Re: 4.11rc3 unwinder spew.

2017-03-21 Thread Josh Poimboeuf 
On Mon, Mar 20, 2017 at 06:13:25PM -0400, Dave Jones wrote:
> I just got this while running a backup..
> 
>   Dave
> 
> WARNING: kernel stack frame pointer at c9fe7ff0 in rsync:1157 has bad 
> value   (null)
> unwind stack type:0 next_sp:  (null) mask:2 graph_idx:0
> c9fe7f98: c9fe7ff0 (0xc9fe7ff0)
> c9fe7fa0: b7000f56 (trace_hardirqs_off_thunk+0x1a/0x1c)
> c9fe7fa8: 0246 (0x246)
> c9fe7fb0:  ...
> c9fe7fc0: 7ffe3af639bc (0x7ffe3af639bc)
> c9fe7fc8: 0006 (0x6)
> c9fe7fd0: 7f80af433fc5 (0x7f80af433fc5)
> c9fe7fd8: 7ffe3af638e0 (0x7ffe3af638e0)
> c9fe7fe0: 7ffe3af638e0 (0x7ffe3af638e0)
> c9fe7fe8: 7ffe3af63970 (0x7ffe3af63970)
> c9fe7ff0:  ...
> c9fe7ff8: b7b74b9a (entry_SYSCALL_64_after_swapgs+0x17/0x4f)

Thanks, this is a known issue with the unwinder getting confused about
interrupts hitting in early entry code.  I'm working on a patch to fix
it.

-- 
Josh

Re: 4.11rc3 unwinder spew.

2017-03-21 Thread Josh Poimboeuf 
On Mon, Mar 20, 2017 at 06:13:25PM -0400, Dave Jones wrote:
> I just got this while running a backup..
> 
>   Dave
> 
> WARNING: kernel stack frame pointer at c9fe7ff0 in rsync:1157 has bad 
> value   (null)
> unwind stack type:0 next_sp:  (null) mask:2 graph_idx:0
> c9fe7f98: c9fe7ff0 (0xc9fe7ff0)
> c9fe7fa0: b7000f56 (trace_hardirqs_off_thunk+0x1a/0x1c)
> c9fe7fa8: 0246 (0x246)
> c9fe7fb0:  ...
> c9fe7fc0: 7ffe3af639bc (0x7ffe3af639bc)
> c9fe7fc8: 0006 (0x6)
> c9fe7fd0: 7f80af433fc5 (0x7f80af433fc5)
> c9fe7fd8: 7ffe3af638e0 (0x7ffe3af638e0)
> c9fe7fe0: 7ffe3af638e0 (0x7ffe3af638e0)
> c9fe7fe8: 7ffe3af63970 (0x7ffe3af63970)
> c9fe7ff0:  ...
> c9fe7ff8: b7b74b9a (entry_SYSCALL_64_after_swapgs+0x17/0x4f)

Thanks, this is a known issue with the unwinder getting confused about
interrupts hitting in early entry code.  I'm working on a patch to fix
it.

-- 
Josh

4.11rc3 unwinder spew.

2017-03-20 Thread Dave Jones 
I just got this while running a backup..

Dave

WARNING: kernel stack frame pointer at c9fe7ff0 in rsync:1157 has bad 
value   (null)
unwind stack type:0 next_sp:  (null) mask:2 graph_idx:0
c9fe7f98: c9fe7ff0 (0xc9fe7ff0)
c9fe7fa0: b7000f56 (trace_hardirqs_off_thunk+0x1a/0x1c)
c9fe7fa8: 0246 (0x246)
c9fe7fb0:  ...
c9fe7fc0: 7ffe3af639bc (0x7ffe3af639bc)
c9fe7fc8: 0006 (0x6)
c9fe7fd0: 7f80af433fc5 (0x7f80af433fc5)
c9fe7fd8: 7ffe3af638e0 (0x7ffe3af638e0)
c9fe7fe0: 7ffe3af638e0 (0x7ffe3af638e0)
c9fe7fe8: 7ffe3af63970 (0x7ffe3af63970)
c9fe7ff0:  ...
c9fe7ff8: b7b74b9a (entry_SYSCALL_64_after_swapgs+0x17/0x4f)

4.11rc3 unwinder spew.

2017-03-20 Thread Dave Jones 
I just got this while running a backup..

Dave

WARNING: kernel stack frame pointer at c9fe7ff0 in rsync:1157 has bad 
value   (null)
unwind stack type:0 next_sp:  (null) mask:2 graph_idx:0
c9fe7f98: c9fe7ff0 (0xc9fe7ff0)
c9fe7fa0: b7000f56 (trace_hardirqs_off_thunk+0x1a/0x1c)
c9fe7fa8: 0246 (0x246)
c9fe7fb0:  ...
c9fe7fc0: 7ffe3af639bc (0x7ffe3af639bc)
c9fe7fc8: 0006 (0x6)
c9fe7fd0: 7f80af433fc5 (0x7f80af433fc5)
c9fe7fd8: 7ffe3af638e0 (0x7ffe3af638e0)
c9fe7fe0: 7ffe3af638e0 (0x7ffe3af638e0)
c9fe7fe8: 7ffe3af63970 (0x7ffe3af63970)
c9fe7ff0:  ...
c9fe7ff8: b7b74b9a (entry_SYSCALL_64_after_swapgs+0x17/0x4f)