View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0010351 | ardour | bugs | public | 2026-05-20 14:39 | 2026-05-20 14:39 |
| Reporter | magiclen0810 | Assigned To | |||
| Priority | high | Severity | crash | Reproducibility | always |
| Status | new | Resolution | open | ||
| Platform | Ubuntu | OS | Linux | OS Version | (any) |
| Product Version | 9.5 | ||||
| Summary | 0010351: Segfault when importing a MIDI file with "Use MIDI Tempo Map" enabled | ||||
| Description | Importing the attached .mid file with the "Use MIDI Tempo Map" option checked crashes Ardour with SIGSEGV. Unchecking that option lets the import complete normally, so it's specifically the tempo-map path. Same crash on 9.2 and 9.5 (official linux x86_64 binaries from ardour.org), so it doesn't look like a 9.5 regression. The file is a SMF type 1 with 6 tempo events (ranging from 0000069:0000052 to 84 BPM) and 4 time-signature events. The first time signature in the file is 1/4 at tick 0, followed by 4/4 — that's the most unusual thing about the file and might be what's tripping the importer up, but I haven't bisected. | ||||
| Steps To Reproduce | 1. Start Ardour 9.5 with any session (new or existing). 2. Session > Import Audio/MIDI files... and pick the attached Second_Run_-_Vanilla_mood.mid. 3. In the import dialog, tick "Use MIDI Tempo Map". 4. Click Import. Ardour segfaults. Drag-and-drop import with the same option set crashes the same way. Without "Use MIDI Tempo Map", import works fine. | ||||
| Additional Information | OS: Linux (x86_64) Ardour: 9.5.0 (official binary, /opt/Ardour-9.5.0). Also reproduces on 9.2. CPU: Intel(R) Core(TM) Ultra 9 285K The full stderr is attached as ardour-stderr.txt. The tempo map gets fully constructed and dumped ("final map" + the point list print out), then the segfault happens immediately after — so it looks like the crash is downstream of the map construction itself, possibly when the map is being applied or the import session is being committed. Last lines before the crash: 0x64cd07a0db70 P@36892019548/179:1916/46|1|1916 BarTime Tempo Meter ------------ [1] 39642 segmentation fault (core dumped) /opt/Ardour-9.5.0/bin/ardour9 No backtrace — I haven't rebuilt with debug symbols, sorry. | ||||
| Tags | crash, Import, Midi, tempo-map | ||||
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2026-05-20 14:39 | magiclen0810 | New Issue | |
| 2026-05-20 14:39 | magiclen0810 | Tag Attached: crash | |
| 2026-05-20 14:39 | magiclen0810 | Tag Attached: Import | |
| 2026-05-20 14:39 | magiclen0810 | Tag Attached: Midi | |
| 2026-05-20 14:39 | magiclen0810 | Tag Attached: tempo-map | |
| 2026-05-20 14:39 | magiclen0810 | File Added: Second Run - Vanilla mood.mid |
