Recent current panic

Hi!

I'm experiencing a fully reproducible panic on recent current. I'm not 
sure what is triggering it, looks ZFS related but I could be wrong. It 
started when I updated shortly after the latest ZFS import.

I'm running 2de20c5c77cf8d5b2059054cff0e0c1fc124739d committed on  Fri 
Jul 3 10:55:37 2026 -0800 (from the commit message timestamp).

first just after booting I get this report on the console:

EFI RT fault page fault

EFI runtime trap 12: page fault while in kernel mode
cpuid = 5; apic id = 05
fault virtual address	= 0x0
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xb8bc1c5f
stack pointer	        = 0x28:0xfffffe0121ae6c20
frame pointer	        = 0x28:0x1
processor eflags	= interrupt enabled, resume, IOPL = 0
current thread		= 0/100045 (kernel/thread taskq)
rdi: fffffe0121ae6ce0 rsi: fffff80002523cd0 rdx: 0000000000000000
rcx: 00000000b8bc31b8  r8: 00000000b8bc3448  r9: 0000000000000006
rax: 00000000b9254e70 rbx: fffffe0121ae6d98 rbp: 0000000000000001
r10: 0000000000000000 r11: 0000000000000006 r12: fffff800014df658
r13: 0000000000000000 r14: fffffe0121ae6e08 r15: fffffe0121ae6da8


The system works fine after this, except if I start building a nanobsd 
image with scripts that have worked fine till now. Then when it tries to 
install packages in the image jail system panics hard:

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0x180
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff807a74e5
stack pointer	        = 0x28:0xfffffe016f8ef9e0
frame pointer	        = 0x28:0xfffffe016f8efd70
processor eflags	= interrupt enabled, resume, IOPL = 0
current thread		= 15751/101480 (sh/sh)
rdi: fffffe016369e984 rsi: fffff80035ad3000 rdx: 0000000000000000
rcx: 0000000000000000  r8: 0000000000006873  r9: 00000000ffffff01
rax: 0000000000000000 rbx: fffffe016369e984 rbp: fffffe016f8efd70
r10: 0000000000000001 r11: 0000000000000001 r12: fffffe016369e5a0
r13: 0000000000000000 r14: 0000000000000000 r15: 0000000000000000
panic: page fault
cpuid = 1
time = 1783444123
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x36/frame 
0xfffffe016f8ef720
vpanic() at vpanic+0x149/frame 0xfffffe016f8ef850
panic() at panic+0x43/frame 0xfffffe016f8ef8b0
trap_pfault() at trap_pfault+0x3a8/frame 0xfffffe016f8ef910
calltrap() at calltrap+0x8/frame 0xfffffe016f8ef910
--- trap 0xc, rip = 0xffffffff807a74e5, rsp = 0xfffffe016f8ef9e0, rbp = 
0xfffffe016f8efd70 ---
kern_execve() at kern_execve+0x17f5/frame 0xfffffe016f8efd70
sys_execve() at sys_execve+0xc2/frame 0xfffffe016f8efe00
amd64_syscall() at amd64_syscall+0x133/frame 0xfffffe016f8eff30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe016f8eff30
--- syscall (59, FreeBSD ELF64, execve), rip = 0x605cefca, rsp = 
0x881310ee8, rbp = 0x881311360 ---
KDB: enter: panic


Anyone can help I can trigger this easily. If someone could give me some 
steps to perform in the debugger to extract more information I can do that.


Thanks in advance.

-- 
Guido Falsi <mad@madpilot.net>