upon upgrade to v5, FTL keeps crashing every few hours (0x74617300 with code: SEGV_MAPERR) #804
Comments
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Thank you for your submission and we're sorry you're seeing this. With Pi-hole v5.0, we decided to embed the top recent release of Can you attach the debugger to your Pi-hole and post the results? Everything is well described in our docs: https://docs.pi-hole.net/ftldns/debugging/ Only with this further information we'll be able to fix this bug. If you need any assistance or have any more questions, feel free to ask! |
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@yik77 In case you cannot attach the debugger, please run Even when this does not fix the issue, it should give us more details in the log file just before a crash happens. The |
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2020-06-15 15:21:30.416 15873] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DO not know if this helps . Let me know if you need the full file |
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@fradev A few lines before the crash will be interesting. Otherwise, please try as we fixed a few small bugs in FTL and it would be great if our fixes already covers the crash you saw. |
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here we go [2020-06-15 15:21:29.432 18198] DEBUG really_insert: cache_get_name(new) = 0xffff8509e628 'api-global.eu-west-1.prodaa.netflix.com' @DL6ER dev build installed. On my platform happens randomly once a week. I will report back if any crash |
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Hi there here we go again [2020-06-18 09:15:46.973 14287] Resizing "/FTL-dns-cache" from 286720 to 290816 let me know if I can provide more info (seems consistent on my VM) |
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Done.. will report in any case (currently the crash timespan is 2 days) |
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I'm not sure if it's the same bug, I'm running on a pi zero wh. Pihole crashed the 2nd time after running for 3 days, not sure how long it was up and running after the upgrade. |
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I have 2 more SEGFAULT crashes on new installation, in the meantime, my constant rebooting and hard power offs had destroyed my 1 year old SD card, so I had to buy new and reinstall it all. Crashes are on clean install of raspbian, on pi zero w, with pihole as the only application running. (on top of ssh deamons and default minimal debian) [2020-06-23 20:34:21.946 20300] Note: FTL forked to handle TCP requests and again, [2020-06-24 15:46:17.300 29385] Note: FTL forked to handle TCP requests |
did the fix solved your problem? |
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@yik77 you are not using the fixed version
Please run to get the fix |
Done. I just now did run pihole checkout ftl development. |
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I just ran into this issue too, have two piholes, both set up in the same way, and getting the same Installed the fix_buf_overflow FTL just now on one of them, we'll see if it helps. Log says vDev-3c0553e, is it proof of the beta binary used ? |
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@frollic Please run The other branch is already outdated. |
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Done! |
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after several days with FTL Version vDev (fix/fhriley-fix_buf_overflow, vDev-3c0553e) no crashes |
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With vDev (development, vDev-3cf1889) mine crashed again after ~4days, on the 27th, didn't notice until today. |
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@frollic Can you give some details from |
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Whole log attached, all the way back to before the v5 upgrade. Not that many entries in it, since it's the secondary DNS server. |
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FYI after 7 days on vDev-bd405e9 there are no crashes. I am getting cautiously optimistic. |
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@frollic Please see #816 (comment) |
In raising this issue, I confirm the following (please check boxes, eg [X]) Failure to fill the template will close your issue:
How familiar are you with the codebase?:
{1}
[BUG | ISSUE] Expected Behaviour:
pihole running uninterrupted for hours, days, weeks...
[BUG | ISSUE] Actual Behaviour:
pihole keeps crashing every few hours, checking of pihole-FTL.log shows Segmentation fault at address: 0x74617300 with code: SEGV_MAPERR (Address not mapped to object) and asked me to report it.
[BUG | ISSUE] Steps to reproduce:
Installed on fully updated raspbian buster on r pi zero w. Upgraded to v5. started. crashed.
seg fault at 0x74617300 with code: SEGV_MAPERR.
command pihole restartdns makes it work again, for few hours.
Log file output [if available]
[2020-06-05 19:17:57.787 15838] Compiled 0 whitelist and 0 blacklist regex filters in 286.6 msec
[2020-06-05 19:22:33.936 15838] Resizing "/FTL-dns-cache" from 4096 to 8192
[2020-06-05 19:22:49.402 15838] Resizing "/FTL-queries" from 2523136 to 2752512
[2020-06-05 19:22:56.688 15838] Resizing "/FTL-strings" from 69632 to 73728
[2020-06-05 19:43:02.638 15838] Resizing "/FTL-dns-cache" from 8192 to 12288
[2020-06-05 19:55:38.040 15838] Resizing "/FTL-dns-cache" from 12288 to 16384
[2020-06-05 19:55:40.155 15838] Resizing "/FTL-strings" from 73728 to 77824
[2020-06-05 19:58:20.665 15838] Resizing "/FTL-dns-cache" from 16384 to 20480
[2020-06-05 20:00:36.376 15838] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[2020-06-05 20:00:36.376 15838] ----------------------------> FTL crashed! <----------------------------
[2020-06-05 20:00:36.377 15838] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[2020-06-05 20:00:36.377 15838] Please report a bug at https://github.com/pi-hole/FTL/issues
[2020-06-05 20:00:36.377 15838] and include in your report already the following details:
[2020-06-05 20:00:36.377 15838] FTL has been running for 2566 seconds
[2020-06-05 20:00:36.378 15838] FTL branch: master
[2020-06-05 20:00:36.378 15838] FTL version: v5.0
[2020-06-05 20:00:36.378 15838] FTL commit: 3d7c095
[2020-06-05 20:00:36.378 15838] FTL date: 2020-05-10 18:58:38 +0100
[2020-06-05 20:00:36.379 15838] FTL user: started as pihole, ended as pihole
[2020-06-05 20:00:36.379 15838] Compiled for arm (compiled on CI) using arm-linux-gnueabihf-gcc (crosstool-NG crosstool-ng-1.22.0-88-g8460611) 4.9.3
[2020-06-05 20:00:36.379 15838] Received signal: Segmentation fault
[2020-06-05 20:00:36.380 15838] at address: 0x74617300
[2020-06-05 20:00:36.380 15838] with code: SEGV_MAPERR (Address not mapped to object)
[2020-06-05 20:00:36.380 15838] Backtrace:
[2020-06-05 20:00:36.382 15838] B[0000]: 0x46d704, /usr/bin/pihole-FTL(+0x2c704) [0x46d704]
[2020-06-05 20:00:36.382 15838] B[0001]: 0xb6e22130, /lib/arm-linux-gnueabihf/libc.so.6(__default_rt_sa_restorer+0) [0xb6e22130]
[2020-06-05 20:00:36.382 15838] B[0002]: 0x4a81b4, /usr/bin/pihole-FTL(iface_check+0x50) [0x4a81b4]
[2020-06-05 20:00:36.383 15838] B[0003]: 0x48d4e0, /usr/bin/pihole-FTL(receive_query+0x268) [0x48d4e0]
[2020-06-05 20:00:36.383 15838] B[0004]: 0x4a3d68, /usr/bin/pihole-FTL(+0x62d68) [0x4a3d68]
[2020-06-05 20:00:36.383 15838] B[0005]: 0x4a5cfc, /usr/bin/pihole-FTL(main_dnsmasq+0x1238) [0x4a5cfc]
[2020-06-05 20:00:36.383 15838] B[0006]: 0x45fd04, /usr/bin/pihole-FTL(main+0xfc) [0x45fd04]
[2020-06-05 20:00:36.384 15838] B[0007]: 0xb6e0c718, /lib/arm-linux-gnueabihf/libc.so.6(__libc_start_main+0x10c) [0xb6e0c718]
[2020-06-05 20:00:36.384 15838] ------ Listing content of directory /dev/shm ------
[2020-06-05 20:00:36.384 15838] File Mode User:Group Filesize Filename
[2020-06-05 20:00:36.385 15838] rwxrwxrwx root:root 260 .
[2020-06-05 20:00:36.385 15838] rwxr-xr-x root:root 4K ..
[2020-06-05 20:00:36.386 15838] rw------- pihole:pihole 4K FTL-per-client-regex
[2020-06-05 20:00:36.387 15838] rw------- pihole:pihole 20K FTL-dns-cache
[2020-06-05 20:00:36.388 15838] rw------- pihole:pihole 29K FTL-overTime
[2020-06-05 20:00:36.389 15838] rw------- pihole:pihole 3M FTL-queries
[2020-06-05 20:00:36.389 15838] rw------- pihole:pihole 20K FTL-upstreams
[2020-06-05 20:00:36.390 15838] rw------- pihole:pihole 643K FTL-clients
[2020-06-05 20:00:36.391 15838] rw------- pihole:pihole 66K FTL-domains
[2020-06-05 20:00:36.391 15838] rw------- pihole:pihole 78K FTL-strings
[2020-06-05 20:00:36.392 15838] rw------- pihole:pihole 12 FTL-settings
[2020-06-05 20:00:36.393 15838] rw------- pihole:pihole 124 FTL-counters
[2020-06-05 20:00:36.393 15838] rw------- pihole:pihole 28 FTL-lock
[2020-06-05 20:00:36.394 15838] ---------------------------------------------------
[2020-06-05 20:00:36.394 15838] Thank you for helping us to improve our FTL engine!
[2020-06-05 20:00:36.394 15838] FTL terminated!
Device specifics
Hardware Type: rPi zero w
OS: raspbian buster fully updated
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