AUTOVISORContact us

Autonomous monitoring for your device fleet

Agents that investigate telemetry, logs, and crashes from your fleet to identify anomalies, root cause issues, and file tickets.

Automatically. Continuously. 24/7.

Devices

7 of 13,386 · all cohorts · rev-B

cohort: allfw: 3.2.1hw: rev-Bstatus: any

Device	Cohort	FW · HW	Status	Last seen
AVT-1284	production	3.2.1 · rev-B	active	12s
AVT-0142	production	3.2.1 · rev-B	active	2m
AVT-0231	production	3.2.1 · rev-B	error	5m
AVT-0419	production	3.2.1 · rev-B	investigating	now
AVT-0084	beta	3.2.1 · rev-B	active	1m
AVT-0673	beta	3.2.1 · rev-B	warning	3m
AVT-0921	production	3.2.1 · rev-A	active	7m

AVT-0419investigating

Device ID: AVT-0419
Nickname: Buggy-419
OS: Zephyr 3.5.0
Firmware: 3.2.1
Hardware: rev-B nRF52840
Cohort: production
Region: JP · Tokyo
First seen: 142 days ago
Last seen: now
Uptime: 71 min
Free heap: 4.2 KB
Battery: 31%

Active Issue

HardFaultble_rx_thread.c:142

last log: [BLE] gap_evt_disconnected

AVT-0419 Investigation

14:23:31

analyzing logs from last 2 hours…

14:23:28

✓correlating with fleet telemetry: 23 similar events

14:23:25

git log --grep="ble disconnect" --since=2w

↳ 3 commits · last by @kenji 4d ago

14:23:22

grep "BLE_GAP_EVT_DISCONNECTED" /sdk

→ 8 hits

14:23:19

✓cross-referencing disconnect handler

14:23:17

✓reading nrf-sdk BLE_GAP docs

14:23:14

(gdb) info registers

↳ r0=0x0 pc=0x080142aa

14:23:11

git blame ble_rx_thread.c:142

↳ commit 4a2f8c · @jane · 2d ago

14:23:08

(gdb) bt full

↳ #0 ble_rx_callback at ble_rx_thread.c:142

14:23:05

grep "lpn_poll" /logs

→ 142 hits

14:23:03

✓symbolicated stack with build 3.2.1

14:23:01

✓coredump uploaded from device

AutoVisor AI · automatic investigation

root causeconfidence · high

Imprecise data bus fault in ble_rx_callback dereferencing the GAP event pointer after disconnect. The pointer was freed by BLE_GAP_EVT_DISCONNECTED one keep-alive earlier — race introduced in commit 4a2f8c by @jane.

Suggested patch · ble_rx_thread.c

- if (evt->type == GAP_RX) {
+ if (evt && evt->type == GAP_RX) {

// event memory is invalidated immediately after the handler returns

// callers MUST NOT cache evt pointers across handler boundaries

grep "BLE_GAP_EVT_DISCONNECTED" /sdk/include/ble_gap.h

Reading the nrf-sdk BLE_GAP docs to confirm the disconnect race I'm seeing.

4a2f8c · @jane · 2d ago · 'fast path: skip evt type recheck'

git blame -L 138,148 ble_rx_thread.c

Frame 0 has evt=0x0 — null deref. Checking who last touched ble_rx_thread.c:142.

#0 ble_rx_callback (evt=0x0) at ble_rx_thread.c:142

#1 rx_dispatch () at ble_stack.c:88

#2 lpn_poll_handler () at lpn.c:217

#3 k_work_handler () at kernel/work.c:412

(gdb) bt full

New crash on a production device. Symbolicating with build 3.2.1 and pulling the backtrace.

Automatic RCA

Every crash investigated by an AI agent

AutoVisor reads your repo, documentation, scans recent commits, and posts a root-cause hypothesis for engineers to get up to speed. Registers, stacked frames, and symbol files all become AI context.

AutoVisor AI · triage assistance

>Battery life on rev-B dropped 20%, what's happening?

Pulling daily battery drain across the rev-B cohort for the last 30 days.

fleet.query("rev-B", metric="battery_drain_per_day", window="30d")

mar 09 – apr 01: 2.1 %/day (baseline, n=8,412)

apr 02 – apr 08: 2.6 %/day (+24 %) ← regression

Drop starts apr 02 — same day fw 3.2.1 went out. Splitting by firmware to confirm.

fleet.compare("rev-B", group_by="fw", metric="battery_drain_per_day")

rev-B · fw 3.2.0 → 2.1 %/day (n=2,210, control)

rev-B · fw 3.2.1 → 2.6 %/day (+24 %, n=6,202)

Confirmed on the cohort. Diffing v3.2.0..v3.2.1 — 8c3a1f cut the BLE scan interval 1280→320 ms. Let me verify the impact on a device that actually went through the upgrade.

device.metrics("AVT-2417", ["ble_wakeups_per_min","battery_pct"], window="48h")

AVT-2417 · upgraded apr 03 06:14 UTC

before: wakeups 14/min · drain 2.0 %/day

after: wakeups 58/min · drain 2.6 %/day

Confirmed at the device level — wakeups jumped 14→58/min the moment 3.2.1 landed and the battery curve steepened immediately. Filing as FW-4318 with a rollback to the old interval behind a config flag.

Triage Assistance

Triage issues across your fleet in seconds

An agent with complete context over your fleet — metrics, logs, crash reports, etc. – helps you run investigations a dashboard can't: compare cohorts, control for hardware mix, and surface issues leveraging your entire fleet's data.

REGRESSION2 minutes ago

BLE mesh watchdog regression on fw 3.2.1 · rev-B nRF52840

Triggered by alert

>alert me when a new firmware release shows >3× the baseline watchdog reset rate, segmented by hardware revision

Over the last 6 hours, 0.4% of devices on fw 3.2.1 have watchdog-reset at ~71 minutes uptime. All affected devices are rev-B nRF52840. The shared signal is a lpn_poll timeout in their last 10 log lines.

Devices affected

1,243

Signature

lpn_poll · WDT

First seen

after 3.2.1 rollout

Fleet Insights

Surface anomalies in real time

Setup custom alerts and AutoVisor will continuously keep watch. Get hyper specific with natural language queries, tying in data from across your deployed devices.

New crash signature

AVT-9412

ble_rx_thread.c:142

HardFault · 1,243 devices

CODEOWNERS resolution

ble_rx_thread.c → @jane

git blame line 142 → @jane

last modified by @jane

→ filing ticket

Linear

AVR-1842

[HardFault] BLE RX null deref after GAP disconnect (fw 3.2.1, rev-B)

AutoVisor detected 1,243 devices crashing in ble_rx_callback (ble_rx_thread.c:142). Root cause hypothesis: stale GAP event pointer dereferenced after BLE_GAP_EVT_DISCONNECTED. Race introduced in commit 4a2f8c.

BugFirmwareP1BLEfw 3.2.1

J

Assigned to @jane

seamless integration

Auto-triage straight to your bug tracker

Every new crash signature opens a ticket in your tracker (Jira, Linear, GitHub Issues have day one support), assigned to the author of the faulting commit via CODEOWNERS. RCA draft is automatically attached.

Built by engineers from

Apple

Amazon

Pricing

Enterprise Ready.

AutoVisor is in private beta. Pricing scales with fleet size and AI usage. Reach out for a quote.

Enterprise

Custom

For embedded teams shipping at scale, with on-prem and zero-retention options.

✓Unlimited devices, fleets, and cohorts
✓Full AI suite
✓BYO LLM keys / on-prem deployment
✓SAML SSO, granular RBAC, audit log
✓Compliance pack: SOC 2, 21 CFR Part 11
✓Direct Slack with the founders

Get AutoVisor today.