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docs: the in-mission freeze ends in 1171 refused resumes of one thread

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A Stage 02 run froze at TIME 01:02 with a radio line caught mid-word. The
emulator was alive at ~200% CPU with its main thread in state R, two screenshots
six seconds apart were byte-identical, and the log ended in a spin: 1171 of the
run's 1200 "host resume was refused" lines are the single pair F80002AC ->
F8000240, starting at the line immediately after F80002AC is created, and the log
never grows again. The commit that added that warning records what normal looks
like - about 7 in a whole boot - so this is a 150x anomaly on one pair rather
than noise. F8000240 itself appears exactly once outside the spin, at creation,
and calls nothing.

Eleven of the frozen process's 79 host threads have zero CPU, four of them
consecutive late-created guest threads - the same signature as the lost resume
that c1b57f93b fixed for the title screen. That fix IS in this build, so either
there is a second window in that race or this only looks alike.

The inference is named as one: nothing here maps a guest handle to a host tid, so
"the zero-CPU threads are the ones being resumed" is a reading of two consistent
observations. And the refusals could equally be the game's reaction to a worker
stuck for another reason - log_mask=13 has the Kernel channel disabled, so not
one of F8000240's waits is visible. The next experiment is written down
concretely: reproduce with LOG_MASK=12 LOG_LEVEL=3 and map the handle to a tid.

Also caps ob_hunt's survivor listing at 40 - an aborted run printed all 21482 and
buried the line that mattered.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PMRJjbxLqZtsb5Vb7KunPE
This commit is contained in:
Sylpheed RE agent
2026-08-23 19:36:03 +00:00
parent 4e3e3e9446
commit 1e6c022216
5 changed files with 219 additions and 2 deletions
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25
docs/re/captures/stage02-freeze-resume-spin.log Normal file
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# tail of the Canary log of a FROZEN Stage 02 run (log_mask=13, level=2)
# 1200 'host resume was refused' lines total, 1171 of them the single pair
# F80002AC -> F8000240; the spin begins at line 5384, immediately after
# XThreadF80002AC is created, and the log then never grows again.
F> F8000090 HostPathDevice::ResolvePath(\c7951e39\f\060a28b)
F> F8000008 HostPathDevice::ResolvePath(\69d8e45c\a\8619aa7)
i> F8000008 XThreadF8000270 (38) Stack: 70880000-708C0000
i> F8000008 XThreadF8000298 (39) Stack: 70AD0000-70B10000
i> F8000008 XThreadF80002AC (3A) Stack: 70B30000-70B70000
i> F8000008 XThreadF80002C0 (3B) Stack: 70B90000-70C10000
F> F80002C0 HostPathDevice::ResolvePath(\e5f89243\8\1f28c4d)
F> F80002C0 HostPathDevice::ResolvePath(\e5f89243\2\bb9feee)
F> F80002C0 HostPathDevice::ResolvePath(\e5f89243\b\2c0b0e1)
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
... [1171 identical lines] ...
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
w> F80002AC XThread::Resume: host resume was refused for thread F8000240
w> F80002AC XThread::Resume: host resume was refused for thread F8000240

81
docs/re/captures/stage02-freeze-thread-cpu.txt Normal file
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# host threads of the FROZEN emulator: ticks(utime+stime), state, tid, comm
# 79 threads, 11 with zero CPU
0 S 42923 xenia_canary
0 S 42950 xenia_c:disk$0
0 S 42955 Audio Media Pla
0 S 42967 Kernel Dispatch
0 S 42978 Shader Storage
0 S 42979 XThreadB73FC6C0
0 S 42980 XThreadB53F96C0
0 S 45871 XThread37FFF6C0
0 S 45872 XThread36FFE6C0
0 S 45873 XThread35FFD6C0
0 S 45874 XThread2FFFF6C0
1 S 42922 xenia_canary
1 S 42996 XThread76FFE6C0
5 S 42957 WSI swapchain e
6 S 42981 XThreadA3FFF6C0
10 S 42924 Emulator
14 S 42965 Vulkan Pipeline
15 S 42958 Vulkan Pipeline
15 S 42960 Vulkan Pipeline
16 S 42959 Vulkan Pipeline
16 S 42962 Vulkan Pipeline
16 S 42966 Vulkan Pipeline
17 S 42961 Vulkan Pipeline
17 S 42963 Vulkan Pipeline
17 S 42964 Vulkan Pipeline
45 S 45808 XThread41FFD6C0
56 S 42905 xenia_canary
60 S 42984 XThread9FFFA6C0
61 S 45807 XThread42FFE6C0
98 S 42952 GPU Frame limit
105 S 45875 XThread2EFFE6C0
158 S 42953 XMA Decoder (01
159 S 42989 SDLAudioP2
160 S 42954 Audio Worker (0
274 S 45878 XThread1FFFF6C0
288 S 42990 XThread953FC6C0
513 S 45877 XThread2DFFD6C0
537 S 45876 XThread3DFF96C0
547 S 42956 WSI swapchain q
853 S 42997 XThread75FFD6C0
981 S 42994 XThread77FFF6C0
994 S 42999 XThread66FFE6C0
996 R 42998 XThread67FFF6C0
997 S 42993 XThread85FFD6C0
1027 S 42995 XThread87FFF6C0
1314 S 42951 GPU Commands (0
1913 S 42968 Main XThread (F
2022 S 42921 Logging Writer
2156 S 42925 Emulator
3031 S 42987 XThread96BFE6C0
3070 S 42982 XThreadA2FFE6C0
3101 S 42983 XThreadA0FFB6C0
3447 S 42986 XThread97BFF6C0
3459 S 42939 Emulator
3462 S 42943 Emulator
3463 S 42942 Emulator
3467 S 42944 Emulator
3468 S 42938 Emulator
3468 S 42948 Emulator
3471 S 42940 Emulator
3472 S 42946 Emulator
3476 S 42941 Emulator
3477 S 42945 Emulator
3484 S 42947 Emulator
3486 S 42949 Emulator
6387 S 42936 llvmpipe-10
6626 S 42937 llvmpipe-11
6746 S 42935 llvmpipe-9
7176 S 42934 llvmpipe-8
7477 S 42933 llvmpipe-7
7631 S 42932 llvmpipe-6
7844 S 42926 llvmpipe-0
7871 S 42931 llvmpipe-5
7899 S 42928 llvmpipe-2
7907 S 42930 llvmpipe-4
7929 S 42929 llvmpipe-3
8128 S 42927 llvmpipe-1
28354 S 42919 xenia_canary
28701 S 42985 XThread9C9F96C0