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Nix Package Manager development

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9 Oct 2025
@lovesegfault:matrix.orglovesegfaulti suspect the corpus sucks and needs to be made better23:55:07
10 Oct 2025
@fzakaria:one.ems.hostfzakariamaybe there's more instrumentation to help guide it better?00:02:48
@fzakaria:one.ems.hostfzakariaor yea just feed it tons of derivations00:02:59
@fzakaria:one.ems.hostfzakarialike 1000s00:03:02
@fzakaria:one.ems.hostfzakaria 
nix eval -f ./id:000000,sig:11,src:000046,time:6573454,execs:92972154,op:havoc,rep:2 
error: memory exhausted
       at /home/fmzakari/Downloads/nix-eval-crashes/id:000000,sig:11,src:000046,time:6573454,execs:92972154,op:havoc,rep:2:1:9999:
00:03:04
@fzakaria:one.ems.hostfzakaria memory exhausted interesting since it's a bunch of exclamation marks 00:03:31
@fzakaria:one.ems.hostfzakariaRedacted or Malformed Event00:07:49
@fzakaria:one.ems.hostfzakariaon recent versions that was fixed... I think your test harness might be too broad in what it's caatching00:10:25
@fzakaria:one.ems.hostfzakaria 
/nix/store/9d3ypgdl7h4i7xr4ld7bl745f7fwkz66-nix-2.32.0pre20251006_dirty/bin/nix eval -f id:000000,sig:11,src:000064,time:13566614,execs:193156749,op:havoc,rep:2
error:
       … while evaluating the file '/home/fmzakari/Downloads/nix-eval-crashes/id:000000,sig:11,src:000064,time:13566614,execs:193156749,op:havoc,rep:2':

       … in the argument of the not operator
         at /home/fmzakari/Downloads/nix-eval-crashes/id:000000,sig:11,src:000064,time:13566614,execs:193156749,op:havoc,rep:2:1:5287:
00:10:38
@fzakaria:one.ems.hostfzakaria That seems like an acceptable error in eval 00:10:58
@lovesegfault:matrix.orglovesegfaulthmmm00:21:29
@lovesegfault:matrix.orglovesegfaultmaybe the harness is borked somehow?00:21:36
@fzakaria:one.ems.hostfzakariaI think i remember reviewing and you are catching Error or std::exception00:21:50
@fzakaria:one.ems.hostfzakariamaybe those are normal ? I thought fuzzing is only looking for things that cause SIGSEGV00:22:39
@fzakaria:one.ems.hostfzakaria unless you set AFL_CRASH_EXITCODE='-1' 00:23:23
@fzakaria:one.ems.hostfzakaria(or something)00:23:27

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