page fault in kern/kern_sig.c:1582

With GENERIC HEAD from Jan 25 17:49 UTC I got
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0xcf11ac7c
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc0616855
stack pointer           = 0x10:0xcf224ca0
frame pointer           = 0x10:0xcf224cb0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = resume, IOPL = 0
current process         = 62405 (syscall)
[thread pid 62405 tid 100175 ]
Stopped at      sigtd+0x85:     andl    0(%ebx,%edx,4),%eax
db> where
Tracing pid 62405 tid 100175 td 0xc1b61730
sigtd(c1ac99d8,9,81) at sigtd+0x85
psignal(c1ac99d8,9) at psignal+0x63
kill(c1b61730,cf224d14,2,2,296) at kill+0x98
syscall(2f,2f,2f,2804f6c0,bfbfeb0c) at syscall+0x213

I can recreate the panic with a small test program.

More info at http://www.holm.cc/stress/log/cons111.html
-- 
Peter Holm