trap in shm_delete_mapping

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hi,
I just got this panic on a -current XEN3_DOMU amd64 kernel:
uvm_fault(0xffffffff805cf8c0, 0xffffa0002446e000, 2) -> e
fatal page fault in supervisor mode
trap type 6 code 2 rip ffffffff8031bcfd cs e030 rflags 10246 cr2  
ffffa0002446edf8 cpl 0 rsp ffffa00024f1ab90
kernel: page fault trap, code=0
Stopped in pid 9436.1 (conftest) at     netbsd:shm_delete_mapping+0x5d: movl    
%eax,0x38(%rcx)
shm_delete_mapping() at netbsd:shm_delete_mapping+0x5d
sys_shmat() at netbsd:sys_shmat+0x2cb
syscall() at netbsd:syscall+0xb4

ds          0xedc0
es          0x10
fs          0x3
gs          0x8687
rdi         0x2ff8
rsi         0xffffa000274f23c8
rbp         0xffffa00024f1aba0
rbx         0xffffa000274f23c8
rdx         0xffffa000274f23c8
rcx         0xffffa0002446edc0
rax         0x494f7baa
r8          0xffffa00027045db8
r9          0
r10         0x9e37fffffffc0001
r11         0xffffa000249d0c20
r12         0xffffa000249d0c20
r13         0xffffa00024d9d8b8
r14         0xffffa000274f23c8
r15         0xffffa00024f1ac80
rip         0xffffffff8031bcfd  shm_delete_mapping+0x5d
cs          0xe030
rflags      0x10246
rsp         0xffffa00024f1ab90
ss          0xe02b

Does it ring a bell to someone ?

-- 
Manuel Bouyer, LIP6, Universite Paris VI.           
Manuel.Bouyer%lip6.fr@localhost
     NetBSD: 26 ans d'experience feront toujours la difference
--