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<meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><blockquote type="cite" class=""><blockquote type="cite" class="">1) I guess you're using DNSSEC, if that correct?<br class=""></blockquote></blockquote><div class=""><br class=""></div>Yes,</div><div class=""><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">2) How difficult is that to reproduce?<br class=""></blockquote></blockquote><div class=""><br class=""></div>It happened twice in the last week. One interesting thing stood out: all three were to the <a href="http://admanmedia.com" class="">admanmedia.com</a> domain. The messages from one look like this:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 13px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Jan 4 11:20:03 john <a href="http://daemon.info" class="">daemon.info</a> dnsmasq[1078]: query[A] <a href="http://cs.admanmedia.com" class="">cs.admanmedia.com</a> from 192.168.1.76</span></div><div style="margin: 0px; font-stretch: normal; font-size: 13px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Jan 4 11:20:03 john <a href="http://daemon.info" class="">daemon.info</a> dnsmasq[1078]: forwarded <a href="http://cs.admanmedia.com" class="">cs.admanmedia.com</a> to 8.8.8.8</span></div><div style="margin: 0px; font-stretch: normal; font-size: 13px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Jan 4 11:20:03 john <a href="http://daemon.info" class="">daemon.info</a> dnsmasq[1078]: dnssec-query[DS] <a href="http://admanmedia.com" class="">admanmedia.com</a> to 8.8.8.8</span></div><div style="margin: 0px; font-stretch: normal; font-size: 13px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Jan 4 11:20:03 john <a href="http://daemon.info" class="">daemon.info</a> dnsmasq[1078]: query[A] <a href="http://cs.admanmedia.com" class="">cs.admanmedia.com</a> from 192.168.1.76</span></div></div><div class=""><br class=""></div><div class=""><span style="font-family: Menlo; font-size: 13px;" class=""><br class=""></span></div><div class=""><span style="font-size: 13px;" class="">Unfortunately, just doing a two digs to the domain does not reproduce the problem. I wondered if it was something having to do with the second request coming too soon and modified dig to send two requests and that didn't help.</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><br class=""></span></div><div class=""><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">3) Could you set --log-queries, maybe with --log-facility set to a file,<br class="">if that's easier, and send me the log leading up to a lockup?<br class=""></blockquote></blockquote><br class=""></div><div class="">I've built with debugging symbols and installed entware gdb, but it doesn't seem to be reporting a sensible stack. So I may not get anything useful from gdb when it hangs. However, I did use the flash drive hosting gdb for the dnsmasq log and capture files. If I haven't affected the timing too badly, I should at least get those for you. I'll let you know.</div><div class=""><br class=""></div><div class="">John Byrne</div><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jan 9, 2022, at 2:48 PM, Simon Kelley <<a href="mailto:simon@thekelleys.org.uk" class="">simon@thekelleys.org.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">On 09/01/2022 22:27, Simon Kelley wrote:</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">On 09/01/2022 10:09, Andreas Metzler wrote:<br class=""><blockquote type="cite" class="">On 2022-01-06 Andreas Metzler <<a href="mailto:ametzler@bebt.de" class="">ametzler@bebt.de</a>> wrote:<br class=""><blockquote type="cite" class="">On 2022-01-05 Simon Kelley wrote:<br class=""><blockquote type="cite" class="">On 04/01/2022 17:11, Andreas Metzler wrote:<br class=""></blockquote>[...]<br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">FWIW this looks similar to <a href="https://bugs.debian.org/1001576" class="">https://bugs.debian.org/1001576</a> which<br class=""></blockquote></blockquote></blockquote>[...]<br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">Are you running with the --strict-order config? The backtrace looks, at<br class="">least superficially, like the bug fixed in<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class=""><a href="https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=2561f9fe0eb9c0be1df48da1e2bd3d3feaa138c2" class="">https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=2561f9fe0eb9c0be1df48da1e2bd3d3feaa138c2</a><br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class=""><blockquote type="cite" class="">Whilst John is not setting --strict order, so that doesn't seem to to be<br class="">relevant in his case.<br class=""></blockquote></blockquote><br class=""><blockquote type="cite" class="">Hello Simon,<br class=""></blockquote><br class=""><blockquote type="cite" class="">I have not set strict-order. However I have now rebuilt the Debian<br class="">package with the abovementioned patch. Let's see whether the problem<br class="">goes away.<br class=""></blockquote><br class="">Sadly the patch did not fix the issue.<br class=""></blockquote><br class="">OK.<br class=""><br class="">A few questions, if that's OK.<br class=""><br class="">1) I guess you're using DNSSEC, if that correct?<br class="">2) How difficult is that to reproduce?<br class="">3) Could you set --log-queries, maybe with --log-facility set to a file,<br class="">if that's easier, and send me the log leading up to a lockup?<br class=""><br class=""><br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">.. and further, if possible, configure --dumpfile and --dumpmask=0x00ff</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">and send me the packet dump too.</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br class="">Cheers,<br class=""><br class="">Simon.<br class=""><br class=""><blockquote type="cite" class=""><br class="">cu Andreas<br class=""><br class="">_______________________________________________<br class="">Dnsmasq-discuss mailing list<br class=""><a href="mailto:Dnsmasq-discuss@lists.thekelleys.org.uk" class="">Dnsmasq-discuss@lists.thekelleys.org.uk</a><br class="">https://lists.thekelleys.org.uk/cgi-bin/mailman/listinfo/dnsmasq-discuss<br class=""><br class=""></blockquote><br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; 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