** Changed in: linux-raspi (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1881159
Title:
BUG: soft lockup on return from recover to run mode on rpi3a+
Status in snapd:
Invalid
Status in linux-raspi package in Ubuntu:
Fix Released
Bug description:
Image: core20 beta 20200527.5 (arm64)
Device RPI3A+
=== Steps to reproduce ===
1. sudo snap install http
2. switch to recovery mode using:
sudo http --pretty=format POST snapd:///v2/systems/$(ls
/run/mnt/ubuntu-seed/systems/) action=do mode=recover
3. Once in recover mode, sudo snap install http
4. switch back to run mode:
sudo http --pretty=format POST snapd:///v2/systems/$(ls
/run/mnt/ubuntu-seed/systems/) action=do mode=run
When I did this, the system never seems to fully return to run mode. I get
errors about a soft lockup (see below) on the serial console after it reboots.
However, if I pull the power at that point, and plug it back in, it does get
back into run mode
## Info: input data size = 2 = 0x2
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot.scr
4638 bytes read in 3 ms (1.5 MiB/s)
## Executing script at 02400000
4096 bytes read in 5 ms (799.8 KiB/s)
4096 bytes read in 3 ms (1.3 MiB/s)
8378005 bytes read in 369 ms (21.7 MiB/s)
Total of 1 halfword(s) were the same
Decompressing kernel...
Uncompressed size: 25905664 = 0x18B4A00
18758066 bytes read in 819 ms (21.8 MiB/s)
Booting Ubuntu (with booti) from mmc 0:...
## Flattened Device Tree blob at 02600000
Booting using the fdt blob at 0x2600000
Using Device Tree in place at 0000000002600000, end 000000000260a065
Starting kernel ...
[ 2.359758] spi-bcm2835 3f204000.spi: could not get clk: -517
[ 220.013319] watchdog: BUG: soft lockup - CPU#3 stuck for 22s!
[systemd-udevd:533]
[ 248.013307] watchdog: BUG: soft lockup - CPU#3 stuck for 22s!
[systemd-udevd:533]
[ 276.013308] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[systemd-udevd:533]
[ 304.013307] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[systemd-udevd:533]
[ 332.013307] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[systemd-udevd:533]
[ 360.013307] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[systemd-udevd:533]
[ 388.013314] watchdog: BUG: soft lockup - CPU#3 stuck for 22s!
[systemd-udevd:533]
[ 416.013308] watchdog: BUG: soft lockup - CPU#3 stuck for 22s!
[systemd-udevd:533]
[ 444.013309] watchdog: BUG: soft lockup - CPU#3 stuck for 22s!
[systemd-udevd:533]
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