malloc_consolidate(): unaligned fastbin chunk detected on AMD graphics

[ryangrunest]

ubuntu-frame is freezing at seemingly random points.

 % sudo snap logs ubuntu-frame
2024-03-06T22:56:04Z ubuntu-frame.daemon[394759]: [2024-03-06 22:56:04.004627] <information> evdev-input: Added /dev/input/event8: Touch KB9000
2024-03-06T22:56:04Z ubuntu-frame.daemon[394759]: [2024-03-06 22:56:04.011304] <information> evdev-input: Added /dev/input/event10: Touch KB9000
2024-03-06T22:56:04Z ubuntu-frame.daemon[394759]: [2024-03-06 22:56:04.017292] <information> evdev-input: Added /dev/input/event9: Touch KB9000
2024-03-06T22:56:04Z ubuntu-frame.daemon[394759]: [2024-03-06 22:56:04.021692] <information> evdev-input: Added /dev/input/event4: RPI Wired Keyboard 4
2024-03-06T22:56:04Z ubuntu-frame.daemon[394759]: [2024-03-06 22:56:04.026211] <information> evdev-input: Added /dev/input/event5: RPI Wired Keyboard 4
2024-03-06T22:56:04Z ubuntu-frame.daemon[394759]: [2024-03-06 22:56:04.030774] <information> evdev-input: Added /dev/input/event6
2024-03-06T22:56:04Z ubuntu-frame.daemon[394759]: [2024-03-06 22:56:04.035781] <information> evdev-input: Added /dev/input/event11
2024-03-06T22:56:04Z ubuntu-frame.daemon[394759]: [2024-03-06 22:56:04.041764] <information> evdev-input: Added /dev/input/event12
2024-03-07T23:01:52Z ubuntu-frame.daemon[394759]: malloc_consolidate(): unaligned fastbin chunk detected
2024-03-07T23:01:52Z ubuntu-frame.daemon[394759]: !!! Fatal signal received. Attempting cleanup, but deadlock may occur 

 % free -m 
               total        used        free      shared  buff/cache   available
Mem:           63692        2715       55441         134        5534       60130
Swap:           8191           0        8191 

CPU usage was also below 15%.

What can I do to further diagnose and resolve this issue?

[Saviq]

Hi @ryangrunest, thanks for this report, can you please confirm which version of Frame you're running?

$ snap info ubuntu-frame | grep -e installed -e tracking

Also, can you provide more details about your setup? Looks like you're running on a Raspberry Pi?

[ryangrunest]

Here's the output. Regarding setup, hardware is an Asus PN52.

$ snap info ubuntu-frame | grep -e installed -e tracking 

tracking:     22/stable
installed:          130-mir2.16.3                   (8587) 6MB -

[Saviq]

Hi again. It's the first time we've seen this, and that's very little information to go on… Neither Mir or Frame themselves call malloc_consolidate, so it would have to be in a dependency or a driver, maybe…

If you have any means to run Frame under gdb, maybe that could point at a culprit… https://ubuntu.com/server/docs/service-debuginfod can provide more symbols.

How often does it happen for you?

[ryangrunest]

I'm hoping to get a chance to gather gdb data tomorrow. I will update the thread as soon as I have it. Thank you

[robinelvin]

I am experiencing the same issue. This is on a PC with dual monitor display. Seems to be hanging every 24 hours or so

2024-06-18T06:22:34Z ubuntu-frame.daemon[1079]: malloc_consolidate(): unaligned fastbin chunk detected
2024-06-18T06:22:34Z ubuntu-frame.daemon[1079]: !!! Fatal signal received. Attempting cleanup, but deadlock may occur

snap info ubuntu-frame | grep -e installed -e tracking
tracking:     22/stable
installed:          144-mir2.17.0                    (9750) 6MB -

[Saviq]

Can you all please let us know what graphics hardware you're on?

Also migrating to the 24 track in case that got fixed in e.g. the GPU drivers?

snap refresh ubuntu-frame --channel 24/stable

Thanks!

[robinelvin]

@Saviq Hardware is AMD Ryzen Embedded R1102G with Radeon Vega Gfx

Switching to 24/stable and will report back - thanks

[robinelvin]

@Saviq Seems to be stable on the 24 track - thank you

[Saviq]

Since both reports of this were on AMD graphics, and using the newer Mesa release helps - I'm going to close this pending any subsequent reports.