Re: [developer] fmd core dump

[Toomas Soome <tsoome@me.com>]

[-- Attachment #1: Type: text/plain, Size: 3768 bytes --]

Well, fmd_alloc is taking two arguments, size and flags, so we are trying to allocate 50 bytes there, but failing.

What does pmap -x core tell? Or pmap -S core? It is possible that you are not out of memory, but out of swap (to make swap reservations).

rgds,
toomas

> On 9. Aug 2024, at 17:43, Gabriele Bulfon via illumos-developer <developer@lists.illumos.org> wrote:
> 
> The problem happened again, but this time the rpool was not yet full.
> The pstack output shows again the same problem:
> 
>  feed68a5 _lwp_kill (5, 6, 22c4, fef45000, fef45000, c) + 15
>  fee68a7b raise    (6) + 2b
>  fee41cde abort    () + 10e
>  08079939 fmd_panic (8081400)
>  0807994b fmd_panic (8081400) + 12
>  08065394 fmd_alloc (50, 1) + 81
>  0806f6a5 fmd_event_create (1, d1da323a, 1bd4e8f, 0) + 18
>  08073ae3 fmd_module_timeout (fb8ef100, 2a1, d1da323a) + 20
>  0807bd21 fmd_timerq_exec (915db80) + 127
>  0807b299 fmd_thread_start (8131030) + 5b
>  feed1a3b _thrp_setup (fed82a40) + 88
>  feed1bd0 _lwp_start (fed82a40, 0, 0, 0, 0, 0)
>  
> I can't believe this global zone is out of virtual memory, it's running various zones with a lot of processes and they all goes fine.
> Only fmd here is going panic.
> What I found is an old issue I even forgot about: an infolog_hival file is being produced continuously.
> Running a tail -f on it I get a continuous output like:
> 
> port_address        w500304801d0a8808LH
> PhyIdentifier88 %/pci@0,0/pci8086,2f02@1/pci15d9,808@0((
> event_type      port_broadcast_sesTPclass       3resource.sysevent.EC_hba.ESC_sas_hba_port_broadcast  version  __ttl0(__todf▒'|▒,▒▒,^C
>  
> As I remember, this may go on for some time then it will stop.
> 
> Any idea?
> G
>  
>  
> Sonicle S.r.l. : http://www.sonicle.com <https://www.sonicle.com/>
> Music: http://www.gabrielebulfon.com <http://www.gabrielebulfon.com/>
> eXoplanets : https://gabrielebulfon.bandcamp.com/album/exoplanets
>  
>  
> 
> 
> Da: Toomas Soome via illumos-developer <developer@lists.illumos.org <mailto:developer@lists.illumos.org>>
> A: illumos-developer <developer@lists.illumos.org <mailto:developer@lists.illumos.org>>
> Data: 22 luglio 2024 16.10.42 CEST
> Oggetto: Re: [developer] fmd core dump
> 
> 
> 
> 
> On 22. Jul 2024, at 17:01, Gabriele Bulfon via illumos-developer <developer@lists.illumos.org> wrote:
> Hi, I have a couple of systems, installed in 2012 and updated up to illumos 2019 (will have to update to 2024 later).
> They periodically (every 3-4 months, sometimes earlier) create a core dump under /var/fm/fmd.
> Looks like fmd core dumped, so no email notice is sent, and we end up filling the rpool.
> I found  this link: https://support.oracle.com/knowledge/Sun%20Microsystems/1020519_1.html
> So here I attach the pstack of one of the dumps.
>  
> Any idea?
> 
>  
> fmd_alloc() does panic when we are out of memory:
>  
>         if (data == NULL)
>                 fmd_panic("insufficient memory (%u bytes needed)\n", size);
> You can try adding some more swap space perhaps?
>  
> rgds,
> toomas
> 
> Gabriele
>  
>  
> Sonicle S.r.l. : http://www.sonicle.com <https://www.sonicle.com/>
> Music: http://www.gabrielebulfon.com <http://www.gabrielebulfon.com/>
> eXoplanets : https://gabrielebulfon.bandcamp.com/album/exoplanets
>  
> <core.fmd.dump.pstack.txt>
> 
> illumos <https://illumos.topicbox.com/latest> / illumos-developer / see discussions <https://illumos.topicbox.com/groups/developer> + participants <https://illumos.topicbox.com/groups/developer/members> + delivery options <https://illumos.topicbox.com/groups/developer/subscription>Permalink <https://illumos.topicbox.com/groups/developer/Tde096911559aa716-M77a6e0329454caf1b3e91297>

[-- Attachment #2: Type: text/html, Size: 15155 bytes --]