[Pkg-zfsonlinux-devel] Bug#1104724: zfs-dkms: Kernel panic and kernel blocks with zfs 2.3.2-1 and linux 6.12.25-1

[Stefan Bellon]

Package: zfs-dkms
Version: 2.3.2-1
Severity: critical
Justification: breaks the whole system

Dear Maintainer,

I am using Debian unstable and on May 1st, I rebooted into kernel 6.12.25:

2025-05-01T08:52:47.280039+02:00 nimbus kernel: Linux version 6.12.25-amd64
(debian-kernel at lists.debian.org) (x86_64-linux-gnu-gcc-14 (Debian 14.2.0-19)
14.2.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP PREEMPT_DYNAMIC Debian
6.12.25-1 (2025-04-25)

At that time I still had ZFS 2.3.1-1 installed:

2025-05-01T08:52:47.280708+02:00 nimbus zed[1584]: ZFS Event Daemon 2.3.1-1
(PID 1584)
[...]
2025-05-01T08:52:47.281218+02:00 nimbus kernel: ZFS: Loaded module v2.3.1-1,
ZFS pool version 5000, ZFS filesystem version 5

And the system was running just fine.

On May 2nd, the update to ZFS 2.3.2-1 was installed:

Aptitude 0.8.13: log report
Fri, May  2 2025 22:36:58 +0200
[...]
[UPGRADE] libnvpair3linux:amd64 2.3.1-1 -> 2.3.2-1
[UPGRADE] libuutil3linux:amd64 2.3.1-1 -> 2.3.2-1
[UPGRADE] libzfs6linux:amd64 2.3.1-1 -> 2.3.2-1
[UPGRADE] libzpool6linux:amd64 2.3.1-1 -> 2.3.2-1
[UPGRADE] zfs-dkms:amd64 2.3.1-1 -> 2.3.2-1
[UPGRADE] zfs-initramfs:amd64 2.3.1-1 -> 2.3.2-1
[UPGRADE] zfs-zed:amd64 2.3.1-1 -> 2.3.2-1
[UPGRADE] zfsutils-linux:amd64 2.3.1-1 -> 2.3.2-1

I did not immediately reboot. Today I rebooted and my system now exhibits
kernel panics like the following:

2025-05-05T10:42:49.790841+02:00 nimbus kernel: PANIC: zroot: blkptr at
ffffb9932045c080 has no valid DVAs
2025-05-05T10:42:49.790850+02:00 nimbus kernel: Showing stack for process 1931
2025-05-05T10:42:49.790851+02:00 nimbus kernel: CPU: 14 UID: 0 PID: 1931 Comm:
z_wr_iss Tainted: P           OE      6.12.25-amd64 #1  Debian 6.12.25-1
2025-05-05T10:42:49.790852+02:00 nimbus kernel: Tainted:
[P]=PROPRIETARY_MODULE, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
2025-05-05T10:42:49.790852+02:00 nimbus kernel: Hardware name: ASUS System
Product Name/ROG STRIX B760-I GAMING WIFI, BIOS 1205 06/14/2023
2025-05-05T10:42:49.790853+02:00 nimbus kernel: Call Trace:
2025-05-05T10:42:49.790853+02:00 nimbus kernel:  <TASK>
2025-05-05T10:42:49.790853+02:00 nimbus kernel:  dump_stack_lvl+0x5d/0x80
2025-05-05T10:42:49.790854+02:00 nimbus kernel:  vcmn_err.cold+0x54/0x7f [spl]
2025-05-05T10:42:49.790854+02:00 nimbus kernel:  zfs_panic_recover+0x79/0xa0
[zfs]
2025-05-05T10:42:49.790855+02:00 nimbus kernel:
zfs_blkptr_verify_log+0xba/0x190 [zfs]
2025-05-05T10:42:49.790855+02:00 nimbus kernel:  zfs_blkptr_verify+0x15a/0x5e0
[zfs]
2025-05-05T10:42:49.790855+02:00 nimbus kernel:  ?
bp_get_dsize_sync+0x124/0x160 [zfs]
2025-05-05T10:42:49.790856+02:00 nimbus kernel:  dbuf_write_ready+0xf5/0x410
[zfs]
2025-05-05T10:42:49.790856+02:00 nimbus kernel:  arc_write_ready+0xe9/0x560
[zfs]
2025-05-05T10:42:49.790856+02:00 nimbus kernel:  ? mutex_lock+0x12/0x30
2025-05-05T10:42:49.790857+02:00 nimbus kernel:  zio_ready+0x4b/0x400 [zfs]
2025-05-05T10:42:49.790857+02:00 nimbus kernel:  zio_execute+0x8f/0x130 [zfs]
2025-05-05T10:42:49.790857+02:00 nimbus kernel:  taskq_thread+0x352/0x6f0 [spl]
2025-05-05T10:42:49.790858+02:00 nimbus kernel:  ?
__pfx_default_wake_function+0x10/0x10
2025-05-05T10:42:49.790858+02:00 nimbus kernel:  ? __pfx_zio_execute+0x10/0x10
[zfs]
2025-05-05T10:42:49.790859+02:00 nimbus kernel:  ? __pfx_taskq_thread+0x10/0x10
[spl]
2025-05-05T10:42:49.790859+02:00 nimbus kernel:  kthread+0xcf/0x100
2025-05-05T10:42:49.790870+02:00 nimbus kernel:  ? __pfx_kthread+0x10/0x10
2025-05-05T10:42:49.790870+02:00 nimbus kernel:  ret_from_fork+0x31/0x50
2025-05-05T10:42:49.790871+02:00 nimbus kernel:  ? __pfx_kthread+0x10/0x10
2025-05-05T10:42:49.790871+02:00 nimbus kernel:  ret_from_fork_asm+0x1a/0x30
2025-05-05T10:42:49.790871+02:00 nimbus kernel:  </TASK>

or blocks like

2025-05-05T10:18:26.838905+02:00 nimbus kernel: INFO: task txg_sync:811 blocked
for more than 120 seconds.
2025-05-05T10:18:26.838942+02:00 nimbus kernel:       Tainted: P           OE
6.12.25-amd64 #1 Debian 6.12.25-1
2025-05-05T10:18:26.838944+02:00 nimbus kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
2025-05-05T10:18:26.838946+02:00 nimbus kernel: task:txg_sync        state:D
stack:0     pid:811   tgid:811   ppid:2      flags:0x00004000
2025-05-05T10:18:26.842221+02:00 nimbus kernel: Call Trace:
2025-05-05T10:18:26.842243+02:00 nimbus kernel:  <TASK>
2025-05-05T10:18:26.847107+02:00 nimbus kernel:  __schedule+0x505/0xbf0
2025-05-05T10:18:26.847126+02:00 nimbus kernel:  schedule+0x27/0xf0
2025-05-05T10:18:26.847128+02:00 nimbus kernel:  schedule_timeout+0x9e/0x160
2025-05-05T10:18:26.850319+02:00 nimbus kernel:  ?
__pfx_process_timeout+0x10/0x10
2025-05-05T10:18:26.850338+02:00 nimbus kernel:  io_schedule_timeout+0x51/0x70
2025-05-05T10:18:26.855185+02:00 nimbus kernel:
__cv_timedwait_common+0x138/0x170 [spl]
2025-05-05T10:18:26.855203+02:00 nimbus kernel:  ?
__pfx_autoremove_wake_function+0x10/0x10
2025-05-05T10:18:26.855205+02:00 nimbus kernel:  __cv_timedwait_io+0x19/0x20
[spl]
2025-05-05T10:18:26.857951+02:00 nimbus kernel:  zio_wait+0x14e/0x2f0 [zfs]
2025-05-05T10:18:26.862423+02:00 nimbus kernel:  dsl_pool_sync+0xf2/0x510 [zfs]
2025-05-05T10:18:26.862445+02:00 nimbus kernel:  spa_sync+0x577/0x1070 [zfs]
2025-05-05T10:18:26.866748+02:00 nimbus kernel:  ?
spa_txg_history_init_io+0x115/0x120 [zfs]
2025-05-05T10:18:26.866766+02:00 nimbus kernel:  txg_sync_thread+0x20a/0x3b0
[zfs]
2025-05-05T10:18:26.870416+02:00 nimbus kernel:  ?
__pfx_txg_sync_thread+0x10/0x10 [zfs]
2025-05-05T10:18:26.870434+02:00 nimbus kernel:  ?
__pfx_thread_generic_wrapper+0x10/0x10 [spl]
2025-05-05T10:18:26.870436+02:00 nimbus kernel:
thread_generic_wrapper+0x5a/0x70 [spl]
2025-05-05T10:18:26.874860+02:00 nimbus kernel:  kthread+0xcf/0x100
2025-05-05T10:18:26.874878+02:00 nimbus kernel:  ? __pfx_kthread+0x10/0x10
2025-05-05T10:18:26.874880+02:00 nimbus kernel:  ret_from_fork+0x31/0x50
2025-05-05T10:18:26.877755+02:00 nimbus kernel:  ? __pfx_kthread+0x10/0x10
2025-05-05T10:18:26.877773+02:00 nimbus kernel:  ret_from_fork_asm+0x1a/0x30
2025-05-05T10:18:26.882013+02:00 nimbus kernel:  </TASK>

or

2025-05-05T10:18:26.882032+02:00 nimbus kernel: INFO: task z_wr_iss:970 blocked
for more than 120 seconds.
2025-05-05T10:18:26.882034+02:00 nimbus kernel:       Tainted: P           OE
6.12.25-amd64 #1 Debian 6.12.25-1
2025-05-05T10:18:26.886399+02:00 nimbus kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
2025-05-05T10:18:26.886417+02:00 nimbus kernel: task:z_wr_iss        state:D
stack:0     pid:970   tgid:970   ppid:2      flags:0x00004000
2025-05-05T10:18:26.886420+02:00 nimbus kernel: Call Trace:
2025-05-05T10:18:26.890318+02:00 nimbus kernel:  <TASK>
2025-05-05T10:18:26.890336+02:00 nimbus kernel:  __schedule+0x505/0xbf0
2025-05-05T10:18:26.890338+02:00 nimbus kernel:  schedule+0x27/0xf0
2025-05-05T10:18:26.890340+02:00 nimbus kernel:  vcmn_err.cold+0x69/0x7f [spl]
2025-05-05T10:18:26.890341+02:00 nimbus kernel:  zfs_panic_recover+0x79/0xa0
[zfs]
2025-05-05T10:18:26.898558+02:00 nimbus kernel:
zfs_blkptr_verify_log+0xba/0x190 [zfs]
2025-05-05T10:18:26.898577+02:00 nimbus kernel:  zfs_blkptr_verify+0x15a/0x5e0
[zfs]
2025-05-05T10:18:26.902624+02:00 nimbus kernel:  ?
bp_get_dsize_sync+0x124/0x160 [zfs]
2025-05-05T10:18:26.902643+02:00 nimbus kernel:  dbuf_write_ready+0xf5/0x410
[zfs]
2025-05-05T10:18:26.906165+02:00 nimbus kernel:  arc_write_ready+0xe9/0x560
[zfs]
2025-05-05T10:18:26.906183+02:00 nimbus kernel:  ? mutex_lock+0x12/0x30
2025-05-05T10:18:26.910169+02:00 nimbus kernel:  zio_ready+0x4b/0x400 [zfs]
2025-05-05T10:18:26.910187+02:00 nimbus kernel:  zio_execute+0x8f/0x130 [zfs]
2025-05-05T10:18:26.910189+02:00 nimbus kernel:  taskq_thread+0x352/0x6f0 [spl]
2025-05-05T10:18:26.913818+02:00 nimbus kernel:  ?
__pfx_default_wake_function+0x10/0x10
2025-05-05T10:18:26.913836+02:00 nimbus kernel:  ? __pfx_zio_execute+0x10/0x10
[zfs]
2025-05-05T10:18:26.918401+02:00 nimbus kernel:  ? __pfx_taskq_thread+0x10/0x10
[spl]
2025-05-05T10:18:26.918419+02:00 nimbus kernel:  kthread+0xcf/0x100
2025-05-05T10:18:26.918421+02:00 nimbus kernel:  ? __pfx_kthread+0x10/0x10
2025-05-05T10:18:26.922779+02:00 nimbus kernel:  ret_from_fork+0x31/0x50
2025-05-05T10:18:26.922797+02:00 nimbus kernel:  ? __pfx_kthread+0x10/0x10
2025-05-05T10:18:26.922800+02:00 nimbus kernel:  ret_from_fork_asm+0x1a/0x30
2025-05-05T10:18:26.926833+02:00 nimbus kernel:  </TASK>

or

2025-05-05T10:18:26.926852+02:00 nimbus kernel: INFO: task exe:2620 blocked for
more than 120 seconds.
2025-05-05T10:18:26.926854+02:00 nimbus kernel:       Tainted: P           OE
6.12.25-amd64 #1 Debian 6.12.25-1
2025-05-05T10:18:26.930859+02:00 nimbus kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
2025-05-05T10:18:26.930877+02:00 nimbus kernel: task:exe             state:D
stack:0     pid:2620  tgid:2609  ppid:2489   flags:0x00000002
2025-05-05T10:18:26.930879+02:00 nimbus kernel: Call Trace:
2025-05-05T10:18:26.934801+02:00 nimbus kernel:  <TASK>
2025-05-05T10:18:26.934826+02:00 nimbus kernel:  __schedule+0x505/0xbf0
2025-05-05T10:18:26.937894+02:00 nimbus kernel:  ?
arc_buf_alloc_impl.isra.0+0x28e/0x300 [zfs]
2025-05-05T10:18:26.937912+02:00 nimbus kernel:  schedule+0x27/0xf0
2025-05-05T10:18:26.937915+02:00 nimbus kernel:
schedule_preempt_disabled+0x15/0x30
2025-05-05T10:18:26.942182+02:00 nimbus kernel:
__mutex_lock.constprop.0+0x3d0/0x6d0
2025-05-05T10:18:26.942200+02:00 nimbus kernel:  dbuf_dirty+0x4d/0x9b0 [zfs]
2025-05-05T10:18:26.945670+02:00 nimbus kernel:  dbuf_dirty+0x78b/0x9b0 [zfs]
2025-05-05T10:18:26.945689+02:00 nimbus kernel:  dnode_setdirty+0x96/0xf0 [zfs]
2025-05-05T10:18:26.949656+02:00 nimbus kernel:  dbuf_dirty+0x8b1/0x9b0 [zfs]
2025-05-05T10:18:26.949674+02:00 nimbus kernel:  sa_attr_op+0x27a/0x3d0 [zfs]
2025-05-05T10:18:26.949676+02:00 nimbus kernel:  sa_bulk_update_impl+0x62/0x100
[zfs]
2025-05-05T10:18:26.954273+02:00 nimbus kernel:  sa_bulk_update+0x50/0x90 [zfs]
2025-05-05T10:18:26.954290+02:00 nimbus kernel:  zfs_dirty_inode+0x2ab/0x3a0
[zfs]
2025-05-05T10:18:26.958278+02:00 nimbus kernel:  zpl_dirty_inode+0x2b/0x40
[zfs]
2025-05-05T10:18:26.958296+02:00 nimbus kernel:  __mark_inode_dirty+0x54/0x350
2025-05-05T10:18:26.958298+02:00 nimbus kernel:  generic_update_time+0x4e/0x60
2025-05-05T10:18:26.958300+02:00 nimbus kernel:  touch_atime+0xed/0x120
2025-05-05T10:18:26.962268+02:00 nimbus kernel:  zpl_iter_read+0x17b/0x190
[zfs]
2025-05-05T10:18:26.962286+02:00 nimbus kernel:  vfs_read+0x299/0x370
2025-05-05T10:18:26.962289+02:00 nimbus kernel:  __x64_sys_pread64+0x98/0xd0
2025-05-05T10:18:26.965801+02:00 nimbus kernel:  do_syscall_64+0x82/0x190
2025-05-05T10:18:26.965819+02:00 nimbus kernel:  ? eventfd_write+0xe2/0x210
2025-05-05T10:18:26.965821+02:00 nimbus kernel:  ? aa_file_perm+0x122/0x4d0
2025-05-05T10:18:26.970287+02:00 nimbus kernel:  ?
cgroup_rstat_updated+0x69/0x220
2025-05-05T10:18:26.970304+02:00 nimbus kernel:  ?
kmem_cache_alloc_noprof+0x106/0x2f0
2025-05-05T10:18:26.970306+02:00 nimbus kernel:  ? posix_lock_inode+0x516/0xa40
2025-05-05T10:18:26.970307+02:00 nimbus kernel:  ? fcntl_setlk+0x272/0x400
2025-05-05T10:18:26.974292+02:00 nimbus kernel:  ?
__lruvec_stat_mod_folio+0x83/0xd0
2025-05-05T10:18:26.974308+02:00 nimbus kernel:  ? do_fcntl+0x5e9/0x740
2025-05-05T10:18:26.974310+02:00 nimbus kernel:  ? __x64_sys_fcntl+0x87/0xe0
2025-05-05T10:18:26.974311+02:00 nimbus kernel:  ?
syscall_exit_to_user_mode+0x4d/0x210
2025-05-05T10:18:26.974312+02:00 nimbus kernel:  ? do_syscall_64+0x8e/0x190
2025-05-05T10:18:26.974313+02:00 nimbus kernel:  ?
__count_memcg_events+0x53/0xf0
2025-05-05T10:18:26.974314+02:00 nimbus kernel:  ?
count_memcg_events.constprop.0+0x1a/0x30
2025-05-05T10:18:26.974315+02:00 nimbus kernel:  ? handle_mm_fault+0x1bb/0x2c0
2025-05-05T10:18:26.974316+02:00 nimbus kernel:  ?
do_user_addr_fault+0x36c/0x620
2025-05-05T10:18:26.974316+02:00 nimbus kernel:  ? exc_page_fault+0x7e/0x180
2025-05-05T10:18:26.974317+02:00 nimbus kernel:
entry_SYSCALL_64_after_hwframe+0x76/0x7e
2025-05-05T10:18:26.981642+02:00 nimbus kernel: RIP: 0033:0x414cae
2025-05-05T10:18:26.981655+02:00 nimbus kernel: RSP: 002b:000000c000051750
EFLAGS: 00000212 ORIG_RAX: 0000000000000011
2025-05-05T10:18:26.981657+02:00 nimbus kernel: RAX: ffffffffffffffda RBX:
0000000000000003 RCX: 0000000000414cae
2025-05-05T10:18:26.981658+02:00 nimbus kernel: RDX: 0000000000000040 RSI:
000000c00031e680 RDI: 0000000000000003
2025-05-05T10:18:26.981659+02:00 nimbus kernel: RBP: 000000c000051790 R08:
0000000000000000 R09: 0000000000000000
2025-05-05T10:18:26.981660+02:00 nimbus kernel: R10: 0000000000000000 R11:
0000000000000212 R12: 000000c00031e680
2025-05-05T10:18:26.981660+02:00 nimbus kernel: R13: 0000000000000080 R14:
000000c000002380 R15: 0000000000000000
2025-05-05T10:18:26.981661+02:00 nimbus kernel:  </TASK>

or

2025-05-05T10:18:26.981662+02:00 nimbus kernel: INFO: task fish:2909 blocked
for more than 120 seconds.
2025-05-05T10:18:26.990200+02:00 nimbus kernel:       Tainted: P           OE
6.12.25-amd64 #1 Debian 6.12.25-1
2025-05-05T10:18:26.990218+02:00 nimbus kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
2025-05-05T10:18:26.990220+02:00 nimbus kernel: task:fish            state:D
stack:0     pid:2909  tgid:2909  ppid:1      flags:0x00000006
2025-05-05T10:18:26.990222+02:00 nimbus kernel: Call Trace:
2025-05-05T10:18:26.990223+02:00 nimbus kernel:  <TASK>
2025-05-05T10:18:26.993774+02:00 nimbus kernel:  __schedule+0x505/0xbf0
2025-05-05T10:18:26.993792+02:00 nimbus kernel:  schedule+0x27/0xf0
2025-05-05T10:18:26.993794+02:00 nimbus kernel:
schedule_preempt_disabled+0x15/0x30
2025-05-05T10:18:26.993796+02:00 nimbus kernel:
__mutex_lock.constprop.0+0x3d0/0x6d0
2025-05-05T10:18:26.998303+02:00 nimbus kernel:  dbuf_find+0xe1/0x250 [zfs]
2025-05-05T10:18:26.998321+02:00 nimbus kernel:  dbuf_hold_impl+0x6f/0x7e0
[zfs]
2025-05-05T10:18:26.998324+02:00 nimbus kernel:  ? dbuf_find+0x1b6/0x250 [zfs]
2025-05-05T10:18:26.998325+02:00 nimbus kernel:  dbuf_hold_impl+0x4d4/0x7e0
[zfs]
2025-05-05T10:18:27.001873+02:00 nimbus kernel:  dbuf_hold+0x31/0x60 [zfs]
2025-05-05T10:18:27.001892+02:00 nimbus kernel:  dnode_hold_impl+0x100/0x1310
[zfs]
2025-05-05T10:18:27.001894+02:00 nimbus kernel:  ?
zfs_znode_hold_enter+0x118/0x170 [zfs]
2025-05-05T10:18:27.001896+02:00 nimbus kernel:  dmu_bonus_hold+0x3c/0x90 [zfs]
2025-05-05T10:18:27.005814+02:00 nimbus kernel:  zfs_zget+0x70/0x290 [zfs]
2025-05-05T10:18:27.005832+02:00 nimbus kernel:  zfs_dirent_lock+0x42b/0x6c0
[zfs]
2025-05-05T10:18:27.005834+02:00 nimbus kernel:  zfs_dirlook+0xb4/0x320 [zfs]
2025-05-05T10:18:27.005836+02:00 nimbus kernel:  ? zfs_zaccess+0x26f/0x450
[zfs]
2025-05-05T10:18:27.009808+02:00 nimbus kernel:  zfs_lookup+0x264/0x410 [zfs]
2025-05-05T10:18:27.009826+02:00 nimbus kernel:  zpl_lookup+0xd9/0x2d0 [zfs]
2025-05-05T10:18:27.009829+02:00 nimbus kernel:  lookup_one_qstr_excl+0x6f/0xa0
2025-05-05T10:18:27.009830+02:00 nimbus kernel:  filename_create+0xc6/0x1a0
2025-05-05T10:18:27.009831+02:00 nimbus kernel:  do_mkdirat+0x61/0x180
2025-05-05T10:18:27.013921+02:00 nimbus kernel:  __x64_sys_mkdir+0x46/0x70
2025-05-05T10:18:27.013939+02:00 nimbus kernel:  do_syscall_64+0x82/0x190
2025-05-05T10:18:27.013941+02:00 nimbus kernel:  ?
syscall_exit_to_user_mode+0x4d/0x210
2025-05-05T10:18:27.013943+02:00 nimbus kernel:  ? do_syscall_64+0x8e/0x190
2025-05-05T10:18:27.013945+02:00 nimbus kernel:  ? exc_page_fault+0x7e/0x180
2025-05-05T10:18:27.013946+02:00 nimbus kernel:
entry_SYSCALL_64_after_hwframe+0x76/0x7e
2025-05-05T10:18:27.018264+02:00 nimbus kernel: RIP: 0033:0x7f36923ac687
2025-05-05T10:18:27.018283+02:00 nimbus kernel: RSP: 002b:00007ffff6008618
EFLAGS: 00000246 ORIG_RAX: 0000000000000053
2025-05-05T10:18:27.018285+02:00 nimbus kernel: RAX: ffffffffffffffda RBX:
00007ffff6008620 RCX: 00007f36923ac687
2025-05-05T10:18:27.018287+02:00 nimbus kernel: RDX: 0000000000000019 RSI:
00000000000001c0 RDI: 00007ffff6008620
2025-05-05T10:18:27.018288+02:00 nimbus kernel: RBP: 00007ffff60088e0 R08:
fffefffefffcfcff R09: 632e2f6e6f6c6c65
2025-05-05T10:18:27.018289+02:00 nimbus kernel: R10: 8080808080808080 R11:
0000000000000246 R12: 000055a4a068ef70
2025-05-05T10:18:27.021717+02:00 nimbus kernel: R13: 00007ffff6008910 R14:
000055a4a67cd110 R15: 0000000000000019
2025-05-05T10:18:27.021735+02:00 nimbus kernel:  </TASK>

This happens when accessing files in the ZFS. In my case, reproducibly,
~/.config in my main user is affected which leads to all kinds of system
misbehavior, as all applications reading configuration from there just block
(i.e. you can not even open a fish shell) and also the root pool cannot even be
unmounted at shutdown any more.

Luckily I can still boot into linux 6.12.17-1 with zfs 2.3.1-1 which works.


-- System Information:
Debian Release: trixie/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.17-amd64 (SMP w/32 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages zfs-dkms depends on:
ii  debconf [debconf-2.0]  1.5.91
ii  dkms                   3.1.8-1
ii  file                   1:5.46-5
ii  libc6-dev [libc-dev]   2.41-7
ii  libpython3-stdlib      3.13.3-1
ii  lsb-release            12.1-1

Versions of packages zfs-dkms recommends:
ii  linux-libc-dev  6.12.25-1
ii  zfs-zed         2.3.2-1
ii  zfsutils-linux  2.3.2-1

Versions of packages zfs-dkms suggests:
ii  debhelper  13.24.2

-- debconf information:
  zfs-dkms/stop-build-for-unknown-kernel: true
* zfs-dkms/note-incompatible-licenses:
  zfs-dkms/stop-build-for-32bit-kernel: true