Hi,
This is fixed in latest snapshot:
OpenBSD 6.6-beta (GENERIC.MP) #332: Sun Sep 29 11:17:27 MDT 2019
[email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
Thanks to eric@ who contacted me off the list and fixed this problem in
libc/asr/res_send_async.c rev 1.39.
On Thu, Sep 19, 2019 at 02:39:22PM +0000, Mikolaj Kucharski wrote:
> Hi,
>
> I do periodic `smtpctl spf walk` of Big Mail Corps domains and
> some other domains which I know I'm registered at.
>
> smtpctl spf walk < nospamd-domains.txt
>
> wc -l < nospamd-domains.txt
> 103
>
> In recent weeks I've noticed that above command gets stuck with
> smtpctl spinning at 80%+ of CPU.
>
> I can reproduce this once in a while, not always. I've rebuild
> smtpctl and libevent with env DEBUG=-g CFLAGS='-O0 -pipe -g' make
> and I got following gdb backtrace when I find the process stuck:
>
> (gdb) bt
> #0 _thread_sys_read () at -:3
> #1 0x0000030cc63c6f9e in _libc_read_cancel (fd=Variable "fd" is not
> available.) at /usr/src/lib/libc/sys/w_read.c:27
> #2 0x0000030cc63dc01b in res_send_async_run (as=0x30cdac73500,
> ar=0x7f7ffffce808) at /usr/src/lib/libc/asr/res_send_async.c:581
> #3 0x0000030cc63d53d3 in _libc_asr_run (as=0x30cdac73500, ar=Variable "ar"
> is not available.) at /usr/src/lib/libc/asr/asr.c:148
> #4 0x0000030cd7cc8bd4 in event_asr_dispatch (fd=62, ev=2, arg=0x30c93d4e000)
> at /data/04-spf-walk-spin/libevent/event.c:945
> #5 0x0000030cd7cc7eff in event_process_active (base=0x30cda925400) at
> /data/04-spf-walk-spin/libevent/event.c:333
> #6 0x0000030cd7cc767b in event_base_loop (base=0x30cda925400, flags=0) at
> /data/04-spf-walk-spin/libevent/event.c:483
> #7 0x0000030cd7cc73e7 in event_loop (flags=0) at
> /data/04-spf-walk-spin/libevent/event.c:409
> #8 0x0000030cd7cc7399 in event_dispatch () at
> /data/04-spf-walk-spin/libevent/event.c:347
> #9 0x0000030a4c91e202 in spfwalk (argc=-1, argv=0x108) at
> /data/04-spf-walk-spin/smtpd/smtpctl/../spfwalk.c:100
> #10 0x0000030a4c8fe16d in do_spf_walk (argc=0, argv=0x0) at
> /data/04-spf-walk-spin/smtpd/smtpctl/../smtpctl.c:1034
> #11 0x0000030a4c8f2a7f in cmd_run (argc=2, argv=0x7f7ffffd3120) at
> /data/04-spf-walk-spin/smtpd/smtpctl/../parser.c:219
> #12 0x0000030a4c8fc4f7 in main (argc=3, argv=0x7f7ffffd3118) at
> /data/04-spf-walk-spin/smtpd/smtpctl/../smtpctl.c:1107
>
> This is from:
>
> OpenBSD 6.6-beta (GENERIC.MP) #313: Tue Sep 10 23:30:52 MDT 2019
> [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
>
> Could someone hit me with a cluestick, how to dive into this deeper?
>
--
Regards,
Mikolaj
