[Bug 276341] zfs panic: VERIFY3(rc->rc_count == number) failed

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 16 Jan 2024 00:06:53 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276341

John Kennedy <warlock@phouka.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |warlock@phouka.net

--- Comment #2 from John Kennedy <warlock@phouka.net> ---
Similar situation here.

...
exec shutdown -r now
Shutdown NOW!
shutdown: [pid 3676]
Jan 15 15:54:10 bsd15 shutdown[3676]: reboot by root: 
...
All buffers synced.
Uptime: 7h35m52s
GEOM_ELI: Device vtbd0p4.eli destroyed.
GEOM_ELI: Detached vtbd0p4.eli on last close.
panic: VERIFY3(rc->rc_count == number) failed (59392 == 0)

cpuid = 0
time = 1705362861
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00c737eaf0
vpanic() at vpanic+0x131/frame 0xfffffe00c737ec20
spl_panic() at spl_panic+0x3a/frame 0xfffffe00c737ec80
zfs_refcount_destroy_many() at zfs_refcount_destroy_many+0xd1/frame
0xfffffe00c737ecb0
arc_fini() at arc_fini+0x299/frame 0xfffffe00c737ece0
dmu_fini() at dmu_fini+0x9/frame 0xfffffe00c737ecf0
spa_fini() at spa_fini+0x36/frame 0xfffffe00c737ed30
zfs_kmod_fini() at zfs_kmod_fini+0x7a/frame 0xfffffe00c737ed60
zfs_shutdown() at zfs_shutdown+0x2b/frame 0xfffffe00c737ed70
kern_reboot() at kern_reboot+0x4f3/frame 0xfffffe00c737edb0
sys_reboot() at sys_reboot+0x3a9/frame 0xfffffe00c737ee00
amd64_syscall() at amd64_syscall+0x153/frame 0xfffffe00c737ef30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00c737ef30
--- syscall (55, FreeBSD ELF64, reboot), rip = 0x28cdaa, rsp = 0x8204547a8, rbp
= 0x820454890 ---
KDB: enter: panic
[ thread pid 1 tid 100002 ]
Stopped at      kdb_enter+0x33: movq    $0,0xe3a592(%rip)

It crashed on a 15.0-53df7e58cca system, but pretty sure it happened on an
earlier ARM system back on 1/13.

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