On Sat, 2015-10-10 at 18:11 +0100, Richard Kettlewell wrote: > Package: src:linux > Version: 3.16.7-ckt11-1+deb8u4 > Severity: important > > Dear Maintainer, > > * What led up to the situation? > > My kernel has started crashing every few days, since 2015-09-09. > > The system was upgraded to this kernel (linux-image-3.16.0-4-586 > 3.16.7-ckt11-1+deb8u4) on 2015-09-20, so it's not a regression in that > particular version. > > I retrieved kernel output from the most recent crash, which replaces > the kernel log section below. [...]
This looks rather like a hardware failure, as the instruction pointer
is pointing to the middle of an instruction. Here's the disassembly of
smp_apic_timer_interrupt:
c1425ba0: 55 push %ebp
c1425ba1: 89 e5 mov %esp,%ebp
c1425ba3: 53 push %ebx
c1425ba4: e8 c7 fb ff ff call 0xc1425770 ;
initial
3e 8d 74 26 00 lea %ds:0x0(%esi,%eiz,1),%esi ;
patched
c1425ba9: 8b 0d 00 ee 59 c1 mov 0xc159ee00,%ecx
c1425baf: 31 d2 xor %edx,%edx
c1425bb1: 8b 1d 48 39 59 c1 mov 0xc1593948,%ebx
c1425bb7: a3 48 39 59 c1 mov %eax,0xc1593948
c1425bbc: b8 b0 00 00 00 mov $0xb0,%eax
c1425bc1: ff 91 a4 00 00 00 call *0xa4(%ecx)
^ EIP
c1425bc7: e8 d4 a4 c1 ff call 0xc10400a0
c1425bcc: e8 df f6 bf ff call 0xc10252b0
c1425bd1: e8 2a a5 c1 ff call 0xc1040100
c1425bd6: 89 1d 48 39 59 c1 mov %ebx,0xc1593948
c1425bdc: 5b pop %ebx
c1425bdd: 5d pop %ebp
c1425bde: 66 90 xchg %ax,%ax
c1425be0: c3 ret
Ben.
--
Ben Hutchings
Unix is many things to many people,
but it's never been everything to anybody.
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