa000
> brk(0x150a3000) = 0x150a3000
> brk(0x1519c000) = 0x1519c000
> mmap(NULL, 2170880, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff862088000
> pread(5, "\0\0\0\0\1\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\10\1\5\0\0\0\0\0\0"..., 2048, 2048) = 2048
> brk(0x15295000) = 0x15295000
> brk(0x1538e000) = 0x1538e000
> brk(0x15487000) = 0x15487000
> brk(0x15580000) = 0x15580000
> futex(0x7ff87ad2c358, FUTEX_WAIT, 2, NULL
At this point nothing happens anymore.

In case of '-n 20':
> brk(0x3a001000) = 0x3a001000
> brk(0x3a0fa000) = 0x3a0fa000
> brk(0x3a1f3000) = 0x3a1f3000
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
> rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_RESTORER, 0x7f8f3b024030}, NULL, 8) = 0
> rt_sigreturn(0xb) = 881714904
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++
> Segmentation fault

I have no idea to fix it. Hours of using Google were in vain.
So I hope that anybody of you will have mercy with me =)


Yours,
Christopher


- --
Christopher Kleen
www.kleen.ch

PGP/GPG-Schlüssel: http://gpg.kleen.ch
S/MIME-Zertifikat: http://smime.kleen.ch
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