Jorijn van der Graaf
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iio-sensor-proxy 3.9's own rules tag fastrpc-adsp with ssc-light and ssc-compass, and pmOS's 90- rule adds ssc-accel and ssc-proximity. On this image nothing serves the SSC registry (no hexagonrpcd), so the libssc compass discover() probes it for 100 s in a nested main loop, from find_sensors() in the daemon's name-acquired handler, before the per-type delayed-invocation arrays exist. A ClaimProximity dispatched in that window (Plasma sends one at every daemon start) hits g_ptr_array_add(NULL) and driver_set_polling(NULL): the client is registered, polling never starts, every later claim is treated as "already active", and ProximityNear stays false with HasProximity true. A second claim in the window dereferences the NULL array in the claim handler and the daemon crashes, which is the boot-time crash the restart drop-in was papering over. Clear the tags on the fastrpc devices after both rules. The daemon then skips the probe, starts in under a second and polls on claim. Verified on the dev phone 2026-09-24 with the near-level DTB (near level 25, combined-stable's DTS carry): no assertions or crash at boot, and monitor-sensor logged one "Proximity value changed: 1"/"0" pair per hand pass. The near level itself comes from that kernel; without it the daemon declines the sensor before any of this matters.
12 lines
909 B
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12 lines
909 B
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# FP6: the sensors are IIO devices on APPS-owned buses, and nothing serves the
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# Qualcomm sensor core (SSC) registry on this image (no hexagonrpcd). iio-sensor-
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# proxy 3.9 still tags fastrpc-adsp for its libssc drivers: ssc-light/ssc-compass
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# from its own 80- rule, ssc-accel/ssc-proximity from pmOS's 90- rule. The libssc
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# compass discover() then probes the registry for ~100 s in a nested main loop,
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# inside find_sensors(), before the daemon's per-type claim bookkeeping exists:
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# a ClaimProximity dispatched in that window hits g_ptr_array_add(NULL) +
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# driver_set_polling(NULL), the client stays registered and proximity polling
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# never starts for anyone (HasProximity true, ProximityNear stuck false). A
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# second claim in the window crashes the daemon in its claim handler. Drop the
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# tags. This file must sort after 80- and 90-.
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SUBSYSTEM=="misc", KERNEL=="fastrpc-*", ENV{IIO_SENSOR_PROXY_TYPE}=""
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