Newest Transmission update (kinda) breaks the web interface

[mehdi]

@nebulon I understand, this makes sense.

Any other step I can take to help you debug the underlying problem with the new version ?

[afonsosantos]

Also can confirm that the latest version came with some errors regarding Segmentation Fault.
Had to downgrade to 1.1.0, as per user @mehdi stated.

Can we try to check the codebase for a possible bug or is it upstream?

Thanks.

[girish]

@mehdi @afonsosantos I can reproduce the crash.

I see this in dmesg:

[3361628.916001] transmission-da[4033116]: segfault at 0 ip 00007efe407dec25 sp 00007efe3f1fb0c0 error 4 in libcrypto.so.3[7efe406fe000+25d000]
[3361628.916020] Code: 00 00 00 00 90 f3 0f 1e fa 41 54 41 89 f4 55 48 89 fd 48 81 ec a8 00 00 00 64 48 8b 04 25 28 00 00 00 48 89 84 24 98 00 00 00 <48> 8b 07 48 83 78 78 00 0f 84 cd 00 00 00 66 0f ef c0 48 63 c6 48

[girish]

OK, so https://github.com/transmission/transmission/discussions/4370 is the upstream bug report. Looks like they recommend using the 4.0 beta instead.

I will revoke this release.

[girish]

It seems even the previous transmission dies with OOM. Looks like maybe something to do with host Ubuntu 22.04. Trying with more memory.

[3363319.142157] Tasks state (memory values in pages):
[3363319.142157] [  pid  ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
[3363319.142161] [4038273]     0 4038273     1727      376    49152       69             0 start.sh
[3363319.142164] [4038361]  1000 4038361  1163255    23042  2031616    40128             0 transmission-da
[3363319.142165] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=ee5a55896c95564143037faea0b7971e7ce557cd2057bf30bc946570b7ed97e4,mems_allowed=0,oom_memcg=/docker/ee5a55896c95564143037faea0b7971e7ce557cd2057bf30bc946570b7ed97e4,task_memcg=/docker/ee5a55896c95564143037faea0b7971e7ce557cd2057bf30bc946570b7ed97e4,task=transmission-da,pid=4038361,uid=1000
[3363319.142198] Memory cgroup out of memory: Killed process 4038361 (transmission-da) total-vm:4653020kB, anon-rss:90380kB, file-rss:1788kB, shmem-rss:0kB, UID:1000 pgtables:1984kB oom_score_adj:0

[girish]

Apparently, there is a memory leak:

https://bugs.launchpad.net/ubuntu/+source/transmission/+bug/1973084

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1015003

[girish]

Looks like transmission 4.0 is out.

[girish]

Unfortunately, the memory issue still persists.

[girish]

I have left a comment at https://github.com/transmission/transmission/issues/4786 .

[girish]

I pushed out a new package with 4.0.1. Had to bump up the memory limit to 1GB to make things work a bit more reliably.