Kernel panic related to pipe

[Ryo ONODERA <ryo%tetera.org@localhost>]

Hi,

The kernel build from the latest src gets kernel panic as follows:

uvm_fault(0xffff808a5adb4680, 0x0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip 0xffffffff80dd1c62 cs 0x8 rflags 0x10286 cr2 0x70 ilevel
0 rsp 0xffff84892121be50
curlwp 0xffff808a38fbe000 pid 9260.9260 lowest kstack 0xffff8489212172c0
panic: trap
cpu8: Begin traceback...
vpanic() at netbsd:vpanic+0x17e
panic() at netbsd:panic+0x4a
trap() at netbsd:trap+0xbc4
--- trap (number 6) ---
selnotify() at netbsd:selnotify+0x17
pipe_read() at netbsd:pipe_read+0x293
dofileread() at netbsd:dofileread+0xad
sys_read() at netbsd:sys_read+0x49
syscall() at netbsd:syscall+0xac
--- syscall (number 3) ---
netbsd:syscall+0xac:
cpu8: End traceback...

I run `cd /usr/pkgsrc && cvs up -dP` in GNU screen from pkgsrc/misc/screen
and get this panic.

I have no idea what commit has problem.
The kernel from src as of 2026-10-01 works without problem for me.

Could anyone take a look at my problem?

Thank you.

-- 
Ryo ONODERA // ryo%tetera.org@localhost
PGP fingerprint = 82A2 DC91 76E0 A10A 8ABB  FD1B F404 27FA C7D1 15F3