Opt-in Linux 6.17 Kernel for Proxmox VE 9 available on test & no-subscription

I just did the 8 to 9 upgrade on 6 servers and 1 of them refused to boot with the 6.17 kernel. All 6 servers have the root fs on zfs using a mirror. However with this 1 bad server, when it tries to mount rpool, it dies and just hangs. The 6.8 and 6.14 kernels boot on the same server without any issues.

I was able to boot into the initramfs shell and manually mount rpool read-only, but manually mounting it read-write output the following to dmesg:

Code:
[  396.156210] spl: loading out-of-tree module taints kernel.
[  396.177606] zfs: module license 'CDDL' taints kernel.
[  396.177609] Disabling lock debugging due to kernel taint
[  396.177620] zfs: module license taints kernel.
[  396.557045] ZFS: Loaded module v2.3.4-pve1, ZFS pool version 5000, ZFS filesystem version 5
[  397.299048] Oops: general protection fault, probably for non-canonical address 0x6972775f73746e65: 0000 [#1] SMP NOPTI
[  397.299188] CPU: 14 UID: 0 PID: 761 Comm: txg_sync Tainted: P S         O        6.17.4-2-pve #1 PREEMPT(voluntary)
[  397.299258] Tainted: [P]=PROPRIETARY_MODULE, [S]=CPU_OUT_OF_SPEC, [O]=OOT_MODULE
[  397.299327] Hardware name: Gigabyte Technology Co., Ltd. Z790 S WIFI DDR4/Z790 S WIFI DDR4, BIOS F1 02/06/2024
[  397.299400] RIP: 0010:dmu_objset_userquota_get_ids+0x1a0/0x500 [zfs]
[  397.299645] Code: 45 b8 00 00 00 00 48 c7 45 c0 00 00 00 00 48 c7 45 c8 00 00 00 00 49 8b 44 24 18 48 8b 80 c0 02 00 00 48 8b 04 c5 00 f2 e4 c0 <ff> d0 0f 1f 00 41 89 c4 48 8b 45 b0 49 89 87 20 03 00 00 48 8b 45
[  397.299810] RSP: 0018:ffffd17bcc253b60 EFLAGS: 00010246
[  397.299897] RAX: 6972775f73746e65 RBX: 0000000000000001 RCX: 0000000000000000
[  397.299986] RDX: ffffd17bcc253b78 RSI: ffff8bba70ef9ec0 RDI: 0000000000000010
[  397.300077] RBP: ffffd17bcc253bc8 R08: 0000000000000000 R09: 0000000000000000
[  397.300169] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8bba708f9800
[  397.300263] R13: 0000000000000000 R14: ffff8bba43078c00 R15: ffff8bba7101fab8
[  397.300359] FS:  0000000000000000(0000) GS:ffff8bd1f1c86000(0000) knlGS:0000000000000000
[  397.300458] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  397.300562] CR2: 0000752ff5797ff8 CR3: 000000099b83a004 CR4: 0000000000f70ef0
[  397.300666] PKRU: 55555554
[  397.300770] Call Trace:
[  397.300876]  <TASK>
[  397.300981]  dnode_setdirty+0x34/0x110 [zfs]
[  397.301235]  dbuf_dirty+0x824/0x950 [zfs]
[  397.301474]  ? zio_create+0x406/0x690 [zfs]
[  397.301727]  dmu_buf_will_dirty_impl+0xa0/0x270 [zfs]
[  397.301975]  dmu_buf_will_dirty+0x16/0x30 [zfs]
[  397.302218]  dsl_dataset_sync+0x26/0x200 [zfs]
[  397.302484]  dsl_pool_sync+0xa9/0x4e0 [zfs]
[  397.302755]  spa_sync+0x561/0x1070 [zfs]
[  397.303029]  ? spa_txg_history_init_io+0x11c/0x130 [zfs]
[  397.303296]  txg_sync_thread+0x209/0x3b0 [zfs]
[  397.303559]  ? try_to_wake_up+0x392/0x8a0
[  397.303696]  ? __pfx_txg_sync_thread+0x10/0x10 [zfs]
[  397.303961]  ? __pfx_thread_generic_wrapper+0x10/0x10 [spl]
[  397.304106]  thread_generic_wrapper+0x5d/0x80 [spl]
[  397.304250]  kthread+0x108/0x220
[  397.304392]  ? __pfx_kthread+0x10/0x10
[  397.304533]  ret_from_fork+0x205/0x240
[  397.304676]  ? __pfx_kthread+0x10/0x10
[  397.304820]  ret_from_fork_asm+0x1a/0x30
[  397.304967]  </TASK>
[  397.305110] Modules linked in: zfs(PO) spl(O) uas usb_storage usbkbd raid1 dm_raid hid_generic raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx usbhid xor hid raid6_pq nvme xhci_pci spi_intel_pci atlantic nvme_core ahci i2c_i801 spi_intel xhci_hcd i2c_mux intel_lpss_pci libahci i2c_smbus macsec nvme_keyring intel_lpss nvme_auth idma64 video wmi pinctrl_alderlake
[  397.305770] ---[ end trace 0000000000000000 ]---
[  397.305945] RIP: 0010:dmu_objset_userquota_get_ids+0x1a0/0x500 [zfs]
[  397.306256] Code: 45 b8 00 00 00 00 48 c7 45 c0 00 00 00 00 48 c7 45 c8 00 00 00 00 49 8b 44 24 18 48 8b 80 c0 02 00 00 48 8b 04 c5 00 f2 e4 c0 <ff> d0 0f 1f 00 41 89 c4 48 8b 45 b0 49 89 87 20 03 00 00 48 8b 45
[  397.306619] RSP: 0018:ffffd17bcc253b60 EFLAGS: 00010246
[  397.306796] RAX: 6972775f73746e65 RBX: 0000000000000001 RCX: 0000000000000000
[  397.306972] RDX: ffffd17bcc253b78 RSI: ffff8bba70ef9ec0 RDI: 0000000000000010
[  397.307145] RBP: ffffd17bcc253bc8 R08: 0000000000000000 R09: 0000000000000000
[  397.307313] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8bba708f9800
[  397.307477] R13: 0000000000000000 R14: ffff8bba43078c00 R15: ffff8bba7101fab8
[  397.307641] FS:  0000000000000000(0000) GS:ffff8bd1f1c86000(0000) knlGS:0000000000000000
[  397.307799] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  397.307956] CR2: 0000752ff5797ff8 CR3: 000000099b83a004 CR4: 0000000000f70ef0
[  397.308112] PKRU: 55555554