Error after 6.19 upgrade on a Debian Bookworm system

Incus
1

Hello,

Just upgraded to 6.19 and got an error for an OpenVPN container:

```bash
L’unité (unit) incus.service a commencé à démarrer.
nov. 29 13:56:42 buzz incusd[507004]: time=“2025-11-29T13:56:42+01:00” level=error msg=“Failed writing error for HTTP response” err=“write unix /var/lib/incus/unix.socket->@: write: broken pipe” url=/1.0 writeErr=“write unix /var/lib/incus/unix.socket->@: write: broken pipe”
nov. 29 13:56:42 buzz incusd[507004]: time=“2025-11-29T13:56:42+01:00” level=error msg=“Failed writing error for HTTP response” err=“write unix /var/lib/incus/unix.socket->@: write: broken pipe” url=/1.0 writeErr=“write unix /var/lib/incus/unix.socket->@: write: broken pipe”
nov. 29 13:56:43 buzz incusd[507004]: panic: runtime error: invalid memory address or nil pointer dereference
nov. 29 13:56:43 buzz incusd[507004]: [signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0x14483e7]
nov. 29 13:56:43 buzz incusd[507004]: goroutine 437 [running]:
nov. 29 13:56:43 buzz incusd[507004]: github.com/lxc/incus/v6/shared/archive.Unpack({0xc000636180, 0x5d}, {0xc000178500, 0x73}, 0x0, 0xc3199330, 0x0)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/shared/archive/archive.go:191 +0xe7
nov. 29 13:56:43 buzz incusd[507004]: github.com/lxc/incus/v6/internal/server/storage.ImageUnpack({0xc00004b740, 0x56}, {{0xc0016c0140, 0x40}, {0xc001484200, 0x7}, 0xc000d0e6f0, {0x23065a7, 0x6}, {0x231a29f, …}, …}, …)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/internal/server/storage/utils.go:610 +0x565
nov. 29 13:56:43 buzz incusd[507004]: github.com/lxc/incus/v6/internal/server/storage.(*backend).EnsureImage.(*backend).imageFiller.func6({{0xc0016c0140, 0x40}, {0xc001484200, 0x7}, 0xc000d0e6f0, {0x23065a7, 0x6}, {0x231a29f, 0xa}, 0xc000d0e5d0, …}, …)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/internal/server/storage/backend.go:1724 +0x205
nov. 29 13:56:43 buzz incusd[507004]: github.com/lxc/incus/v6/internal/server/storage/drivers.genericRunFiller({0x27be0a8, 0xc000bf22d0}, {{0xc0016c0140, 0x40}, {0xc001484200, 0x7}, 0xc000d0e6f0, {0x23065a7, 0x6}, {0x231a29f, …}, …}, …)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/internal/server/storage/drivers/generic_vfs.go:1213 +0x2d8
nov. 29 13:56:43 buzz incusd[507004]: github.com/lxc/incus/v6/internal/server/storage/drivers.(*btrfs).CreateVolume(0xc000bf22d0, {{0xc0016c0140, 0x40}, {0xc001484200, 0x7}, 0xc000d0e6f0, {0x23065a7, 0x6}, {0x231a29f, 0xa}, …}, …)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/internal/server/storage/drivers/driver_btrfs_volumes.go:93 +0x54d
nov. 29 13:56:43 buzz incusd[507004]: github.com/lxc/incus/v6/internal/server/storage.(*backend).EnsureImage(0xc000740540, {0xc0016c0140, 0x40}, 0x0)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/internal/server/storage/backend.go:3621 +0x19ef
nov. 29 13:56:43 buzz incusd[507004]: main.imageCreateInPool(0x2062240?, 0xc00059f680, {0xc001236410?, 0xc000506050?})
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/cmd/incusd/images.go:985 +0x55
nov. 29 13:56:43 buzz incusd[507004]: main.ImageDownload({0x278dc10, 0xc000934960}, 0x0, 0xc000c86200, 0x0, 0xc0005db7e0)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/cmd/incusd/daemon_images.go:299 +0x175a
nov. 29 13:56:43 buzz incusd[507004]: main.autoUpdateImage({0x278dc10, 0xc000934960}, 0xc000c86200, 0x0, 0x8b8, 0xc00120e240, {0xc00055cf28, 0x7}, 0x0?)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/cmd/incusd/images.go:2337 +0x98d
nov. 29 13:56:43 buzz incusd[507004]: main.autoUpdateImages({0x278dc10, 0xc000934960}, 0xc000c86200)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/cmd/incusd/images.go:1979 +0x8b4
nov. 29 13:56:43 buzz incusd[507004]: main.autoUpdateImagesTask.func1.1(0x0?)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/cmd/incusd/images.go:1845 +0x1f
nov. 29 13:56:43 buzz incusd[507004]: github.com/lxc/incus/v6/internal/server/operations.(*Operation).Start.func1(0xc000abd680)
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/internal/server/operations/operations.go:306 +0x26
nov. 29 13:56:43 buzz incusd[507004]: created by github.com/lxc/incus/v6/internal/server/operations.(*Operation).Start in goroutine 535
nov. 29 13:56:43 buzz incusd[507004]: /build/incus/internal/server/operations/operations.go:305 +0x106
nov. 29 13:56:43 buzz systemd[1]: incus.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
░░ Subject: Unit process exited
```

I would like to know how to investigate further.

2

I’ll take a look shortly. I think I know what’s going on there.

3

The second commit should take care of the crash you’ve ran into.
I’ll push an updated package as soon as the fix has been reviewed and merged.

4

Thanks a lot :slight_smile:

5

The fix was merged and updated packages are building now.

6

Great !
Just installed the new packages and the openvpn container went back after manual start.

Thanks again for your prompt reply.