Re: trap in shm_delete_mapping

[Andrew Doran <ad%netbsd.org@localhost>]

On Mon, Dec 22, 2008 at 12:59:21PM +0100, Manuel Bouyer wrote:
> 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 ?

Nope, maybe:

db> whatis 0xffffa0002446edc0

Andrew