Messages in this thread | | | Subject | Re: Early boot panic on machine with lots of memory | From | Sasha Levin <> | Date | Thu, 14 Jun 2012 11:50:40 +0200 |
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On Thu, 2012-06-14 at 12:20 +0900, Tejun Heo wrote: > On Wed, Jun 13, 2012 at 11:38:55PM +0200, Sasha Levin wrote: > > Hi all, > > > > I'm seeing the following when booting a KVM guest with 65gb of RAM, on latest linux-next. > > > > Note that it happens with numa=off. > > > > [ 0.000000] BUG: unable to handle kernel paging request at ffff88102febd948 > > [ 0.000000] IP: [<ffffffff836a6f37>] __next_free_mem_range+0x9b/0x155 > > Can you map it back to the source line please?
mm/memblock.c:583
phys_addr_t r_start = ri ? r[-1].base + r[-1].size : 0; 97: 85 d2 test %edx,%edx 99: 74 08 je a3 <__next_free_mem_range+0xa3> 9b: 49 8b 48 f0 mov -0x10(%r8),%rcx 9f: 49 03 48 e8 add -0x18(%r8),%rcx
It's the deref on 9b (r8=ffff88102febd958).
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