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libalignalgorithm.so SIGSEGV in triangulation — missing null check

Service
cupixworks-captue-skatmaster-arm-instance
Occurrences
2
Status
Reported
Confidence
80%
Actionability
52%
Cluster ID
45d9058f-4f8e-47e3-a9ed-4ee8a6f92e17
First Seen
2026-04-27 00:55 UTC
Last Seen
2026-04-27 00:55 UTC
Actions

libalignalgorithm.so SIGSEGV in triangulation — missing null check

What Happened#

2026-04-27 00:55:53 UTC에 cupixworks-captue-skatmaster-arm-instance 서비스의 ap-southeast-2 리전에서 skatmaster native 프로세스가 SIGSEGV (segmentation fault) 로 크래시하여 SkatmasterService::runService | error가 발생했다. capture 69410 / job 181610 처리 중 Insta360 X5 카메라(firmware v1.10.11_build1)의 영상을 VISLAM triangulation 단계에서 처리하던 중 native C++ 라이브러리(libalignalgorithm.so)가 메모리 접근 위반으로 비정상 종료되었다.

Quick Facts#

Field Value
exception.class SIGSEGV (signal 11)
exception.message exitWithDefaultSignalHandler:226. Exiting due to FATAL_SIGNAL, 11
top_frame libalignalgorithm.so : cupix::align_algorithm::inertial::ComputeVISLAM::triangulatePair(...)
env production, ap-southeast-2

Affected Teams#

Team / Domain Error Count Impact
naylorlove (team_id: 22) 1 capture 69410 / job 181610 처리 실패, 사용자 david.vanwyk@naylorlove.co.nz의 스캔 결과 미생성

Timeline#

  1. 00:11:36ZSkatmasterService::InitServicerunService 시작
  2. 00:11:39Z — 입력 데이터 로드 완료 (video: VID_20260423_105655_00_003.insv, Insta360 X5, 0 panos, 1 video, 0 frames)
  3. 00:11:39Z — firmware 미지원 경고 6회 발생 (Unsupported firmware version detected! - Camera: Insta360 X5, version: v1.10.11_build1)
  4. 00:15:34ZSliding offsets are not monotonic 경고
  5. 00:22:44Zscenes are splitted! - num scenes: 3 — 영상이 3개 scene으로 분할
  6. 00:22:45ZaccBias jumped!, Initialization failed (9 - 24) - BA failed — Bundle Adjustment 초기화 실패
  7. 00:55:39ZSIGSEGV(11) 발생 — native 프로세스 크래시
  8. 00:55:53ZSkatmasterService::forceShutdown, error 로그 기록, ECI 파일 저장

Scoring#

Confidence 80% · Actionability 52%

Confidence#

Dimension Score Detail
Evidence completeness 5/5 16 code refs, 4 log queries
Code path explicitness 3/3 16 file:line refs
Log evidence 2/3 section, query
RCA structure 3/3 3/3 sections
Revision history 0/3 0 revision(s)
Agent execution 3/3 success

Actionability#

Dimension Score Detail
Fix complexity 5/5 trivial
Affected files 1/5 11 file(s)
Single repo 1/3 6 service(s)
Immediate actions 0/3 absent
Testability 0/3 no test info
External dependency 3/3 no external deps
Data migration 3/3 no migration