DL6ER
March 23, 2020, 8:37pm
8
The crash happens here:
while (forward->blocking_query)
forward = forward->blocking_query;
blockdata_retrieve(forward->stash, forward->stash_len, (void *)header);
plen = forward->stash_len;
forward->flags |= FREC_TEST_PKTSZ;
if (find_pseudoheader(header, plen, NULL, &pheader, &is_sign, NULL) && !is_sign)
PUTSHORT(SAFE_PKTSZ, pheader);
if (forward->sentto->addr.sa.sa_family == AF_INET)
log_query(F_NOEXTRA | F_DNSSEC | F_IPV4, "retry", (struct all_addr *)&forward->sentto->addr.in.sin_addr, "dnssec");
#ifdef HAVE_IPV6
else
log_query(F_NOEXTRA | F_DNSSEC | F_IPV6, "retry", (struct all_addr *)&forward->sentto->addr.in6.sin6_addr, "dnssec");
#endif
if (forward->sentto->sfd)
fd = forward->sentto->sfd->fd;
else
{
This is an issue we have recently seen with Cloudflare servers, however, it seems to have gotten resolved by now. Our fix is contained in a branch for Pi-hole v5.0, porting it back to v4.3.1 would be a very extensive task not really justified by the coming v5.0 release. If you would like to, you could try the v5.0 beta with the update/dnsmasq branch (see last comment) in the Github issue ticket:
opened 11:45PM - 03 Mar 20 UTC
closed 07:16PM - 02 Apr 20 UTC
Bug
Bugfix in progress
**In raising this issue, I confirm the following (please check boxes, eg [X]) Fa… ilure to fill the template will close your issue:**
- [X] I have read and understood the [contributors guide](https://github.com/pi-hole/pi-hole/blob/master/CONTRIBUTING.md).
- [X] The issue I am reporting can be *replicated*
- [X] The issue I am reporting isn't a duplicate
**How familiar are you with the codebase?:**
1
---
**[BUG | ISSUE] Expected Behaviour:**
**[BUG | ISSUE] Actual Behaviour:**
pi-hole on my 2 completly different systems crashed @ nearly the same time.
**[BUG | ISSUE] Steps to reproduce:**
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**Log file output [if available]**
RPi4 Log:
```c
[2020-03-04 00:18:39.277 4096] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[2020-03-04 00:18:39.277 4096] ----------------------------> FTL crashed! <----------------------------
[2020-03-04 00:18:39.277 4096] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[2020-03-04 00:18:39.277 4096] Please report a bug at https://github.com/pi-hole/FTL/issues
[2020-03-04 00:18:39.278 4096] and include in your report already the following details:
[2020-03-04 00:18:39.278 4096] FTL has been running for 106087 seconds
[2020-03-04 00:18:39.278 4096] FTL branch: master
[2020-03-04 00:18:39.278 4096] FTL version: v4.3.1
[2020-03-04 00:18:39.278 4096] FTL commit: b60d63f
[2020-03-04 00:18:39.278 4096] FTL date: 2019-05-25 21:37:26 +0200
[2020-03-04 00:18:39.278 4096] FTL user: started as pihole, ended as pihole
[2020-03-04 00:18:39.278 4096] Received signal: Segmentation fault
[2020-03-04 00:18:39.278 4096] at address: 0
[2020-03-04 00:18:39.278 4096] with code: SEGV_MAPERR (Address not mapped to object)
[2020-03-04 00:18:39.279 4096] Backtrace:
[2020-03-04 00:18:39.279 4096] B[0000]: /usr/bin/pihole-FTL(+0x1a25c) [0x47125c]
[2020-03-04 00:18:39.279 4096] B[0001]: /lib/arm-linux-gnueabihf/libc.so.6(__default_rt_sa_restorer+0) [0xb6d4c130]
[2020-03-04 00:18:39.279 4096] B[0002]: /usr/bin/pihole-FTL(+0x32798) [0x489798]
[2020-03-04 00:18:39.279 4096] B[0003]: /usr/bin/pihole-FTL(receive_query+0x5d1) [0x48a4ce]
[2020-03-04 00:18:39.279 4096] B[0004]: /usr/bin/pihole-FTL(+0x40ed6) [0x497ed6]
[2020-03-04 00:18:39.279 4096] B[0005]: /usr/bin/pihole-FTL(main_dnsmasq+0xa3f) [0x49913c]
[2020-03-04 00:18:39.279 4096] B[0006]: /usr/bin/pihole-FTL(main+0x87) [0x46fe18]
[2020-03-04 00:18:39.279 4096] B[0007]: /lib/arm-linux-gnueabihf/libc.so.6(__libc_start_main+0x10c) [0xb6d36718]
[2020-03-04 00:18:39.279 4096] Thank you for helping us to improve our FTL engine!
[2020-03-04 00:18:39.279 4096] FTL terminated!`
```
PC Log:
```c
[2020-03-04 00:29:13.585 22510] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[2020-03-04 00:29:13.585 22510] ----------------------------> FTL crashed! <----------------------------
[2020-03-04 00:29:13.585 22510] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[2020-03-04 00:29:13.585 22510] Please report a bug at https://github.com/pi-hole/FTL/issues
[2020-03-04 00:29:13.585 22510] and include in your report already the following details:
[2020-03-04 00:29:13.585 22510] FTL has been running for 104188 seconds
[2020-03-04 00:29:13.585 22510] FTL branch: master
[2020-03-04 00:29:13.585 22510] FTL version: v4.3.1
[2020-03-04 00:29:13.585 22510] FTL commit: b60d63f
[2020-03-04 00:29:13.585 22510] FTL date: 2019-05-25 21:37:26 +0200
[2020-03-04 00:29:13.585 22510] FTL user: started as pihole, ended as pihole
[2020-03-04 00:29:13.585 22510] Received signal: Segmentation fault
[2020-03-04 00:29:13.585 22510] at address: 0
[2020-03-04 00:29:13.585 22510] with code: SEGV_MAPERR (Address not mapped to object)
[2020-03-04 00:29:13.586 22510] Backtrace:
[2020-03-04 00:29:13.586 22510] B[0000]: /usr/bin/pihole-FTL(+0x255e5) [0x55d1fce755e5]
[2020-03-04 00:29:13.586 22510] B[0001]: /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890) [0x7fd2fa55c890]
[2020-03-04 00:29:13.586 22510] B[0002]: /usr/bin/pihole-FTL(+0x47a9a) [0x55d1fce97a9a]
[2020-03-04 00:29:13.586 22510] B[0003]: /usr/bin/pihole-FTL(receive_query+0x905) [0x55d1fce98e05]
[2020-03-04 00:29:13.586 22510] B[0004]: /usr/bin/pihole-FTL(+0x5db5b) [0x55d1fceadb5b]
[2020-03-04 00:29:13.586 22510] B[0005]: /usr/bin/pihole-FTL(main_dnsmasq+0xfdc) [0x55d1fceaf67c]
[2020-03-04 00:29:13.586 22510] B[0006]: /usr/bin/pihole-FTL(main+0xbc) [0x55d1fce73acc]
[2020-03-04 00:29:13.586 22510] B[0007]: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7fd2fa17ab97]
[2020-03-04 00:29:13.586 22510] B[0008]: /usr/bin/pihole-FTL(_start+0x2a) [0x55d1fce73bfa]
[2020-03-04 00:29:13.586 22510] Thank you for helping us to improve our FTL engine!
[2020-03-04 00:29:13.586 22510] FTL terminated!`
```
**Device specifics**
Hardware Type: RPi4 4GB and a PC
OS: newest Raspbian on RPi4 and Ubuntu Server on PC
_This template was created based on the work of [`udemy-dl`](https://github.com/nishad/udemy-dl/blob/master/LICENSE)._