From nobody Tue Oct 01 20:03:23 2024 X-Original-To: freebsd-hardware@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4XJ85H5n0Fz5YJ86 for ; Tue, 01 Oct 2024 20:03:31 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost1.sentex.ca (smarthost1.sentex.ca [IPv6:2607:f3e0:0:1::12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smarthost1.sentex.ca", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4XJ85G6P5Vz4hq0 for ; Tue, 1 Oct 2024 20:03:30 +0000 (UTC) (envelope-from mike@sentex.net) Authentication-Results: mx1.freebsd.org; dkim=none; spf=pass (mx1.freebsd.org: domain of mike@sentex.net designates 2607:f3e0:0:1::12 as permitted sender) smtp.mailfrom=mike@sentex.net; dmarc=none Received: from pyroxene2a.sentex.ca (pyroxene19.sentex.ca [199.212.134.19]) by smarthost1.sentex.ca (8.18.1/8.18.1) with ESMTPS id 491K3OOp043971 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=FAIL); Tue, 1 Oct 2024 16:03:24 -0400 (EDT) (envelope-from mike@sentex.net) Received: from [IPV6:2607:f3e0:0:4:eca3:ea83:d867:1a0] ([IPv6:2607:f3e0:0:4:eca3:ea83:d867:1a0]) by pyroxene2a.sentex.ca (8.18.1/8.15.2) with ESMTPS id 491K3NGW049914 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO); Tue, 1 Oct 2024 16:03:23 -0400 (EDT) (envelope-from mike@sentex.net) Message-ID: <8b730043-a759-4bb4-b7ee-323a317ce6d2@sentex.net> Date: Tue, 1 Oct 2024 16:03:23 -0400 List-Id: General discussion of FreeBSD hardware List-Archive: https://lists.freebsd.org/archives/freebsd-hardware List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hardware@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: watchdog timer programming To: Chris6 via freebsd-hardware References: <3065debc-8d4f-4487-abbb-c9408810cea6@sentex.net> <86plotbk5b.fsf@cthulhu.stephaner.labo.int> <9008b389-ab06-401d-9a95-84f849ca602a@sentex.net> <86plosdv48.fsf@cthulhu.stephaner.labo.int> <78e9461c-b93d-403f-b3a1-3568548b9283@sentex.net> <86h6a1egcs.fsf@cthulhu.stephaner.labo.int> <868qvddwph.fsf@cthulhu.stephaner.labo.int> <2d850ccc-2e90-4a1a-927c-045d4750d570@sentex.net> <864j5xehes.fsf@cthulhu.stephaner.labo.int> <86zfnocpb8.fsf@cthulhu.stephaner.labo.int> Content-Language: en-US From: mike tancsa Autocrypt: addr=mike@sentex.net; keydata= xsBNBFywzOMBCACoNFpwi5MeyEREiCeHtbm6pZJI/HnO+wXdCAWtZkS49weOoVyUj5BEXRZP xflV2ib2hflX4nXqhenaNiia4iaZ9ft3I1ebd7GEbGnsWCvAnob5MvDZyStDAuRxPJK1ya/s +6rOvr+eQiXYNVvfBhrCfrtR/esSkitBGxhUkBjOti8QwzD71JVF5YaOjBAs7jZUKyLGj0kW yDg4jUndudWU7G2yc9GwpHJ9aRSUN8e/mWdIogK0v+QBHfv/dsI6zVB7YuxCC9Fx8WPwfhDH VZC4kdYCQWKXrm7yb4TiVdBh5kgvlO9q3js1yYdfR1x8mjK2bH2RSv4bV3zkNmsDCIxjABEB AAHNHW1pa2UgdGFuY3NhIDxtaWtlQHNlbnRleC5uZXQ+wsCOBBMBCAA4FiEEmuvCXT0aY6hs 4SbWeVOEFl5WrMgFAl+pQfkCGwMFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AACgkQeVOEFl5W rMiN6ggAk3H5vk8QnbvGbb4sinxZt/wDetgk0AOR9NRmtTnPaW+sIJEfGBOz47Xih+f7uWJS j+uvc9Ewn2Z7n8z3ZHJlLAByLVLtcNXGoRIGJ27tevfOaNqgJHBPbFOcXCBBFTx4MYMM4iAZ cDT5vsBTSaM36JZFtHZBKkuFEItbA/N8ZQSHKdTYMIA7A3OCLGbJBqloQ8SlW4MkTzKX4u7R yefAYQ0h20x9IqC5Ju8IsYRFacVZconT16KS81IBceO42vXTN0VexbVF2rZIx3v/NT75r6Vw 0FlXVB1lXOHKydRA2NeleS4NEG2vWqy/9Boj0itMfNDlOhkrA/0DcCurMpnpbM7ATQRcsMzk AQgA1Dpo/xWS66MaOJLwA28sKNMwkEk1Yjs+okOXDOu1F+0qvgE8sVmrOOPvvWr4axtKRSG1 t2QUiZ/ZkW/x/+t0nrM39EANV1VncuQZ1ceIiwTJFqGZQ8kb0+BNkwuNVFHRgXm1qzAJweEt RdsCMohB+H7BL5LGCVG5JaU0lqFU9pFP40HxEbyzxjsZgSE8LwkI6wcu0BLv6K6cLm0EiHPO l5G8kgRi38PS7/6s3R8QDsEtbGsYy6O82k3zSLIjuDBwA9GRaeigGppTxzAHVjf5o9KKu4O7 gC2KKVHPegbXS+GK7DU0fjzX57H5bZ6komE5eY4p3oWT/CwVPSGfPs8jOwARAQABwsB2BBgB CAAgFiEEmuvCXT0aY6hs4SbWeVOEFl5WrMgFAl+pQfkCGwwACgkQeVOEFl5WrMiVqwf9GwU8 c6cylknZX8QwlsVudTC8xr/L17JA84wf03k3d4wxP7bqy5AYy7jboZMbgWXngAE/HPQU95NM aukysSnknzoIpC96XZJ0okLBXVS6Y0ylZQ+HrbIhMpuQPoDweoF5F9wKrsHRoDaUK1VR706X rwm4HUzh7Jk+auuMYfuCh0FVlFBEuiJWMLhg/5WCmcRfiuB6F59ZcUQrwLEZeNhF2XJV4KwB Tlg7HCWO/sy1foE5noaMyACjAtAQE9p5kGYaj+DuRhPdWUTsHNuqrhikzIZd2rrcMid+ktb0 NvtvswzMO059z1YGMtGSqQ4srCArju+XHIdTFdiIYbd7+jeehg== In-Reply-To: <86zfnocpb8.fsf@cthulhu.stephaner.labo.int> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.86 X-Spamd-Result: default: False [-3.39 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.999]; R_SPF_ALLOW(-0.20)[+ip6:2607:f3e0::/32]; MIME_GOOD(-0.10)[text/plain]; RCVD_IN_DNSWL_LOW(-0.10)[199.212.134.19:received]; XM_UA_NO_VERSION(0.01)[]; ASN(0.00)[asn:11647, ipnet:2607:f3e0::/32, country:CA]; FREEFALL_USER(0.00)[mike]; RCPT_COUNT_ONE(0.00)[1]; MIME_TRACE(0.00)[0:+]; MID_RHS_MATCH_FROM(0.00)[]; MLMMJ_DEST(0.00)[freebsd-hardware@freebsd.org]; ARC_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; R_DKIM_NA(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_DN_ALL(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DMARC_NA(0.00)[sentex.net]; RCVD_TLS_ALL(0.00)[] X-Rspamd-Queue-Id: 4XJ85G6P5Vz4hq0 X-Spamd-Bar: --- On 10/1/2024 2:07 AM, Stephane Rochoy wrote: > > mike tancsa writes: > >> WARNING: This e-mail comes from someone outside your organisation. Do >> not click >> on links or open attachments if you do not know the sender and are >> not sure that >> the content is safe. >> >> On 9/30/2024 3:18 AM, Stephane Rochoy wrote: >>> >>> mike tancsa writes: >>> >>>> Do you know off hand how to set the system to just reboot ? The ddb >>>> man >>>> page seems to imply I need options DDB as well, which is not in >>>> GENERIC >>>> in order to set script actions. >>> >>> I would try the following: >>> >>>  ddb script kdb.enter.default=reset >>> >> If I build a custom kernel then that will work. But with GENERIC (I am >> tracking project via freebsd-update), it fails >> >> # ddb script kdb.enter.default=reset >> ddb: sysctl: debug.ddb.scripting.scripts: No such file or directory >> >> With a customer kernel, adding >> >> options DDB >> >> it works perfectly. >> >> Is there any way to get this to work without having ddb custom >> compiled in ? > > I don't understand what's happening here. AFAIK, the code > corresponding to the soft watchdog being triggered is the > following: > >  static void >  wd_timeout_cb(void *arg) >  { >    const char *type = arg; > >  #ifdef DDB >    if ((wd_pretimeout_act & WD_SOFT_DDB)) { >      char kdb_why[80]; >      snprintf(kdb_why, sizeof(kdb_why), "watchdog %s-timeout",      > type); >      kdb_backtrace(); >      kdb_enter(KDB_WHY_WATCHDOG, kdb_why); >    } >  #endif >    if ((wd_pretimeout_act & WD_SOFT_LOG)) >      log(LOG_EMERG, "watchdog %s-timeout, WD_SOFT_LOG\n", type); >    if ((wd_pretimeout_act & WD_SOFT_PRINTF)) >      printf("watchdog %s-timeout, WD_SOFT_PRINTF\n", type); >    if ((wd_pretimeout_act & WD_SOFT_PANIC)) >      panic("watchdog %s-timeout, WD_SOFT_PANIC set", type); >  } > > So without DDB, it should call panic. But in your case, it > called kdb_backtrace. So initial hypothesis was wrong. What I > missed is that panic was natively able to kdb_backtrace if gently > asked to do so: > >  #ifdef KDB >    if ((newpanic || trace_all_panics) && trace_on_panic) >      kdb_backtrace(); >    if (debugger_on_panic) >      kdb_enter(KDB_WHY_PANIC, "panic"); >    else if (!newpanic && debugger_on_recursive_panic) >      kdb_enter(KDB_WHY_PANIC, "re-panic"); >  #endif >    /*thread_lock(td); */ >    td->td_flags |= TDF_INPANIC; >    /* thread_unlock(td); */ >    if (!sync_on_panic) >      bootopt |= RB_NOSYNC; >    if (poweroff_on_panic) >      bootopt |= RB_POWEROFF; >    if (powercycle_on_panic) >      bootopt |= RB_POWERCYCLE; >    kern_reboot(bootopt); > > So it definitely should reboot but as it don't, maybe playing with > kern.powercycle_on_panic would help? > > Thank you for your continued help on this. Still no luck with the GENERIC kernel 0{p9999}# sysctl -w kern.powercycle_on_panic=1 kern.powercycle_on_panic: 0 -> 1 0{p9999}# ps -auxwww | grep dog root     4752   0.0  0.2   12820  12916  -  S